ArticleAnnals of surgery open : perspectives of surgical history, education, and clinical approaches2021
Positive Expiratory Pressure Therapy on Oxygen Saturation and Ventilation After Abdominal Surgery: A Randomized Controlled Trial.
Article in Annals of surgery open : perspectives of surgical history, education, and clinical approaches, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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0 citing papers in PubMed, 2 citations in OpenAlex.
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
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Abstract
Objective: To evaluate the immediate effects of positive expiratory pressure therapy on oxygen saturation and ventilation after abdominal surgery. Background: Positive expiratory pressure therapy to treat postoperative hypoxia is widespread, despite a lack of evidence of effect. Methods: This randomized, sham-controlled, crossover trial investigated adults 1-2 days after abdominal surgery at Umeå University Hospital, Sweden. The intervention was positive expiratory pressure of 10-15 cm H Results: Eighty patients were included and randomized and 76 patients were analyzed. Oxygen saturation increased from a baseline mean of 92% to 95%, Conclusions: Positive expiratory pressure breathing after abdominal surgery improves oxygen saturation during the maneuver because of hyperventilation, but it is followed by apnea, hypoventilation, and oxygen desaturation. The effect is not different from the expiration to a sham device or hyperventilation. It is time to stop positive expiratory pressure therapy after abdominal surgery, as there is no evidence of effect in previous trials, apart from the adverse effects reported here.
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