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VENTRICULAR FIBRILLATION ARREST IN AN ELDERLY FEMALE DUE TO AMIODARONE-INDUCED ACQUIRED LONG-QT SYNDROME 一名老年女性因胺碘酮诱发的获得性长 QT 综合征而心室颤动停止
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100787
Mingma Sherpa DO

Therapeutic Area

Pharmacologic Therapy

Case Presentation

We report the case of a 77-year-old female who presents after a LifeVest defibrillator shock. She had initially presented a month prior with new-onset heart failure and atrial fibrillation with rapid ventricular response. She was diagnosed with tachycardia-mediated cardiomyopathy. After three unsuccessful attempts at cardioversion, she was started on oral amiodarone 400mg twice a day. On discharge, she was prescribed oral amiodarone 200mg daily, along with entresto, metoprolol succinate, and empagliflozin.
She returned a month later after a shock at home. LifeVest interrogation demonstrated polymorphic ventricular tachycardia (VT)/ventricular fibrillation (VF) with prolonged QTc of 712 msec before VT/VF. Laboratory evaluation on admission within normal limits. Initial EKG showed sinus bradycardia with QTc 630 milliseconds (ms). The patient experienced recurrent TdP, requiring defibrillation three additional times while in the emergency department. Cardiac catheterization showed non-obstructive CAD. Amiodarone was held with improvement in her QTc to 398 ms. She was switched to mexiletine 150 mg TID, remained in sinus rhythm, and was discharged with a dual chamber pacemaker and defibrillator for secondary prevention.

Background

Due to age-related electrophysiological and structural changes, elderly individuals face an elevated risk of acquired long-QT syndrome (LQTS). Females are at a higher risk than males, with a 1-3% incidence of amiodarone-induced Torsades de Pointes (TdP). Older women taking amiodarone are especially susceptible to proarrhythmic effects, including QT interval prolongation, which can potentially lead to clinical complications.

Conclusions

Amiodarone is frequently utilized to treat atrial fibrillation refractory to cardioversion. However, current guidelines are based on studies conducted mainly on middle-aged men with minimal inclusion of women, especially older women, with a lack of sex-specific analysis and reporting. Women are prone to adverse drug reactions, and these reactions may be more severe due to doses that do not consider body weight differences. This can result in higher plasma levels and potential overdosage in women compared to men. Personalizing treatment by identifying sex differences in dosing, efficacy, and safety of cardiovascular drugs may help reduce the rate of adverse effects.
治疗领域药物疗法病例介绍我们报告了一例 77 岁女性在接受 LifeVest 除颤器电击后出现的病例。她最初在一个月前因新发心力衰竭和伴有快速心室反应的心房颤动而就诊。她被诊断为心动过速介导的心肌病。在三次尝试心脏复律失败后,她开始口服胺碘酮 400 毫克,每天两次。出院时,医生给她开了每天口服胺碘酮 200 毫克的处方,以及恩替卡韦、琥珀酸美托洛尔和恩格列净。LifeVest检查显示她患有多形性室性心动过速(VT)/室颤(VF),VT/VF前QTc延长至712毫秒。入院时的实验室评估结果在正常范围内。初始心电图显示窦性心动过缓,QTc为630毫秒。患者反复出现 TdP,在急诊科就诊时又需要除颤三次。心导管检查显示患者无阻塞性 CAD。患者服用胺碘酮后 QTc 下降到 398 毫秒。背景由于与年龄相关的电生理和结构变化,老年人患获得性长 QT 综合征(LQTS)的风险较高。女性的风险高于男性,胺碘酮诱发的 Torsades de Pointes(TdP)发生率为 1-3%。服用胺碘酮的老年妇女尤其容易受到促心律失常效应的影响,包括 QT 间期延长,这有可能导致临床并发症。然而,目前的指南主要基于对中年男性进行的研究,很少纳入女性,尤其是老年女性,而且缺乏针对不同性别的分析和报告。女性很容易出现药物不良反应,而且由于剂量没有考虑体重差异,这些反应可能会更加严重。与男性相比,这可能会导致女性血浆中的药物浓度更高,并可能导致药物过量。通过识别心血管药物在剂量、疗效和安全性方面的性别差异来进行个性化治疗,可能有助于降低不良反应的发生率。
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引用次数: 0
"HIGH AND INFLAMED" A CURIOUS CASE OF CANNABIS-INDUCED RECURRENT MYOPERICARDITIS "嗑药发炎"--大麻诱发复发性心肌炎的奇特病例
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100751
Sophia Navajas MD

Therapeutic Area

CVD Prevention – Primary and Secondary

Case Presentation

A 27-year-old male with a history of presumed viral myopericarditis in 2021 presented with chest pain. He was found to have elevated troponin but coronary angiography was normal. On an echocardiogram, he was found to have a moderately thickened pericardium without effusion and a preserved LV systolic function. He was treated with indomethacin, prednisone, and colchicine however his symptoms recurred in 2023. An electrocardiogram (EKG) showed ST-segment elevation in I and aVL, with mild elevation across septal leads V2-V4. Troponin is 1.86, CPK of 206, and CRP of 5.5. A repeat echocardiogram revealed LVEF 55% Without pericardial effusion and no wall motion abnormalities. The patient clinically improved and was discharged on indomethacin 50 mg q8h to decrease dose by 25 mg per week, colchicine 0.6 mg bid for six weeks, and prednisone 40 mg for weeks with gradual taper.

Background

The United Nations estimated that around 192 million individuals aged 15 to 64 were using cannabis as of 2016(1). Over time, there has been a global trend towards decriminalizing and legalizing recreational cannabis (1). While the immediate impact of cannabis on heart rate is known to occur within 10 to 30 minutes of consumption (2), its long-term effects on cardiovascular health remain less understood due to regulatory constraints (3).
Emerging research suggests a potential connection between prolonged cannabis use and increased risk of cardiovascular diseases, although the precise mechanisms are not fully elucidated (4,5). Conditions like pericarditis and myocarditis, both heart inflammations, share similar symptoms and are diagnosed based on clinical observations, lab tests, and imaging.

Conclusions

Marijuana use has been linked to severe cardiovascular complications, such as myopericarditis. Therefore, healthcare professionals should maintain a high index of suspicion and routinely inquire about marijuana consumption in patients presenting with chest pain. Moreover, there is an apparent demand for further research to ascertain the most efficacious treatment modalities for myopericarditis induced by marijuana usage.
治疗领域心血管疾病的一级和二级预防病例介绍一名 27 岁的男性患者于 2021 年因胸痛前来就诊,推测曾患病毒性心肌炎。他被发现肌钙蛋白升高,但冠状动脉造影检查结果正常。超声心动图检查发现,他的心包中度增厚,无积液,左心室收缩功能正常。他接受了吲哚美辛、强的松和秋水仙碱治疗,但症状于 2023 年复发。心电图显示 I 和 aVL 段 ST 段抬高,室间隔 V2-V4 导联轻度抬高。肌钙蛋白为 1.86,CPK 为 206,CRP 为 5.5。复查超声心动图显示 LVEF 为 55%,无心包积液,室壁运动无异常。患者的临床症状有所改善,出院后服用吲哚美辛 50 毫克,每 8 小时一次,每周减量 25 毫克;秋水仙碱 0.6 毫克,每次 6 周;泼尼松 40 毫克,连续数周,逐渐减量。背景据联合国估计,截至 2016 年,约有 1.92 亿 15 至 64 岁的人在使用大麻(1)。随着时间的推移,娱乐性大麻非刑罪化和合法化已成为全球趋势(1)。据了解,大麻对心率的直接影响发生在吸食大麻后的 10 至 30 分钟内(2),但由于监管限制,人们对大麻对心血管健康的长期影响仍不甚了解(3)。新近的研究表明,长期吸食大麻与心血管疾病风险增加之间存在潜在联系,但其确切机制尚未完全阐明(4,5)。心包炎和心肌炎这两种心脏炎症的症状相似,诊断依据是临床观察、实验室检测和影像学检查。因此,医护人员应保持高度怀疑,并定期询问胸痛患者是否吸食大麻。此外,显然有必要开展进一步研究,以确定治疗因吸食大麻而诱发的心肌炎的最有效方法。
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引用次数: 0
Phenotyping lipid profiles in type 2 diabetes: Risk association and outcomes from the Cardiovascular Health Study 2 型糖尿病患者的血脂谱表型:心血管健康研究的风险关联和结果
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100725
David Bleich , Mary L. Biggs , Julius M. Gardin , Mary Lyles , David S. Siscovick , Kenneth J. Mukamal

Aims

To determine whether discrete lipid profiles (refer to as lipid phenotyping) can be used to stratify cardiovascular risk in individuals with type 2 diabetes.

Methods and results

Cardiovascular Health Study participants with diabetes and fasting lipid profiles at baseline (n = 866) were categorized separately by level of LDL cholesterol and HDL-C/Triglyceride (Tg) profiles (low Tg/high HDL-C; high Tg/low HDL-C; high Tg only or low HDL-C only). We performed Cox multivariate regression analysis to assess the risk of CVD mortality, incident myocardial infarction (MI), heart failure (HF), stroke, and composite MACE (MI, HF, stroke, and CVD mortality) associated with each lipid category. We also calculated risk estimates for MACE using lipid measures as continuous variables. In the fully adjusted model, the high triglyceride plus low HDL-C cholesterol phenotype demonstrated risk that was at least as high as the highest LDL-C sub-group phenotype for CVD mortality (Hazard ratio {HR} 1.58 vs 1.48), MI (HR 1.53 vs 1.58), HF (HR 1.47 vs 1.20), stroke (HR 2.02 vs 1.43), and MACE (HR 1.58 vs 1.38). When modeled continuously, the HR per SD for MACE was 1.12 (p = 0.03) for LDL-C and 1.19–1.20 (p < 0.001) for triglycerides or remnant cholesterol.

Conclusions

Participants with the high triglyceride/low HDL-C phenotype had equivalent or higher CVD risk than those with the high LDL-C phenotype. Further studies are necessary to determine whether lipid phenotyping accounts for the substantial CVD risk not explained by LDL cholesterol among individuals with type 2 diabetes.

方法和结果心血管健康研究参与者中,有糖尿病且基线时有空腹血脂图谱者(n = 866),按低密度脂蛋白胆固醇和高密度脂蛋白胆固醇/甘油三酯 (Tg) 图谱水平(低 Tg/ 高密度脂蛋白胆固醇;高 Tg/ 低密度脂蛋白胆固醇;仅高 Tg 或仅低密度脂蛋白胆固醇)分别进行分类。我们进行了 Cox 多变量回归分析,以评估与每种血脂类别相关的心血管疾病死亡率、心肌梗死(MI)事件、心力衰竭(HF)、中风和复合 MACE(MI、HF、中风和心血管疾病死亡率)的风险。我们还将血脂指标作为连续变量计算了MACE的风险估计值。在完全调整模型中,在心血管疾病死亡率(危险比{HR} 1.58 vs 1.48)、心肌梗死(HR 1.53 vs 1.58)、高密度脂蛋白胆固醇(HR 1.47 vs 1.20)、中风(HR 2.02 vs 1.43)和 MACE(HR 1.58 vs 1.38)方面,高甘油三酯加低高密度脂蛋白胆固醇表型的风险至少与最高低密度脂蛋白胆固醇亚组表型一样高。结论高甘油三酯/低高密度脂蛋白胆固醇表型的参与者与高低密度脂蛋白胆固醇表型的参与者相比,具有同等或更高的心血管疾病风险。有必要开展进一步研究,以确定血脂表型是否解释了 2 型糖尿病患者中低密度脂蛋白胆固醇无法解释的巨大心血管疾病风险。
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引用次数: 0
EARLY METABOLIC IMBALANCE IN YOUNG ADULTS HAS VARIABLE IMPACT ON 35-YEAR MORTALITY RISK 青壮年早期代谢失衡对 35 年死亡风险的影响各不相同
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100827
Teresa J. Yoon BS

Therapeutic Area

ASCVD/CVD Risk Factors

Background

Early metabolic imbalance (EMI) is a hidden condition characterized by compensated insulin resistance, often accompanied by oxidative stress, subclinical inflammation, and hypoxia. Individuals with EMI have fasting glucose, triglycerides, hemoglobin A1c, and high-density lipoprotein cholesterol (HDL-C) values all within normal limits. Thus, EMI is undetected in routine screening for diabetes and cardiovascular risk. Previously, we reported that EMI is an independent risk factor for type 2 diabetes (T2D) and atherosclerotic cardiovascular disease (CVD). Hypothesis: EMI in young adults increases the 35-year mortality risk compared with healthy, balanced metabolism.

Methods

We conducted a retrospective cohort study using data from the Coronary Artery Risk Development in Young Adults (CARDIA) study. The parent study began in 1985, enrolling 5,113 young adults ages 18-30, with study visits every five years for 35 years. For this retrospective analysis, the baseline exclusion criteria were fasting hyperglycemia, hypertriglyceridemia, low HDL-C, pregnancy, diabetes, or CVD; n=3,292. Cox proportional hazards regression analysis was performed using Stata 18.0 (StataCorp). The primary exposure variable was EMI, measured as the upper and lower halves of baseline homeostatic model assessment of insulin resistance v.2 (HOMA2-IR). The baseline covariates included other known causes of death. The primary outcome was time-to-incident mortality or censor. Mortality risk was measured as a Cox hazard ratio (HR) with 95% confidence interval (CI) and p-value. Each model met the assumption of proportional hazards.

Results

Over the 35-year follow-up period, 280 individuals died for a cumulative incidence of 8.5%. Cox Model 1 incorporated categorical HOMA2-IR (high/low) at baseline. Model 2 included the interaction between HOMA2-IR, sex, and race as a categorical variable (Table 1). Model 3 included the interaction variable from Model 2, along with other causes of death as covariates. As seen in Table 1, the Cox hazard ratios for EMI were modified by sex and race.

Conclusions

For young adults in CARDIA, EMI had a variable impact on 35-year mortality. The risk was modified by sex and race, even after adjusting for known risk factors. Further analysis is warranted.
治疗领域心血管疾病/心血管疾病风险因素背景早期代谢失衡(EMI)是一种隐性疾病,其特点是代偿性胰岛素抵抗,通常伴有氧化应激、亚临床炎症和缺氧。EMI 患者的空腹血糖、甘油三酯、血红蛋白 A1c 和高密度脂蛋白胆固醇 (HDL-C) 值均在正常范围内。因此,EMI 在糖尿病和心血管风险的常规筛查中未被发现。此前,我们曾报道 EMI 是 2 型糖尿病(T2D)和动脉粥样硬化性心血管疾病(CVD)的独立风险因素。假设:方法我们利用年轻人冠状动脉风险发展(CARDIA)研究的数据进行了一项回顾性队列研究。这项研究的母研究始于 1985 年,共招募了 5113 名 18-30 岁的年轻人,每五年进行一次访问,历时 35 年。此次回顾性分析的基线排除标准为空腹高血糖、高甘油三酯血症、低高密度脂蛋白胆固醇、妊娠、糖尿病或心血管疾病;人数为 3292 人。使用 Stata 18.0 (StataCorp) 进行了 Cox 比例危险回归分析。主要暴露变量为 EMI,以基线胰岛素抵抗稳态模型评估 v.2(HOMA2-IR)的上半部分和下半部分测量。基线协变量包括其他已知死因。主要结果是死亡或剔除的发生时间。死亡率风险以带有 95% 置信区间 (CI) 和 p 值的 Cox 危险比 (HR) 表示。结果在 35 年的随访期内,共有 280 人死亡,累计发生率为 8.5%。Cox 模型 1 包括基线 HOMA2-IR(高/低)的分类。模型 2 将 HOMA2-IR、性别和种族之间的交互作用作为分类变量(表 1)。模型 3 包括模型 2 中的交互变量,以及作为协变量的其他死因。如表 1 所示,EMI 的 Cox 危险比因性别和种族而异。结论对于 CARDIA 中的年轻成人,EMI 对 35 年死亡率的影响不一,即使在调整了已知的风险因素后,其风险也会因性别和种族的不同而有所变化。有必要进行进一步分析。
{"title":"EARLY METABOLIC IMBALANCE IN YOUNG ADULTS HAS VARIABLE IMPACT ON 35-YEAR MORTALITY RISK","authors":"Teresa J. Yoon BS","doi":"10.1016/j.ajpc.2024.100827","DOIUrl":"10.1016/j.ajpc.2024.100827","url":null,"abstract":"<div><h3>Therapeutic Area</h3><div>ASCVD/CVD Risk Factors</div></div><div><h3>Background</h3><div>Early metabolic imbalance (EMI) is a hidden condition characterized by compensated insulin resistance, often accompanied by oxidative stress, subclinical inflammation, and hypoxia. Individuals with EMI have fasting glucose, triglycerides, hemoglobin A1c, and high-density lipoprotein cholesterol (HDL-C) values all within normal limits. Thus, EMI is undetected in routine screening for diabetes and cardiovascular risk. Previously, we reported that EMI is an independent risk factor for type 2 diabetes (T2D) and atherosclerotic cardiovascular disease (CVD). <strong>Hypothesis:</strong> EMI in young adults increases the 35-year mortality risk compared with healthy, balanced metabolism.</div></div><div><h3>Methods</h3><div>We conducted a retrospective cohort study using data from the Coronary Artery Risk Development in Young Adults (CARDIA) study. The parent study began in 1985, enrolling 5,113 young adults ages 18-30, with study visits every five years for 35 years. For this retrospective analysis, the baseline exclusion criteria were fasting hyperglycemia, hypertriglyceridemia, low HDL-C, pregnancy, diabetes, or CVD; n=3,292. Cox proportional hazards regression analysis was performed using Stata 18.0 (StataCorp). The primary exposure variable was EMI, measured as the upper and lower halves of baseline homeostatic model assessment of insulin resistance v.2 (HOMA2-IR). The baseline covariates included other known causes of death. The primary outcome was time-to-incident mortality or censor. Mortality risk was measured as a Cox hazard ratio (HR) with 95% confidence interval (CI) and p-value. Each model met the assumption of proportional hazards.</div></div><div><h3>Results</h3><div>Over the 35-year follow-up period, 280 individuals died for a cumulative incidence of 8.5%. Cox Model 1 incorporated categorical HOMA2-IR (high/low) at baseline. Model 2 included the interaction between HOMA2-IR, sex, and race as a categorical variable (Table 1). Model 3 included the interaction variable from Model 2, along with other causes of death as covariates. As seen in Table 1, the Cox hazard ratios for EMI were modified by sex and race.</div></div><div><h3>Conclusions</h3><div>For young adults in CARDIA, EMI had a variable impact on 35-year mortality. The risk was modified by sex and race, even after adjusting for known risk factors. Further analysis is warranted.</div></div>","PeriodicalId":72173,"journal":{"name":"American journal of preventive cardiology","volume":"19 ","pages":"Article 100827"},"PeriodicalIF":4.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142423106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FIRST PRESENTATION OF CARDIOVASCULAR DISEASE IN PREVIOUSLY HEALTHY INDIVIDUALS: THE MULTI-ETHNIC STUDY OF ATHEROSCLEROSIS 以前健康的人首次出现心血管疾病:多种族动脉粥样硬化研究
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100746
Jonathan Kermanshahchi BA

Therapeutic Area

ASCVD/CVD Risk Assessment

Background

The initial presentation of atherosclerotic cardiovascular disease (ASCVD) may be a severe, sometimes fatal outcome, and there is need for improved understanding and identification of ASCVD in asymptomatic individuals.

Methods

Using data from 6,779 participants the Multi-Ethnic Study of Atherosclerosis (MESA) without known cardiovascular disease, we evaluated the association between traditional risk factors and coronary artery calcium (CAC) with first ASCVD event (angina, stroke, myocardial infarction [MI], or death/resuscitated cardiac arrest [RCA]) in cox proportional hazards models.

Results

Overall, 1037 participants (15.3%) experienced a first ASCVD event over median follow-up of 15.8 years. The most common first presentation was death/RCA (27.7%). Those with CAC>0 were significantly more likely to present with angina than those with CAC=0 (26.% vs 13.0%, overall p<0.001). Black (35.6%) and Chinese (28.7%) individuals were more likely to present with death/RCA than White individuals (24.8%, overall p=0.011) and Black (25.7%) and Hispanic (29.3%) individuals were more likely to present with stroke than White (21.7%, p<0.001 overall) individuals. Women were more likely to present with death/RCA than men (29.8 vs 26.3%, overall p<0.001). Age, systolic blood pressure, diabetes, and smoking were significantly associated with a first presentation of death/RCA, while female sex and HDL-C were inversely associated. CAC (ln-transformed) was also significantly associated with first presentation of death/RCA (HR 1.15, 95% CI 1.10-1.22) and improved risk prediction when added to the Pooled Cohort Equations (continuous NRI 0.6081, 95% CI 0.4971-0.7141).

Conclusions

In previously asymptomatic individuals, the most common initial presentation of ASCVD was death/resuscitated cardiac arrest. In addition to traditional risk factors, CAC was associated with an initial presentation of death/RCA, and improved risk prediction for death/RCA when added to traditional risk factors. These findings suggest CAC scoring may help to identify individuals at risk for death or resuscitated cardiac arrest as a first presentation of ASCVD.
治疗领域ASCVD/心血管疾病风险评估背景初次出现动脉粥样硬化性心血管疾病(ASCVD)可能是一种严重的结果,有时甚至是致命的结果,因此需要更好地了解和识别无症状个体的 ASCVD。方法利用多种族动脉粥样硬化研究(MESA)中 6779 名未患已知心血管疾病的参与者的数据,在 cox 比例危险模型中评估了传统危险因素和冠状动脉钙(CAC)与首次 ASCVD 事件(心绞痛、中风、心肌梗死或死亡/心脏骤停抢救[RCA])之间的关系。结果在15.8年的中位随访期间,共有1037名参与者(15.3%)经历了首次ASCVD事件。最常见的首次事件是死亡/RCA(27.7%)。CAC>0者出现心绞痛的几率明显高于CAC=0者(26.0% vs 13.0%,总P<0.001)。黑人(35.6%)和中国人(28.7%)比白人(24.8%,总体 p=0.011)更容易出现死亡/心绞痛,黑人(25.7%)和西班牙裔(29.3%)比白人(21.7%,总体 p<0.001)更容易出现中风。女性比男性更容易出现死亡/RCA(29.8% vs 26.3%,总体 p<0.001)。年龄、收缩压、糖尿病和吸烟与首次出现死亡/RCA显著相关,而女性性别和高密度脂蛋白胆固醇则成反比。CAC(ln-transformed)也与首次出现死亡/心脏骤停显著相关(HR 1.15,95% CI 1.10-1.22),当加入到集合队列方程中时(连续 NRI 0.6081,95% CI 0.4971-0.7141),其风险预测能力有所提高。除了传统的风险因素外,CAC还与死亡/心脏骤停的初始表现相关,并且在加入传统风险因素后,还能改善死亡/心脏骤停的风险预测。这些研究结果表明,CAC评分可能有助于识别首次出现ASCVD时有死亡或心脏骤停复苏风险的人。
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引用次数: 0
GENETICALLY PREDICTED LIPOPROTEIN(A) IS ASSOCIATED WITH CORONARY ARTERY PLAQUE SEVERITY INDEPENDENT OF LOW-DENSITY LIPOPROTEIN CHOLESTEROL 基因预测的脂蛋白(a)与冠状动脉斑块严重程度相关,与低密度脂蛋白胆固醇无关
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100757
Shoa L. Clarke MD, PhD

Therapeutic Area

ASCVD/CVD Risk Factors

Background

Elevated Lipoprotein(a) [Lp(a)] is a causal risk factor for atherosclerotic cardiovascular disease, but mechanisms are debated. The role of Lp(a) in atherogenesis has been questioned by prior small studies showing a lack of association with markers of atherosclerosis, including carotid intima media thickness and coronary artery calcification. Some have hypothesized that the association between Lp(a) and atherosclerosis may depend on low-density lipoprotein cholesterol (LDL-C).

Methods

We examined participants of the Million Veteran Program who have undergone an invasive angiogram. The primary exposure was genetically predicted Lp(a), estimated by a validated polygenic score consisting of 43 single nucleotide variants at the LPA locus. The primary outcome was coronary artery plaque severity, categorized as normal, non-obstructive disease, 1-vessel disease, 2-vessel disease, and 3-vessel or left main disease. Multivariable multinomial regression was used to assess the association between genetically predicted Lp(a) and coronary plaque severity, independent of age, sex, LDL-C, lipid-lowering therapy, hypertension, diabetes, tobacco use, and genetic principal components. Similar logistic regression models were used to assess the overall risk for obstructive plaque. Odds ratios were calculated per 1 standard deviation increase in predicted Lp(a) and by comparing the top 20% to bottom 80%.

Results

Among 18,927 adults of genetically inferred European ancestry (mean age 66 years; 96.8% male), we observed significant associations between genetically predicted Lp(a) and all categories of obstructive plaque. The association was borderline significant for non-obstructive plaque. We observed a consistent pattern of increasing effect sizes for increasingly severe categories of atherosclerosis (Figure [A]). Participants with genetically predicted high Lp(a) were at significantly increased risk for obstructive plaque across LDL-C levels (Figure [B]).

Conclusions

Genetically predicted Lp(a) is positively associated with coronary plaque severity independent of LDL-C, consistent with Lp(a) promoting atherogenesis. However, Lp(a) may contribute more to plaque progression towards obstructive disease than to plaque initiation. Our findings suggest that Lp(a) reduction could protect against the development of obstructive coronary plaque beyond what might be achieved by LDL-C reduction alone.
治疗领域心血管疾病/心血管疾病风险因素背景升高的脂蛋白(a)[Lp(a)]是动脉粥样硬化性心血管疾病的致病风险因素,但其机制尚存在争议。之前的一些小型研究显示,脂蛋白(a)与动脉粥样硬化的标志物(包括颈动脉内膜厚度和冠状动脉钙化)缺乏关联,这对脂蛋白(a)在动脉粥样硬化发生过程中的作用提出了质疑。一些人假设脂蛋白(a)与动脉粥样硬化之间的关系可能取决于低密度脂蛋白胆固醇(LDL-C)。主要暴露因子是基因预测的脂蛋白(a),由 LPA 基因座上 43 个单核苷酸变异体组成的有效多基因评分估算得出。主要结果是冠状动脉斑块严重程度,分为正常、非阻塞性疾病、1血管疾病、2血管疾病、3血管或左主干疾病。多变量多项式回归用于评估遗传预测的脂蛋白(a)与冠状动脉斑块严重程度之间的关系,不受年龄、性别、低密度脂蛋白胆固醇、降脂治疗、高血压、糖尿病、吸烟和遗传主成分的影响。类似的逻辑回归模型用于评估阻塞性斑块的总体风险。结果在 18927 名经基因推断具有欧洲血统的成年人(平均年龄 66 岁;96.8% 为男性)中,我们观察到基因预测 Lp(a) 与所有类别的阻塞性斑块之间存在显著关联。在非阻塞性斑块方面,两者之间的关系也不太明显。我们观察到一种一致的模式,即动脉粥样硬化程度越严重,效应大小越大(图 [A])。结论基因预测的脂蛋白(a)与冠状动脉斑块的严重程度呈正相关,而与低密度脂蛋白胆固醇无关,这与脂蛋白(a)促进动脉粥样硬化是一致的。然而,脂蛋白(a)对斑块向阻塞性疾病发展的作用可能大于斑块的形成。我们的研究结果表明,降低脂蛋白(a)可防止阻塞性冠状动脉斑块的形成,而不是仅靠降低低密度脂蛋白胆固醇。
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引用次数: 0
DISCREPANCIES IN AMI MORTALITY IN THE US SOUTHERN BORDER REGION 1999-2020 1999-2020 年美国南部边境地区阿米死亡率的差异
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100735
Ramon H Guillen MD

Therapeutic Area

ASCVD/CVD in Special Populations

Background

The US-Mexican border region (BR) faces distinct demographic and health challenges. Analyzing premature acute myocardial infarction (AMI) mortality disparities can inform targeted health strategies.

Methods

Mortality data for premature AMI (<55y men, <65y women) from 1999-2019 were extracted from CDC death certificate data. ANOVA tests were done for race & BR, and for Hispanic origin & BR. Join point regression with tests for parallelism was applied to significant ANOVA subsets to analyze time trends.

Results

ANOVA revealed significantly higher mortality rates for Hispanics in the BR. Join point regression indicated parallel downtrends in mortality for non-Hispanics in both areas with an average annual percentage change (AAPC) of –2.4916 (p<0.05). Hispanic mortality trended up in the BR (AAPC = +1.2886, p<0.05) and down in the non-BR (AAPC = -1.1370, p<0.05). The parallelism test was refuted for Hispanic groups, with two observed trends in the non-BR: significant downtrend with an annual percentage change (APC) of -2.7949 (p<0.05) from 1999-2009 and no significant change post-2009.

Conclusions

Hispanic groups in the US-Mexican border region face higher premature AMI mortality rates. AMI mortality trended down improved for non-Hispanic groups and Hispanic groups in the non-BNR, while Hispanic border region rates are consistently rising worsening despite improvements in myocardial infarction treatment standards. This highlights the need to further investigate specific challenges and methods to improve in cardiovascular health post myocardial infarction care faced by Latinx communities in the US-Mexican border region.
治疗领域ASCVD/特殊人群中的心血管疾病背景美国-墨西哥边境地区(BR)面临着独特的人口和健康挑战。分析过早急性心肌梗死(AMI)死亡率的差异可为有针对性的健康策略提供信息。方法从疾病预防控制中心的死亡证明数据中提取 1999-2019 年过早急性心肌梗死(55 岁男性、65 岁女性)的死亡率数据。对种族<BR和西班牙裔<BR进行方差分析测试。对重要的方差分析子集进行了带平行测试的连接点回归,以分析时间趋势。连接点回归表明,两个地区非西班牙裔的死亡率呈平行下降趋势,平均年百分比变化(AAPC)为-2.4916(p<0.05)。西班牙裔死亡率在 BR 地区呈上升趋势(AAPC = +1.2886, p<0.05),而在非 BR 地区呈下降趋势(AAPC = -1.1370, p<0.05)。西语裔群体的平行性检验被驳倒了,在非BR中观察到两种趋势:1999-2009年期间呈显著下降趋势,年百分比变化(APC)为-2.7949(p<0.05),2009年后无显著变化。非美墨边境地区的非西班牙裔群体和西班牙裔群体的急性心肌梗死死亡率呈下降趋势,而西班牙裔边境地区的急性心肌梗死死亡率则持续上升,尽管心肌梗死治疗标准有所改善。这凸显了进一步研究改善美墨边境地区拉美裔社区心肌梗死后心血管健康护理所面临的具体挑战和方法的必要性。
{"title":"DISCREPANCIES IN AMI MORTALITY IN THE US SOUTHERN BORDER REGION 1999-2020","authors":"Ramon H Guillen MD","doi":"10.1016/j.ajpc.2024.100735","DOIUrl":"10.1016/j.ajpc.2024.100735","url":null,"abstract":"<div><h3>Therapeutic Area</h3><div>ASCVD/CVD in Special Populations</div></div><div><h3>Background</h3><div>The US-Mexican border region (BR) faces distinct demographic and health challenges. Analyzing premature acute myocardial infarction (AMI) mortality disparities can inform targeted health strategies.</div></div><div><h3>Methods</h3><div>Mortality data for premature AMI (&lt;55y men, &lt;65y women) from 1999-2019 were extracted from CDC death certificate data. ANOVA tests were done for race &amp; BR, and for Hispanic origin &amp; BR. Join point regression with tests for parallelism was applied to significant ANOVA subsets to analyze time trends.</div></div><div><h3>Results</h3><div>ANOVA revealed significantly higher mortality rates for Hispanics in the BR. Join point regression indicated parallel downtrends in mortality for non-Hispanics in both areas with an average annual percentage change (AAPC) of –2.4916 (p&lt;0.05). Hispanic mortality trended up in the BR (AAPC = +1.2886, p&lt;0.05) and down in the non-BR (AAPC = -1.1370, p&lt;0.05). The parallelism test was refuted for Hispanic groups, with two observed trends in the non-BR: significant downtrend with an annual percentage change (APC) of -2.7949 (p&lt;0.05) from 1999-2009 and no significant change post-2009.</div></div><div><h3>Conclusions</h3><div>Hispanic groups in the US-Mexican border region face higher premature AMI mortality rates. AMI mortality trended down improved for non-Hispanic groups and Hispanic groups in the non-BNR, while Hispanic border region rates are consistently rising worsening despite improvements in myocardial infarction treatment standards. This highlights the need to further investigate specific challenges and methods to improve in cardiovascular health post myocardial infarction care faced by Latinx communities in the US-Mexican border region.</div></div>","PeriodicalId":72173,"journal":{"name":"American journal of preventive cardiology","volume":"19 ","pages":"Article 100735"},"PeriodicalIF":4.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DEMYSTIFYING BAG3 CARDIOMYOPATHY 揭开 bag3 心肌病的神秘面纱
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100789
Yulith Roca Alvarez MD

Therapeutic Area

Heart Failure

Case Presentation

A 56-year-old male with progressive exertional dyspnea and ankle edema was evaluated in the cardiology office. The patient had no overt traditional cardiac risk factors. ECG showed sinus rhythm and a right bundle branch block. The echocardiogram showed an LVEF of 45-50% and a severely dilated LV measuring 7.2 cm at end-diastole, with an abnormal global longitudinal strain (GLS) (11.6%) and apical and mid-wall sparing. Ischemic workup was negative. Genetic testing revealed a pathogenic variant in BAG3 (p.Glu471Argfs*95). His father and two siblings were also carriers of the same variant. He was treated with beta-blockers, angiotensin-neprilysin inhibitor, mineralocorticoid receptor antagonist, and an SGLT2 inhibitor. Frequent runs of non-sustained ventricular tachycardia prompted primary prevention implantable cardioverter defibrillator placement. Close follow-up was arranged, given the high risk for deterioration and progressive heart failure.

Background

The cause of dilated cardiomyopathy (DCM) can be determined in approximately 40% of cases due to genetic testing now being widely available. BAG3 mutations account for 2-5% of DCM cases; BAG 3 gene encodes a protein crucial for maintaining the structure and function of cardiomyocytes. Mutations in BAG3 disrupt its normal function, leading to myofibrillar disarray and systolic dysfunction.

Conclusions

The BAG3 mutation, in this case, resulted in a premature translational stop of the BAG3 gene, disrupting the last 105 amino acids of the BAG3 protein. Inheritance follows an autosomal dominant pattern, and penetrance is 40%. Left ventricular global longitudinal strain (GLS) may inform outcomes beyond LVEF in patients with heart failure and reduced ejection fraction. Currently, preliminary research involving gene therapy in animal models shows that replenishing normal levels of BAG3 may have salutary effects. However, essential questions remain on how it can be implemented effectively in human subjects.
治疗领域心力衰竭病例介绍一名 56 岁的男性患者因进行性劳力性呼吸困难和踝关节水肿在心脏病诊室接受了评估。患者没有明显的传统心脏风险因素。心电图显示为窦性心律和右束支传导阻滞。超声心动图显示 LVEF 为 45-50%,左心室严重扩张,舒张末期达 7.2 厘米,整体纵向应变(GLS)异常(11.6%),心尖和中壁疏松。缺血检查结果为阴性。基因检测发现,BAG3存在致病变异(p.Glu471Argfs*95)。他的父亲和两个兄弟姐妹也是相同变异的携带者。他接受了β-受体阻滞剂、血管紧张素-肾素抑制剂、矿皮质激素受体拮抗剂和 SGLT2 抑制剂的治疗。由于频繁出现非持续性室性心动过速,因此需要植入一级预防植入式心脏除颤器。鉴于病情恶化和进展性心力衰竭的风险很高,医生安排了密切随访。背景由于基因检测现已广泛应用,约 40% 的扩张型心肌病(DCM)病因可以确定。BAG3 基因突变占 DCM 病例的 2-5%;BAG 3 基因编码一种对维持心肌细胞结构和功能至关重要的蛋白质。BAG3 基因突变会破坏其正常功能,导致肌纤维混乱和收缩功能障碍。结论该病例中的 BAG3 基因突变导致 BAG3 基因过早翻译停止,破坏了 BAG3 蛋白的最后 105 个氨基酸。遗传方式为常染色体显性遗传,渗透率为 40%。左心室整体纵向应变(GLS)可为心力衰竭和射血分数降低患者提供 LVEF 之外的其他结果信息。目前,涉及动物模型基因治疗的初步研究表明,补充正常水平的 BAG3 可能会产生有益的影响。然而,如何在人类受试者身上有效实施基因疗法仍是一个基本问题。
{"title":"DEMYSTIFYING BAG3 CARDIOMYOPATHY","authors":"Yulith Roca Alvarez MD","doi":"10.1016/j.ajpc.2024.100789","DOIUrl":"10.1016/j.ajpc.2024.100789","url":null,"abstract":"<div><h3>Therapeutic Area</h3><div>Heart Failure</div></div><div><h3>Case Presentation</h3><div>A 56-year-old male with progressive exertional dyspnea and ankle edema was evaluated in the cardiology office. The patient had no overt traditional cardiac risk factors. ECG showed sinus rhythm and a right bundle branch block. The echocardiogram showed an LVEF of 45-50% and a severely dilated LV measuring 7.2 cm at end-diastole, with an abnormal global longitudinal strain (GLS) (11.6%) and apical and mid-wall sparing. Ischemic workup was negative. Genetic testing revealed a pathogenic variant in BAG3 (p.Glu471Argfs*95). His father and two siblings were also carriers of the same variant. He was treated with beta-blockers, angiotensin-neprilysin inhibitor, mineralocorticoid receptor antagonist, and an SGLT2 inhibitor. Frequent runs of non-sustained ventricular tachycardia prompted primary prevention implantable cardioverter defibrillator placement. Close follow-up was arranged, given the high risk for deterioration and progressive heart failure.</div></div><div><h3>Background</h3><div>The cause of dilated cardiomyopathy (DCM) can be determined in approximately 40% of cases due to genetic testing now being widely available. BAG3 mutations account for 2-5% of DCM cases; BAG 3 gene encodes a protein crucial for maintaining the structure and function of cardiomyocytes. Mutations in BAG3 disrupt its normal function, leading to myofibrillar disarray and systolic dysfunction.</div></div><div><h3>Conclusions</h3><div>The BAG3 mutation, in this case, resulted in a premature translational stop of the BAG3 gene, disrupting the last 105 amino acids of the BAG3 protein. Inheritance follows an autosomal dominant pattern, and penetrance is 40%. Left ventricular global longitudinal strain (GLS) may inform outcomes beyond LVEF in patients with heart failure and reduced ejection fraction. Currently, preliminary research involving gene therapy in animal models shows that replenishing normal levels of BAG3 may have salutary effects. However, essential questions remain on how it can be implemented effectively in human subjects.</div></div>","PeriodicalId":72173,"journal":{"name":"American journal of preventive cardiology","volume":"19 ","pages":"Article 100789"},"PeriodicalIF":4.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LIPOPROTEIN(A) AND CARDIOVASCULAR RISK. A RETROSPECTIVE COHORT STUDY FROM NYC/HHC+ PUBLIC HOSPITAL IN NEW YORK CITY 脂蛋白(a)与心血管风险。一项来自纽约市 NYC/hhc+ 公立医院的回顾性队列研究
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100759
Natalia Nazarenko MD

Therapeutic Area

ASCVD/CVD Risk Factors

Background

Lipoprotein(a) [Lp(a)] is a independent genetic risk factor for cardiovascular disease with heritability rates ranging from 70% to 90%. Our study aimed to compare demographic and clinical characteristics in patients with normal vs. abnormal Lp(a).

Methods

We conducted a retrospective chart review at Jacobi Medical Center from August 2020 to September 2023 and we identified 78 patients with available Lp(a) measurement.

Results

Among 78 patients, 32 (41.03%) were female, and 46 (58.97%) were male. 32 patients had abnormal Lp(a) (>75 nmol/L) with a mean of 143.35 nmol/L, mean BMI of 30.34 and median age of 53.5 years. Abnormal Lp(a) correlated with higher LDL levels (111.01 vs. 91.23 mg/dL; p=0.044). Increased Lp(a) was more prevalent among African Americans. No significant association was found between abnormal Lp(a) and aortic or mitral valve calcifications. In the cohort with abnormal Lp(a) levels, the prevalence of heart failure with preserved ejection fraction (HFpEF) was 100%, while the presence of heart failure with reduced ejection was notably lower at 24% (p=0.008). The demographic and clinical characteristics are presented in Table 1.

Conclusions

Our study found no significant difference in comorbidities between both groups but did show a correlation with elevated LDL. HFpEF was more prevalent among patients with abnormal Lp(a).
治疗领域心血管疾病/心血管疾病风险因素背景脂蛋白(a)[Lp(a)]是心血管疾病的独立遗传风险因素,其遗传率为 70% 至 90%。我们的研究旨在比较脂蛋白(a)正常与脂蛋白(a)异常患者的人口统计学特征和临床特征。方法我们对雅各比医疗中心 2020 年 8 月至 2023 年 9 月期间的病历进行了回顾性分析,并确定了 78 名可进行脂蛋白(a)测量的患者。32 名患者的脂蛋白(a)异常(75 nmol/L),平均值为 143.35 nmol/L,平均体重指数(BMI)为 30.34,中位年龄为 53.5 岁。脂蛋白(a)异常与较高的低密度脂蛋白水平相关(111.01 vs. 91.23 mg/dL;p=0.044)。非裔美国人的脂蛋白(a)增高更为普遍。在 Lp(a) 异常与主动脉瓣或二尖瓣钙化之间没有发现明显的关联。在脂蛋白(a)水平异常的人群中,射血分数保留型心力衰竭(HFpEF)的发病率为 100%,而射血分数降低型心力衰竭的发病率明显较低,仅为 24%(P=0.008)。两组患者的人口统计学和临床特征见表 1。在脂蛋白(a)异常的患者中,HFpEF 的发病率更高。
{"title":"LIPOPROTEIN(A) AND CARDIOVASCULAR RISK. A RETROSPECTIVE COHORT STUDY FROM NYC/HHC+ PUBLIC HOSPITAL IN NEW YORK CITY","authors":"Natalia Nazarenko MD","doi":"10.1016/j.ajpc.2024.100759","DOIUrl":"10.1016/j.ajpc.2024.100759","url":null,"abstract":"<div><h3>Therapeutic Area</h3><div>ASCVD/CVD Risk Factors</div></div><div><h3>Background</h3><div>Lipoprotein(a) [Lp(a)] is a independent genetic risk factor for cardiovascular disease with heritability rates ranging from 70% to 90%. Our study aimed to compare demographic and clinical characteristics in patients with normal vs. abnormal Lp(a).</div></div><div><h3>Methods</h3><div>We conducted a retrospective chart review at Jacobi Medical Center from August 2020 to September 2023 and we identified 78 patients with available Lp(a) measurement.</div></div><div><h3>Results</h3><div>Among 78 patients, 32 (41.03%) were female, and 46 (58.97%) were male. 32 patients had abnormal Lp(a) (&gt;75 nmol/L) with a mean of 143.35 nmol/L, mean BMI of 30.34 and median age of 53.5 years. Abnormal Lp(a) correlated with higher LDL levels (111.01 vs. 91.23 mg/dL; p=0.044). Increased Lp(a) was more prevalent among African Americans. No significant association was found between abnormal Lp(a) and aortic or mitral valve calcifications. In the cohort with abnormal Lp(a) levels, the prevalence of heart failure with preserved ejection fraction (HFpEF) was 100%, while the presence of heart failure with reduced ejection was notably lower at 24% (p=0.008). The demographic and clinical characteristics are presented in Table 1.</div></div><div><h3>Conclusions</h3><div>Our study found no significant difference in comorbidities between both groups but did show a correlation with elevated LDL. HFpEF was more prevalent among patients with abnormal Lp(a).</div></div>","PeriodicalId":72173,"journal":{"name":"American journal of preventive cardiology","volume":"19 ","pages":"Article 100759"},"PeriodicalIF":4.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EVALUATING MISINFORMATION REGARDING CARDIOVASCULAR DISEASE PREVENTION OBTAINED ON A POPULAR, PUBLICLY ACCESSIBLE ARTIFICIAL INTELLIGENCE MODEL (GPT-4) 评估在一个流行的、可公开访问的人工智能模型(GPT-4)上获得的有关心血管疾病预防的错误信息
IF 4.3 Q1 CARDIAC & CARDIOVASCULAR SYSTEMS Pub Date : 2024-09-01 DOI: 10.1016/j.ajpc.2024.100806
Ashish Sarraju MD

Therapeutic Area

Other: Artificial intelligence; Misinformation

Background

Misinformation regarding CVD prevention is prevalent on the internet and on social media. Chat-based artificial intelligence (AI) models such as ChatGPT have gained over 100 million users, are publicly accessible, and may provide appropriate information for simple CVD prevention topics. Whether these public AI models may propagate misinformation regarding CVD prevention is uncertain.

Methods

This study was performed in March 2024 using the subscription-based version of GPT-4 (OpenAI, USA). Prompts regarding six CVD prevention topics (statin therapy and muscle-side effects, dementia, and liver disease; fish oil; supplements; and low-density lipoprotein-cholesterol and heart disease) were posed. Prompts were framed in two tones: a neutral tone and a misinformation-prompting tone. The misinformation-prompting tone requested specific arguments and scientific references to support misinformation. Each tone and topic was prompted in a different chatbot instance. Each response was reviewed by a board-certified cardiologist specializing in preventive cardiology at a tertiary care center. If a response had multiple bullet-points with individual scientific references, each bullet-point was graded separately. Responses were graded as appropriate (accurate content and references), borderline (minor inaccuracies or references published >20 years ago), or inappropriate (inaccurate content and/or references, including non-existent references).

Results

For the six prompts posed with a neutral tone, all responses lacked scientific references and were graded as appropriate (100%). For all six prompts posed with a misinformation-prompting tone, each response consisted of multiple discrete bullet-points with a scientific reference for each individual point. Of 31 bullet-points across the six topics obtained using a misinformation-prompting tone, 32.2% (10/31) were graded as appropriate, 19.4% (6/31) were graded as borderline, and 48.4% (15/31) were graded as inappropriate.

Conclusions

In this exploratory study, GPT-4 – a popular and publicly accessible chat-based AI model – was easily prompted to support CVD prevention misinformation. Misinformation-supporting arguments and scientific references were inappropriate due to inaccurate content and/or references nearly 50% of the time. Robust research efforts and policies are needed to study and prevent AI-enabled propagation of misinformation regarding CVD prevention.
治疗领域其他:人工智能;错误信息背景有关心血管疾病预防的错误信息在互联网和社交媒体上十分普遍。基于聊天的人工智能(AI)模型(如 ChatGPT)已拥有超过 1 亿用户,可公开访问,并可为简单的心血管疾病预防话题提供适当的信息。这些公开的人工智能模型是否会传播有关心血管疾病预防的错误信息尚不确定。方法本研究于 2024 年 3 月使用订阅版 GPT-4 (OpenAI,美国)进行。研究人员就六个心血管疾病预防主题(他汀类药物治疗和肌肉副作用、痴呆症和肝病;鱼油;补充剂;低密度脂蛋白胆固醇和心脏病)提出了提示。提示语有两种语调:中性语调和错误信息提示语调。错误信息提示语气要求提供支持错误信息的具体论据和科学参考资料。每种语气和主题都在不同的聊天机器人实例中提示。每条回复都由一家三级医疗中心的预防心脏病专业认证心脏病专家进行审核。如果一个回复有多个要点,并附有单独的科学参考文献,则每个要点单独评分。结果对于以中性语气提出的六条提示,所有回答都缺乏科学参考文献,被评为适当(100%)。对于以错误信息提示语气提出的所有六条提示,每条回答都由多个不连续的要点组成,每个要点都有科学参考文献。在使用错误信息提示语气获得的六个主题的 31 个要点中,32.2%(10/31)被评为适当,19.4%(6/31)被评为边缘,48.4%(15/31)被评为不适当。由于内容和/或引用不准确,近 50% 的时间里错误信息支持的论据和科学引用都是不恰当的。需要开展大量研究工作并制定相关政策,以研究和防止人工智能传播有关心血管疾病预防的错误信息。
{"title":"EVALUATING MISINFORMATION REGARDING CARDIOVASCULAR DISEASE PREVENTION OBTAINED ON A POPULAR, PUBLICLY ACCESSIBLE ARTIFICIAL INTELLIGENCE MODEL (GPT-4)","authors":"Ashish Sarraju MD","doi":"10.1016/j.ajpc.2024.100806","DOIUrl":"10.1016/j.ajpc.2024.100806","url":null,"abstract":"<div><h3>Therapeutic Area</h3><div>Other: Artificial intelligence; Misinformation</div></div><div><h3>Background</h3><div>Misinformation regarding CVD prevention is prevalent on the internet and on social media. Chat-based artificial intelligence (AI) models such as ChatGPT have gained over 100 million users, are publicly accessible, and may provide appropriate information for simple CVD prevention topics. Whether these public AI models may propagate misinformation regarding CVD prevention is uncertain.</div></div><div><h3>Methods</h3><div>This study was performed in March 2024 using the subscription-based version of GPT-4 (OpenAI, USA). Prompts regarding six CVD prevention topics (statin therapy and muscle-side effects, dementia, and liver disease; fish oil; supplements; and low-density lipoprotein-cholesterol and heart disease) were posed. Prompts were framed in two tones: a neutral tone and a misinformation-prompting tone. The misinformation-prompting tone requested specific arguments and scientific references to support misinformation. Each tone and topic was prompted in a different chatbot instance. Each response was reviewed by a board-certified cardiologist specializing in preventive cardiology at a tertiary care center. If a response had multiple bullet-points with individual scientific references, each bullet-point was graded separately. Responses were graded as appropriate (accurate content and references), borderline (minor inaccuracies or references published &gt;20 years ago), or inappropriate (inaccurate content and/or references, including non-existent references).</div></div><div><h3>Results</h3><div>For the six prompts posed with a neutral tone, all responses lacked scientific references and were graded as appropriate (100%). For all six prompts posed with a misinformation-prompting tone, each response consisted of multiple discrete bullet-points with a scientific reference for each individual point. Of 31 bullet-points across the six topics obtained using a misinformation-prompting tone, 32.2% (10/31) were graded as appropriate, 19.4% (6/31) were graded as borderline, and 48.4% (15/31) were graded as inappropriate.</div></div><div><h3>Conclusions</h3><div>In this exploratory study, GPT-4 – a popular and publicly accessible chat-based AI model – was easily prompted to support CVD prevention misinformation. Misinformation-supporting arguments and scientific references were inappropriate due to inaccurate content and/or references nearly 50% of the time. Robust research efforts and policies are needed to study and prevent AI-enabled propagation of misinformation regarding CVD prevention.</div></div>","PeriodicalId":72173,"journal":{"name":"American journal of preventive cardiology","volume":"19 ","pages":"Article 100806"},"PeriodicalIF":4.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
American journal of preventive cardiology
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