Karaaslan K, Kocoglu H, Yilmaz F, Koybasi S, Celebi S, Ekerbicer H. Relation between middle ear pressure changes and postoperative nausea and vomiting in pediatric strabismus surgery.
J Clin Anesth 2007;
19:101-4. [PMID:
17379120 DOI:
10.1016/j.jclinane.2006.05.027]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2006] [Revised: 05/15/2006] [Accepted: 05/23/2006] [Indexed: 11/26/2022]
Abstract
STUDY OBJECTIVE
To investigate the effects of tympanometric changes on the frequency of postoperative nausea and vomiting (PONV).
DESIGN
Prospective, observational study.
SETTING
University hospital.
PATIENTS
49 ASA physical status I, nonpremedicated children undergoing elective strabismus surgery.
INTERVENTIONS
Frequency of PONV was assessed at various time intervals (0-2, 2-6, and 6-24 hours) with a 4-point scale (0, no nausea; 1, nausea but no vomiting; 2, one episode of vomiting; 3, two or more episodes of vomiting), and correlation with tympanometric data was investigated.
MEASUREMENTS
Tympanogram was obtained before induction of standardized anesthesia and after full recovery. Fourteen (28.6%) patients had nausea, and 10 (20.4%) patients vomited. The tympanic gradient, compliance, and pressure values were found to be significantly higher in postoperative measurements than their preoperative counterparts (P < 0.05). The volumes of both ears increased postoperatively, but these differences were not statistically significant (P > 0.05). Changes in middle ear pressure, volume, compliance, and gradient did not correlate with PONV (P > 0.05).
CONCLUSIONS
Gradient, compliance, volume, and pressure changes in middle ears were not found to be related to the frequency of nausea and vomiting after strabismus surgery.
Collapse