The Wonders of Water. Water is one of the most basic elements of life but figuring out how much we ought to drink hasn't always been so simple. Most of us grew up thinking we needed to drink eight glasses of water each day, in addition to any other drinks we might choose.
Atrioventricular (AV) block is a type of abnormal heart rhythm, or arrhythmia. The heartâs rhythm (heartbeat) is regulated by natural electrical impulses that travel through the heart muscle.These impulses tell the heartâs chambers when to contract.trioventricular (AV) block is a type of abnormal heart rhythm, or arrhythmia. The heartâs rhythm (heartbeat) is regulated by natural electrical impulses that travel through the heart muscle.
First Degree AV Block. The AV node is a group of specialized conducting cells found in the middle of the heart. The AV node is responsible for transmitting electrical pulses from the top part of the heart to the bottom part of the heart. First-degree AV block refers to a condition where the transmission of impulses through the AV node is slower than expected.