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Laparoscopic partial nephrectomy in rats
Meyer, Fernando; Ioshii, Sérgio Ossamu; Chin, Eduardo Wei Kin; Esser, Danielle Mussoi; Marcondes, Renata Tomasetti; Patriani, Andressa Hubar; Pimpão, Bruno de Figueiredo.
  • Meyer, Fernando; PUCPR. Surgery Department. Division of Urology. Curitiba. BR
  • Ioshii, Sérgio Ossamu; PUCPR. Division of Pathology. Curitiba. BR
  • Chin, Eduardo Wei Kin; Irmandade da Santa Casa de Misericórdia de Curitiba. Department of Urology. Curitiba. BR
  • Esser, Danielle Mussoi; PUCPR. Department of Pathology. Curitiba. BR
  • Marcondes, Renata Tomasetti; PUCPR. Department of Pathology. Curitiba. BR
  • Patriani, Andressa Hubar; PUCPR. Department of Pathology. Curitiba. BR
  • Pimpão, Bruno de Figueiredo; PUCPR. Department of Pathology. Curitiba. BR
Acta cir. bras ; 22(2): 152-156, Mar.-Apr. 2007. ilus
Article in English | LILACS | ID: lil-443694
ABSTRACT

PURPOSE:

To establish an experimental model of laparoscopic partial nephrectomy (LPN) in rats and to analyze morphological alterations in the renal parenchyma utilizing an electric cautery and harmonic scalpel.

METHODS:

Forty Wistar rats were used, divided in 2 experiments with 20 rats each experiment I, LPN was performed with an electric cautery and the rats were subdivided into groups A and B; experiment II, LPN was performed with a harmonic scalpel and they were subdivided into groups C and D. The animals in groups A and C were sacrificed shortly after surgery and the remnant kidney was removed to study the following variables necroses and degeneration. In groups B and D a laparatomy was performed for retrieval of the remnant kidney on the 14th day after surgery to analyze fibrous scarring.

RESULTS:

For the variables necroses and fibrous scarring, the electric cautery creates, on average, greater width than that produced by the harmonic scalpel (p=0.0002 and p=0.0068 respectively). Regarding the variable of degeneration, we found no significant difference between the two types of scalpels (p=0.1267).

CONCLUSIONS:

LPN in rats is an adequate and feasible experimental model. The electric cautery caused greater damage to remnant renal tissue when compared to harmonic scalpel.
RESUMO

OBJETIVO:

Estabelecer um modelo experimental de nefrectomia parcial laparoscópica (NPL) em ratos e analisar as alterações morfológicas no parênquima renal utilizando-se bisturi elétrico e harmônico.

MÉTODOS:

Foram utilizados 40 ratos Wistar, distribuídos em dois experimentos com 20 ratos cada experimento I, NPL utilizando-se de bisturi elétrico e subdividindo-se os ratos em grupos A e B; experimento II, NPL realizada com bisturi harmônico e subdividindo-se os ratos em grupos C e D. Os animais dos grupos A e C foram sacrificados após a cirurgia para a remoção do rim operado e estudo das seguintes variáveis necrose e degeneração. Nos grupos B e D a laparotomia para a retirada do rim operado foi após o décimo quarto dia de pós-operatório para a análise da cicatriz fibrosa.

RESULTADOS:

O bisturi elétrico provocou uma necrose e cicatriz fibrosa mais extensas em relação ao bisturi harmônico (p=0.0002 e p=0.0068 respectivamente). Em relação a variável degeneração, não houve diferença entre os tipos de bisturis (p=0.1267).

CONCLUSÕES:

NPL em ratos é um modelo experimental adequado e factível. O bisturi elétrico causa danos teciduais mais intensos no rim operado quando comparado com o bisturi harmônico.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Surgical Instruments / Laparoscopy / Electrocoagulation / Kidney / Nephrectomy Type of study: Etiology study / Prognostic study Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2007 Type: Article Affiliation country: Brazil Institution/Affiliation country: Irmandade da Santa Casa de Misericórdia de Curitiba/BR / PUCPR/BR

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Full text: Available Index: LILACS (Americas) Main subject: Surgical Instruments / Laparoscopy / Electrocoagulation / Kidney / Nephrectomy Type of study: Etiology study / Prognostic study Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2007 Type: Article Affiliation country: Brazil Institution/Affiliation country: Irmandade da Santa Casa de Misericórdia de Curitiba/BR / PUCPR/BR