Objective. Postintubation hypotension (PIH) is a common and recognized adverse event associated with poor outcomes in emergency medicine patients requiring endotracheal intubation. Our objectives were to determine the incidence of PIH following tracheal intubation in elective surgery patients.
Materials and Methods. A retrospective study by reviewing the anesthesia records of all patients presenting for elective surgery requiring tracheal intubation between February 1, 2017, and March 1, 2017 was performed. Patients were divided into 2 groups according to the severity of the operation: Group S1 (major surgery) and Group S2 (minor surgery). The primary outcome measure was the incidence of PIH. PIH was claimed when systolic blood pressure (SBP) decreased below 90 mm Hg or decreased more than 20% from the baseline in two consecutive measurements at least 15 minutes after intubation. Secondary outcome measures included the relationship between PIH and anesthetic induction agents used to facilitate ETI and ASA physical status.
Results. A total of 291 elective surgery patients were identified. The primary outcome of PIH was observed in 10.3% with no difference between study groups (major surgery-10.2% vs. minor surgery-10.3%). Most of the patients who developed PIH were ASA II score (76.6%) and propofol was the most commonly used intravenous anesthetic associated with hypotension (96.7%).
Conclusion. Although a transient decrease in systolic and diastolic blood pressure has been reported in most patients undergoing intubation for elective surgery, development of PIH occured only in 10.3% of patients. Most of the patients who developed PIH were administered propofol.
Keywords: post-intubation hypotension, elective surgery, endotracheal intubation, adverse events