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Doctoral Thesis
DOI
https://doi.org/10.11606/T.5.2017.tde-05102017-124830
Document
Author
Full name
José Anastacio Dias Neto
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Dall'Oglio, Marcos Francisco (President)
Abe, Daniel Kanda
Guimarães, Gustavo Cardoso
Mitre, Anuar Ibrahim
Távora, Fabio Rocha Fernandes
Title in Portuguese
Influência da experiência prévia em robótica e cirurgia minimamente invasiva na curva inicial da prostatectomia radical laparoscópica
Keywords in Portuguese
Curva de aprendizado
Laparoscopia
Neoplasias da próstata
Próstata
Prostatectomia
Robótica
Abstract in Portuguese
INTRODUÇÃO: Este estudo analisou o impacto da experiência em prostatectomia radical robótica na curva inicial da prostatectomia laparoscópica através dos resultados perioperatórios e funcionais e oncológicos precoces de 110 pacientes com câncer de próstata. PACIENTES E MÉTODOS: 110 pacientes, selecionados aleatoriamente, foram submetidos a PRL por dois cirurgiões com experiência prévia em cirurgia minimamente invasiva e PRR, no Instituto do Câncer do Estado de São Paulo. Os dados foram coletados prospectivamente. Foi utilizada abordagem transperitoneal simulando a técnica robótica. RESULTADOS: Houve uma redução significativa no tempo operatório que diminuiu até o caso 40, quando atingiu um platô. O volume de sangramento mediano foi 250ml (variação 50-1000ml). Nenhum paciente foi transfundido. As complicações foram distribuídas uniformemente ao longo da casuística. A taxa de margens positivas foi de 28,2% (pT2: 20%, pT3: 43,6%), e não apresentou tendência a redução. 61,3% das margens foram apicais. A taxa de continência foi de 88% e atingiu um platô próximo a 95% após 75 casos. CONCLUSÃO: Esse estudo mostra que existem múltiplas curvas no processo de aprendizado da PRL. A curva mais curta foi para tempo operatório. A curva para margens cirúrgicas não foi completada e necessita de intervenção para melhora dos resultados principalmente relacionados a margem apical. A transição entre as técnicas de prostatectomia pode ser considerada segura baseada nas baixas taxas de complicações, ausência de complicações graves ou transfusões sanguíneas
Title in English
The impact of the experience in robotic assisted laparoscopic prostatectomy and in upper tract laparoscopic surgery in the learning curve of laparoscopic radical prostatectomy
Keywords in English
Learning curve, Laparoscopy
Prostate
Prostatectomy
Prostatic neoplasms
Robotics
Abstract in English
INTRODUCTION: This study analyzed the impact of the experience with Robotic-Assisted Laparoscopic Prostatectomy (RALP) on the initial experience with Laparoscopic Radical Prostatectomy (LRP) by examining perioperative results and early outcomes of 110 patients. LRPs were performed by two robotic fellowship trained surgeons with daily practice in RALP. PATIENTS and METHODS: 110 LRP was used to treat aleatory selected patients. The patients were divided into 4 groups for prospective analyses. A transperitoneal approach that simulates the RALP technique was used. RESULTS: The median operative time was 163 minutes (110 - 240), and this time significantly decreased through case 40, when the time plateaued (p = 0.0007). The median blood loss was 250 ml. No patients required blood transfusion. There were no life-threatening complications or deaths. Minor complications were uniformly distributed along the serie (P= 0,6401). The overall positive surgical margins (PSM) rate was 28.2% (20% in pT2 and 43.6% in pT3). PSM was in the prostate apex in 61.3% of cases. At the 12-month follow-up, 88% of men were continent (0-1 pad). CONCLUSION: The present study shows that there are multiple learning curves for LRP. The shallowest learning curve was seen for the operative time. Surgeons transitioning between the RALP and LRP techniques were considered competent based on the low perioperative complication rate, absence of major complications, and lack of blood transfusions. This study shows that a learning curve still exists and that there are factors that must be considered by surgeons transitioning between the two techniques
 
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Publishing Date
2017-10-05
 
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