2024年10月8日 · A form of 2nd degree AV block in which there is intermittent non-conducted P waves without progressive prolongation of the PR interval

Second-degree atrioventricular block (AV block) is a disease of the electrical conduction system of the heart. It is a conduction block between the atria and ventricles. The presence of second-degree AV block is diagnosed when one or more (but not all) of the atrial impulses fail to conduct to the ventricles due to impaired conduction.

2024年10月8日 · A review of the ECG characteristics of "fixed ratio blocks", i.e. second degree AV block with 2:1 or 3:1 conduction ratios.

Second-degree AV block – Intermittent atrial conduction to the ventricle, often in a regular pattern (eg, 2:1, 3:2), or higher degrees of block, which are further classified into Mobitz type I (Wenckebach) and Mobitz type II second-degree AV block.

A second-degree atrioventricular (AV) block type II is also known as Mobitz type II second-degree AV block. This bradycardic rhythm is identified through an electrocardiogram (ECG) and is caused by an irregular block of atrioventricular conduction below the AV node.

Second-Degree Atrioventricular Block Treatment & Management. eMedicine. Apr 28, 2014. http://emedicine.medscape.com/article/161919-treatment#showall.

Second-degree AV block (Type 2) is almost always a disease of the distal conduction system located in the ventricular portion of the myocardium. This rhythm can be recognized by the following characteristics: non-conducted p-waves (electrical impulse conducts through the AV node but complete conduction through the ventricles is blocked, thus no ...

2024年10月8日 · Second degree heart block (2nd degree AV block) with a P:QRS ratio of 3:1 or higher, producing an extremely slow ventricular rate.

A second-degree type II AV block indicates significant conduction disease in this His-Purkinje system and is irreversible (not subject to autonomic tone or AV blocking medications). This is a...

Causes of Second-Degree Type II Heart Block. Myocardial infarction with anterior wall involvement, advanced coronary artery disease, damage to the structures that make up the electrical conduction system, medications that slow AV conduction like calcium channel blockers, Digoxin, beta blockers etc. Treatment for Second-Degree Type II Heart Block