Prolonged use of HME filters in ICU patients

Safety and Efficiency of the Prolonged (72-hour) Use of a Single Heat and Moisture Exchanger in Adult Mechanically Ventilated Critically Ill and Its Impact on the Lower Respiratory Tract Pathogenic Microbial Colonisation Rate (FILTRex Trial); a Single-centre, Randomised, Controlled Trial

Not applicable Interventional Charles University, Czech Republic · NCT06410664

This study is testing if using special filters for 72 hours instead of 24 hours can help prevent lung infections in ICU patients on ventilators while keeping them comfortable.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment120 (estimated)
Ages18 Years and up
SexAll
SponsorCharles University, Czech Republic Academic / other
Locations1 site (Prague, Česká Republika)
Trial IDNCT06410664 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the efficiency and safety of using Heat and Moisture Exchange (HME) filters for 72 hours compared to the standard 24-hour exchange in adult patients on mechanical ventilation in the ICU. The study aims to reduce the risk of ventilator-associated pneumonia (VAP) by minimizing the manipulation of the ventilator circuit while ensuring adequate humidification and airflow. It is a single-centre, controlled, randomised, prospective trial that will assess the incidence of HME-related adverse events and microbial colonization in the lungs. The outcomes will help determine if prolonged use of HME filters is a safe and effective strategy in critically ill patients.

Who should consider this trial

Good fit: Ideal candidates are adult ICU patients who are expected to be mechanically ventilated for more than 72 hours.

Not a fit: Patients with suspected pulmonary infections or those requiring immediate treatment withdrawal may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the incidence of ventilator-associated pneumonia and improve patient outcomes in the ICU.

How similar studies have performed: While there have been studies on HME filters, this specific approach of prolonged use is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age ≥18 years
2. In-patient in ICU and expected to stay \> 3 days
3. Mechanical ventilation or imminent need of it; predicted length of mechanical ventilation ≥ 72h
4. Clinical Pulmonary Infection score (CPIS) less than six at the baseline 5 No history and symptoms of aspiration at the baseline

Exclusion Criteria:

1. Suspected pulmonary infection on admission and in the first 48 hours of mechanical ventilation
2. Pregnancy
3. Acute respiratory distress syndrome
4. Body temperature \< 32°C
5. Airway bleeding or other contraindications for the use of HME
6. An early decision of treatment withdrawal

Where this trial is running

Prague, Česká Republika

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 VAP - Ventilator Associated PneumoniapneumoniaHeat and Moisture Exchange filterVAP bundle in ICUendotracheal tube occlusion
Last reviewed 2026-06-13 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.