Atrial fibrillation (AF) is a common arrhythmia affecting 8–10% of the population older than 80 years old. The importance of early diagnosis of atrial fibrillation has been broadly recognized since arrhythmias significantly increase the risk of stroke, heart failure and tachycardia-induced cardiomyopathy with reduced cardiac function. However, the prevalence of atrial fibrillation is often underestimated due to the high frequency of clinically silent atrial fibrillation as well as paroxysmal atrial fibrillation, both of which are hard to catch by routine physical examination or 12-lead electrocardiogram (ECG). The development of wearable devices has provided a reliable way for healthcare providers to uncover undiagnosed atrial fibrillation in the population, especially those most at risk. Furthermore, with the advancement of artificial intelligence and machine learning, the technology is now able to utilize the database in assisting detection of arrhythmias from the data collected by the devices. In this review study, we compare the different wearable devices available on the market and review the current advancement in artificial intelligence in diagnosing atrial fibrillation. We believe that with the aid of the progressive development of technologies, the diagnosis of atrial fibrillation shall be made more effectively and accurately in the near future.

BackgroundPrevious studies have shown that patients with heart failure (HF) and cardiogenic shock (CS) have worse outcomes when admitted over the weekend. Since peripartum cardiomyopathy (PPCM) is a cause of CS and persisting HF, it is reasonable to extrapolate that admission over the weekend would also have deleterious effects on PPCM outcomes. However, the impact of weekend admission has not been specifically evaluated in patients with PPCM. MethodsWe analyzed the National Inpatient Sample (NIS) from 2016 to 2019. The International Classification of Diseases, tenth revision (ICD-10) codes were used to identify all admissions with a primary diagnosis of PPCM. The sample was divided into weekday and weekend groups. We performed a multivariate regression analysis to estimate the effect of weekend admission on specified outcomes. ResultsA total of 6,120 admissions met the selection criteria, and 25.3% (n=1,550) were admitted over the weekend. The mean age was 31.3 ± 6.4 years. There were no significant differences in baseline characteristics between study groups. After multivariate analysis, weekend admission for PPCM was not associated with in-hospital mortality, ventricular arrhythmias, sudden cardiac arrest, thromboembolic events, cardiovascular implantable electronic device placement, and mechanical circulatory support insertion. ConclusionIn conclusion, although HF and CS have been associated with worse outcomes when admitted over the weekend, we did not find weekend admission for PPCM to be independently associated with worse clinical outcomes after multivariate analysis. These findings could reflect improvement in the coordination of care over the weekend, improvement in physician handoff, and increased utilization of shock teams.

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BACKGROUND: Coronary artery calcium scoring (CAC) has garnered attention in the diagnostic approach to chest pain patients. However, little is known about the interplay between zero CAC, sex, race, ethnicity, and quantitative coronary plaque analysis. METHODS: We conducted a retrospective analysis from our computed tomography registry of patients with stable angina without prior myocardial infarction or revascularization undergoing coronary computed tomography angiography at Montefiore Healthcare System. Follow-up end points collected included invasive angiography, type-1 myocardial infarction, coronary revascularization, cardiovascular and all-cause death. RESULTS: A total of 2249 patients were included (66% female). The median follow-up was 5.5 years. The median age of those without CAC was 52 years (interquartile range, 44–59) and 60 years (interquartile range, 53–68) in those with CAC. Most patients were Hispanic (58%), and the rest were non-Hispanic Black (28%), non-Hispanic White (10%), and non-Hispanic Asian (5%). The majority had CAC=0 (55%). The negative predictive value of CAC=0 was 92.8%, 99.9%, and 99.9% for any plaque, obstructive coronary artery stenosis, and the composite outcome of all-cause death, myocardial infarction, or coronary revascularization, respectively. Among patients without CAC (n=1237), 89 patients (7%) had evidence of plaque on their coronary computed tomography angiography with a median low-attenuation noncalcified plaque burden of 4% (2–7). There were no significant differences in the negative predictive value for CAC=0 by sex, race, or ethnicity. Patients with ≥2 risk factors had higher odds of having plaque with zero CAC. CONCLUSIONS: In summary, no sex, race, or ethnicity differences were demonstrated in the negative predictive value of a zero CAC; however, patients with ≥2 risk factors had a higher prevalence of plaque. A small percentage (7%) of symptomatic patients undergoing coronary computed tomography angiography with zero CAC had noncalcified coronary plaque, with the implication that caution is needed for downscaling of preventive treatment in patients with zero CAC, chest pain, and multiple risk factors.

Polycystic ovary syndrome (PCOS) is a complex endocrinopathy affecting many women of reproductive age. Although its physiology is poorly understood, hyperandrogenemia and insulin resistance play a pivotal role in this complex syndrome, predisposing patients to a variety of cardiovascular and metabolic modalities. Current therapeutic options, including lifestyle modifications and medications, often do not satisfactorily improve clinical outcomes. SGLT2 inhibitors (SGLT‐2i) are a novel option which can potentially improve many hormonal and metabolic parameters for patients with PCOS, though the net cardiovascular effects remain under investigation in this population of patients with PCOS. Overall, the use of SGLT‐2i may be associated with beneficial somatometric, metabolic and hormonal outcomes of PCOS. To date, all available studies have recorded body mass index, waist and hip circumference, and fat mass reductions, improved insulin and androgen levels, and reduced blood pressure. The aim of the present review is to summarise PCOS‐related manifestations and mechanisms leading to cardiovascular disease, to explore the cardiometabolic impact of SGLT2i on PCOS, and to critically analyse the cardiometabolic and hormonal outcomes of the recent studies on the use of SGLT2i in women with PCOS.

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Introduction: Computed tomography with pulmonary angiography (CTPA) is the gold standard for diagnosis of pulmonary embolism (PE). A nearly five-fold increase in the use of CTPA was observed from 2004 to 2016 in the United States. Hypothesis: Suboptimal utilization of validated diagnostic predictive tools with D-dimer might have led to excessive use of CTPA in a large public hospital in Bronx, New York. Methods: We conducted a retrospective review of patients who underwent CTPA from January to October 2021. Two independent reviewers, blinded to each other and to the CTPA and D-dimer results, estimated the clinical probability for PE using the Well’s criteria, YEARS criteria, and the revised Geneva score. Patients were classified based on the presence or absence of PE in the CTPA. Chi-square and Fischer's exact test were used to compare discrete variables. Results: 504 patients were included in the analysis (median age: 56 years, female: 59.1%). The clinical probability for PE was considered to be low by both independent reviewers in 303 (60.2%), 250 (49.7%), and 108 (21.5%) patients based on Well’s criteria, YEARS criteria, and the revised Geneva score, respectively. D-dimer testing was conducted in less than half of patients with low clinical probability [Well’s:(43.2%), YEARS:(49.7%), Geneva:(46.3%)]. Based on Well’s criteria, of 69/131 patients (52.7%) with a D-dimer < 500 ng/ml, 3/69 (4.3%) were diagnosed with PE. As per YEARS criteria, of 51/100 patients (51%) with a D-dimer < 500 ng/ml, 3/51 (5.9%) were diagnosed with PE. Based on the revised Geneva score, of 26/50 (52%) patients with a D-dimer of < 500 ng/ml, 1/26 (3.8%) patient was diagnosed with PE. All PEs were subsegmental. Conclusion: Many patients underwent CTPA despite having a low probability of PE due to suboptimal utilization of validated diagnostic predictive tools with D-dimer. Using a D-dimer cut-off of <500 ng/ml in patients with a low probability of PE would have missed only a small number of subsegmental PE.

Introduction: Torsade de Pointe (TdP) is defined as a polymorphic VT (pVT) typically associated with QTc prolongation. However, not all pVT occur in the presence of QTc prolongation and respond to different forms of therapy. Hence defining their etiology is important. Case: A 48-yo Female with H/O resolved peripartum cardiomyopathy, hypertension & obesity presented to the hospital following a syncopal episode. Her BP was 207/125 mmHg, and ECG showed sinus rhythm with a QTc of 436. No history of heart disease or SCD in her family. Physical exam was unremarkable, labs showing K-3.2 without troponin elevation. On day 2, she developed a pVT requiring defibrillation and amiodarone. Telemetry revealed a PVC causing R on T phenomenon with a coupling interval of 260 msec prior to initiation of SVT with QTc 484 and K-2.8. On day 3, despite electrolyte correction, she had multiple non-sustained pVTs with QTc 482. Amiodarone was switched to lidocaine and QTc normalized to 447. TTE and LHC were unremarkable with a small LV aneurysm on cMRI. On day 4, the patient continued to have incessant runs of pulseless pVT requiring defibrillation and started on verapamil. A 12 lead ECG during VT demonstrated left bundle branch mimicry with a left axis consistent with a VT exit site along the RV moderator band. The patient underwent emergent ablation with targets along the right anterolateral papillary muscle. AICD was placed prior to discharge. Discussion: The critical timing of PVC falling on the peak of the preceding T wave differentiates ‘Short-coupled TdP’ from other malignant VTs with normal QTc. These PVCs typically originate from distal ramifications of Purkinje fibers in both ventricles. PVC morphology with LBBB pattern, left axis and late precordial R-S transition points to the moderator band as the source of idiopathic VT. Contrasting with typical TdP, medical management with Quinidine and Verapamil may be efficacious. Catheter ablation is curative in most cases.