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Effects of Alveolar Recruitment and Positive End-Expiratory Pressure on Oxygenation during One-Lung Ventilation in the Supine Position.

Title
Effects of Alveolar Recruitment and Positive End-Expiratory Pressure on Oxygenation during One-Lung Ventilation in the Supine Position.
Authors
Yong Seon Choi;Mi Kyung Bae;Young Jun Oh;Soo Young Kim;Ji-Eun Park;Shin Hyung Kim
Issue Date
2015
Journal Title
Yonsei Medical Journal
ISSN
0513-5796
Citation
Yonsei Medical Journal, Vol.56(5) : 1421~1427, 2015
Abstract
PURPOSE: Hypoxemia during one-lung ventilation (OLV) remains a serious problem, particularly in the supine position. We investigated the effects of alveolar recruitment (AR) and positive end-expiratory pressure (PEEP) on oxygenation during OLV in the supine position. MATERIALS AND METHODS: Ninety-nine patients were randomly allocated to one of the following three groups: a control group (ventilation with a tidal volume of 8 mL/kg), a PEEP group (the same ventilatory pattern with a PEEP of 8 cm H₂O), or an AR group (an AR maneuver immediately before OLV followed by a PEEP of 8 cm H₂O). The tidal volume was reduced to 6 mL/kg during OLV in all groups. Blood gas analyses, respiratory variables, and hemodynamic variables were recorded 15 min into TLV (TLV(baseline)), 15 and 30 min after OLV (OLV₁₅ and OLV₃₀), and 10 min after re-establishing TLV (TLV(end)). RESULTS: Ultimately, 92 patients were analyzed. In the AR group, the arterial oxygen tension was higher at TLV(end), and the physiologic dead space was lower at OLV₁₅ and TLV(end) than in the control group. The mean airway pressure and dynamic lung compliance were higher in the PEEP and AR groups than in the control group at OLV₁₅, OLV₃₀, and TLV(end). No significant differences in hemodynamic variables were found among the three groups throughout the study period. CONCLUSION: Recruitment of both lungs with subsequent PEEP before OLV improved arterial oxygenation and ventilatory efficiency during video-assisted thoracic surgery requiring OLV in the supine position.
URI

http://ir.ymlib.yonsei.ac.kr/handle/22282913/140912
DOI
10.3349/ymj.2015.56.5.1421.
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Thoracic & Cardiovascular Surgery
1. 연구논문 > 1. College of Medicine > Dept. of Anesthesiology and Pain Medicine
Yonsei Authors
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