Study Overview
This study examined how different tourniquet pressures affect nerve activity during foot and ankle surgery.
Purpose
The goal was to see if lower tourniquet pressure could reduce nerve damage compared to higher pressure during surgery.
Methods
We included 24 patients aged 18-65 who had foot and ankle surgery. They were randomly assigned to two groups:
- Group 1: Tourniquet pressure of limb occlusion pressure (LOP) + 50 mmHg (12 patients).
- Group 2: Tourniquet pressure of LOP + 100 mmHg (12 patients).
We measured the time it took for nerve signals to decrease and return after the tourniquet was removed.
Results
- Patients in Group 1 experienced 50% nerve signal loss at an average of 47 minutes.
- Group 2 showed 50% loss earlier, at 34 minutes.
- Full loss for all nerves occurred at 69 minutes in Group 1 and 56 minutes in Group 2.
- Nerve signals returned to normal at 8.5 minutes for Group 1 and at 12.6 minutes for Group 2 after deflation.
These findings suggest that lower pressure is safer for preserving nerve function during surgery.
Conclusions
Using a lower tourniquet pressure positively affected nerve recovery times:
- Lower tourniquet pressure led to delayed nerve effects.
- Nerve function returned more quickly once the pressure was released.
Clinical Importance
This research supports the use of lower tourniquet pressures to enhance safety during surgeries and improve recovery times.
Value of Clinical Trials
Clinical trials are essential for developing safe treatments. They help translate research into practical applications in medicine.
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