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  • Title: Noninvasive nasal mask BiPAP management for prolonged respiratory failure following cardiovascular surgery.
    Author: Ishikawa S, Ohtaki A, Takahashi T, Koyano T, Hasegawa Y, Ohki S, Isa Y, Arai K, Kunimoto F, Morishita Y.
    Journal: J Card Surg; 1997; 12(3):176-9. PubMed ID: 9395946.
    Abstract:
    The purpose of this study was to assess the efficacy of nasal mas bi-level positive airway pressure (BiPAP) support in managing respiratory failure following cardiovascular surgery. A total of 20 patients requiring postoperative prolonged respiratory support of 72 hours or longer were studied. BiPAP support was used for eight patients (BiPAP group); the other 12 patients were managed using ordinary oxygen mask treatment (control group). The mean age of the BiPAP group and control group was 65 and 58 years of age, respectively. The mean period of postoperative endotracheal intubation of the BiPAP group and control group was 12 +/- 5 days and 7 +/- 1 days, respectively. Reintubation was necessary in two patients of the control group. The BiPAP group patients required no reintubation. BiPAP support was discontinued within 48 hours in 6 out of 8 patients. The respiratory rates of control group increased (p < 0.1) 24 hours after extubation, however, the respiratory rates of the BiPAP group remained unchanged. The values of the respiratory index of the BiPAP group improved significantly (p < 0.01) after BiPAP management (from 1.5 +/- 0.2 to 0.9 +/- 0.2). The values of the control group, however, remained unchanged. A-aDO2 and Qs/Qt decreased (p < 0.1) in the BiPAP group. There were no significant differences in central venous pressure or circulatory status between the two groups. In conclusion, BiPAP support is a noninvasive management technique for postoperative respiratory failure and may also prevent prolonged endotracheal intubation.
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