List two mechanical complications of myocardial infarction that nurses must recognize early.

Prepare for the Emergency Nursing Orientation 3.0 Cardiovascular Emergencies Test. Use interactive flashcards and detailed explanations with multiple choice questions. Enhance your understanding of cardiovascular emergencies and succeed on your exam!

Multiple Choice

List two mechanical complications of myocardial infarction that nurses must recognize early.

After a myocardial infarction, tissue necrosis can weaken heart structures and lead to mechanical problems that appear suddenly and threaten life. The two mechanical complications you must recognize early are rupture of a papillary muscle causing acute mitral regurgitation and rupture of the interventricular septum with a left-to-right shunt. Papillary muscle rupture disrupts the mitral valve apparatus, so blood leaks back into the left atrium during systole, causing abrupt pulmonary edema and hypotension; a new or changing systolic murmur may be present, and the patient can crash quickly, requiring urgent surgical evaluation. Ventricular septal rupture creates a hole between the left and right ventricles, producing a significant left-to-right shunt with a harsh holosystolic murmur and rapid deterioration from reduced forward flow and pulmonary overcirculation. Both conditions are surgical emergencies and demand aggressive stabilization (vasopressors or afterload management as appropriate) and rapid coordination with the surgical team. Other post-MI issues can occur, but these two represent the classic early mechanical disruptions that nurses must spot promptly.

After a myocardial infarction, tissue necrosis can weaken heart structures and lead to mechanical problems that appear suddenly and threaten life. The two mechanical complications you must recognize early are rupture of a papillary muscle causing acute mitral regurgitation and rupture of the interventricular septum with a left-to-right shunt. Papillary muscle rupture disrupts the mitral valve apparatus, so blood leaks back into the left atrium during systole, causing abrupt pulmonary edema and hypotension; a new or changing systolic murmur may be present, and the patient can crash quickly, requiring urgent surgical evaluation. Ventricular septal rupture creates a hole between the left and right ventricles, producing a significant left-to-right shunt with a harsh holosystolic murmur and rapid deterioration from reduced forward flow and pulmonary overcirculation. Both conditions are surgical emergencies and demand aggressive stabilization (vasopressors or afterload management as appropriate) and rapid coordination with the surgical team. Other post-MI issues can occur, but these two represent the classic early mechanical disruptions that nurses must spot promptly.

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