NCT01622322

Brief Summary

To compare postoperative pain, opioid consumption and chronic pain in patients undergoing to hernia repair surgery after receiving nitrous oxide or oxygen during the general anesthesia.

Trial Health

30
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Timeline
Completed

Started May 2012

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2012

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

June 15, 2012

Completed
4 days until next milestone

First Posted

Study publicly available on registry

June 19, 2012

Completed
11.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2023

Completed
Last Updated

November 15, 2023

Status Verified

November 1, 2023

Enrollment Period

11.6 years

First QC Date

June 15, 2012

Last Update Submit

November 13, 2023

Conditions

Outcome Measures

Primary Outcomes (2)

  • Nitrous oxide and chronic pain

    The effect of 70% N20/30% O2 on post inguinal hernia repair procedure in prevention of chronic pain.

    30 days post operative

  • Nitrous oxide and opioid consumption

    The effect of 70% N20/30% O2 on post inguinal hernia repair procedure in decrease in opioid consumption.

    4 hours after surgery

Secondary Outcomes (2)

  • smoking and post operative pain

    4 hours after surgery

  • smoking and chronic pain

    30 days post operative

Study Arms (2)

Nitrous oxide

EXPERIMENTAL

Subjects will receive General anesthesia with Nitrous Oxide.

Drug: Nitrous Oxide

Oxygen

PLACEBO COMPARATOR

Subjects will receive General anesthesia with oxygen.

Other: oxygen

Interventions

Nitrous Oxide, 70%, O2 30%) 1-5 L, Sevoflurane 1-2%, ETCO2: 32-35 mmHg.

Nitrous oxide
oxygenOTHER

Subjects will receive General anesthesia: (Air, 70%, O2 30%) 1-5 L, Sevoflurane 1-2%, ETCO2: 32-35 mmHg.

Oxygen

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • to 65 years old at time of the first procedure
  • American Society of Anesthesiologists physical status I or II
  • Inguinal hernia repair surgery undergoing the general anesthesia

You may not qualify if:

  • Neuropathic disease
  • Chronic opioid users
  • Contraindication for Nitrous Oxide receive
  • Consent will not be obtained patient
  • Psychiatric disorders
  • Current or recent drug abuse (within past 6 months).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Gulhane Military Medical Academy Hospital

Etlik, Ankara, 06018, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Pain, Postoperative

Interventions

Nitrous OxideOxygen

Condition Hierarchy (Ancestors)

Postoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsPainNeurologic ManifestationsSigns and Symptoms

Intervention Hierarchy (Ancestors)

Nitrogen OxidesGasesInorganic ChemicalsNitrogen CompoundsOxidesOxygen CompoundsChalcogensElements

Study Officials

  • Alparslan Turan, M.D.

    The Cleveland Clinic

    PRINCIPAL INVESTIGATOR
0

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
PI

Study Record Dates

First Submitted

June 15, 2012

First Posted

June 19, 2012

Study Start

May 1, 2012

Primary Completion

December 1, 2023

Study Completion

December 1, 2023

Last Updated

November 15, 2023

Record last verified: 2023-11

Locations