ABSTRACT
B-type natriuretic peptide [BNP] level is known to increase in patients with rheumatic mitral stenosis. In this systematic review, we aimed to discuss the possible association between plasma BNP level and the success rate of percutaneous transvenous mitral commissurotomy. PubMed and Scopus databases were searched systematically, using the following key terms: "B-type natriuretic peptide" OR "BNP" AND "percutaneous transvenous mitral commissurotomy" OR "percutaneous transluminal mitral commissurotomy" OR "PTMC" OR "percutaneous balloon mitral valvotomy" OR "PBMV". The title, keywords and abstract of relevant articles were searched thoroughly. Among 27 articles found in these databases, 18 studies were excluded during different stages of article selection, based on the inclusion and exclusion criteria. A total of 333 patients were evaluated in the selected studies. Overall, 75 and 191 cases were male and female, respectively. Sex ratio was not specified in two studies, evaluating a total of 67 patients. The obtained results showed that BNP level may decrease after a successful PTMC. Furthermore, post-operative plasma levels of BNP and N-terminal proBNP could be considered as predictors of the success rate of PTMC. Based on the results reported in the evaluated articles, there may be an association between post-operative plasma levels of BNP family and the success rate of PTMC