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  • Title: Self-administered prophylactic postoperative positive expiratory pressure in thoracic surgery.
    Author: Frølund L, Madsen F.
    Journal: Acta Anaesthesiol Scand; 1986 Jul; 30(5):381-5. PubMed ID: 3532680.
    Abstract:
    Application of self-administered postoperative prophylactic positive expiratory pressure (S-PEP) treatment in addition to conventional physiotherapy was investigated in 75 patients undergoing thoracotomy. Twenty-nine patients used a face-mask set supplied with an expiratory resistance (S-PEP group) and 27 patients used a face-mask set without resistance (control group). The observation period and postoperative treatment with the face-mask was 3 days. In the S-PEP group 13 patients developed radiographic atelectasis during the 3 postoperative days compared to eight patients in the control group (P greater than 0.05). The postoperative PaO2 in the S-PEP group was 0.36 kPa lower than in the control group (P greater than 0.05). We conclude that application of S-PEP postoperatively after thoracotomy in addition to conventional physiotherapy including early mobilization had no beneficial effect in preventing atelectasis, as evaluated by changes in blood gas tensions and chest roentgenograms.
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