ECG Findings Associated With Cocaine Use in Humans - Page 4
ECG changes consistent with acute myocardial infarction (AMI) were defined as a ST-segment elevation greater than 0.1 mV at 80 ms from the J-point with or without associated T-wave …
ECG Challenge: High Blood Pressure and Asymptomatic
Sep 22, 2022 · The QT/QTc intervals are normal (400 msec/440 msec). A P wave (+) is present before each of these narrow QRS complexes with a stable PR interval (0.36 sec).
ECG Challenge: Her Annual Physical Is Normal, Except the ECG
Apr 1, 2019 · The QT/QTc intervals are prolonged (420/480 msec) but are normal when the prolonged QRS complex interval is considered (400/455 msec). Each QRS complex is …
Melatonin-Induced Bradycardia in a Young Man - Medscape
Feb 7, 2025 · An ECG was performed, demonstrating sinus bradycardia with a heart rate of 39 beats per minute, in conjunction with benign early repolarisation. The intervals and QRS …
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, …
Which Drug Is Causing This Woman's Syncope? - Medscape
May 16, 2017 · Her blood pressure while standing was 95/60 mm Hg, with a heart rate of 60 beats/min. An ECG showed bradycardia with normal intervals.
Top Updates in 2025 ACS Management Guidelines - Medscape
Jun 30, 2025 · Dr Amal Mattu breaks down the key updates — and lingering pitfalls — in the 2025 ACS guidelines that every acute care clinician should know.
ECG Challenge: Palpitations With Heavy Drinking - Page 2
Sep 21, 2023 · The QT/QTc intervals of these narrow QRS complexes are normal (380/400 msec). The QT/QTc intervals of the pre-excited complexes are the same (440/500 msec and …
ECG Challenge: What's Causing This Long Pause? - Page 2
Aug 8, 2023 · The axis is normal. There are prominent U waves in leads II, aVF and V4-V6 (^), probably the result of the bradycardia. The QT/QTc intervals are normal (480/430 msec).
ECG Challenge: C diff Infection With Irregular Pulse - Page 2
Nov 2, 2023 · The correct diagnosis is normal sinus rhythm, second degree atrioventricular (AV) block Mobitz type I (Wenckebach) (Figure 2). The rhythm is irregular but many of the intervals …