Comparação entre a ileocistoplastia convencional e assistida por laparoscopia : estudo experimental em suinos
Nivaldo da Silva Lavoura Junior
TESE
Português
T/UNICAMP L397c
[Laparoscopic assisted versus conventional ileocystoplasty]
Campinas, SP : [s.n.], 2009.
67f. : il.
Orientador: Carlos Arturo Levi D'Ancona
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
Resumo: Introdução: A videolaparoscopia, na Urologia, vem sendo empregada em cirurgias reconstrutivas complexas. Devido às vantagens, como menor intensidade de dor e menor tempo de recuperação pós-operatória. Objetivo: Comparar a ileocistoplastia assistida por videolaparoscopia com sua versão...
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Resumo: Introdução: A videolaparoscopia, na Urologia, vem sendo empregada em cirurgias reconstrutivas complexas. Devido às vantagens, como menor intensidade de dor e menor tempo de recuperação pós-operatória. Objetivo: Comparar a ileocistoplastia assistida por videolaparoscopia com sua versão convencional, utilizando um modelo experimental de suínos; avaliar os aspectos intraoperatórios, aspectos funcionais do reservatório, recuperação pós-operatória do animal e incidência de aderência intraperitonial. Material e Métodos: Foram utilizados 30 porcos machos da raça Large-White, com peso variando entre 20 e 25 Kg. Separados em 4 grupos, sendo Grupo I: 10 animais submetidos a ileocistoplastia assistida por videolaparoscopia, Grupo II: 10 animais submetidos a ileocistoplastia aberta, Grupo III: 5 animais submetidos a simulação por videolaparoscopia e Grupo IV: 5 animais submetidos a simulação de cirurgia aberta. As variáveis analisadas foram: o tempo operatório total, tempo da anastomose vesicoileal, ganho de peso, capacidade e pressão vesicais, incidência, tipo, grau e o escore de aderência intraperitonial. O método estatístico utilizou análise descritiva através de medidas de posição e dispersão para variáveis contínuas e tabelas de frequências para variáveis categóricas. Para comparação de proporções foi utilizado o teste Exato de Fisher. Para comparação de medidas contínuas ou ordenáveis entre 2 grupos, foi utilizado o teste de Mann- Whitney e entre 3 ou mais grupos, o teste de Kruskal-Wallis. Para comparação do ganho de peso, ao longo do tempo e entre os grupos, foi utilizada a ANOVA para medidas repetidas. Devido ao tamanho dos grupos e à variabilidade, foi aplicada a transformação por postos na medida de ganho de peso. O nível de significância adotado para os testes estatísticos foi de 5%. Resultados: O tempo médio de cirurgia apresentou diferença significativa entre os Grupos I e II, sendo respectivamente de 179,4 minutos e de 69,6 minutos (p<0.05) e o tempo médio de anastomose enterovesical foi de 74,8 minutos para o Grupo I e 31,8 minutos para o Grupo II (p<0.05). A média de ganho de peso diário apresentou diferença significativa entre os Grupos I e II, durante as quatro semanas observadas, sendo as médias em cada semana para o Grupo I: 384,7 g; 437,2 g; 493,6 g e 546,2 g. Para o Grupo II, as médias semanais foram de 287,4 g; 353,9 g; 417 g e 485,1 g (p< 0.05 em todas as fases de observação). A capacidade vesical foi semelhante entre os Grupos, sendo as médias para os Grupos I, II, III e IV de 373,6 ml; 385,3 ml; 411 ml e 413 ml (p= 0,2470). As pressões vesicais apresentaram médias de 22,5 cmH20; 20,9 cmH20; 18,2 cmH20 e 21,2 cmH20 (p= 0.3987). Quanto à incidência de aderências intraperitoneal, não houve diferença significativa entre os Grupos I, II, III e IV (p= 0.1789). Entretanto, quanto ao tipo, grau da aderência e escore das aderências houve, diferenças significativas entre os grupos, sendo menores em todos os itens analisados nos grupos simulados (Grupo III e IV) e menores no Grupo I, quando comparado ao Grupo II (P< 0.05), sendo as médias do escore de aderência para os Grupos I, II, III e IV de 2,8; 4,2; 2 e 2. Conclusão: A ileocistoplastia assistida por videolaparoscopia, em modelo experimental de suínos, demanda tempo operatório superior ao convencional, porém, com vantagens significativas: recuperação pós-operatória mais rápida e incidência de aderências intraperitoniais menos complexas e com resultados funcionais do reservatório urinário semelhantes aos da cirurgia convencional
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Abstract: Introduction: Based on the concept of less invasive surgical techniques, indications for video laparoscopy in Urology have grown and are well established either for ablative or reconstructive surgeries. The potential advantages of video laparoscopy are: less pain; shorter hospital stay;...
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Abstract: Introduction: Based on the concept of less invasive surgical techniques, indications for video laparoscopy in Urology have grown and are well established either for ablative or reconstructive surgeries. The potential advantages of video laparoscopy are: less pain; shorter hospital stay; earlier recovery; biological advantages such as lower incidence of intraperitoneal adhesions, fewer stimuli to immunosuppression, smaller and more esthetic scars, less self-image aggression - especially in children.
Laparoscopic reconstructive surgery takes longer than open surgery as it requires intracorporeal sutures. However, with the standardization of the operative technique and continuous training, it is possible to reduce duration, making it approximately the same as in an open surgery. Objective: Compare laparoscopic assisted ileocystoplasty with open ileocystoplasty in an experimental model in pigs, evaluating intraoperative aspects, postoperative recovery, development of peritoneal adhesions and functional results. Material and Methods: The study was conducted on 30 Large-white male pigs (20- 25Kg). The animals were divided into 4 groups. Group I (10 animals that underwent laparoscopic assisted ileocystoplasty), Group II ( 10 animals that underwent open surgery), Group III (5 animals underwent laparoscopy simulation) and Group IV (5 animals that underwent open surgery simulation). Studied variables were: total operative time, ileovesical anastomosis time, postoperative urodynamic results (bladder capacity and compliance), daily and weekly weight gain and intraperitonial adhesions (incidence and type, after animal sacrifice). Results: Mean operative time for groups I and II was 179.4 and 69.6 minutes respectively, and this difference was significant (p<0.05). Mean ileovesical anastomosis time had also significant difference (p<0.05) between groups I (74.8 min) and II (31.8 min).
Significant differences were noted in mean weekly weight gain when comparing the first 4 weeks after surgery, Groups I (1st week: 384.7g ; 2nd week: 437.2g ; 3rd week: 493.6g and 4th week: 546.2g ) and II (1st week: 287.4g; 2nd week: 353.9g ; 3rd week: 417g and 4th week: 485.1g). Post operative bladder capacity and compliance differences among all groups were not significant (p>0.05). Overall incidence of intraperitoneal adhesions was not significant different in all groups (p>0.05). However, adhesions complexity and mean adherence "score" was higher in Group II (4.2 - open surgery) when compared to Groups I (2.8), III (2.0) and IV (2.0). This difference was significant (p<0.05). Conclusion: Laparoscopic assisted ileocystoplasty requires more surgical time than open surgery, but has significant advantages. Postoperative recovery is faster and intraperitoneal adhesions are less complex in laparoscopic assisted ileocystoplasty than conventional (open) surgery. Functional results are the same with open and laparoscopic assisted ileocystoplasty Ver menos
Laparoscopic reconstructive surgery takes longer than open surgery as it requires intracorporeal sutures. However, with the standardization of the operative technique and continuous training, it is possible to reduce duration, making it approximately the same as in an open surgery. Objective: Compare laparoscopic assisted ileocystoplasty with open ileocystoplasty in an experimental model in pigs, evaluating intraoperative aspects, postoperative recovery, development of peritoneal adhesions and functional results. Material and Methods: The study was conducted on 30 Large-white male pigs (20- 25Kg). The animals were divided into 4 groups. Group I (10 animals that underwent laparoscopic assisted ileocystoplasty), Group II ( 10 animals that underwent open surgery), Group III (5 animals underwent laparoscopy simulation) and Group IV (5 animals that underwent open surgery simulation). Studied variables were: total operative time, ileovesical anastomosis time, postoperative urodynamic results (bladder capacity and compliance), daily and weekly weight gain and intraperitonial adhesions (incidence and type, after animal sacrifice). Results: Mean operative time for groups I and II was 179.4 and 69.6 minutes respectively, and this difference was significant (p<0.05). Mean ileovesical anastomosis time had also significant difference (p<0.05) between groups I (74.8 min) and II (31.8 min).
Significant differences were noted in mean weekly weight gain when comparing the first 4 weeks after surgery, Groups I (1st week: 384.7g ; 2nd week: 437.2g ; 3rd week: 493.6g and 4th week: 546.2g ) and II (1st week: 287.4g; 2nd week: 353.9g ; 3rd week: 417g and 4th week: 485.1g). Post operative bladder capacity and compliance differences among all groups were not significant (p>0.05). Overall incidence of intraperitoneal adhesions was not significant different in all groups (p>0.05). However, adhesions complexity and mean adherence "score" was higher in Group II (4.2 - open surgery) when compared to Groups I (2.8), III (2.0) and IV (2.0). This difference was significant (p<0.05). Conclusion: Laparoscopic assisted ileocystoplasty requires more surgical time than open surgery, but has significant advantages. Postoperative recovery is faster and intraperitoneal adhesions are less complex in laparoscopic assisted ileocystoplasty than conventional (open) surgery. Functional results are the same with open and laparoscopic assisted ileocystoplasty Ver menos
D'Ancona, Carlos Arturo Levi, 1952-
Orientador
Riccetto, Cássio Luís Zanettini
Avaliador
Lima, Marcelo Lopes de
Avaliador
Fugita, Oscar Eduardo Hidetoshi, 1963-
Avaliador
Colombo Junior, Jose Roberto
Avaliador
Comparação entre a ileocistoplastia convencional e assistida por laparoscopia : estudo experimental em suinos
Nivaldo da Silva Lavoura Junior
Comparação entre a ileocistoplastia convencional e assistida por laparoscopia : estudo experimental em suinos
Nivaldo da Silva Lavoura Junior
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