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To study the effect of noninvasive ventilation on hemodynamics and respiratory parameters in postoperative CABG patients


1 Department of Anesthesiology and Critical Care, CTVS Unit, Era's Lucknow Medical College and Hospital, Lucknow, Uttar Pradesh, India
2 Department of Surgery, CTVS Unit, Era's Lucknow Medical College and Hospital, Lucknow, Uttar Pradesh, India
3 Department of Obstetrics and Gynaecology, T S Mishra Medical College, Lucknow, Uttar Pradesh, India
4 Department of Anesthesia, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India

Correspondence Address:
Vansh Priya,
Department of Anesthesia, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Rai Bareilly Road, Lucknow - 226 014, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aer.aer_83_21

Background and Aim: Bilevel positive airway pressure (BIPAP) is emerging as a useful modality in prevention as well as the management of postoperative respiratory dysfunction in patients undergoing coronary artery bypass graft (CABG). Materials and Methods: A total of 50 patients who underwent CABG were managed using BIPAP during postoperative period. Acid–base gas parameters, electrolyte levels, respiratory and hemodynamic parameters, and 24 h urine output before and after BIPAP application were measured. Data were analyzed using SPSS 21.0 version. Paired “t”-test was used to compare the changes in different parameters. Results: The mean age of patients was 57.72 ± 9.67 years (range: 36–85 years), majority were males (84%). Mean body mass index and mean left ventricular ejection fraction of patients were 24.26 ± 3.74 kg.m −2 and 52.77 ± 10.26%, respectively. Mean pO2, pCO2, and respiratory rate before BIPAP application were 90.62 ± 12.90 torr, 40.26 ± 5.39 torr, and 25.64 ± 6.21/min, respectively, which became 158.52 ± 50.43 torr, 37.77 ± 6.98 torr, and 21.78 ± 4.79/min, respectively, after BIPAP application, thus showing a significant change (P < 0.05). No significant change in other parameters was observed. No other adverse effect was noted. Conclusion: BIPAP application helped in improving ventilatory parameters without any adverse impact on hemodynamics and other parameters. Its application was a safe method to prevent respiratory disturbances following cardiac surgery.


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