Assertion: mitral valve prolapse | /r/Causes | abnormal heartbeats
Facets:
value: in the most serious cases
type: TEMPORAL
Source sentences:
text: However, in the most serious cases, mitral valve prolapse can cause abnormal heartbeats (arrhythmias) that may eventually become life-threatening.
text: However, in the most serious cases, mitral valve prolapse can cause abnormal heartbeats (arrhythmias) that may eventually become life-threatening.