A case of second degree atrioventricular block following mitral valve replacement is presented during which varying PR intervals with sudden marked increase in PR interval in consecutive beats was seen. The electrocardiogram is discussed and various hypotheses to explain the possible electrophysiological mechanism are presented.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3861048 | PMC |
| http://dx.doi.org/10.1016/S0019-4832(12)60097-2 | DOI Listing |
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