Dr. Smith's ECG Blog

JANUARY 9, 2024

She had a single chamber ICD/Pacemaker implanted several years prior due to ventricular tachycardia. Answer : The ECG above shows a regular wide complex tachycardia. Said differently, the ECG shows a rather slow ventricular tachycardia with a 2:1 VA conduction. Cardiac output (CO) was being maintained by the tachycardia.

Tachycardia 119

Tachycardia Electrophysiology Atrial Flutter Ischemia 119

Dr. Smith's ECG Blog

JANUARY 23, 2024

Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. Isoprenalin was discontinued, and a temporary transveous pacemaker was implanted. The patient stabilized following pacemaker placement. The following ECG was recorded during one of these episodes of VT.

Tachycardia 107

Tachycardia Arrhythmia Heart Disease Sudden Cardiac Death 107

Cardiomatics

APRIL 5, 2024

Interpreting the waves and detecting abnormalities: Typically, the heart conducts electricity in a pathway starting in the sinoatrial node (SA), our heart’s “natural pacemaker”, located in the wall of the right atrium. Sinus tachycardia – sinus rhythm above 100 bpm is a sinus tachycardia.

Arrhythmia 92

Arrhythmia Tachycardia Bradycardia Electrocardiogram 92

The British Journal of Cardiology

DECEMBER 3, 2024

A 74-year-old man with a heterotopic heart transplant experienced alternating episodes of sustained native heart ventricular tachycardia and prolonged asystole. These were managed with cardioversion, drug therapy and pacemaker insertion.

Heart Transplant 40

Heart Transplant Transplant Pacemaker Physiology 40

Dr. Smith's ECG Blog

OCTOBER 19, 2022

(Ken Grauer points out that this 5th beat appears to be due to an early atrial beat and that these early beats continue for a few beats, suggesting a short run of atrial tachycardia.) Our electrophysiologists give an example of this here: "Asynchronous" mode means that the pacemaker will pace regardless of what the native beats are doing.

Pacemaker 52

Pacemaker Physiology ICU Blog 52

Circulation

NOVEMBER 10, 2023

Among 299 patients with CRT-pacemakers (BVP-111, LBBAP-188), VT/VF occurred in 8 patients in the BVP group vs. none in the LBBAP group (7.2% Physiologic resynchronization by LBBAP may be associated with lower risk of arrhythmias compared with BVP. The occurrence of VT/VF was significantly lower with LBBAP compared with BVP (4.2%

Atrial Fibrillation 40

Atrial Fibrillation Pacemaker Physiology Heart Failure 40

Dr. Smith's ECG Blog

JULY 19, 2024

Because of the complexity of pacemaker troubleshooting — I was happy to find the wonderful on-line “primer” ( with color-coded illustrations ) by Dr. Harry Mond — that outlines a user-friendly approach to — “Where Am I Pacing From?” NOTE #2: I always like to look for the presence of an underlying rhythm in pacemaker tracings.

Chest Pain 115

Chest Pain Myocardial Infarction Pacemaker STEMI 115