Resumen

LUCENA, Jorge R; CORONEL, Paúl  y  USECHE, César. Minimally invasive surgery of the thyroid gland: Experimental study in the dog. Rev. Fac. Cienc. Vet. [online]. 2010, vol.51, n.1, pp.3-8. ISSN 0258-6576.

A study was conducted to determine if the video-assisted lobectomy performed on a canine model, reduces surgical time, bleeding volume, nerve structures injuries; and improves the cosmetic results of the cervical scar, when compared to conventional lobectomy. Thirty-six adult crossbred dogs of either sex from the animal facility of the Institute of Experimental Surgery, Universidad Central de Venezuela were used. The animals were randomly allocated into two experimental groups: Group A: Eighteen dogs who underwent conventional thyroid lobectomy (CTL); Group B: Eighteen dogs who underwent video-assisted thyroid lobectomy (VATL) without gas insulation. Cosmetic results were assessed by surgeons according to a scale, as follows: excellent, good, average, and bad. The results of the experiment show that dogs operated with the VATL technique exhibited significantly (P<0.05) the highest improvements (9.2±0.5), when compared to the CTL technique (5.8±0.7).  Surgical time lasted longer (P<0.001) in dogs under VATL (81±3 min) than in dogs subjected to CTL (62±4 min). Bleeding volume was significantly higher in CTL (34±5 mL) than in VATL (23±5 mL). No statistically significant differences were found regarding paralysis of vocal cords or surgical wound infections. The VATL is a valid alternative in conventional surgery, becoming a feasible and safe experimental model. Comparative and multicentric studies should be carried out in human subjects to determine both safety and efficacy of these techniques.

Palabras clave : Dog; thyroid gland; extirpation; techniques.

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