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Results 1 - 1 of 1 for Second degree atrioventricular block
  1. Heart block 
    ... heart block: Rarely has symptoms or causes problems Second-degree heart block: The electrical impulse may not reach the lower ... symptoms. The symptoms may be different for first, second, and third degree heart block. Most often, you would not have any symptoms ...
    https://medlineplus.gov/ency/article/007658.htm - Medical Encyclopedia