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Hearing loss in patients undergoing coronary artery bypass grafting with or without extracorporeal circulation
Barlas N Aytacoglu1, Cengiz Ozcan, Nehir Sucu
1Department of Cardiovascular Surgery, Mersin University School of Medicine, Mersin, Turkey.
Insights
Coronary artery bypass grafting can cause hearing loss. Patients undergoing extracorporeal circulation experienced significantly more postoperative hearing threshold changes, indicating an increased risk of hearing impairment.
Area of Science:
- Cardiology
- Otolaryngology
- Surgical Outcomes
Background:
- Coronary artery bypass grafting (CABG) is a common cardiac surgery.
- Potential complications of CABG include postoperative hearing changes.
- The impact of extracorporeal circulation (ECC) on hearing thresholds post-CABG requires investigation.
Purpose of the Study:
- To compare postoperative hearing thresholds in patients undergoing CABG.
- To determine if extracorporeal circulation influences hearing loss after CABG.
Main Methods:
- Prospective evaluation of 37 patients undergoing CABG.
- Comparison of hearing threshold changes between patients with (Group I) and without (Group II) extracorporeal circulation.
- Statistical analysis using the t-test for two independent variables.
Main Results:
- Hearing threshold changes were observed in 45% of Group I patients (n=20) and 17.65% of Group II patients (n=17).
- The difference in hearing threshold changes between the two groups was statistically significant (p=0.0426).
Conclusions:
- Postoperative hearing threshold changes occur after CABG and may not be clinically apparent.
- Extracorporeal circulation appears to be an additional risk factor for hearing loss following CABG.
Background:
Our aim was to investigate the differences in postoperative hearing thresholds in patients undergoing coronary artery bypass grafting with (Group I, n=20) or without (Group II, n=17) extracorporeal circulation.
Material/Methods:
37 patients undergoing coronary artery bypass grafting with or without extracorporeal circulation were prospectively evaluated in terms of hearing threshold changes with the intention of documenting hearing losses postoperatively. The t-test for two independent variables was used for statistical analysis.
Results:
Hearing threshold changes were detected in 9 Group I patients (45%) and 3 Group II patients (17.65%). The difference between the two groups was statistically significant (p=0.0426).
Conclusions:
Postoperative hearing threshold changes, not necessarily revealed by clinical examinations, are encountered after coronary artery bypass grafting operations. Extracorporeal circulation usage seems to bring an additional risk in terms of hearing loss.
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