Evaluating ventilatory parameters to predict outcomes in ARDS patients

Occlusion Pressure at 100 Msec, TCe ( Expiratory Time Constant ), Stress Energy Density, Mechanical Power, Ventilatory Ratio and C20/Cdyn in Predicting Outcomes in Patients With Moderately Severe ARDS, Who Are on Mechanical Ventilation

Observational CentraCare · NCT06400095

This study is testing whether certain breathing measurements can help predict how well patients with moderate Acute Respiratory Distress Syndrome (ARDS) will do while on a ventilator.

Quick facts

Study typeObservational
Enrollment50 (estimated)
Ages19 Years to 80 Years
SexAll
SponsorCentraCare Academic / other
Locations1 site (Saint Cloud, Minnesota)
Trial IDNCT06400095 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess whether specific ventilatory parameters, such as occlusion pressure and expiratory time constant, can predict outcomes in patients with moderately severe Acute Respiratory Distress Syndrome (ARDS) who are on mechanical ventilation. The study will analyze the relationship between mechanical power, driving pressure, and patient outcomes, focusing on the risks of ventilation-induced lung injury. By monitoring these parameters, the researchers hope to improve understanding of how mechanical ventilation affects ARDS patients and potentially guide treatment strategies.

Who should consider this trial

Good fit: Ideal candidates for this study are patients diagnosed with severe ARDS requiring mechanical ventilation and exhibiting a PF ratio of less than 150.

Not a fit: Patients with conditions such as COPD, pulmonary fibrosis, or those requiring ECMO may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved prediction of outcomes for ARDS patients on mechanical ventilation, potentially enhancing patient management and care.

How similar studies have performed: Other studies have indicated that mechanical power and driving pressure can predict mortality in ARDS patients, suggesting this approach has a foundation in previous research.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with Acute respiratory failure needing mechanical ventilation
* Diagnosis of Severe ARDS with severity: PF ratio \< 150, with PEEP/CPAP \> 5

Exclusion Criteria:

* r2 \< 0.95, monitored on the ventilator
* Expiratory flow that is not first-order or non-exponential decay
* Patients with Nor-epinephrine requirements \> 0.1 mcg/kg/min within 2 hours of intubation
* Patients requiring ECMO ( Extracorporeal membrane oxygenation)
* Patients with COPD or pulmonary fibrosis with a premorbid FEV1 \< 1.5 L
* Severe atherosclerotic vascular disease
* Patients with a chest tube, intra-abdominal hypertension or with its risk factors
* Patients with structural heart disease including pulmonary hypertension (RVSP \> 45) and heart failure
* All comfort care orders in the ICU
* Patients who underwent tracheostomy

Where this trial is running

Saint Cloud, Minnesota

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions ARDSMechanical PowerExpiratory time constantVentilator ratioCdyn/C20Occlusion pressure at 100 msec
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.