Abstract
Introduction
Pneumatic tourniquets (PTs) are commonly used in local anaesthetic cases in the upper limb to provide a bloodless operating field. They give excellent efficacy however their limitations have prompted the introduction of a new single-use sterile silicone ring tourniquet (SRT). The evidence of use of the SRT over the standard PT is limited.
Aim
To compare the level of perceived pain, and therefore tolerance, of the Silicone Ring and Pneumatic tourniquets when applied to the upper arm and to evaluate whether there was a clear benefit of use of either tourniquet in local anaesthetic procedures of the upper limb.
Materials and methods
30 volunteers, 15 male and 15 female, with a median age of 42 were recruited to compare the two tourniquets. Pain was measured using a VAS pain scale on application and at 1, 5 and 10 minutes.
Results
Volunteers experienced significantly more pain on application and at 1 and 5 minutes with the SRT. This difference in pain perceived was most marked upon application. Two volunteers could not tolerate application of the SRT. Three volunteers experienced bruising of the arm and/or forearm following use of the SRT. There was no difference in pain scores at 10 minutes.
Conclusion
Due to the severe pain experienced on application of the SRT it would not be suitable for local anaesthetic procedures in the upper limb. In addition the degree of pain may reduce the patients confidence and adversely affect their experience of the procedure. The PT is more suitable for local procedures. However the SRT may have a role in procedures performed under general anaesthetic.
