Acta cardiologica最新文献

Objective: Atrial high-rate episodes (AHRE) are atrial tachyarrhythmia episodes detected by implanted cardiac devices, characterised by an atrial rate exceeding 180-190 beats per minute. Recent studies have linked AHRE to the development of atrial fibrillation (AF) and increased stroke risk, especially when episodes last longer than 5-6 min. This study aimed to evaluate the relationship between predictive factors and the occurrence of AHRE in heart failure with reduced ejection fraction (HFrEF) patients with cardiac implantable electronic devices (CIEDs).

Methods: This single-centre, retrospective study included a cohort of 155 consecutive HFrEF patients with CIEDs, but without a diagnosis of AF, enrolled between January 2023 and December 2023. Patients were stratified based on the presence of AHRE detected during device interrogation.

Results: The average age of the patients was 54 ± 14 years, and 83.2% of the study population were male. Patients with AHRE had a reduced left ventricular ejection fraction (LVEF) (p = 0.026) and an increased left atrial diameter (p < 0.001) compared to the group without AHRE. Patients with AHRE had elevated levels of creatinine, uric acid, and TSH compared to those without AHRE (p = 0.006, p = 0.021, p = 0.009, respectively). In the univariable logistic regression analysis, LVEF (HR = 0.690, 95% CI = 0.610-0.913, p = 0.013), left atrial diameter (HR = 8.215, 95% CI = 1.557-43.34, p < 0.001), creatinine (HR = 7.369, 95% CI = 1.749-31.05, p = 0.006), uric acid (HR = 1.073, 95% CI = 1.062-1.196, p = 0.020), total cholesterol (HR = 0.989, 95% CI = 0.979-0.999, p = 0.031), and C-reactive protein levels (HR = 1.146, 95% CI = 1.002-1.131, p = 0.047) were identified as independent predictors of AHRE. In multivariable logistic regression analysis, left ventricular ejection fraction (HR = 0.890, 95% CI = 0.795-0.998, p = 0.046), left atrial diameter (HR = 8.215, 95% CI = 1.557-43.34, p < 0.001), and uric acid concentration (HR = 1.650, 95% CI = 1.063-2.561, p = 0.025) were identified as predictors of atrial high-rate events.

Conclusion: LVEF, left atrial diameter, and uric acid level were found to be independent predictors of AHRE in patients with HFrEF. Identifying AHRE is crucial for risk stratification and guiding therapeutic decisions to improve patient outcome.

Background: Blood pressure (BP) control in haemodialysis (HD) patients is essential. Peri-dialytic BP levels do not accurately diagnose hypertension or predict the cardiovascular (CV) mortality.

Methods: In this study, we recruited 43 adult patients who had been on chronic HD for ≥3 months. Seven-day home BP monitoring (HBPM) (values of Day1 discarded) and 44-h interdialytic ambulatory BP monitoring (iABPM) were performed. Pre- and post-dialysis BP levels were measured during the 6 dialysis sessions prior to iABPM. A 6-year follow-up was carried out to assess all-cause and CV mortality.

Results: In patients considered as normotensive in pre-dialysis (n = 17), masked hypertension was found in 24% and 29% on the basis of iABPM and HBPM, respectively. Conversely, among hypertensive patients in pre-dialysis (n = 26), 'white-coat' hypertension was noted in 23% either by iABPM or HBPM. After a 6-year follow-up, 25 patients were deceased including 6 patients from CV causes. Day-time systolic BP measured by iABPM was associated with all-cause mortality in an adjusted model for age and gender (p = 0.045).

Conclusion: In chronic HD patients, 44-h iABPM and 6-day HBPM show a reliable concordance and help to re-classify ∼25% of cases miscategorised based on pre-dialysis measurements. Day-time systolic BP levels using iABPM were significantly associated with 6-year all-cause mortality.

Cor Triatriatum Dexter (CTD) is a rare congenital heart malformation, with an estimated incidence of 0.025%, characterised by a membrane dividing the right atrium (RA) into two chambers. A variant, incomplete CTD (CTDi), occurs when the right membrane extends partially into the interatrial septum without fully dividing the RA. CTDi can be associated with interatrial septal defects, found in 5% of patients with atrial septal defects or a patent foramen ovale (PFO). The study reports three adult patients (46-53 years old) with CTDi and a PFO, all presenting cryptogenic stroke and referred for PFO closure. Two cases underwent percutaneous closure with guidance from fluoroscopy and 2D/3D transesophageal echocardiography (TEE), and the last one utilised intracardiac echocardiography (ICE) for device placement. In patients referred for PFO closure, CTDi is common and can complicate visualisation, prolong procedure times, and reduce success rates. Difficulties in device deployment and the risk of residual shunt or embolisation have been reported. The authors highlight that using oversizing techniques, traction manoeuvres during device deployment, and preoperative planning with advanced imaging (such as ICE or 3D TEE) are crucial for successful percutaneous closure in cases with CTDi and PFO.