[Technical defects of tourniquet manometers]

Area of Science:

• Medical Devices
• Trauma Surgery
• Patient Safety

Background:

• Tourniquet application is associated with a complication rate of 0.013% to 1.15%, including delayed healing, infections, thrombosis, and compartment syndromes.
• Complication rates are influenced by tourniquet pressure, duration, cuff design, and potential technical defects in pressure gauges.
• A case of peroneal palsy after tourniquet use prompted an investigation into manometer defects.

Purpose of the Study:

• To investigate the occurrence rate of technical defects in tourniquet pressure gauges.
• To assess the reliability of medical tourniquet devices in clinical practice.
• To recommend measures for improving patient safety during tourniquet application.

Main Methods:

• A review of existing literature on tourniquet-related complications and manometer defects.
• Inspection and calibration testing of all tourniquet pressure gauges utilized at the Department for Trauma Surgery, Medical School of the University of Vienna.
• Analysis of the defect rate among the tested pressure gauges.

Main Results:

• Six out of eleven (54.5%) inspected tourniquet pressure gauges were found to be defective.
• The high rate of defects indicates a significant risk of inaccurate pressure delivery during tourniquet application.
• No prior literature reported on the specific incidence of technical defects in tourniquet manometers.

Conclusions:

• Periodic calibration and checking of tourniquet pressure gauges are crucial to minimize patient risks.
• The findings underscore the importance of regular maintenance and quality control for medical devices like tourniquets.
• Further research into optimal tourniquet pressure and duration settings is warranted, as recommendations vary.