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CompletedNCT03524573DELAYUpdated Nov 18, 2023

(D)Elayed vs. (E)Arly (L)Aparoscopic (A)Ppendectom(Y)

An interventional study of Appendectomy in Appendicitis, sponsored by Kingston Health Sciences Centre. Completed at 1 site in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-11-18.

Sponsored by Kingston Health Sciences Centre · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
127
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The DELAY Trial will compare immediate (\< 6 hours from decision to operate) to delayed (Surgery to take place the following morning) appendectomy in adult patients presenting to the emergency department with suspected acute appendicitis. The primary outcome will be 30 day postoperative complications.

Read the detailed description

This randomized controlled trial is designed to assess the effect of timing of surgery on surgical complications in patients undergoing appendectomy for acute appendicitis at one of two participating institutions.

Early appendectomy in patients diagnosed with acute appendicitis has been a mainstay of treatment. Timely intervention is recommended to avoid the risks associated with perforated appendicitis, which has been shown to increase the risk of post-operative complications compared to non-perforated appendicitis. However, some studies have suggested that delaying appendectomy does not increase complications. Several studies have also assessed the safety of nighttime operating with conflicting results. Some suggest that delaying surgery until daytime is safe.

This study is a prospective, randomized controlled trial with blinding of the outcome assessors. Eligible participants will be adult patients diagnosed with acute appendicitis with an expected operative start time between 2000-0400. Patients randomized to the intervention group will have delayed surgery after 0530 the following morning to avoid nighttime operating. Patients randomized to the control group will receive immediate surgery within 6 hours of the decision to operate. The follow up period will be a minimum of 30 days. Independent outcome assessors will assess patients during their postoperative course in hospital as well as in the outpatient follow up clinic.

The primary outcome for this study is complication occurring within 30 days of surgery. Complication includes any of the following: mortality, readmission to hospital, emergency department (ED) visit, percutaneous drain insertion, reoperation, prolonged hospital stay greater than 7 days, and a predefined list of postoperative complications. Secondary outcomes include perforated appendicitis, operative time, and length of stay.

02

Conditions studied

  • Appendicitis

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03

In context

Appendicitis

412 studies on the registry are indexed under Appendicitis; 62 are open to participants now.

This study's enrollment of 127 is above the median of 111 across 246 interventional studies indexed under Appendicitis.

Browse Appendicitis studies →

Lead sponsor

Kingston Health Sciences Centre is the lead sponsor of 11 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adult patients ≥ 18 years of age
  • Imaging confirmed diagnosis of appendicitis (ultrasound or CT or MRI)
  • Expected time of operation between 2200 - 0400 and occurs within 6 hours of the decision to operate

Exclusion criteria

Exclusion Criteria:

  • Patients with hemodynamic instability
  • Patients with suspected sepsis
  • Unknown diagnosis
  • Presence of abscess on CT Scan
  • Diagnosis of missed appendicitis
  • Pregnancy
  • Patients who are not surgical candidates
  • Patients who are not competent to sign consent
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
127 participants (actual)

Study arms

  • Experimental
    Delayed Appendectomy

    Patients will undergo appendectomy the morning following the decision to operate. This group will have an anticipated delay between 3 - 14 hours from the decision to operate, with a surgical start time between 0530 - 0900.

    Procedure: Appendectomy

  • Active comparator
    Immediate Appendectomy

    Patients will undergo appendectomy within 6 hours of the decision to operate. Surgery will take place between 2000 - 0400.

    Procedure: Appendectomy

Interventions

  • ProcedureAppendectomy

    Appendectomy is the surgical removal of the appendix.

06

What researchers measure

Primary outcomes

  1. 30 Day Post Operative Complications

    Time frame: within 30 days of surgery

Secondary outcomes

  1. Perforated Appendicitis

    Time frame: At time of surgery

  2. Operative Time

    Time frame: At time of surgery

  3. Length of Stay - Index Admission

    Time frame: Index Admission

  4. Length of Stay - Index admission plus any additional admissions within 30 days of surgery

    Time frame: 30 Days

07

Study locations

1 site
  • Kingston Health Sciences Centre
    Kingston, Ontario K7L 5G2, Canada
08

References and documents

Publications

  • Patel SV, Zhang L, Mir ZM, Lemke M, Leeper WR, Allen LJ, Walser E, Vogt K. Delayed Versus Early Laparoscopic Appendectomy for Adult Patients With Acute Appendicitis: A Randomized Controlled Trial. Ann Surg. 2024 Jan 1;279(1):88-93. doi: 10.1097/SLA.0000000000005996. Epub 2023 Jul 13. PubMed 37436871 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 18, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03524573
Lead sponsor
Kingston Health Sciences Centre
Collaborators
London Health Sciences Centre
Responsible party
Sunil Patel (Associate Professor, Kingston Health Sciences Centre) — Principal investigator
First posted
May 15, 2018
Start date
Nov 5, 2018
Primary completion
Mar 30, 2023
Completion
Mar 30, 2023
Last update
Nov 18, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

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