Renal Hypothermia During Partial Nephrectomy
A Randomized Controlled Trial of Renal Hypothermia During Partial Nephrectomy
The Objective is to determine if renal hypothermia during open partial nephrectomy results in improved post-operative renal function compared to warm ischemia.
Primary Aim is to determine the effect of hypothermia on preservation of overall renal function compared to no hypothermia in patients who require hilar vessel clamping during open partial nephrectomy for a renal tumor.
Hypothesis: Hypothermia will result in improved post-operative preservation of overall renal function.
Secondary Aim is to determine the effect of hypothermia on preservation of affected renal function (kidney with the tumor) compared to no hypothermia in patients who require hilar vessel clamping during open partial nephrectomy for a renal tumor.
Hypothesis: Hypothermia will result in improved post-operative preservation of affected renal function.
Visão geral do estudo
Status
Intervenção / Tratamento
Descrição detalhada
The incidence of renal cell carcinoma is increasing and in 2008 it is estimated that over 51,000 new renal cancers will be diagnosed in the United States. To preserve renal function, urologists commonly remove the diseased segment of the kidney (partial nephrectomy) instead of removing the entire kidney (radical nephrectomy). While the benefit of preserving function in patients with renal cell carcinoma has become clear, optimal preservation techniques are yet to be determined. Specifically, the role of hypothermia during partial nephrectomy has been inadequately studied despite theoretical benefit. The investigators objective is to assess the effectiveness of renal hypothermia during partial nephrectomy. The investigators hypothesis is that renal hypothermia during partial nephrectomy results in improved post-operative renal function compared to warm ischemia.
Methods: To test the investigators hypothesis, 180 partial nephrectomy patients will be randomized to cold or warm ischemia. Global and side-specific renal function will be assessed pre-operatively and 12 months post-operatively using radionucleotide clearance and renal scintigraphy.
Significance: To the investigators knowledge, this study will be the first prospective trial to evaluate the clinical impact of renal hypothermia during partial nephrectomy. Since renal function preservation is the primary purpose of partial nephrectomy, these findings will have an important impact on surgical technique and patient outcome.
Tipo de estudo
Inscrição (Real)
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
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Nova Scotia
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Halifax, Nova Scotia, Canadá, B3H 1V7
- Capital Disctrict Health Authority
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Ontario
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Hamilton, Ontario, Canadá, L8N 4A6
- St. Joseph's Healthcare
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London, Ontario, Canadá, N6C 2R5
- London Health Science Centre
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Ottawa, Ontario, Canadá, K1Y 4E9
- The Ottawa Hospital
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Toronto, Ontario, Canadá, M5G 2N2
- University Health Network
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Quebec
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Québec, Quebec, Canadá, G1R 2J7
- Centre Hospitalier Universitaire de Quebec
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria:
- Patients presenting with a renal mass deemed amenable to an open partial nephrectomy regardless of stage, histology, presence of solitary kidney, multiple tumors or renal function. Participating surgeons will identify patients they consider to be appropriate candidates for partial nephrectomy with or without renal hypothermia.
- Willing to consent to randomization
- Willing to comply with study protocol
Exclusion Criteria:
- Bilateral renal tumours with planned surgery either partial or radical nephrectomy on the contralateral kidney within the 12 months of the study.
- Life expectancy < 3 months as deemed by treating physician
- Age less than 18 years old
- Pregnancy
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Prevenção
- Alocação: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Solteiro
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
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Sem intervenção: No hypothermia
After clamping of the renal vessels, no ice slush will be used.
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Experimental: Hypothermia
saline ice slush around kidney for 10 minutes.
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Within 10 seconds of clamping the renal vessels, the kidney will be encased with saline ice slush for a period of 10 minutes. The slush will be created from sterile saline using an operating room slush machine. The slush is applied by the surgeon and lightly packed around the kidney to ensure complete coverage with at least a 2 cm layer. Slush removal is performed by the surgeon beginning at the 10 minute mark. Enough slush is removed to uncover the tumour area. Surgical incision of the kidney begins as soon as the tumour area is uncovered. When reconstruction of the kidney is complete, the slush is completely removed from the surgical field and the clamps are removed from the renal vein and artery.
Outros nomes:
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Renal function
Prazo: 12 months
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Glomerular filtration rate will be measured using the plasma clearance of 99mTc-DTPA.
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12 months
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Difference in affected renal function
Prazo: 12 months
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Side-specific renal function will be calculated by the product of overall glomerular filtration (determined from 99mTc-DTPA plasma clearance) and relative renal contribution (determined from 99mTc-DTPA renal scintigraphy).
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12 months
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Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Ilias Cagiannos, MD, The Ottawa Hospital, Ottawa Hospital Research Institute
Publicações e links úteis
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Antecipado)
Conclusão do estudo (Antecipado)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- 2010-767; CIHR MOP 269009
Plano para dados de participantes individuais (IPD)
Planeja compartilhar dados de participantes individuais (IPD)?
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