Arrhythmias of the Left Atrial Appendage: Approaches to the Definitive Management of Atrial Tachycardia from the LAA Stump.

The left atrial appendage (LAA) is now recognized as a significant contributor to arrhythmia and thromboembolism in patients with a history of atrial fibrillation. Thoracoscopic exclusion of the LAA is made possible with the AtriClip device. In this report, we describe the case of a 65-year-old man with history of multiple left atrial ablation procedures and LAA clipping. He developed a microreentrant atrial tachycardia originating from the anterior base of the LAA stump, underwent complete isolation of the LAA, and had subsequent resolution of arrhythmogenic activity from the residual LAA stump.

New Perspectives on Long COVID Syndrome: The Development of Unusually Delayed and Recurring Pericarditis After a Primary SARS-CoV-2 Infection.

Since the start of the COVID-19 pandemic in early 2020, pericarditis has been identified as a COVID-19 complication. We report a case where the development of pericarditis was unusually delayed after the initial COVID infection. The reported onset of pericarditis and pericardial effusion is anywhere from a few days to a few months after infection. Our case surmises that a latent complication of COVID-19 can manifest more than one year after the initial infection. A forty-three-year-old male with a past medical history of SARS-CoV-2 infection in September 2020 presented in September 2021 and January 2022 with recurrent sharp chest pain and shortness of breath. During both admissions, he was diagnosed with acute pericarditis, and his workup was significant for elevations in D-dimer and CRP as well as pericardial and pleural effusions. Recurring pericardial symptoms and persistent elevations in D-dimer and CRP point toward a COVID etiology, particularly in the absence of other factors associated with pericarditis. Our case highlights the importance of recognizing this latent complication one year after the initial infection and how the symptoms can persist beyond the one-year period.

Frontliners on the Move: A Quantitative Analysis of the Prevalence of COVID-19 Reinfection Among Healthcare Workers.

This study was conducted to review relevant articles and demonstrate the prevalence of coronavirus disease 2019 (COVID-19) reinfection among healthcare workers (HCWs). A systemic search was conducted on PubMed and Medline from their inception to July 17, 2021. All statistical analyses were conducted using ReviewManager 5.4.1. Studies meeting the following inclusion criteria were selected: (a) articles having HCWs with COVID-19; (b) studies describing reinfection of COVID-19; and (c) articles having a defined number of patients and controls. Three studies were selected for meta-analysis. The Newcastle-Ottawa Scale (NOS) was used to assess the quality of the cohort studies. NOS scores of 1-5 were considered high risk for bias, scores of 6-7 were deemed moderate, and scores >7 were considered low risk for bias. A random-effect model was used when heterogeneity was seen to pool the studies, and the results were reported in inverse variance (IV) and corresponding 95% confidence interval (CI). Pooled prevalence of reinfection of COVID-19 in HCWs was 3% (OR: 0.03 [-0.04, 0.01]; p=0.44; I2 =4%). A non-significant prevalence was found among the healthcare professionals in terms of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reinfection in Europe. The preformed antibodies were protective against reinfection. However, the waning of antibodies with respect to time was evident, varying differently in different individuals, thereby resulting in reinfection.