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Second-degree atrioventricular block

disease of the electrical conduction system of the heart. It is a conduction block between the atria and ventricles.

Pronunciation
/ˈsɛkənd - dəˈɡri ˌeɪtrioʊvɛnˈtrɪkjələr blɑk/
/sɪˈkɒnd - dɪˈɡriː ˌeɪtrɪəʊvɛnˈtrɪkjʊlə blɒk/