Reliability of Diaphragm Ultrasound: Intra- and Interrater Analysis

Starting soon

Conditions studied: Diaphragm Issues

In brief

It is often difficult for anesthesiologists to select an ultrasound method that will give consistent results and also be a reliable way to examine the diaphragm, especially on the left side of the chest. In this study, two anesthesiologists blinded to one another's scan results, will perform ultrasound scan of the diaphragm using three different methods and the measurements will be analyzed to see the reliability of each method.

Key facts

Study ID

NCT07747532

Run by

University Health Network, Toronto

People needed

58

Starts

2026-08-01

Expected to finish

2028-07-01

Last updated by the study team

2026-08-05

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Participants must meet all the following inclusion criteria to be eligible for the study:
• Any elective surgical patient
• Age ≥18 years
• American Society of Anesthesiologists class I to III

You may not qualify if…

• Participants will not be eligible for the study if any of the exclusion criteria is present:
• Pregnancy - patients will be asked if they are pregnant or not and screened post-consent from their medical chart.
• History of diaphragmatic dysfunction
• Previous surgical procedures on the lung, thorax or diaphragm.
• Inability to understand the study activities and provide informed consent when explained about the study and the consent process
• Refusal to participate in study

Where it is running

• Toronto Western Hospital, University Health Network — Toronto, Ontario, Canada

Full record on ClinicalTrials.gov

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