• Reitze N Rodseth, Bruce M Biccard, Rong Chu, Giovana A Lurati Buse, Lehana Thabane, Ameet Bakhai, Daniel Bolliger, Lucio Cagini, Thomas J Cahill, Daniela Cardinale, Carol P W Chong, Miłosław Cnotliwy, Salvatore Di Somma, René Fahrner, Wen K Lim, Elisabeth Mahla, Yannick Le Manach, Ramaswamy Manikandan, Wook B Pyun, Sriram Rajagopalan, Milan Radovic, Robert C Schutt, Daniel I Sessler, Stuart Suttie, Thuvaraha Vanniyasingam, Marek Waliszek, and P J Devereaux.
• Perioperative Research Group, Department of Anaesthetics, Inkosi Albert Luthuli Central Hospital, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.
• Anesthesiology. 2013 Aug 1;119(2):270-83.

BackgroundIt is unclear whether postoperative B-type natriuretic peptides (i.e., BNP and N-terminal proBNP) can predict cardiovascular complications in noncardiac surgery.MethodsThe authors undertook a systematic review and individual patient data meta-analysis to determine whether postoperative BNPs predict postoperative cardiovascular complications at 30 and 180 days or more.ResultsThe authors identified 18 eligible studies (n = 2,051). For the primary outcome of 30-day mortality or nonfatal myocardial infarction, BNP of 245 pg/ml had an area under the curve of 0.71 (95% CI, 0.64-0.78), and N-terminal proBNP of 718 pg/ml had an area under the curve of 0.80 (95% CI, 0.77-0.84). These thresholds independently predicted 30-day mortality or nonfatal myocardial infarction (adjusted odds ratio [AOR] 4.5; 95% CI, 2.74-7.4; P < 0.001), mortality (AOR, 4.2; 95% CI, 2.29-7.69; P < 0.001), cardiac mortality (AOR, 9.4; 95% CI, 0.32-254.34; P < 0.001), and cardiac failure (AOR, 18.5; 95% CI, 4.55-75.29; P < 0.001). For greater than or equal to 180-day outcomes, natriuretic peptides independently predicted mortality or nonfatal myocardial infarction (AOR, 3.3; 95% CI, 2.58-4.3; P < 0.001), mortality (AOR, 2.2; 95% CI, 1.67-86; P < 0.001), cardiac mortality (AOR, 2.1; 95% CI, 0.05-1,385.17; P < 0.001), and cardiac failure (AOR, 3.5; 95% CI, 1.0-9.34; P = 0.022). Patients with BNP values of 0-250, greater than 250-400, and greater than 400 pg/ml suffered the primary outcome at a rate of 6.6, 15.7, and 29.5%, respectively. Patients with N-terminal proBNP values of 0-300, greater than 300-900, and greater than 900 pg/ml suffered the primary outcome at a rate of 1.8, 8.7, and 27%, respectively.ConclusionsIncreased postoperative BNPs are independently associated with adverse cardiac events after noncardiac surgery.

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