Final answer:
Free wall rupture after a myocardial infarction typically occurs within the first week, especially between 3 to 5 days post-MI. It is a life-threatening condition that requires prompt treatment.
Step-by-step explanation:
The question, 'How long after MI can free wall rupture occur?' pertains to a serious complication that can arise following a myocardial infarction (MI), commonly known as a heart attack. Free wall rupture is when a portion of the ventricular muscle wall becomes so damaged that it tears, leading to a potentially fatal situation. This complication typically occurs within the first week after a myocardial infarction, with the highest risk being between 3 to 5 days post-MI. Rapid recognition and surgical intervention are crucial for survival.