Challenges to Contemporary Wide Complex Tachycardia Criteria: A Single-center Case Series of 1:1 Atrial Flutter.

Atrial flutter with 1:1 atrioventricular conduction is a rare cause of wide complex tachycardia, which presents a diagnostic challenge. This report describes a series of eight cases of 1:1 atrial flutter compiled during 2018-2022. The cases in this report include patients without class 1 anti-arrhythmic use or pre-excitation.

All the king's men (and women): Fluoro-less leadless pacemaker implant in a severely obese patient.

Introduction: Severe obesity presents significant challenges in imaging and delivery of therapy, including pacemaker implant.

Methods And Result: We present our experience implanting a leadless pacemaker (LP) in a severely obese man presenting with heart block. We describe our multidisciplinary approach using right internal jugular venous access and transesophageal imaging in lieu of fluoroscopy which failed to provide workable images in this instance.

Early Detection of In-Patient Deterioration: One Prediction Model Does Not Fit All.

Objectives: Early detection of subacute potentially catastrophic illnesses using available data is a clinical imperative, and scores that report risk of imminent events in real time abound. Patients deteriorate for a variety of reasons, and it is unlikely that a single predictor such as an abnormal National Early Warning Score will detect all of them equally well. The objective of this study was to test the idea that the diversity of reasons for clinical deterioration leading to ICU transfer mandates multiple targeted predictive models.

Daytime QT by Routine 12-Lead ECG Is Prolonged in Patients with Severe Obstructive Sleep Apnea.

Background: Obstructive sleep apnea (OSA) has been linked to sudden cardiac death (SCD). Prolonged QT is a recognized electrocardiographic (ECG) marker of abnormal ventricular repolarization linked to increased risk of SCD. We hypothesized that individuals with OSA have more pronounced abnormality in daytime QT interval.

Sleep Apnea and Sudden Cardiac Death.

Sleep plays an integral role in maintaining health and quality of life. Obstructive sleep apnea (OSA) is a prevalent sleep disorder recognized as a risk factor for cardiovascular disease (CVD) and arrhythmias. Sudden cardiac death (SCD) is a common and devastating event.

Atrial Fibrillation and Objective Sleep Quality by Slow Wave Sleep.

Background: Self-reported poor sleep quality has been suggested in patients with AF. Slow wave sleep (SWS) is considered the most restorative sleep stage and represents an important objective measure of sleep quality. The aim of this study was to compare quantity of SWS between patients with and without AF.

Plasma Volume and Renal Function Predict Six-Month Survival after Hospitalization for Acute Decompensated Heart Failure.

Background: Plasma volume (PV) is contracted in stable patients with heart failure (HF) due to decongestion strategies. On the other hand, increased PV can adversely affect the trajectory of HF. We therefore examined the effects of increased percentage change in PV (%ΔPV), blood urea nitrogen (BUN), and %ΔPV stratified by BUN and glomerular filtration rate (GFR) on survival after discharge in patients hospitalized for acute decompensated HF (ADHF).

Outcomes of percutaneous coronary intervention in patients ≥ 75 years: one-center study in a Chinese patient group.

Objective: To investigate the clinical and perioperative characteristics of patients ≥ 75 who undergoing percutaneous coronary intervention (PCI) and to evaluate the risk factors related to short-term post-PCI mortality in this specific patients group.

Methods: 1,035 consecutive subjects who underwent PCI from December 2011 to November 2013 were divided into four categories: (1) patients with stable angina (SA) ≥ 75 years (n = 58); (2) patients with SA < 75 years (n = 218); (3) patients with acute coronary syndrome (ACS) ≥ 75 years (n = 155); (4) patients with ACS < 75 years (n = 604). A multivariable logistic regression analysis was conducted to detect risk factors of six-month mortality in patients ≥ 75 years who had undergone PCI.