About 158,000 results
Open links in new tab
  1. What Is Atrial Tachycardia with Variable Block? - Biology ...

    Atrial tachycardia with variable block (AT/VB) is a heart rhythm disorder where the heart’s upper chambers beat unusually fast. It involves a rapid atrial rate and irregular conduction to the …

  2. Atrial Flutter • LITFL • ECG Library Diagnosis

    Oct 8, 2024 · The term “AV block” in the context of atrial flutter is something of a misnomer. AV block is a physiological response to rapid atrial rates and implies a normally functioning AV node.

  3. Atrial flutter with multilevel atrioventricular block and ...

    An electrocardiogram showing atrial flutter in which varying ratios of AV conduction and the cyclical recurrence of varying QRS morphologies are observed is presented.

  4. Heart Block: Types, Symptoms & Causes - Cleveland Clinic

    Apr 14, 2024 · Symptoms of heart block vary depending on the severity of the block and how it affects the heart pump. Heart block symptoms may include: Chest pain. Tiredness. Shortness …

  5. Supraventricular tachycardia may be possible atrial ...

    Supraventricular tachycardia may be possible atrial tachycardia with variable block. One intriguing aspect of atrial tachycardia is the potential for variable block, which means the conduction of …

  6. Atrial Flutter with Variable High-Degree AV Block: An ...

    Jun 20, 2025 · The first electrocardiogram (ECG) showed atrial flutter with a usual atrial rate of 300 beats per minute (bpm) and variable AV block, varying from 6:1 to 7:1, which can result in …

  7. Atrial tachycardia with block - Primary Care Notebook

    Apr 13, 2025 · Paroxysmal atrial tachycardia is a narrow complex tachycardia with atrial rates 150–250 bpm, often re-entrant, and variable AV block.