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Updated: May 26, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Utility of preoperative cardiac evaluation in pediatric patients undergoing surgery for obstructive sleep apnea
Peter C Revenaugh1, Lauren J Chmielewski, Thomas Edwards
1Head and Neck Institute, Department of Otolaryngology-Head and Neck Surgery, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
Insights
Preoperative cardiac evaluations rarely reveal significant findings in pediatric obstructive sleep apnea (OSA) patients. However, a higher apnea-hypopnea index (AHI) predicts postoperative respiratory complications after adenotonsillectomy (TA).
Area of Science:
- Pediatric Cardiology
- Sleep Medicine
- Respiratory Medicine
Background:
- Obstructive sleep apnea (OSA) is common in children undergoing adenotonsillectomy (TA).
- Cardiac evaluations are often performed preoperatively, but their utility in pediatric OSA is debated.
- Postoperative respiratory complications following TA are a significant concern.
Purpose of the Study:
- To determine the prevalence of clinically relevant cardiac findings in pediatric OSA patients before TA.
- To assess the association between cardiac findings and postoperative respiratory complications.
- To evaluate the correlation between OSA severity (AHI) and cardiac parameters.
Main Methods:
- Retrospective chart review of pediatric patients (10 months–15 years) who underwent echocardiography and polysomnography (PSG) prior to TA for OSA.
- Independent review of echocardiograms by two pediatric cardiologists.
- Stratification of patients by apnea-hypopnea index (AHI) severity.
Main Results:
- No clinically relevant cardiac abnormalities were found in the 57 reviewed patients.
- Increased AHI was significantly associated with postoperative respiratory complications (P < .05).
- Left ventricular mass index was not significantly related to AHI, contrary to prior studies.
Conclusions:
- Routine preoperative cardiac workup for pediatric OSA patients may not be necessary unless comorbidities exist.
- Preoperative AHI is a valuable tool for identifying patients at risk of respiratory complications post-TA.
- Cardiac evaluations and OSA severity (AHI) did not predict postoperative respiratory complications in this cohort.
Objectives:
To identify the prevalence of clinically relevant findings during cardiac evaluations of pediatric patients with obstructive sleep apnea (OSA) undergoing adenotonsillectomy (TA), and to determine the association between cardiac findings and postoperative respiratory complications.
Design:
Retrospective medical chart review.
Patients:
Pediatric patients aged 10 months to 15 years who underwent both echocardiography and polysomnography (PSG) within 6 months prior to TA for OSA from April 2007 through April 2011.
Main Outcome Measures:
Two pediatric cardiologists independently reviewed echocardiographic studies for evidence of cardiovascular disease. Patients were stratified based on apnea-hypopnea index (AHI) severity (1-5, >5-10, and >10). These groups were compared according to demographic, electrocardiographic (ECG), and echocardiographic values, and postoperative respiratory complications.
Results:
The medical charts of 57 of 900 patients identified were reviewed following exclusion of those with congenital cardiac abnormalities. The AHI groupings did not differ demographically. No clinically relevant abnormalities were identified on the echocardiogram of any patient. There was a statistically significant association between increased AHI and the appearance of postoperative respiratory complications (P < .05). Indicators of myocardial hypertrophy, such as left ventricular mass index, were not significantly related to AHI in contrast to previously published studies. No echocardiographic or ECG findings were identified that were associated with increased number of postoperative respiratory complications or OSA severity based on AHI.
Conclusions:
The lack of clinically relevant findings during preoperative cardiac evaluations suggests that aggressive cardiac workup in pediatric patients with OSA may not be indicated unless dictated by comorbidities. Consistent with results in prior studies, preoperative AHI can identify patients at risk for respiratory complications following TA.
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