Safety and Efficacy of Ultra-Low-Dose Intracavernosal Adrenaline for Intraoperative Penile Erection in Transurethral Surgeries under Spinal Anesthesia

CONTEXT: Penile tumescence during endoscopic urological surgeries is a rare but problematic complication that can lead to postponement of the surgery. This study was done to assess the efficacy of ultra-low-dose intracavernosal adrenaline in the management of intraoperative penile erection. SUBJECTS AND METHODS: Between January 2015 and December 2019, all the patients who developed significant penile tumescence during endourology procedures following regional anesthesia were included. Twenty patients required intervention. They were given half milliliter of solution containing 2.5 μg of adrenaline with insulin syringe. Baseline systolic and diastolic blood pressure, heart rate, and oxygen saturation were noted and were recorded at 1, 2, 3, 4, and 5 min after giving adrenaline. Time to achieve complete detumescence and any other related complications were also noted. RESULTS: Penile detumescence was achieved in 2.6 ± 0.47 min in all the patients. There was an increase in heart rate from baseline value which increased to maximum by 3 min and returned back to baseline by 5 min. Systolic and diastolic blood pressure remained unchanged. CONCLUSION: All the patients achieved penile detumescence without any significant adverse effects after receiving intracavernosal injection of ultra-low-dose adrenaline.