• J. Int. Med. Res. · Oct 2013

    N-terminal prohormone B-type natriuretic peptide and weaning outcome in postoperative patients with pulmonary complications.

    • Gang Ma, Wei Liao, Junke Qiu, Quanguan Su, Yi Fang, and Baochun Gu.
    • Department of Intensive Care Medicine, Cancer Center, Sun Yat-sen University, Guangzhou, China.
    • J. Int. Med. Res. 2013 Oct 1;41(5):1612-21.

    ObjectiveTo evaluate the relationship between plasma N-terminal prohormone B-type natriuretic peptide (NT-proBNP) and weaning outcomes, and the ability of NT-proBNP level to predict weaning success, in cancer patients with pulmonary complications undergoing noncardiac major surgeries.MethodsPatients who were mechanically ventilated following postoperative respiratory failure were enrolled. NT-proBNP levels at the end of a 2-h spontaneous breathing trial were measured. Weaning was considered a success in patients who completed the trial and maintained spontaneous breathing following extubation for >48 h.ResultsOut of 29 patients, 22 patients weaned successfully but weaning failed in 7 patients. Plasma NT-proBNP was significantly higher in the weaning failure group than in the weaning success group. For predicting weaning success, the optimal NT-proBNP threshold value at the end of the spontaneous breathing trial was <448 ng/l (receiver operating characteristic analysis; sensitivity 68.18%, specificity 85.71%, positive predictive value 93.7% and negative predictive value 46.2%).ConclusionMeasuring NT-proBNP at the end of a spontaneous breathing trial may assist in predicting weaning success, as a noninvasive, quantitative and repeatable indicator of cardiac stress in patients with postsurgical respiratory failure.

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