Geneva, July 7 -- International Clinical Trials Registry received information related to the study (ChiCTR2600127169) titled 'Randomized controlled study on the analgesic effect of bupivacaine liposomes, a long-acting local anesthetic, compared to ropivacaine in local anesthesia after hemorrhoidectomy and its potential to reduce opioid demand' on June 25.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: General Hospital of the Northern Theater Command of the Chinese People's Liberation Army

Condition: Haemorrhoids

Intervention: Bupivacaine liposome group:Within 10 minutes after the surgery, the non-blinded researcher injected the test drug by infiltration at four different locations around the subject's anu...