PR Prolongation - Medscape
Jun 23, 2009 · Speaking with heartwire, Wang noted that prolongation of the PR interval, known as AVB when the interval exceeds 200 ms, is frequently encountered in clinical practice, but …
ECG Findings Associated With Cocaine Use in Humans - Page 4
A study investigating the effects of acute cocaine administration in 14 habitual users by Magnano et al. found a small but significant decrease in PR interval length within 2 min following ...
ECG Findings Associated With Cocaine Use in Humans - Page 5
Shortened PR interval, lengthened QRS with slurred upstroke of R waves (deep Q waves) in V2–V3 (WPW pattern) [101] Kalimullah et al. (2008) 19, F: Ingested: ≤1 h: 1° AVB, wide QRS, …
Variations on the Theme of the Wenckebach Phenomenon (I)
Sep 4, 2008 · The R-R interval is the same as the P-P interval plus whatever change there is in the PR interval. In typical AV Wenckebach phenomenon, the PR intervals increase with …
The Telltale Tall R Waves - Page 2 - Medscape
Oct 2, 2018 · The rhythm is regular at a rate of 100 beats/min. A P wave occurs before each QRS complex (+) with a stable but short PR interval (0.12 sec). The PR interval is shorter than what …
ECG Challenge: Hyperlipidemia and Irregular Pulse - Medscape
May 22, 2024 · All the PR intervals are the same (0.16 sec). The P waves are positive in leads I, II, aVF, and V4-V6. This is an underlying normal sinus rhythm at a rate of 75 beats/min.
ECG Challenge: What Is This Irregularly Irregular Rhythm?
Mar 24, 2016 · Sinus arrhythmia (one P wave morphology and stable PR interval) Multifocal atrial rhythm (wandering atrial pacemaker) with a rate < 100, ...
Advanced ICD Troubleshooting: Part I - Page 2 - Medscape
P-wave oversensing may occur if the distal coil of an integrated bipolar lead is close to the tricuspid valve, and the sensed PR interval exceeds the ventricular blanking period. It is rare in ...
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 ...
ECG Challenge: Irregular Pulse in a Hypertensive Patient - Medscape
Sep 27, 2024 · A P wave occurs before each QRS complex (+) with a stable PR interval (0.20 sec). The P waves are positive in leads I, II, aVF, and V4-V6. This is a normal sinus rhythm.