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

10 settembre 2026 aggiornato da: 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.

Panoramica dello studio

Stato

Reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

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 di studio

Interventistico

Iscrizione (Stimato)

60

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

    • Van
      • Van, Van, Turchia (Türkiye), 65300
        • Reclutamento
        • University of Health Sciences Türkiye, Van Training and Research Hospital
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

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

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Altro
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Separare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: 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.
Comparatore attivo: 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.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Intraoperative Jejunal Diameter
Lasso di tempo: 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
Lasso di tempo: 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

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Operative Difficulty Score
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

22 maggio 2026

Completamento primario (Stimato)

22 maggio 2027

Completamento dello studio (Stimato)

22 giugno 2027

Date di iscrizione allo studio

Primo inviato

5 settembre 2026

Primo inviato che soddisfa i criteri di controllo qualità

10 settembre 2026

Primo Inserito (Effettivo)

15 settembre 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

15 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

10 settembre 2026

Ultimo verificato

1 settembre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • 2026/05-02

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .