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Published on: January 4, 2011
Effect of bipolar cautery on tensile strength of 6-0 polyglactin 910 suture
1Department of Ophthalmology, Ochsner Clinic and Alton Ochsner Medical Foundation, New Orleans, LA 70121, USA.
Purpose:
To determine the effect of bipolar cautery on 6-0 polyglactin 910 suture.
Methods:
Three groups of sutures were tested for maximum tensile strength. The first group (direct cautery) had bipolar cautery applied directly to the suture. The second group (scleral cautery) had bipolar cautery applied directly on top of the sclera, through which the suture was passed one-half scleral thickness. The third group (control) had no application of cautery to the suture.
Results:
The mean tensile strength for the direct cautery sutures (n=8) was 553 g; for the scleral cautery sutures (n=7), 577 g; and for the control sutures (n=5), 553 g. There was no statistically significant difference in tensile strength between the three groups, with the analysis of variance yielding P=.56.
Conclusion:
Bipolar cautery causes little to no risk of reducing the tensile strength of 6-0 polyglactin 910 suture in the setting of strabismus surgery.
