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Laparoscopic Appendectomy: Outcomes of 10 mmHg Versus 15 mmHg Intra-abdominal Pressure

21 juillet 2026 mis à jour par: Dr Yilmaz TURK, Ankara Etlik City Hospital

Comparison of Standard Pneumoperitoneum Pressures in Laparoscopic Appendectomy: Clinical Outcomes of 10 mmHg Versus 15 mmHg Intra-abdominal Pressure

This prospective, randomized controlled trial aims to compare the clinical outcomes of laparoscopic appendectomy performed under two standard pneumoperitoneum pressures (10 mmHg and 15 mmHg). The primary objective is to evaluate postoperative pain, while secondary outcomes include operative time, conversion rate, time to first flatus and bowel movement, length of hospital stay, postoperative ileus, and intra-abdominal abscess formation. The study will determine whether lower-pressure pneumoperitoneum provides comparable surgical conditions while improving postoperative recovery.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Description détaillée

Laparoscopic appendectomy is the standard surgical treatment for acute appendicitis. Carbon dioxide pneumoperitoneum is essential for adequate visualization and operative exposure; however, the optimal intra-abdominal pressure remains controversial. Standard pneumoperitoneum pressures of 12-15 mmHg provide satisfactory visualization but may contribute to increased postoperative pain and adverse cardiopulmonary effects. Lower-pressure pneumoperitoneum has the potential to reduce postoperative discomfort but may increase technical difficulty during surgery.

This single-center, prospective, randomized controlled trial will be conducted at Ankara Etlik City Hospital. Adult patients undergoing laparoscopic appendectomy for acute appendicitis will be randomly assigned to undergo surgery with either 10 mmHg or 15 mmHg pneumoperitoneum. All other perioperative management and surgical techniques will be standardized.

The primary outcome is postoperative pain assessed using the Numeric Rating Scale (NRS). Secondary outcomes include operative time, conversion to open surgery, time to first flatus, time to first bowel movement, length of hospital stay, postoperative ileus, postoperative intra-abdominal abscess, emergency department readmission, and postoperative complications. Patients will be followed according to the institutional postoperative care protocol, including outpatient follow-up for the assessment of postoperative complications.

The results of this study are expected to provide evidence regarding the optimal pneumoperitoneum pressure during laparoscopic appendectomy by balancing surgical exposure with postoperative recovery and patient safety.

Type d'étude

Interventionnel

Inscription (Estimé)

150

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

  • Nom: Yılmaz Türk, Operator Doctor
  • Numéro de téléphone: +90 +905321349903
  • E-mail: yturk9@gmail.com

Lieux d'étude

  • Turquie (Türkiye)
    • Yenimahalle
      • Ankara, Yenimahalle, Turquie (Türkiye), 06170
        • Ankara Etlik Sehir Hastanesi
        • Contact:
          • Yılmaz Türk, Operator Doctor
          • Numéro de téléphone: +905321349903
          • E-mail: yturk9@gmail.com

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte

Accepte les volontaires sains

Non

La description

Inclusion Criteria:

  • Age 18-60 years.
  • Clinical and/or radiological diagnosis of acute appendicitis.
  • Planned laparoscopic appendectomy(Uncomplicated acute appendicitis considered suitable for laparoscopic management).
  • ASA physical status I-III.
  • Written informed consent.

Exclusion Criteria:

  • Age <18 years and >60 years
  • Pregnancy
  • Appendiceal mass or suspected appendiceal malignancy
  • Diffuse peritonitis requiring planned open surgery
  • Severe cardiopulmonary disease in whom pneumoperitoneum pressure cannot be standardized
  • Previous extensive abdominal surgery causing expected severe adhesions
  • Patients requiring additional major abdominal procedure
  • Missing consent
  • Incomplete postoperative follow-up
  • Patients managed non-operatively without surgery

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Seul

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Comparateur actif: 10 mmHg Pneumoperitoneum
Participants assigned to this arm will undergo laparoscopic appendectomy using a pneumoperitoneum pressure of 10 mmHg throughout the procedure. Patients will be allocated using sealed opaque envelope randomization. All other perioperative management and surgical techniques will be standardized.
Procédure: Laparoscopic appendectomy with 10 mmHg pneumoperitoneum
Laparoscopic appendectomy performed using an intra-abdominal pneumoperitoneum pressure of 10 mmHg.
Comparateur actif: 15 mmHg Pneumoperitoneum
Participants assigned to this arm will undergo laparoscopic appendectomy using a pneumoperitoneum pressure of 15 mmHg throughout the procedure. Patients will be allocated using sealed opaque envelope randomization. All other perioperative management and surgical techniques will be standardized.
Procédure: Laparoscopic appendectomy with 15 mmHg pneumoperitoneum
Laparoscopic appendectomy performed using an intra-abdominal pneumoperitoneum pressure of 15 mmHg.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Postoperative pain (Numeric Rating Scale [NRS] 0-10)
Délai: At 6 and 24 hours postoperatively
Postoperative pain will be assessed using the 11-point Numeric Rating Scale (NRS; 0 = no pain, 10 = worst imaginable pain). Pain scores will be compared between the 10 mmHg and 15 mmHg pneumoperitoneum groups.
At 6 and 24 hours postoperatively

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Time to first flatus
Délai: From the end of surgery until first passage of flatus, assessed up to hospital discharge (approximately 7 days)
Time from completion of surgery to the first passage of flatus, recorded in hours
From the end of surgery until first passage of flatus, assessed up to hospital discharge (approximately 7 days)
Length of hospital stay
Délai: From surgery until hospital discharge (up to 30 days)
Duration of hospitalization measured from the end of surgery until hospital discharge
From surgery until hospital discharge (up to 30 days)
Carbon dioxide (CO₂) volume required to achieve target pneumoperitoneum
Délai: At the beginning of surgery
The volume of carbon dioxide required to establish the target pneumoperitoneum pressure (10 mmHg or 15 mmHg) at the beginning of laparoscopic appendectomy will be recorded and compared between groups
At the beginning of surgery
Need for conversion to 15 mmHg pneumoperitoneum
Délai: During surgery
The proportion of participants initially assigned to 10 mmHg pneumoperitoneum who require conversion to 15 mmHg during surgery owing to inadequate operative exposure or technical difficulty.
During surgery
Postoperative ileus
Délai: Within 30 days after surgery
Incidence of postoperative ileus diagnosed according to clinical findings and need for additional management.
Within 30 days after surgery
Intra-abdominal abscess
Délai: Within 30 days after surgery
Incidence of postoperative intra-abdominal abscess confirmed clinically and/or radiologically.
Within 30 days after surgery
Surgical site infection
Délai: Within 30 days after surgery
Incidence of superficial or deep surgical site infection according to CDC criteria
Within 30 days after surgery
Postoperative analgesic consumption
Délai: From the end of surgery until 24 hours after surgery.
Total postoperative analgesic requirement during the hospitalization period.
From the end of surgery until 24 hours after surgery.
Surgical difficulty score
Délai: Immediately after completion of surgery
Surgical difficulty assessed immediately after completion of the procedure by the operating surgeon using a 5-point Likert Surgical Difficulty Scale (1 = very easy, 2 = easy, 3 = moderate, 4 = difficult, 5 = very difficult). Scores range from 1 to 5, with higher scores indicating greater surgical difficulty.
Immediately after completion of surgery
Operation time
Délai: During surgery
Total operative time measured from skin incision to skin closure and compared between the two pneumoperitoneum pressure groups
During surgery
Intraoperative Complications
Délai: During surgery
Incidence of intraoperative complications, including bleeding, bowel injury, vascular injury, or other procedure-related adverse events occurring during laparoscopic appendectomy
During surgery
Emergency department visit after discharge
Délai: Within 30 days after surgery
Number of participants requiring an emergency department visit related to postoperative complications after hospital discharge
Within 30 days after surgery
Reoperation
Délai: Within 30 days after surgery
Number of participants requiring any unplanned surgical reintervention related to postoperative complications
Within 30 days after surgery
postoperative complications
Délai: Within 30 days after surgery
Postoperative complications occurring within 30 days after surgery will be classified according to the Clavien-Dindo classification
Within 30 days after surgery
Leiden Surgical Rating Scale (LSRS)
Délai: Immediately after surgery
Surgical conditions will be evaluated by the operating surgeon using the Leiden Surgical Rating Scale (LSRS), a validated 5-point scale ranging from 1 (extremely poor conditions) to 5 (optimal surgical conditions)
Immediately after surgery

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Ankara Etlik City Hospital

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

  • https://academic.oup.com/gastro/article/doi/10.1093/gastro/goae052/7717317?utm_source=chatgpt.com
  • https://journals.lww.com/njcp/fulltext/2024/06000/low_pressure_versus_standard_pressure.10.aspx?utm_source=chatgpt.com&__cf_chl_f_tk=Eb29rzCFkj3a_dXPqeUg.Gp3YmpTD2NNq9oCDSCAHjo-1783178717-1.0.1.1-uuVgHTnAcUecXo437tA9Setum0rqkaXoaoMcGgklnPQ
  • https://pubmed.ncbi.nlm.nih.gov/20306755/
  • https://pubmed.ncbi.nlm.nih.gov/24503370/
  • https://pubmed.ncbi.nlm.nih.gov/26275545/
  • https://pubmed.ncbi.nlm.nih.gov/32253560/

Liens utiles

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

27 juillet 2026

Achèvement primaire (Estimé)

27 octobre 2026

Achèvement de l'étude (Estimé)

27 octobre 2027

Dates d'inscription aux études

Première soumission

9 juillet 2026

Première soumission répondant aux critères de contrôle qualité

21 juillet 2026

Première publication (Réel)

27 juillet 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

27 juillet 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

21 juillet 2026

Dernière vérification

1 juillet 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • AnkaraEtlikGCYilmazTurk001

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Description du régime IPD

I can give IPD on request after submission of paper

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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