Background & Aim: Anxiety is one of the emotional conditions among patients scheduled for surgery that can result in increasing postoperative pain, increasing analgesic and anesthetic requirements and prolonging hospital stay. The aim of this study was to assess the effectiveness of acupressure (acupuncture without needle) in reducing patients' anxiety before abdominal surgeries.

Methods & Materials: In this randomized, blinded, sham controlled trial, 70 patients who were scheduled to undergo abdominal surgery in Tehran University of Medical Sciences' hospitals were selected using convenience sampling method. The patients were randomized to an acupressure group (n=35) or a placebo group (n=35), receiving acupressure either at the right points (Yintang and Shen men) in acupressure group or at sham points in the placebo group for 10 min. Anxiety was recorded on a Visual Analog Scale (0-10). Vital signs were measured before and after pressure application in both groups.

Results: The anxiety was decreased in both groups following pressure application for 10 min (P<0.001). The amount of anxiety was significantly different between the groups (P<0.001). The heart rate, respiratory rate, and diastole/systole pressure (P<0.001) were decreased in the case group. Only heart rate (P=0.016) and respiratory rate (P=0.007) were decreased in the placebo group. Changes in respiratory rate and systole pressure following pressure application were statistically significant between two groups.

Conclusion: Acupressure at the right points can decrease anxiety before abdominal surgeries but it has no clinical effect on vital signs.