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The Accuracy of Combined Parasternal Intercostal Muscle Thickening Fraction and Diaphragmatic Excursion in Predicting Failure of Libration From Mechanical Ventilation

NCT07702422 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 70

Last updated 2026-08-03

No results posted yet for this study

Summary

Approximately 20% of patients in the intensive care unit (ICU) requiring mechanical ventilation (MV) experience difficulty and prolonged weaning. Early spontaneous breathing trials (SBT) and timely extubation are essential to avoid complications such as diaphragmatic dysfunction, ventilator-associated pneumonia, and airway trauma.

Mechanical ventilation is a vital supportive therapy in critical care. However, both delayed weaning and premature discontinuation are associated with poor outcomes and prolonged ICU stay. Prolonged MV may lead to complications including respiratory muscle dysfunction, ventilator-associated lung injury, and increased healthcare costs, emphasizing the importance of optimal timing of weaning.

Ultrasonography (US) has emerged as a rapid, non-invasive bedside tool for real-time assessment of respiratory muscle function. It allows evaluation of muscle thickness and contractility, aiding in the detection of diaphragmatic dysfunction.

In cases of diaphragmatic impairment, accessory respiratory muscles, particularly the parasternal intercostal muscles, play a compensatory role. Measurement of parasternal intercostal muscle thickness fraction (PICTF%) has been proposed as a predictor of weaning failure.

Additionally, composite indices such as the rapid shallow breathing index (RSBI) and compliance, rate, oxygenation, and pressure (CROP) index are widely used to assess weaning readiness. A recently proposed composite index combining PICTF (\>9%) and diaphragmatic excursion (\<15 mm) demonstrated high predictive value for failure of non-invasive ventilation.

Therefore, the present study aims to evaluate the effectiveness of this novel composite index in predicting weaning failure in mechanically ventilated patients.

Conditions

  • Liberation From Mechanical Ventilation

Sponsors & Collaborators

  • Cairo University

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-08-31
Primary Completion
2027-01-31
Completion
2027-06-30

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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 NCT07702422 on ClinicalTrials.gov