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Pre-surgery breathing workouts cut post-op complications, study finds

NCT ID NCT04558151

Disease control Sponsor: University of Zurich Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether doing special breathing exercises before abdominal surgery could lower the number and severity of complications after the operation. 134 adults scheduled for major belly surgery took part. They practiced breathing with a device to strengthen their breathing muscles before their operation. The goal was to see if this pre-surgery training leads to fewer and less serious problems after surgery.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

134 people

The number who actually took part.

Started

Aug 2021

Finished

Oct 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Informed Consent as documented by signature (Appendix Patient Informed Consent Form) * Planned abdominal surgery with planned duration \>2hours (disease localization: upper vs. lower gastro intestinal, HPB, hernia, others) * Planned surgery at least two weeks after inclusion at outpatient clinic * Male and female patient over 18 years Exclusion Criteria: * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, of the participant * Known or suspected non-compliance, drug or alcohol abuse, * Previous enrolment into the current study * Participation in another study with inspiratory muscle training within 30 days preceding or during this study

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Conditions

The condition(s) this trial relates to.

Postoperative Complications

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Breathing exercises Postoperative complications Preoperative period

Contacts and locations

Locations

  • University Hospital Zurich

    Zurich, Switzerland

More trials for these conditions

Other studies related to the condition(s) this trial covers.