Over-ordering of ultrasound and pre-operative investigations for inguinal hernia repair at Northern Health: a Choosing Wisely audit.

Recommendation 1: Most pre-operative coagulation studies were unindicated, while adherence to Choosing Wisely guidelines was better for pre-operative full blood examination, urea, electrolytes and creatinine, glycated haemaglobin and electrocardiogram. Recommendation 2: The majority of patients received an inguinal hernia ultrasound, most of which had no documented indication.