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Status unknownNCT01339533Updated Aug 26, 2015

Airway Pressure Release Ventilation (APRV) Versus AC/VC Conventional Ventilation

A Phase 2 interventional study of Mechanical Ventilation in Respiratory Failure, Acute Lung Injury (ALI) and Acute Respiratory Distress Syndrome (ARDS), sponsored by Intermountain Health Care, Inc.. Status unknown at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-08-26.

Sponsored by Intermountain Health Care, Inc. · Phase 2, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Aug 2015), so the status shown — last known as Recruiting — may be out of date.
Phase
Phase 2
Study type
Interventional
Enrollment
246
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

APRV mode of ventilation will result in an improved partial pressure of arterial oxygenation/ fraction of inspired oxygen (P/F ratio) on day 3 of mechanical ventilation. Sub hypotheses: APRV will be associated with a reduced amount of sedation used during the ICU stay in patients with respiratory failure. APRV will be associated with a reduction in the amount of vasoactive medication used for blood pressure support in patients with respiratory failure.

Read the detailed description

This prospective un-blinded randomized trial will follow patients with respiratory failure and ALI/ARDS who require invasive mechanical ventilation in select ICUs. Patients will be allocated to respiratory support with either APRV mode or volume control (AC) mode of mechanical ventilation. Qualifying patients will be randomized by permuted block randomization within 24 hours of admission to the ICU. Identical ventilation and oxygenation thresholds will be utilized to guide titration of each ventilator protocol. Patients will remain on the assigned mode of ventilation until they are extubated and discharged from the ICU.

Procedures for treatment evaluation include daily monitoring of the Ventilator protocol in each arm. Clinical coordinator and study respiratory therapist will perform 2 daily checks of the study patients to determine compliance with the protocol and if patient meets weaning criteria. The previously published ARDS Network continuous positive airway pressure (CPAP) weaning protocol will be used for all patients enrolled.

02

Conditions studied

  • Respiratory Failure
  • Acute Lung Injury (ALI)
  • Acute Respiratory Distress Syndrome (ARDS)

Keywords

  • ALI
  • ARDS
03

In context

Respiratory Insufficiency

1,675 studies on the registry are indexed under Respiratory Insufficiency; 300 are open to participants now.

This study's planned enrollment of 246 is above the median of 55 across 1,056 interventional studies indexed under Respiratory Insufficiency.

Browse Respiratory Insufficiency studies →

Lead sponsor

Intermountain Health Care, Inc. is the lead sponsor of 120 studies on the registry; 15 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 3 (33%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Hypoxemic respiratory failure requiring mechanical ventilation for >24 hours.

Exclusion criteria

Exclusion Criteria:

  • Age under 18
  • Severe chronic obstructive lung disease
  • Patients in whom the only indication for mechanical ventilation is airway protection from poor neurological status.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
246 participants (estimated)

Study arms

  • Experimental
    APRV ls

    APRV low stretch will titrate Plow to maintain release volumes between 4 and 8 cc/kg.

    Device: Mechanical Ventilation

  • Active comparator
    AC/VC Conventional Ventilation

    Standard volume control ventilation with the ARDS Net protocol.

    Device: Mechanical Ventilation

  • Experimental
    APRV h

    APRV Habashi protocol which sets Plow equal to 0.

    Device: Mechanical Ventilation

Interventions

  • DeviceMechanical Ventilation

    Patients who experience problems breathing and require assistance in breathing are placed on a machine that delivers air to the lungs through a tube through the vocal cords. This study is testing 3 protocols for that machine.

06

What researchers measure

Primary outcomes

  1. P/F Ratio on Day 3 of Mechanical Ventilation

    Our first objective is to measure and compare the partial pressure of oxygen in the artery to the inspired oxygen ratio (P/F ratio) on day 3 of mechanical ventilation. We will also collect and compare common variables used to evaluate lung injury and severity of respiratory failure in both groups. These variables and markers include: the Oxygenation index (OI) and standard blood gas parameters (PH, PaCO2 and PaO2).

    Time frame: Day 3

Secondary outcomes

  1. Amount/Duration of Sedative & Vasoactive Medication

    Our second objective is to compare the amount and duration of sedative medication and vasoactive medication per patient per/day required in each group. Duration of vasoactive medications and sedation (# of days) and quantitative amounts per kilogram will be compared. Measurements will include Mean Arterial Blood Pressure (MAP), Central venous pressure (CVP), and daily fluid balance between patients on AC and APRV.

    Time frame: Up to ICU discharge

  2. Evaluate Feasibility & Clinical Compliance with 2 APRV Paper Protocols.

    Our third objective is to evaluate the feasibility of 2 previously developed APRV paper protocols (APRVa and APRVb) and document the clinician compliance with each paper APRV protocol. We will also track common events associated with mechanical ventilation. The incidence of pneumothorax defined as any ventilator-barotrauma resulting in chest tube placement, will be carefully followed.

    Time frame: Up to ICU discharge

07

Study locations

2 of 2 sites recruiting
  • Intermountain Medical Center
    Murray, Utah 84157, United States
    • Eliotte Hirshberg, MD · Principal investigator
    Recruiting
  • LDS Hospital
    Salt Lake City, Utah 84143, United States
    • Terry Clemmer, MD · Sub investigator
    Recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 26, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01339533
Responsible party
Eliotte L. Hirshberg (Principal Investigator, Intermountain Health Care, Inc.) — Principal investigator
First posted
Apr 20, 2011
Start date
Oct 2011
Primary completion
Dec 2015 (estimated)
Completion
Jun 2016 (estimated)
Last update
Aug 26, 2015

Study contacts

Eliotte Hirshberg, MD
Contact
ellie.hirshberg@imail.org
801-232-9120
Eliotte Hirshberg, MD
principal investigator · IHC Health Services, Inc., Dba: Intermountain Medical Center

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Aug 2015. You cannot join it, but the record below documents what was studied.

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