ECG Challenge: New Beats With a Pacemaker - Medscape
Jul 22, 2024 · After receiving a pacemaker, this heart failure patient has changes to his ECG. Are these new rhythms normal?
ECG Findings Associated With Cocaine Use in Humans - Page 5
The few human studies available (including studies during abstinence from cocaine) indicate that the PR interval remains either unaffected or slightly decreases in the setting of cocaine use, …
Methadone-associated Q-T Interval Prolongation and Torsades
Introduction Q-T interval prolongation occurs when there is an interruption in the normal balance and flow of ions in the myocardium, increasing the time it takes for repolarization to occur. [1]
The Telltale Tall R Waves - Page 2 - Medscape
Oct 2, 2018 · The diagnosis is sinus tachycardia, short PR interval (enhanced AV conduction), and Duchenne muscular dystrophy. The rhythm is regular at a rate of 100 beats/min. A P wave …
ECG Challenge: What Is This Irregularly Irregular Rhythm?
Mar 24, 2016 · The QT/QTc intervals are normal (440/440 msec). The coarse undulations of the baseline (^) are the result of atrial activity. However, these waveforms vary in morphology, …
ECG Challenge: COPD Flare-Up and Irregular Heartbeat
Mar 19, 2024 · The following PR interval ( ) is longer (0.36 sec), and the PR intervals become progressively longer thereafter until there is a nonconducted P wave (↓) after complexes 5 and …
ECG Challenge: What's Causing This Long Pause? - Page 2
Aug 8, 2023 · A P wave occurs before each QRS complex (+) with a stable PR interval (0.14 sec). The P waves are positive in leads I, II, aVF, and V4-V6. This is considered a sinus bradycardia.
ECG Findings Associated With Cocaine Use in Humans - Page 4
The effects of cocaine on PR interval and QRS complex width described in clinical studies generally contrasted the case report literature in which 11 cases of PR interval prolongation …
ECG Findings Associated With Cocaine Use in Humans - Medscape
Given the high prevalence and incidence of cocaine use, coupled with its frequent implication in drug-related deaths [4] and autopsy studies suggestive of fatal cardiac arrhythmias in such …
ECG Challenge: 'I Feel Like I'm Going to Pass Out' - Page 2
Mar 1, 2019 · The QT/QTc intervals are normal (600/425 msec). There is a P wave before each QRS complex (+) with a stable but prolonged PR interval (0.24 sec).