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Rupture of interventricular septum in acute myocardial infarction
Insights
Rupture of the interventricular septum following acute inferior myocardial infarction is rare but serious. Early surgical repair, potentially combined with other procedures, offers the best chance for survival.
Area of Science:
- Cardiology
- Cardiac Surgery
- Medical Diagnostics
Background:
- Interventricular septum rupture is a rare but life-threatening complication of acute myocardial infarction.
- It often occurs in the context of advanced, diffuse coronary artery disease due to the septum's dual blood supply.
Observation:
- This report details three cases of interventricular septum rupture associated with acute inferior myocardial infarction.
- Diagnostic challenges, including differentiation from papillary muscle rupture, are discussed.
Findings:
- One patient achieved successful surgical repair, including aneurysmectomy.
- Advanced coronary artery disease is the primary risk factor, with hypertension playing a lesser role.
Implications:
- Early surgical intervention is recommended, potentially involving infarctectomy, aneurysmectomy, and coronary artery bypass grafting.
- Intra-aortic balloon counterpulsation can aid in preoperative and postoperative management.
Abstract:
Three cases of rupture of the interventricular septum occurring coincident with acute inferior myocardial infarction are reported and the relevant literature is reviewed. One patient under-went successful surgical repair and, in addition, had an aneurysmectomy. Clues and pitfalls in diagnosis as well as the possible confusion with ruptured papillary muscle are discussed. Due to a dual blood supply to the interventricular septum, rupture occurs most often in the setting of advanced, diffuse coronary artery disease. Hypertension or other factors may be of lesser importance. Early surgical approach is advocated and may of necessity include infarctectomy, aneurysmectomy, and coronary artery by-pass surgery in addition ot repair of the ruptured interventricular septum. Use of an intraaortic balloon counterpulsator may prove to be of considerable help in the preoperative and postoperative management of these patients.