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COMPARATIVE STUDY
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Comparison of the ultrasonic scalpel to CO2 laser and electrosurgery in terms of tissue injury and adhesion formation in a rabbit model.
Fertility and Sterility 1997 Februrary
OBJECTIVE: To determine the relative effect of an ultrasonic scalpel on reproductive tissue compared with CO2 laser and electrosurgery.
DESIGN: Prospective, randomized animal study.
SETTING: University laboratory setting.
ANIMALS: Sixteen New Zealand White rabbits.
INTERVENTION(S): A steel scalpel, an ultrasonic scalpel, a CO2 laser, or electrosurgery were used to perform an ovarian wedge resection and to remove the distal uterine horn. A 3-cm longitudinal incision also was made in the uterine horn.
MAIN OUTCOME MEASURE(S): The number of 1-second bursts of needle-tip electrosurgery required for hemostasis, the depth and degree of coagulation necrosis, degree of fibrin deposition, and postoperative adhesion formation.
RESULT(S): The amount of electrosurgery needed to achieve hemostasis was less for any of the four power techniques than for the steel scalpel, with the exception of the ultrasonic scalpel at level 5 when used on the ovary. The depth (range: 0.30 to 0.38 mm) and the degree of coagulation necrosis was not different for any of the power techniques. The fibrin score was greatest for the ultrasonic scalpel at level 5 in both the ovarian tissue and the uterine tissue. There was no difference in adhesion scores for the power techniques and the steel scalpel.
CONCLUSION(S): The ultrasonic scalpel at level 3 is not different from either CO2 laser or electrosurgery in terms of hemostatic properties, coagulation necrosis, or adhesion formation in the rabbit model.
DESIGN: Prospective, randomized animal study.
SETTING: University laboratory setting.
ANIMALS: Sixteen New Zealand White rabbits.
INTERVENTION(S): A steel scalpel, an ultrasonic scalpel, a CO2 laser, or electrosurgery were used to perform an ovarian wedge resection and to remove the distal uterine horn. A 3-cm longitudinal incision also was made in the uterine horn.
MAIN OUTCOME MEASURE(S): The number of 1-second bursts of needle-tip electrosurgery required for hemostasis, the depth and degree of coagulation necrosis, degree of fibrin deposition, and postoperative adhesion formation.
RESULT(S): The amount of electrosurgery needed to achieve hemostasis was less for any of the four power techniques than for the steel scalpel, with the exception of the ultrasonic scalpel at level 5 when used on the ovary. The depth (range: 0.30 to 0.38 mm) and the degree of coagulation necrosis was not different for any of the power techniques. The fibrin score was greatest for the ultrasonic scalpel at level 5 in both the ovarian tissue and the uterine tissue. There was no difference in adhesion scores for the power techniques and the steel scalpel.
CONCLUSION(S): The ultrasonic scalpel at level 3 is not different from either CO2 laser or electrosurgery in terms of hemostatic properties, coagulation necrosis, or adhesion formation in the rabbit model.
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