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Increase in Airway Pressure Resulting From Prone Position Patient Placing May Predict Intraoperative Surgical Blood Loss

Authors
 Jae Chul Koh  ;  Jong Seok Lee  ;  Dong Woo Han  ;  Satbyul Choi  ;  Chul Ho Chang 
Citation
 Spine, Vol.38(11) : 678-682, 2013 
Journal Title
 Spine 
ISSN
 0362-2436 
Issue Date
2013
Abstract
STUDY DESIGN: Prospective study on intraoperative blood loss during lumbar spine surgery. OBJECTIVE: To evaluate the relationship between airway pressure change due to the patient's prone position and intraoperative blood loss during lumbar spine surgery. SUMMARY OF BACKGROUND DATA: A prone position may increase abdominal pressure. Changes in abdominal pressure may influence airway pressure and cause intraoperative blood loss as a result of epidural venous congestion. METHODS: Patients undergoing lumbar spine surgery were placed in a prone position after the administration of general anesthesia. Peak airway pressure, plateau pressure, mean blood pressure, and heart rate were measured 5 minutes after anesthesia induction and 15 minutes after being placed in a prone position. Intraoperative blood loss was measured at the end of surgery. RESULTS: Mean peak airway pressure was 13.7 ± 1.8 mm Hg while in a supine position and increased to 15.1 ± 2.5 mm Hg after placement in the prone position (P = 0.002). Plateau pressure was 12.6 ± 2.5 mm Hg while in a supine position and increased to 14.1 ± 1.9 mm Hg after placement in a prone position (P = 0.0002). Intraoperative blood loss was correlated with peak (R2 = 0.405) and plateau (R2 = 0.489) airway pressure changes. CONCLUSION: Increase in airway pressure resulting from placement into a prone position may predict intraoperative surgical blood loss.
Full Text
http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&AN=00007632-201305150-00020&LSLINK=80&D=ovft
DOI
10.1097/BRS.0b013e31828cb3e5
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
Lee, Jong Seok(이종석) ORCID logo https://orcid.org/0000-0002-7945-2530
Chang, Chul Ho(장철호) ORCID logo https://orcid.org/0000-0001-5647-8298
Han, Dong Woo(한동우) ORCID logo https://orcid.org/0000-0002-8757-663X
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/87248
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