MI Complication (Ventricular Free Wall Rupture) (5–14 days Post-MI)

Ventricular free wall rupture is a serious complication that can occur after a heart attack, specifically between 5 and 14 days post-event. It involves a tear in the wall of the heart's main pumping chamber, the left ventricle, which can cause blood to leak into the sac surrounding the heart. This leakage leads to a dangerous condition called cardiac tamponade, where pressure builds up and prevents the heart from pumping effectively. The heart and circulatory system are primarily affected, leading to sudden chest pain, low blood pressure, and rapid deterioration. This condition requires immediate medical attention because it can cause sudden cardiac arrest and death if untreated.

Ventricular free wall rupture is a catastrophic mechanical complication of acute myocardial infarction (MI) occurring typically 5 to 14 days after the infarct. It results from transmural necrosis and weakening of the infarcted myocardium, leading to a full-thickness tear in the ventricular wall. This rupture allows blood to escape into the pericardial space, causing hemopericardium and subsequent cardiac tamponade. It is most commonly associated with a first MI, especially in patients without prior collateral circulation or reperfusion therapy. Clinically, it presents with sudden onset of hypotension, jugular venous distension, and pulsus paradoxus, often culminating in rapid hemodynamic collapse. The condition carries a high mortality rate and is a major cause of death in the subacute phase of MI.