This unique square pan does it all. Copper Chef Square Pan is the Multi-Purpose Non-Stick Pan that replaces your stock pot, rice cooker, baking pan, frying pan, wok, and roasting pan. Revolutionary square ceramic design and deep-dish sides give you more room to cook more food. Up to 25% more cooking space than traditional nonstick round frying pans.
Causes of First Degree Heart Block. Many highly conditioned athletes with an increased vagal tone have a first degree heart block. Vagal tone is an intrinsic inhibition of heart beats by the vagal nerve that is responsible for slowing down the heart. Other causes of first degree heart block are: Infectious disease â such as Lyme disease, which is associated with carditis (a heart complication of the disease) and usually found in children; viruses can also cause myocarditis or inflammation of the heart muscles.
First Degree AV Block. First degree AV block is simply an increase in the time it takes for the impulse from the atrium to reach the ventricles. In a normal heart rhythm, the PR interval is in the range of .12 to .20 seconds. In first degree AV block, that interval will exceed .20 seconds and can be as long as .50 seconds in extreme examples. The cause for this delay lies in the AV node.