Background
During transurethral resection of a tumour in the bladder dome, gas bubbles can accumulate in the bladder dome and obscure the surgical field.
Technique
Intermittent switching of the irrigation fluid onto the outflow channel of the continuous-flow irrigating resectoscope provides a simple and effective way of draining gas bubbles via the inflow channel. Once clear vision returns, re-connecting the irrigation fluid to the inflow channel enables safe resection to continue.