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Pathophysiological determinants of arterial carbon dioxide tension (PaCO2) in spontaneously breathing and mechanically ventilated patients 自主呼吸和机械通气患者动脉二氧化碳张力(PaCO2)的病理生理决定因素
Pub Date : 2021-04-23 DOI: 10.21037/JECCM-21-7
S. John, R. Ozanne, K. Ho
© Journal of Emergency and Critical Care Medicine. All rights reserved. J Emerg Crit Care Med 2021 | http://dx.doi.org/10.21037/jeccm-21-7 Changes in PaCO2 in hospitalised patients are common and associated with an increased risk of morbidity and mortality. Although many clinicians are aware of the physiological mechanisms for PaCO2 homeostasis, they often have difficulty understanding how different compensatory mechanisms interact, and why such interactions are not always successful in achieving normocapnia. Incorrect interpretation of PaCO2 level—even when it is within the normal range—can have dangerous consequences in a spontaneously breathing patient (1). In this correspondence, we briefly describe how we can visually interpret the interactions of different pathophysiological mechanisms in determining PaCO2 in a spontaneously breathing or mechanically ventilated patient. In a spontaneously breathing patient, there are two determinants of PaCO2. The respiratory drive from the brain is an active system (which can increase minute ventilation up to 10 L/min for every 3 mmHg PaCO2 increment unless PaCO2 is exceedingly high) (1); whilst the mathematical relationship between alveolar CO2 tension (or PaCO2 for simplicity), carbon dioxide production (VCO2 ~200 mL/min for an average adult that can increase up to 10 folds with vigorous exercise) and minute alveolar ventilation represents a passive system (Figure 1A) (2). Minute alveolar ventilation is equal to the minute ventilation minus the wasted ventilation due to the physiological dead space which is the sum of anatomical and alveolar dead space. The interaction between the active and passive systems defines the PaCO2. An increase in respiratory drive due to hypoxia or metabolic acidosis will increase the ‘slope’ of the active respiratory drive system, resulting in an increase in minute ventilation which will reduce PaCO2. As such, a PaCO2 within the normal range is actually abnormal in the presence of significant metabolic acidosis, and would signify concomitant respiratory drive depression (1). Respiratory depression due to opioids and sedatives will shift the active respiratory drive system to the right (Figure 1B), resulting in a lower minute ventilation and a higher PaCO2. An increase in VCO2 will shift the passive system upward, resulting in a higher PaCO2, until the active respiratory drive system shifts the slope upward to normalise the PaCO2 (Figure 1C). An increase in alveolar dead space—which can occur due to emphysema, reduced pulmonary blood flow without a corresponding reduction in ventilation or overventilating poorly perfused alveoli [i.e., ↑ overall ventilation to perfusion (V/Q) ratio], ↑ V/Q heterogeneity in acute respiratory distress syndrome (ARDS) and pneumonia (3), or attenuation of the normal hypoxic pulmonary vasoconstriction due to oxygen supplementation)—will shift the passive system to the right, resulting in a higher PaCO2 (Figure 1D). Acute pulmonary embolism would th
©《急诊与重症医学杂志》。版权所有。住院患者PaCO2的变化是常见的,并与发病率和死亡率的增加相关。尽管许多临床医生都知道PaCO2体内平衡的生理机制,但他们往往难以理解不同的代偿机制如何相互作用,以及为什么这种相互作用并不总是成功地实现正常碳酸血症。对PaCO2水平的错误解读,即使在正常范围内,也会对自主呼吸患者产生危险的后果(1)。在本文中,我们简要描述了如何直观地解释不同病理生理机制在确定自主呼吸或机械通气患者PaCO2水平时的相互作用。在自主呼吸患者中,PaCO2有两个决定因素。来自大脑的呼吸驱动是一个活跃的系统(PaCO2每增加3mmhg可将分钟通气量增加到10l /min,除非PaCO2非常高)(1);而肺泡二氧化碳张力(或简单地称为PaCO2)、二氧化碳产量(平均成人VCO2 ~200 mL/min,剧烈运动可增加10倍)和肺泡分钟通气量之间的数学关系代表了一个被动系统(图1A)(2)。肺泡分钟通气量等于分钟通气量减去由于生理死空间(解剖和肺泡死空间的总和)而浪费的通气量。主动和被动系统之间的交互定义了PaCO2。由于缺氧或代谢性酸中毒导致的呼吸驱动增加会增加主动呼吸驱动系统的“斜率”,导致分钟通气量增加,从而降低PaCO2。因此,在存在明显代谢性酸中毒的情况下,PaCO2在正常范围内实际上是异常的,这可能意味着同时存在呼吸驱动抑制(1)。阿片类药物和镇静剂导致的呼吸抑制会使主动呼吸驱动系统向右移动(图1B),导致分钟通气量降低,PaCO2升高。VCO2的增加会使被动系统向上移动,导致PaCO2升高,直到主动呼吸驱动系统向上移动斜率使PaCO2正常化(图1C)。肺泡死亡空间的增加——可能是由于肺气肿、肺血流量减少而没有相应的通气减少或对灌注不良的肺泡过度通气而引起的[即,↑总通气与灌注(V/Q)比]、急性呼吸窘迫综合征(ARDS)和肺炎的↑V/Q异质性(3),或因补充氧气而导致的正常缺氧肺血管收缩的衰减)——将使被动系统向右移动。导致PaCO2升高(图1D)。急性肺栓塞理论上会增加肺泡死亡空间;然而,通常没有观察到PaCO2升高。这是因为任何PaCO2的升高和动脉血氧压(PaO2)的降低都会被髓动脉和颈动脉感知到
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引用次数: 0
Cerebral air embolism after flushing a radial arterial line: a case report 桡动脉冲洗后的脑空气栓塞1例
Pub Date : 2021-04-16 DOI: 10.21037/JECCM-20-174
M. Zink, Gilbert Hainzl, A. Maier, V. Stadlbauer
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引用次数: 0
Predicting open wound mortality in the ICU using machine learning. 利用机器学习预测ICU开放性伤口死亡率。
Pub Date : 2021-04-01 Epub Date: 2021-04-25 DOI: 10.21037/jeccm-20-154
Ronald K Akiki, Rajsavi S Anand, Mimi Borrelli, Indra Neil Sarkar, Paul Y Liu, Elizabeth S Chen

Background: Open wounds have a significant impact on the health of patients causing pain, loss of function, and death. Labeled as a comorbid condition, open wounds represent a "silent epidemic" that affect a large portion of the US population. Due to their burden of care, open wound patients face an increased risk of ICU stay and mortality. There is a dearth of studies that investigate mortality among wound patients in the ICU. We sought to develop a model that predicts the risk of mortality among wound patients in the ICU.

Methods: Random forest and binomial logistic regression models were developed to predict the risk of mortality among open wound patients in the Medical Information Mart for Intensive Care III (MIMIC-III) database. MIMIC-III includes de-identified data for patients who stayed in critical care units of the Beth Israel Deaconess Medical Center between 2001 and 2012. Six variables were used to develop the model (wound location, gender, age, admission type, minimum platelet count and hyperphosphatemia). The Charlson Comorbidity Index (CCI) and Elixhauser Comorbidity Index were used to assess model strength.

Results: A total of 3,937 patients were included with a mean age of 76.57. Of those, 3,372 (85%) survived and 565 (15%) died during their ICU stay. The random forest model achieved an area under the curve (AUC) of 0.924. The CCI and Elixhauser models resulted in AUC of 0.528 and 0.565, respectively.

Conclusions: Machine learning models may allow clinicians to provide better care and management to open wound patients in the ICU.

背景:开放性伤口对患者的健康有重大影响,可引起疼痛、功能丧失和死亡。开放性伤口被认为是一种合并症,它代表了一种“无声的流行病”,影响了很大一部分美国人口。由于他们的护理负担,开放性伤口患者面临ICU住院和死亡的风险增加。目前缺乏关于ICU伤口患者死亡率的研究。我们试图建立一个模型来预测ICU伤口患者的死亡风险。方法:建立随机森林和二项logistic回归模型,预测重症监护医学信息市场III (MIMIC-III)数据库中开放性伤口患者的死亡风险。MIMIC-III包括2001年至2012年间住在贝斯以色列女执事医疗中心重症监护病房的患者的去识别数据。模型采用6个变量(伤口位置、性别、年龄、入院类型、最低血小板计数和高磷血症)。采用Charlson共病指数(CCI)和Elixhauser共病指数评估模型强度。结果:共纳入3937例患者,平均年龄76.57岁。其中,3372例(85%)存活,565例(15%)在ICU期间死亡。随机森林模型的曲线下面积(AUC)为0.924。CCI和Elixhauser模型的AUC分别为0.528和0.565。结论:机器学习模型可以让临床医生为ICU的开放性伤口患者提供更好的护理和管理。
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引用次数: 2
Subcutaneous and mediastinal emphysema, uncommon complications of COVID-19 ARDS: a case series 皮下和纵隔气肿,新冠肺炎ARDS的罕见并发症:病例系列
Pub Date : 2021-03-10 DOI: 10.21037/JECCM-20-149
P. Clark, S. Yohannes, A. Pratt
Coronavirus disease 2019 (COVID-19) adult respiratory distress syndrome (C-ARDS) has led to ventilator related complications such as ventilator associated events (VAE), venous thromboembolic events (VTE), barotrauma, and ultimately profound diffuse pulmonary fibrosis. Barotrauma is one such complication, with reports of spontaneous pneumothorax (PTX) and pneumomediastinum. We present a case series of four patients with severe C-ARDS, complicated by subcutaneous emphysema and mediastinal emphysema with and without pneumothroracies, which required supportive care, except one patient with PTX. Of the four patients only one patient was discharged alive. C-ARDS can induce lung injury, resulting in subcutaneous and mediastinal emphysema, which may not represent a PTX as etiology. The exact mechanism of subcutaneous emphysema and mediastinal emphysema without pneumothoracies in the setting of severe C-ARDS has not been clearly elucidated. Two plausible mechanisms may be related to the “Macklin effect” vs. type I and II pneumocyte breakdown when infected by COVID-19. Strategies used to minimize worsening of subcutaneous and mediastinal emphysema with and without pneumothoracies, may be to minimize positive end-expiratory pressure (PEEP), continue to maintain a lung protective strategy (LPS), while utilizing a higher fraction of inspired oxygen (FiO2) concentration. In the majority of cases, supportive care is usually required, unless PTX presents or tension pneumomediastinum develops, at which time treatment with a thoracostomy tube placement may be necessary or cardiothoracic surgery consultation may be warranted, to perform “gills” procedure. © Journal of Emergency and Critical Care Medicine. All rights reserved.
2019冠状病毒病(新冠肺炎)成人呼吸窘迫综合征(C-ARDS)已导致呼吸机相关并发症,如呼吸机相关事件(VAE)、静脉血栓栓塞事件(VTE)、气压性创伤,并最终导致严重的弥漫性肺纤维化。气压创伤就是这样一种并发症,有自发性肺气肿(PTX)和纵隔气肿的报道。我们报告了一个由四名严重C-ARDS患者组成的病例系列,他们并发皮下气肿和纵隔气肿,伴有或不伴有气肿,需要支持性护理,但一名PTX患者除外。在四名患者中,只有一名患者活着出院。C-ARDS可引起肺损伤,导致皮下和纵隔气肿,这可能不代表PTX的病因。皮下气肿和纵隔气肿在严重C-ARDS中的确切机制尚未明确阐明。两种可能的机制可能与新冠肺炎感染时I型和II型肺细胞破裂的“麦克林效应”有关。用于最小化皮下和纵隔气肿恶化的策略,包括最小化呼气末正压(PEEP),继续维持肺部保护策略(LPS),同时利用更高的吸入氧气(FiO2)浓度。在大多数情况下,通常需要支持性护理,除非PTX出现或纵隔气胀,此时可能需要放置胸腔造口管进行治疗,或者可能需要进行心胸外科会诊,以进行“鳃”手术。©《急诊与危重症医学杂志》。保留所有权利。
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引用次数: 1
An unusual cause of a toddler with a big belly, abdominal lymphatic malformation case report 一个不寻常的原因,幼儿与大肚子,腹部淋巴畸形的病例报告
Pub Date : 2021-03-05 DOI: 10.21037/JECCM-20-146
Lauren C. Riney
: Abdominal pain is one of the most common complaints seen in the pediatric emergency department (PED). Because of the broad range of potential diagnoses, it can pose challenges in the diagnostic evaluation and treatment in the young child. A 3-year-old previously healthy girl presented to our PED with abdominal pain, abdominal distention, poor appetite, and recent weight gain. Physical examination was notable for a significantly distended taut abdomen in an otherwise well appearing child with normal vital signs. Initial evaluation yielded anemia, elevated inflammatory markers, and an abdominal ultrasound (US) showing a large amount of complex intra-abdominal ascites without definite intra-peritoneal mass. Pediatric surgery, pediatric gastroenterology, and pediatric oncology were consulted. A magnetic resonance imaging (MRI) of the abdomen was performed and revealed a large amount of intraperitoneal fluid with a component of internal complexity and no suspicious enhancement to suggest overt malignant process. She was ultimately diagnosed with a large congenital omental cyst that required resection and omentectomy. Pathology was consistent with a macrocystic lymphatic malformation. Lymphatic malformations are uncommon pediatric lesions, accounting for only 5% of benign tumors in childhood. Common locations include the neck, axillae, and rarely involve the gastrointestinal tract. Clinical presentation varies depending on the size and location of the tumor. Many present later in life due to their diagnostic challenges.
腹痛是儿科急诊科(PED)最常见的主诉之一。由于潜在的诊断范围广泛,对幼儿的诊断、评估和治疗提出了挑战。一名3岁的健康女孩以腹痛、腹胀、食欲不振和近期体重增加就诊于我们的PED。体格检查是一个显著膨胀紧绷的腹部在其他方面表现良好的孩子正常的生命体征。初步评估发现贫血,炎症标志物升高,腹部超声(US)显示大量复杂的腹水,但腹膜内没有明确的肿块。我们咨询了儿科外科、儿科胃肠病学和儿科肿瘤学。腹部磁共振成像(MRI)显示大量腹腔内液体,内部复杂成分,未见可疑强化提示明显的恶性过程。她最终被诊断为先天性大网膜囊肿,需要切除和网膜切除术。病理表现为大囊性淋巴畸形。淋巴畸形是一种罕见的儿童病变,仅占儿童良性肿瘤的5%。常见部位包括颈部、腋窝,很少累及胃肠道。临床表现因肿瘤的大小和位置而异。由于诊断困难,许多人在生命后期出现。
{"title":"An unusual cause of a toddler with a big belly, abdominal lymphatic malformation case report","authors":"Lauren C. Riney","doi":"10.21037/JECCM-20-146","DOIUrl":"https://doi.org/10.21037/JECCM-20-146","url":null,"abstract":": Abdominal pain is one of the most common complaints seen in the pediatric emergency department (PED). Because of the broad range of potential diagnoses, it can pose challenges in the diagnostic evaluation and treatment in the young child. A 3-year-old previously healthy girl presented to our PED with abdominal pain, abdominal distention, poor appetite, and recent weight gain. Physical examination was notable for a significantly distended taut abdomen in an otherwise well appearing child with normal vital signs. Initial evaluation yielded anemia, elevated inflammatory markers, and an abdominal ultrasound (US) showing a large amount of complex intra-abdominal ascites without definite intra-peritoneal mass. Pediatric surgery, pediatric gastroenterology, and pediatric oncology were consulted. A magnetic resonance imaging (MRI) of the abdomen was performed and revealed a large amount of intraperitoneal fluid with a component of internal complexity and no suspicious enhancement to suggest overt malignant process. She was ultimately diagnosed with a large congenital omental cyst that required resection and omentectomy. Pathology was consistent with a macrocystic lymphatic malformation. Lymphatic malformations are uncommon pediatric lesions, accounting for only 5% of benign tumors in childhood. Common locations include the neck, axillae, and rarely involve the gastrointestinal tract. Clinical presentation varies depending on the size and location of the tumor. Many present later in life due to their diagnostic challenges.","PeriodicalId":73727,"journal":{"name":"Journal of emergency and critical care medicine (Hong Kong, China)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42903257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Progression of aortic intramural hematoma with associated penetrating aortic ulcers with medical management requiring surgical management case report 主动脉壁内血肿进展伴穿透性主动脉溃疡需手术治疗的病例报告
Pub Date : 2021-03-05 DOI: 10.21037/JECCM-20-153
Koral Shah, H. Ahmad, Jonathan E. Wilson, Mukesh Goyal, S. Dubin
Penetrating ulcers of the aorta, aortic dissections, and intramural hematomas (IMH) all fall under acute aortic syndromes (AAS) and have important similarities and differences. We present a case of an asymptomatic patient with uncontrolled hypertension who was found to have a unique combination of penetrating aortic ulcers (PAUs) with an associated IMH. Furthermore, the patient had PAUs located in the aortic arch, which is an uncommon since the majority are located in the descending thoracic aorta. His PAUs and IMH progressed despite medical management and subsequently required thoracic endovascular aortic repair (TEVAR). The treatment of IMHs and PAUs is less well known compared to the classic aortic dissection. Often, they may not be treated as an AAS or may be treated as an aortic dissection. This case report addresses this challenge clinicians face with unclear delineation of treatment between different AAS. This case demonstrates how a type B IMH, when associated with penetrating ulcers, may follow a more malignant course, and should be considered for early surgical intervention. This case illustrates the importance of understanding the distinction between the AAS and how treatment differs based on Stanford classification and risk factors of progression.
主动脉穿透性溃疡、主动脉夹层和壁内血肿(IMH)都属于急性主动脉综合征(AAS),并具有重要的相似性和差异性。我们报告一例无症状的高血压患者,他被发现有一个独特的穿透性主动脉溃疡(PAUs)与相关的IMH的组合。此外,患者的PAUs位于主动脉弓,这是不常见的,因为大多数位于胸降主动脉。他的PAUs和IMH进展,尽管医疗管理,随后需要胸腔血管内主动脉修复(TEVAR)。与典型的主动脉夹层相比,IMHs和PAUs的治疗方法鲜为人知。通常,它们可能不会被当作AAS或主动脉夹层来治疗。本病例报告解决了临床医生面临的这一挑战,即不同AAS之间的治疗描述不明确。本病例表明,当B型IMH伴有穿透性溃疡时,可能会发生更恶性的过程,应考虑早期手术干预。该病例说明了理解AAS之间的区别以及基于斯坦福分类和进展危险因素的治疗差异的重要性。
{"title":"Progression of aortic intramural hematoma with associated penetrating aortic ulcers with medical management requiring surgical management case report","authors":"Koral Shah, H. Ahmad, Jonathan E. Wilson, Mukesh Goyal, S. Dubin","doi":"10.21037/JECCM-20-153","DOIUrl":"https://doi.org/10.21037/JECCM-20-153","url":null,"abstract":"Penetrating ulcers of the aorta, aortic dissections, and intramural hematomas (IMH) all fall under acute aortic syndromes (AAS) and have important similarities and differences. We present a case of an asymptomatic patient with uncontrolled hypertension who was found to have a unique combination of penetrating aortic ulcers (PAUs) with an associated IMH. Furthermore, the patient had PAUs located in the aortic arch, which is an uncommon since the majority are located in the descending thoracic aorta. His PAUs and IMH progressed despite medical management and subsequently required thoracic endovascular aortic repair (TEVAR). The treatment of IMHs and PAUs is less well known compared to the classic aortic dissection. Often, they may not be treated as an AAS or may be treated as an aortic dissection. This case report addresses this challenge clinicians face with unclear delineation of treatment between different AAS. This case demonstrates how a type B IMH, when associated with penetrating ulcers, may follow a more malignant course, and should be considered for early surgical intervention. This case illustrates the importance of understanding the distinction between the AAS and how treatment differs based on Stanford classification and risk factors of progression.","PeriodicalId":73727,"journal":{"name":"Journal of emergency and critical care medicine (Hong Kong, China)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42222191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Severity of illness scores at presentation predict ICU admission and mortality in COVID-19. 入院时疾病严重程度评分可预测COVID-19患者的ICU入院和死亡率。
Pub Date : 2021-01-01 Epub Date: 2021-01-25 DOI: 10.21037/jeccm-20-92
Erin M Wilfong, Christine M Lovly, Erin A Gillaspie, Li-Ching Huang, Yu Shyr, Jonathan D Casey, Brian I Rini, Matthew W Semler
Background: The COVID-19 pandemic has overwhelmed hospital systems in multiple countries and necessitated caring for patients in atypical healthcare settings. The goal of this study was to ascertain if the conventional critical care severity scores qSOFA, SOFA, APACHE-II, and SAPS-II could predict which patients admitted to the hospital from an emergency department would eventually require intensive care. Methods: This single-center, retrospective cohort study enrolled patients admitted to Vanderbilt University Hospital from the emergency room with symptomatic, confirmed COVID-19 infection between March 8, 2020 through May 15, 2020. Clinical phenotyping was performed by chart abstraction, and the correlation of the qSOFA, SOFA, APACHE-II, and SAPS-II scores for the primary endpoint of ICU admission and secondary endpoint of in-hospital mortality was evaluated. Results: During the study period, 128 patients were admitted to Vanderbilt University Hospital from the emergency room with COVID-19. Of these, 39 patients eventually required intensive care; the remaining 89 were discharged from the medical ward. All severity of illness scores demonstrated at least moderate ability to identify patients who would die or require ICU admission. Of the three severity of illness scores assessed, the APACHE-II score performed best with an AUC of 0.851 (95% CI: 0.786 to 0.917) for identifying patient that would require ICU admission. No patient with an APACHE-II score at the time of presentation less than 8 or qSOFA of 0 required intensive care unit (ICU) admission. All patients with an APACHE-II score less than 10 or qSOFA score of 0 survived to hospital discharge. Conclusions: The APACHE-II score accurately predicts the eventual need for ICU admission. This may allow for risk-stratification of patients safe to treat in alternative health care settings and prognostic enrichment to accelerate clinical trials of COVID-19 therapies.
背景:COVID-19大流行已使多个国家的医院系统不堪重负,需要在非典型医疗环境中对患者进行护理。本研究的目的是确定传统重症监护严重程度评分qSOFA、SOFA、APACHE-II和sap - ii是否可以预测哪些从急诊科入院的患者最终需要重症监护。方法:这项单中心、回顾性队列研究纳入了2020年3月8日至2020年5月15日期间从范德比尔特大学医院急诊室入院的有症状的确诊COVID-19感染患者。通过图表抽象进行临床表型分析,并评估qSOFA、SOFA、APACHE-II和sap - ii评分与ICU入院主要终点和院内死亡率次要终点的相关性。结果:在研究期间,有128名COVID-19患者从范德比尔特大学医院急诊室入院。其中,39名患者最终需要重症监护;其余89人已出院。所有疾病严重程度评分均显示出至少中等程度的识别将死亡或需要ICU住院的患者的能力。在评估的三种疾病严重程度评分中,APACHE-II评分在识别需要ICU住院的患者方面表现最佳,AUC为0.851 (95% CI: 0.786至0.917)。就诊时APACHE-II评分低于8分或qSOFA低于0分的患者无需入住重症监护病房(ICU)。所有APACHE-II评分小于10或qSOFA评分为0的患者均存活至出院。结论:APACHE-II评分能准确预测最终是否需要进入ICU。这可能会对在替代医疗机构中安全治疗的患者进行风险分层,并丰富预后,以加速COVID-19疗法的临床试验。
{"title":"Severity of illness scores at presentation predict ICU admission and mortality in COVID-19.","authors":"Erin M Wilfong,&nbsp;Christine M Lovly,&nbsp;Erin A Gillaspie,&nbsp;Li-Ching Huang,&nbsp;Yu Shyr,&nbsp;Jonathan D Casey,&nbsp;Brian I Rini,&nbsp;Matthew W Semler","doi":"10.21037/jeccm-20-92","DOIUrl":"https://doi.org/10.21037/jeccm-20-92","url":null,"abstract":"Background: The COVID-19 pandemic has overwhelmed hospital systems in multiple countries and necessitated caring for patients in atypical healthcare settings. The goal of this study was to ascertain if the conventional critical care severity scores qSOFA, SOFA, APACHE-II, and SAPS-II could predict which patients admitted to the hospital from an emergency department would eventually require intensive care. Methods: This single-center, retrospective cohort study enrolled patients admitted to Vanderbilt University Hospital from the emergency room with symptomatic, confirmed COVID-19 infection between March 8, 2020 through May 15, 2020. Clinical phenotyping was performed by chart abstraction, and the correlation of the qSOFA, SOFA, APACHE-II, and SAPS-II scores for the primary endpoint of ICU admission and secondary endpoint of in-hospital mortality was evaluated. Results: During the study period, 128 patients were admitted to Vanderbilt University Hospital from the emergency room with COVID-19. Of these, 39 patients eventually required intensive care; the remaining 89 were discharged from the medical ward. All severity of illness scores demonstrated at least moderate ability to identify patients who would die or require ICU admission. Of the three severity of illness scores assessed, the APACHE-II score performed best with an AUC of 0.851 (95% CI: 0.786 to 0.917) for identifying patient that would require ICU admission. No patient with an APACHE-II score at the time of presentation less than 8 or qSOFA of 0 required intensive care unit (ICU) admission. All patients with an APACHE-II score less than 10 or qSOFA score of 0 survived to hospital discharge. Conclusions: The APACHE-II score accurately predicts the eventual need for ICU admission. This may allow for risk-stratification of patients safe to treat in alternative health care settings and prognostic enrichment to accelerate clinical trials of COVID-19 therapies.","PeriodicalId":73727,"journal":{"name":"Journal of emergency and critical care medicine (Hong Kong, China)","volume":"5 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/37/3f/nihms-1697398.PMC8232354.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39115373","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: 21
Lemierre’s syndrome: a role for thrombectomy, a case report Lemierre综合征:取栓术的作用1例
Pub Date : 2021-01-01 DOI: 10.21037/jeccm-21-38
Jevaughn S Davis, Omowunmi Adedeji, K. Hawkins, Riad Akkari, M. Seneff
: A 55-year-old woman with no significant past medical history presented with concerns of a retropharyngeal abscess (RPA) associated with bilateral internal jugular vein (IJV) thromboses. Computed tomography (CT) demonstrated the RPA, in addition to bilateral IJV thrombosis and ground-glass opacities in the lungs suggestive of Lemierre syndrome. This rare syndrome begins as an oropharyngeal infection and frequently involves inflammation within the vein wall, infected thrombus, surrounding soft tissue inflammation, persistent bacteremia, and septic emboli. Diagnosis is purely clinical; prompt and timely identification and treatment of Lemierre Syndrome decreases mortality by a factor of 4. Standard treatment is tailored antibiotic administration, though other therapies such as anticoagulation and interventional procedures such as thrombectomy remain controversial and debated. The available literature does not elucidate a role for thrombectomy. We present a patient who did not improve with antibiotics and systemic anticoagulation and it was not until IJV thrombectomy that the patient demonstrated clinical improvement. From our literature review, there are no current case reports published where thrombectomy was used in the treatment of Lemierre. However, there are a few published articles that suggest some benefit to patients with treatment resistant Lemierre, given extrapolated data from thrombectomy used in the treatment of septic thrombophlebitis of the extremities. With the advancement of medical technology, new interventional methodologies should be adopted to treat this disease.
一名55岁女性,既往无明显病史,表现为咽后脓肿(RPA)伴双侧颈内静脉(IJV)血栓形成。计算机断层扫描(CT)显示RPA,双侧IJV血栓形成和肺部磨玻璃混浊提示Lemierre综合征。这种罕见的综合征以口咽感染开始,通常包括静脉壁炎症、感染血栓、周围软组织炎症、持续性菌血症和脓毒性栓塞。诊断纯粹是临床的;及时发现和治疗勒米尔综合征可使死亡率降低1 / 4。标准治疗是量身定制的抗生素治疗,尽管其他治疗方法,如抗凝和血栓切除术等介入性手术仍存在争议和争论。现有的文献没有阐明血栓切除术的作用。我们报告了一位患者,抗生素和全身抗凝治疗没有改善,直到IJV取栓,患者才表现出临床改善。从我们的文献综述来看,目前还没有发表血栓切除术用于治疗Lemierre的病例报告。然而,有一些已发表的文章表明,从用于治疗感染性血栓性下肢静脉炎的取栓术中推断出的数据来看,对耐药Lemierre患者有一些益处。随着医学技术的进步,该病的介入治疗应采用新的方法。
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引用次数: 0
Atypical clinical presentation of inflammatory marker negative septic arthritis, osteomyelitis, and bacteremia following a single dose of tocilizumab in the treatment of COVID-19: a case report 单剂量托齐珠单抗治疗新冠肺炎后炎症标志物阴性感染性关节炎、骨髓炎和菌血症的非典型临床表现:病例报告
Pub Date : 2021-01-01 DOI: 10.21037/jeccm-21-121
J. Reyes, E. Ogele, W. D. Clapp
Background: Tocilizumab is an immunomodulating agent that inhibits the inflammatory cascade via interleukin-6 (IL-6) signaling. A recent meta-Analysis written by the World Health Organization, and other large, randomized trials, have found that the medication results in reduced all-cause mortality in the treatment of severe coronavirus disease 2019 (COVID-19) illness, likely by targeting aberrant inflammatory pathways. With the medication now recommended by infectious diseases societies in the treatment of COVID-19, many providers will begin using this medication in critically ill patients, and for some it will be their first exposure to the medication and its side effects. Although atypical secondary infections have been observed following multiple administrations of tocilizumab, our case is significant as it displays an atypical presentation of invasive bacterial illness and sepsis following a single dose. Case Description: Our case consists of a 52-year-old man with severe COVID-19 pneumonitis who was given tocilizumab due to worsening respiratory status and elevating inflammatory markers, who later developed severe, invasive bacterial disease with minimal objective findings suggesting severe illness. Six days following tocilizumab administration, the patient was diagnosed with Staphylococcus aureus (S. aureus) bacteremia, septic arthritis, and osteomyelitis, at which time inflammatory markers were within normal limits, he was no longer febrile or tachycardic, and his only objective findings suggesting illness were a tender shoulder with an isolated, neutrophilic predominant leukocytosis. This complication resulted in a washout of a septic joint, a 6-week course of intravenous antibiotics, and a 59-day hospitalization. The patient was discharged without new chronic medical issues, including a lack of new end-organ dysfunction or chronic pain of the joint affected by septic arthritis. Conclusions: This case demonstrates an atypical presentation of gram-positive systemic infection, displaying the complications which may develop with the use of immunomodulators. Because of the potential for severe infection with atypical, insidious presentation, a high index of suspicion should be maintained in all patients receiving these agents. © Journal of Emergency and Critical Care Medicine.
背景:托奇利珠单抗是一种通过白细胞介素-6(IL-6)信号抑制炎症级联反应的免疫调节剂。世界卫生组织最近撰写的一项meta-Analysis和其他大型随机试验发现,该药物可能通过靶向异常炎症途径,降低了2019年严重冠状病毒病(新冠肺炎)的全因死亡率。随着传染病学会现在推荐的治疗新冠肺炎的药物,许多提供者将开始在危重患者中使用这种药物,对一些人来说,这将是他们首次接触这种药物及其副作用。尽管在多次给药托西利珠单抗后观察到非典型继发感染,但我们的病例意义重大,因为它在单次给药后表现出侵袭性细菌性疾病和败血症的非典型表现。病例描述:我们的病例包括一名患有严重新冠肺炎肺炎的52岁男子,他因呼吸状况恶化和炎症标志物升高而服用tocilizumab,后来发展为严重的侵袭性细菌性疾病,客观结果很少,表明病情严重。托西利珠单抗给药后6天,患者被诊断为金黄色葡萄球菌菌血症、脓毒性关节炎和骨髓炎,此时炎症标志物在正常范围内,他不再发烧或心动过速,他唯一的客观发现表明疾病是肩部疼痛,伴有孤立的中性粒细胞为主的白细胞增多。该并发症导致感染性关节被冲洗,静脉注射抗生素6周,住院59天。患者出院时没有出现新的慢性医疗问题,包括缺乏新的末端器官功能障碍或感染性关节炎引起的关节慢性疼痛。结论:该病例表现为革兰氏阳性全身感染的非典型表现,显示出使用免疫调节剂可能产生的并发症。由于可能出现非典型、隐性的严重感染,所有接受这些药物治疗的患者都应保持高度怀疑。©《急诊与危重症医学杂志》。
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引用次数: 0
Obstructive shock presenting like STEMI: case report 梗阻性休克表现为STEMI 1例
Pub Date : 2021-01-01 DOI: 10.21037/JECCM-20-139
Srikar Reddy, Xinyu von Buttlar, D. Casey
: Pulmonary emboli have varied clinical presentations and are largely determined by the size and position of these emboli. Symptoms include no symptoms at all, dyspnea, cough, or chest pain. Patients often also exhibit tachypnea and tachycardia. In more extreme cases, larger pulmonary emboli at the bifurcation of the pulmonary arteries called saddle emboli can lead to severe right heart failure and even death. Diagnosing emboli can be difficult because the constellation of symptoms discussed can also be attributed to other medical conditions like pneumothoraxes and pericarditis. For clinicians, it is paramount that prompt and accurate diagnosis of pulmonary emboli be done to facilitate expedient treatment for this condition. The Wells’ Criteria is a useful tool to stratify the risk that a patient has a pulmonary embolism. However, often patients can present with pulmonary emboli without the “typical” risk factors such as prolonged immobilization, surgery in the previous four weeks, hypercoagulable conditions, or asymmetric lower extremity swelling. We present a 66 years old African American male who arrived to the emergency department in shock and with initial electrocardiographic findings consistent with left main stenosis but catheterization findings consistent with negative coronary artery disease and was later found to have extensive bilateral pulmonary emboli.
肺栓塞的临床表现多种多样,主要取决于栓子的大小和位置。症状包括无症状、呼吸困难、咳嗽或胸痛。患者也常表现为呼吸急促和心动过速。在更极端的情况下,肺动脉分叉处较大的肺栓塞称为鞍状栓塞,可导致严重的右心衰甚至死亡。诊断栓子可能很困难,因为所讨论的一系列症状也可归因于其他疾病,如气胸和心包炎。对于临床医生来说,及时准确地诊断肺栓塞是至关重要的,以促进对这种情况的权宜治疗。威尔斯标准是一种有用的工具,可以对患者肺栓塞的风险进行分层。然而,通常出现肺栓塞的患者没有“典型”的危险因素,如长时间固定、前四周手术、高凝状态或不对称下肢肿胀。我们报告了一位66岁的非裔美国男性,他在休克时被送到急诊室,最初的心电图结果与左主干狭窄一致,但导管检查结果与冠状动脉疾病阴性一致,后来发现有广泛的双侧肺栓塞。
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Journal of emergency and critical care medicine (Hong Kong, China)
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