Dr Sheeza Mumtaz, Dr Hassan Mahmood, Dr Ayesha Asghar
Objective: This study was conducted to compare the incidence of syncope in supine versus semi-supine position during the administration of local anesthesia for dental surgery procedures among the local population. Place and Duration: In the Department of Oral and Maxillofacial Surgery, Nishtar Institute of Dentistry, Multan for one-year duration from June 2019 to June 2020. Methods: One thousand healthy patients who presented for tooth extraction were included in this study. The patients were divided into two groups. In Group A, the patients were administered a local anesthetic injection in the supine position, that is, with the patient's head and heart at the same level, while in Group B they were administered local anesthesia in the semi supine position. Results: There were 1000 patients who required tooth extraction under local anesthesia with an age range of 15 to 47 years (mean 28.31 ± 8.55 years). It was observed that 135 patients (27%) treated in the supine position had symptoms of presyncope while 245 patients (49%) had symptoms of presyncope in the semi supine position. The difference was statistically significant (P <0.0001). No patient loses consciousness in the supine position in this study. Conclusion: It was concluded that syncope was easy to prevent if all patients were placed supine beforehand. Key words: Vasodepressor syncope, Dental chair position, Local anesthesia, Complications of local anesthesia.