• Mineto Kamata, Mumin Hakim, Dmitry Tumin, Senthil G Krishna, Aymen Naguib, and Joseph D Tobias.
• Department of Anesthesiology & Pain Medicine, Nationwide Children's Hospital, Columbus, OH. Electronic address: Mineto.Kamata@gmail.com.
• J. Cardiothorac. Vasc. Anesth. 2017 Apr 1; 31 (2): 543-548.

ObjectivesTo evaluate the effects of transesophageal echocardiography (TEE) probe insertion on the endotracheal cuff pressure (CP).DesignProspective observational study.SettingSingle standing, not-for-profit pediatric hospital.ParticipantsA total of 80 pediatric patients (aged 6 days to 18.4 years) who underwent cardiac surgery and intraoperative TEE.InterventionsNone.Measurements And Main ResultsFollowing anesthesia induction and endotracheal intubation, the CP was recorded at 4 points: before the insertion of the TEE (P1), at TEE insertion (P2), during TEE examination (P3), and after the probe was advanced into the stomach (P4). Twenty patients were enrolled in each of the following age groups:<1 year of age; 1-4 years of age; 5-8 years of age; and 9-18 years of age. CP was compared between pairs of time points using paired t-tests, and differences in CP over time were compared among age groups using repeated-measures analysis of variance. CP at P1, P2, P3, and P4 was 18.7±11.6, 26.7±14.4, 22.3±12.4, and 20.6±12.6 cmH2O, respectively. Although CP significantly increased from P1 to P2 (p<0.001), there was no significant difference between P1 and P4 (95% CI; -0.3 to 4.1; p = 0.083). There was no significant difference in CP change based on the age of the patient.ConclusionFollowing a transient increase in CP with TEE probe insertion, the CP returned to baseline after the tip of the TEE probe was advanced into the stomach. There was no variation among age groups in the magnitude of the CP change during the study.Copyright © 2017 Elsevier Inc. All rights reserved.

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