A case of infective mitral endocarditis after percutaneous transvenous mitral commissurotomy

We encountered a case of infective mitral endocarditis (IE) due to Methicillin resistant staphylococcus aureus (MRSA) after percutaneous transvenous mitral commissurotomy (PTMC). A 65-year-old woman underwent PTMC for mitral stenosis. Two days later, she incurred a fever of more than 40 degrees C, and MRSA was detected in her blood culture. Inflammation and renal function deteriorated despite transvenous administration of antibiotics. Transesophageal echocardiogram revealed vegetation at the mitral valve. Mitral valve replacement was performed after diagnosis of IE, and MRSA was identified from the vegetation. The patient improved with the transvenous application of antibiotics including vancomycin hydrochloride. The blood culture became negative and inflammation was suppressed. In view of this case, we consider that IE is a possible complication following PTMC.