• Indian J Crit Care Med · Oct 2009

    Role of noninvasive ventilation in weaning from mechanical ventilation in patients of chronic obstructive pulmonary disease: an Indian experience.

    • Shiva B N Prasad, Dhruva Chaudhry, and Rajan Khanna.
    • Department of Clinical Immunology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India. drshivaravi@yahoo.co.in
    • Indian J Crit Care Med. 2009 Oct 1;13(4):207-12.

    BackgroundEndotracheal intubation and mechanical ventilation (MV) are often needed in patients of chronic obstructive pulmonary disease (COPD) with acute hypercapnic respiratory failure. The rate of weaning failure is high and prolonged MV increases intubation associated complications.ObjectiveTo evaluate the role of Noninvasive ventilation (NIV) in weaning patients of chronic obstructive pulmonary disease (COPD) from MV, after T piece trial failure.DesignA prospective, randomized, controlled study was conducted in a tertiary care centre. 30 patients of acute exacerbation of COPD with acute on chronic hypercapnic respiratory failure, who were mechanically ventilated, were included in the study A T-piece weaning trial was attempted once the patients achieved satisfactory clinical and biochemical parameters. After T-piece failure, defined as pH < 7.35, PaCO(2) >50 mmHg, PaO(2) <50 mmHg, HR >100/min, RR >35, patients were randomized to receive either NIV or PSV.ResultsDemography, severity of disease and clinical profiles were similar in both groups. No significant difference between the two groups in duration of MV (6.20 +/- 5.20 days vs. 7.47 +/- 6.38 days, P > 0.05), duration of weaning (35.17 +/- 16.98 and 47.05 +/- 20.98 hours, P > 0.05) or duration of ICU stay (8.47 +/- 4.79 and 10.80 +/- 5.28 days, P > 0.05) in Gp I and Gp II, respectively. Five patients developed VAP in the PSV group, where as only one patient had pneumonia in the NIV group. Lesser number of deaths in the NIV group at discharge from ICU (3 vs. 5 patients, respectively) and at 30 days (5 vs. 9 patients, respectively), it did not achieve statistical significance (P > 0.05).ConclusionNIV is as useful as PSV in weaning and can be better in weaning failure especially in COPD for earlier weaning, decrease ICU stay, complications and mortality.

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