Esta página foi traduzida automaticamente e a precisão da tradução não é garantida. Por favor, consulte o versão em inglês para um texto fonte.

Effect of Oral Laxative Use Before Colorectal Surgery on Intraoperative Surgical Difficulty (OLAX-CRC)

10 de setembro de 2026 atualizado por: IBRAHIM DOGAN, Van Training and Research Hospital
This prospective randomized pilot study will evaluate whether the use of an oral laxative before elective laparoscopic colorectal surgery affects small-bowel diameter and intraoperative surgical difficulty. Adult patients scheduled for elective laparoscopic colorectal resection will be randomly assigned to receive either oral laxative plus rectal enema preparation or rectal enema preparation alone. During surgery, the diameters of the jejunum and ileum will be measured using a standardized method. The study will also compare operative difficulty, bowel manipulation time, operation duration, need for additional ports, conversion to open surgery, intraoperative complications, blood loss, and early postoperative outcomes between the two groups. The findings may help clarify whether oral laxative use influences intraoperative conditions during laparoscopic colorectal surgery.

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

Mechanical bowel preparation is commonly used before elective colorectal surgery. Although its effects on postoperative outcomes have been widely investigated, limited evidence is available regarding the effect of oral laxatives on intraoperative small-bowel distension and technical difficulty during laparoscopic colorectal surgery. Increased intraluminal fluid following oral laxative administration may lead to small-bowel distension, potentially impairing surgical exposure and increasing the need for bowel manipulation.

In this study, small-bowel diameter will be assessed intraoperatively using a standardized measurement method after laparoscopic access and establishment of pneumoperitoneum. Jejunal diameter will be measured approximately 50 cm distal to the ligament of Treitz, and ileal diameter approximately 20 cm proximal to the ileocecal valve. Measurements will be performed in the transverse plane without applying mesenteric tension and, when feasible, the mean of two measurements will be recorded. At the end of the operation, the operating surgeon will assess overall operative difficulty using a Likert-type scale ranging from very easy to very difficult. This pilot study is intended to provide preliminary evidence for the design of future adequately powered studies and to support the evaluation of current bowel-preparation practices.

Tipo de estudo

Intervencional

Inscrição (Estimado)

60

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

    • Van
      • Van, Van, Turquia (Türkiye), 65300
        • Recrutamento
        • University of Health Sciences Türkiye, Van Training and Research Hospital
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto
  • Adulto mais velho

Aceita Voluntários Saudáveis

Não

Descrição

Inclusion Criteria:

  • Age 18 years or older
  • Scheduled for elective laparoscopic colorectal resection
  • American Society of Anesthesiologists (ASA) physical status I-III
  • Able and willing to provide written informed consent

Exclusion Criteria:

  • Requirement for emergency surgery
  • Mechanical intestinal obstruction, gastrointestinal perforation, or generalized peritonitis
  • Anticipated extensive intra-abdominal adhesions
  • Active inflammatory bowel disease
  • Pregnancy
  • Serious systemic disease constituting a contraindication to oral laxative use
  • Inability to perform standardized intraoperative small-bowel diameter measurements

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Outro
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Solteiro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Oral Laxative Plus Rectal Enema
Participants assigned to this arm will receive preoperative bowel preparation consisting of an oral laxative combined with a rectal enema before elective laparoscopic colorectal surgery.
Participants assigned to the experimental arm will receive an oral laxative as part of preoperative mechanical bowel preparation, in addition to a rectal enema, before elective laparoscopic colorectal surgery. The oral laxative will be administered according to the institution's standard preoperative bowel preparation protocol.
Participants in both study arms will receive a rectal enema as part of preoperative bowel preparation before elective laparoscopic colorectal surgery. Participants in the comparator arm will receive the rectal enema without an oral laxative.
Comparador Ativo: Rectal Enema Alone
Participants assigned to this arm will receive preoperative bowel preparation consisting of a rectal enema alone, without an oral laxative, before elective laparoscopic colorectal surgery.
Participants in both study arms will receive a rectal enema as part of preoperative bowel preparation before elective laparoscopic colorectal surgery. Participants in the comparator arm will receive the rectal enema without an oral laxative.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Intraoperative Jejunal Diameter
Prazo: Intraoperatively, after laparoscopic access and establishment of pneumoperitoneum
Jejunal diameter will be measured in centimeters approximately 50 cm distal to the ligament of Treitz, in the transverse plane, under standard pneumoperitoneum pressure and without applying mesenteric tension. When feasible, two measurements will be obtained and their mean will be recorded.
Intraoperatively, after laparoscopic access and establishment of pneumoperitoneum
Intraoperative Ileal Diameter
Prazo: Intraoperatively, after laparoscopic access and establishment of pneumoperitoneum
Ileal diameter will be measured in centimeters approximately 20 cm proximal to the ileocecal valve, in the transverse plane, under standard pneumoperitoneum pressure and without applying mesenteric tension. When feasible, two measurements will be obtained and their mean will be recorded.
Intraoperatively, after laparoscopic access and establishment of pneumoperitoneum

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Operative Difficulty Score
Prazo: At the end of surgery, on the day of the procedure
Overall operative difficulty will be assessed by the operating surgeon at the end of the procedure using a 5-point Likert scale: 1 = very easy, 2 = easy, 3 = moderate, 4 = difficult, and 5 = very difficult. Higher scores indicate greater operative difficulty.
At the end of surgery, on the day of the procedure
Estimated Intraoperative Blood Loss
Prazo: Intraoperatively, on the day of surgery
The estimated volume of blood lost during surgery, as recorded in the operative and anesthesia records.
Intraoperatively, on the day of surgery
Incidence of Intraoperative Serosal Injury
Prazo: Intraoperatively, on the day of surgery
The number of participants who experience an unintended serosal injury during surgery, as documented in the operative record.
Intraoperatively, on the day of surgery
Incidence of Intraoperative Organ Injury
Prazo: Intraoperatively, on the day of surgery
The number of participants who experience an unintended injury to an intra-abdominal organ during surgery, as documented in the operative record.
Intraoperatively, on the day of surgery
Incidence of Intraoperative Bleeding Requiring Intervention
Prazo: Intraoperatively, on the day of surgery
The number of participants who experience intraoperative bleeding requiring an additional hemostatic intervention beyond routine surgical hemostasis.
Intraoperatively, on the day of surgery
Requirement for an Additional Laparoscopic Port
Prazo: Intraoperatively, on the day of surgery
The number of participants in whom placement of at least one additional laparoscopic port beyond the planned port configuration is required to complete the procedure.
Intraoperatively, on the day of surgery
Conversion From Laparoscopic to Open Surgery
Prazo: Intraoperatively, on the day of surgery
The number of participants whose planned laparoscopic procedure is converted to an open surgical approach.
Intraoperatively, on the day of surgery
Incidence of Any Postoperative Complication Within 30 Days
Prazo: From the day of surgery through postoperative day 30
The number of participants who experience at least one surgery-related postoperative complication within 30 days after surgery. Each participant will be counted once, regardless of the number of complications experienced.
From the day of surgery through postoperative day 30
Incidence of Anastomotic Leakage Within 30 Days
Prazo: From the day of surgery through postoperative day 30
The number of participants who develop an anastomotic leak within 30 days after surgery, as documented by clinical, radiological, endoscopic, operative, or drainage findings.
From the day of surgery through postoperative day 30
Incidence of Surgical Site Infection Within 30 Days
Prazo: From the day of surgery through postoperative day 30
The number of participants who develop a surgical site infection within 30 days after surgery, including superficial incisional, deep incisional, or organ/space infection.
From the day of surgery through postoperative day 30
Incidence of Postoperative Ileus Within 30 Days
Prazo: From the day of surgery through postoperative day 30
The number of participants who develop postoperative ileus within 30 days after surgery, as documented in the medical record based on delayed recovery or interruption of gastrointestinal function.
From the day of surgery through postoperative day 30
Time Required for Bowel Manipulation and Displacement
Prazo: Intraoperatively, on the day of surgery
The time required to manipulate the bowel and displace it from the operative field during surgery.
Intraoperatively, on the day of surgery
Time Required for Intraoperative Bowel Diameter Measurements
Prazo: Intraoperatively, on the day of surgery
The time required to perform intraoperative measurements of the jejunal and ileal diameters.
Intraoperatively, on the day of surgery
Time Required to Complete the Anastomosis
Prazo: Intraoperatively, on the day of surgery
The time from initiation of anastomosis construction to completion of the anastomosis during surgery.
Intraoperatively, on the day of surgery
Total Operation Time
Prazo: Intraoperatively, on the day of surgery
The total duration of the surgical procedure, defined as the time from skin incision to completion of skin closure.
Intraoperatively, on the day of surgery

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

22 de maio de 2026

Conclusão Primária (Estimado)

22 de maio de 2027

Conclusão do estudo (Estimado)

22 de junho de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

5 de setembro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

10 de setembro de 2026

Primeira postagem (Real)

15 de setembro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

15 de setembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

10 de setembro de 2026

Última verificação

1 de setembro de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • 2026/05-02

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .