INVESTIGATING THE RELATIONSHIP BETWEEN THE RAPID SHALLOW BREATHING INDEX (RSBI) AND EXTUBATION FAILURE AFTER OPEN-HEART SURGERY AT MILITARY HOSPITAL 175
DOI:
https://doi.org/10.59354/ydth175.2025.367Keywords:
Mechanical ventilation weaning, rapid shallow breathing index, open-heart surgery, prediction of weaning failureAbstract
Objective: To describe the characteristics of the rapid shallow breathing index (RSBI) and analyze the relationship between RSBI and weaning failure in patients undergoing open-heart surgery.
Methods: A cross-sectional descriptive study was conducted on 53 patients who underwent open-heart surgery at the Surgical Intensive Care Unit (A12.2), Military Hospital 175, from March 2023 to December 2023. Patients were evaluated for blood gases, hemodynamics, and spontaneous breathing trial (SBT). RSBI was measured 5 minutes before the end of SBT. Weaning failure was defined as failure to pass SBT or reintubation within 48 hours after extubation.
Results: The weaning failure rate was 20.8%. The mean RSBI in the failure group (57.55 ± 14.83 breaths/min/L) was significantly higher than in the success group (34.31 ± 9.00 breaths/min/L; p < 0.01). Factors associated with weaning failure included high BMI, COPD, fluid imbalance, and increased heart rate.
Conclusion: High RSBI is associated with an increased risk of weaning failure in patients undergoing open-heart surgery. Factors such as high BMI, COPD, fluid imbalance, and increased heart rate also contribute to the risk of failure. Further studies with larger sample sizes are needed to confirm these findings.
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