A survival case of acute mitral regurgitation and cardiogenic shock caused by subtotal occlusion of the first diagonal branch

[Papillary muscle rupture due to acute myocardial infarction followed by cardiogenic shock, pulmonary edema, and acute renal failure]

AIM

The case of successfull surgical treatment of anterolateral papillary muscle rupture due to acute myocardial infarction with cardiogenic shock, pulmonary edema and acute renal failure.

CASE REPORT

A 62-year old male from Belgrade with chest pain, hypotension and a new heart murmur refused hospitalization at the Military Medical Academy. On the third day of his illness he was readmitted to MMA as an emergency due to hemoptysis. Examination revealed mitral valve anterolateral papillary muscle rupture. The patient, with signs of cardiogenic shock and acute renal failure, was immediately operated on. The surgery was performed using extracorporeal circulation. An artificial mitral valve was implanted, and myocardial revascularization accomplished with one venous graft of the left anterior descending artery. On the second postoperative day, hemodialysis was carried out due to acute renal failure. On the 28th postoperative day, the patient was discharged from the hospital being hemodynamically stable with normal renal function and balanced anticoagulation. The case is interesting in terms of unrecognized papillary muscle rupture that led to the development of cardiogenic shock, hemoptysis and acute renal failure.

CONCLUSION

Papillary muscle rupture is a fatal complication of acute myocardial infarction. Early recognition and urgent surgical intervention were life-saving in the case of complete papillary muscle rupture. Surgical treatment, regardless of high risk, is the procedure of choice.

Acute mitral regurgitation due to total rupture in the anterior papillary muscle after acute myocardial infarction successfully treated by emergency surgery

A 68-year-old female was admitted for sudden onset of chest pain. She received a successful percutaneus coronary intervension for total occlusion in the diagonal artery, but continued to develop progressive heart failure. A chest X-ray showed right pulmonary edema without cardiomegaly, and an echocardiogram revealed massive mitral regurgitation with prolapse in the anterior mitral leaflet due to a rupture in the papillary muscle. An emergency operation was conducted using routine cardiopulmonary bypass. There was complete rupture in the anterior papillary muscle. Mitral valve replacement with posterior mitral leaflet preservation was performed using a size 25 mm Carbomedics prosthetic valve. The postoperative course was uneventful, and she was discharged on postoperative day 29 in New York Heart Association class I. Postoperative pathological findings showed necrosis in the papillary muscle with inflammatory changes. Early diagnosis, prompt medical stabilization, and aggressive surgical intervention are essential to save such a group of patient.