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Diaphragmatic Motion Using Linear Ultrasound

NCT03225508 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 175

Last updated 2024-07-24

No results posted yet for this study

Summary

This study evaluates the movement of the diaphragm (which is the main muscle used for breathing). It will compare two ultrasound modalities: linear ultrasound versus curvilinear ultrasound, at measuring diaphragm motion. The proposed measurement method with linear ultrasound is novel, and will be compared against the established method with curvilinear ultrasound. The investigators hypothesize that the novel method will have several potential advantages, including: it may be easier to learn, quicker to perform, and have a lower failure rate.

Conditions

  • Diaphragm; Movement
  • Examination of Diaphragm Movement Using Ultrasound

Interventions

DIAGNOSTIC_TEST

Linear Ultrasound to Measure Diaphragmatic Movement

A linear 10-12 MHz ultrasound probe will be used to determine diaphragmatic excursion, by examining the zone of apposition. Diaphragmatic excursion will be measured from end inspiration to end expiration. The measurement will be repeated twice, and an average of the two will be taken. The distance between the two external skin markings, one at the end of full expiration and one at the end of full inspiration will indicate the excursion of the diaphragm.

DIAGNOSTIC_TEST

Curvilinear Ultrasound to Measure Diaphragmatic Movement

A curvilinear 2-5 MHz ultrasound probe will be used to determine diaphragmatic excursion, by examining the dome of the diaphragm. M-mode will be used to image the motion of the diaphragm from end inspiration to end expiration. The measurement will be repeated twice, and an average of the two will be taken.

DIAGNOSTIC_TEST

Pulmonary function tests

Bedside pulmonary function tests to measure forced vital capacity (FVC). The FVC measures the maximal volume of gas that can be expired as forcefully and rapidly as possible after a maximal inspiration to total lung capacity. This measurement will help determine if the patient has any obstructive or restrictive diseases of the airways. Three measurements will be taken.

Sponsors & Collaborators

  • University Health Network, Toronto

    lead OTHER

Principal Investigators

  • Anahi Perlas, MD · University Health Network, Toronto

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2017-06-09
Primary Completion
2024-05-23
Completion
2024-05-23

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03225508 on ClinicalTrials.gov