RESUMO
The tissue damage and subsequent healing of skin, linea alba and intestinal wall incisions made with a CO2-laser and a stainless steel surgical blade were evaluated clinically and histologically in dogs (n = 10). The amount of blood lost in each type of skin incision was measured by taking the pre- and postoperative mass of surgical swabs. The tissues were sutured and the skin incisions examined every day. The animals were subsequently euthanased (Day 12) and all incisions examined histologically. A delay in the healing process was observed in the laser incisions of the skin during the first 4 d, but there was no difference in the healing rate of the intestinal wounds or of the linea alba. The blood loss due to the laser incisions was significantly less than that caused by the surgical blade. It was concluded that the CO2-laser can be used with confidence when incising the skin and intestine and that, due to its precision, the surgical blade is by far a more accurate method to incise the linea alba.
Assuntos
Cães/cirurgia , Terapia a Laser/efeitos adversos , Cirurgia Veterinária/instrumentação , Cicatrização/fisiologia , Músculos Abdominais/patologia , Músculos Abdominais/cirurgia , Animais , Perda Sanguínea Cirúrgica/veterinária , Volume Sanguíneo , Procedimentos Cirúrgicos Dermatológicos , Intestino Delgado/patologia , Intestino Delgado/cirurgia , Terapia a Laser/instrumentação , Pele/patologia , Aço Inoxidável , Cirurgia Veterinária/métodosRESUMO
Incisions were made in the skin, linea alba and intestine of dogs (n = 5) with a CO2-laser and a stainless steel scalpel blade. The procedures were carried out on Day 0, 8, 10 and 11 in order to produce 1, 2, 4 and 12-day old samples. On Day 12 the dogs were euthanized, the incisions harvested and the breaking strength of each sample recorded. No significant difference in the strength developed in the skin and intestinal wounds could be observed, whereas the incisions made with the scalpel blade in the linea alba were significantly stronger.
Assuntos
Abdome/fisiologia , Cães/fisiologia , Intestinos/fisiologia , Terapia a Laser/veterinária , Fenômenos Fisiológicos da Pele , Abdome/cirurgia , Animais , Procedimentos Cirúrgicos Dermatológicos , Cães/cirurgia , Intestinos/cirurgia , Resistência à Tração , Cicatrização/fisiologiaRESUMO
The CO2-laser is currently used as a scalpel by a large number of medical surgeons, but in the field of veterinary surgery, relatively little has been published on the subject. A review of the origin of medical lasers, the basic physics of laser energy production and the characteristics of laser light was therefore considered necessary. This review includes a discussion on how the optical radiation generated by the different lasers is absorbed, the cutting power of the CO2-laser, and the effect on healing, tensile strength and haemostasis when used in the skin, linea alba and gastrointestinal tract.
