SUDDEN death in persons with artificial pacemakers is a continuing and disturbing problem. Causes include pacemaker-catheter displacement, electric-component failure, broken wires and rising pacing ...

Serious ventricular arrhythmias due to carotid-sinus massage are extremely uncommon. Meredith and Beckwith 8 recorded 2 cases of transient ventricular tachycardia that followed its use. The first well ...

Late ventricular fibrillation after acute myocardial infarction is associated with a markedly increased risk of 1-year ...

Ventricular fibrillation is a cardiac arrhythmia in which the muscle in the lower chambers of the heart (the ventricles) contracts irregularly and rapidly. The ventricles quiver and are unable to ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact [email protected]. Here is a classic ECG case not usually caught on a ...

This ECG shows ventricular fibrillation. Disorganized wide QRS complexes of relatively low amiplitude are present at a rate of greater than 300 beats per minute. Note the sharp spikes intermittently ...

Although premature ventricular beats (PVBs) in young people and athletes are usually benign, they may rarely mark underlying heart disease and risk of sudden cardiac death during sport. This review ...

Medically reviewed by Rafle Fernandez, MD Key Takeaways Ventricular tachycardia is when the lower chamber of the heart beats ...

Jan. 9, 2026 – 03:17 – Fetterman was hospitalized after a ventricular fibrillation flare-up caused a fall, his latest health scare since his 2022 stroke.

Pulseless ventricular tachycardia occurs when an abnormally rapid heart rate originating in the heart’s lower chambers makes a pulse undetectable. Emergency cardiac defibrillation is usually necessary ...