Note: A first-degree AV block is also part of a trifascicular block, as the AV node is sometimes considered the third fascicle. ECG Examples: First-Degree Atrioventricular (AV) Block ECG (Example 1) ...

A first-degree AV block is indicated on the ECG by a prolonged PR interval. Recall that the P wave indicates atrial depolarization (initiated by firing of the SA node).

Healthcare professionals may also call this condition first-degree atrioventricular (AV) block. It is a type of arrhythmia, or abnormal heartbeat. There are three degrees of heart block — first ...

The diagnosis is NSR, first-degree AV block, 3:1 AV block, Mobitz type II, and high-degree AV block. The rhythm is regular with a rate of 30 beats/min. The QRS complex duration is normal (0.08 sec ...

The diagnosis is normal sinus rhythm, first-degree AV block (prolonged AV conduction), premature ventricular complexes, escape junctional complex, left ventricular hypertrophy with associated ST-T ...

A 1st-degree AV block is a mild form of arrhythmia that causes an abnormal heartbeat due to a delay in the electrical signals passing from the atria to the ventricles through the atrioventricular ...

First-degree and even second-degree heart block (Type I), may be managed with little or no treatment. These types of heart block may have little impact on your long-term health or quality of life.

A PR interval greater than 200ms is considered to be a first degree atrioventricular block (AV block), which means that the signals are delayed (though not blocked), as explained .