STimulation to Activate RespIration

Phase 2

Recruiting

• Conditions: ARDS (Moderate or Severe); AHRF; Mechanically Ventilated ICU Patients

• Registration Number: NCT06832306
• Lead Sponsor: Lungpacer Medical Inc.

Brief Summary

Multi-center, randomized, controlled, open-label Phase 2 feasibility trial. Subjects on mechanical ventilation (MV) for acute hypoxemic respiratory failure (AHRF) with lung injury (including subjects who meet criteria for acute respiratory distress syndrome (ARDS)) will be randomized 2:1 to diaphragm neurostimulation-assisted ventilation (DNAV) using the AeroNova System plus lung-protective ventilation (Treatment) vs. lung-protective ventilation alone (Control).

Detailed Description

Not available

Study Timeline

• Status Verified: 2025-02
• Study First Submitted: 2025-02-06
• Study First Submitted QC: 2025-02-14
• Study First Posted: 2025-02-18
• Study Start: 2025-02-28
• Last Update Submitted: 2025-05-13
• Last Update Posted: 2025-05-16
• Primary Completion: 2026-06
• Study Completion: 2026-12

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

1. Male or female, 18 years or older, and

2. Able to provide informed consent or have a legally authorized representative (LAR) / Substitute Decision Maker (SDM) who can provide consent, and

3. Have acute onset of new respiratory symptoms or dysfunction within the 2 weeks before onset of need for respiratory support, and

4. Have moderate-to-severe arterial hypoxemia defined by one of:

   • PaO2:FiO2 ratio <≤200 mm Hg on PEEP ≥ 5 cm H2O, or
   • In the absence of an available arterial blood gas, SpO2 ≤97% on FiO2 ≥0.5 and PEEP ≥5 cm H2O with reliable SpO2 trace for the 2 hours immediately preceding eligibility assessment (this correlates to an upper limit of SpO2:FiO2 ratio of 235%) or
   • Are receiving inhaled nitric oxide for acute hypoxemia, or
   • Are being ventilated in the prone position for acute hypoxemia, and

5. Have been mechanically ventilated for AHRF in the current ICU for <72 hours at the time of enrolment, and

6. Are expected to require invasive mechanical ventilation ≥ 48 hours after enrollment in the opinion of the treating clinician, and

7. Have not spontaneously triggered the ventilator for the previous 2 hours and there is no immediate plan to transition to assisted ventilation.

Exclusion Criteria

1. Hypoxemia is primarily attributable to acute exacerbation of chronic obstructive pulmonary disease, status asthmaticus, or pulmonary embolism.
2. Underlying chronic parenchymal lung disease that may make recovery/extubation a challenge (e.g., COPD, pulmonary fibrosis).
3. Broncho-pleural fistula at the time of eligibility assessment.
4. Severe hemodynamic instability (requiring norepinephrine or epinephrine > 0.5 mcg/kg/min)
5. Require extracorporeal membrane oxygenation.
6. Pre-existing neurological, neuromuscular or muscular disorder or known phrenic nerve injury that could affect the respiratory muscles.
7. BMI >70 kg/m2.
8. Contraindications to left internal jugular vein or left subclavian vein catheterization (e.g., infection at the access site, known central venous stenosis, septic thrombophlebitis, left internal jugular ECMO cannula in situ, poor target vessels).
9. Patient expected to transition to fully palliative care within 72 hours of enrollment.
10. Severe liver disease (Child-Pugh Score ≥10)
11. Treating clinician deems enrollment not clinically appropriate.
12. Currently enrolled in any other study of an investigational drug or device, which may affect the outcomes of the current study.
13. Any electrical device (implanted or external) that may be prone to interaction with or interference from the AeroNova System, including neurological pacing/stimulator devices and cardiac pacemakers and defibrillators.
14. Known or suspected to be pregnant or lactating.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Successful device insertion, mapping, and initiation of stimulation within 18 hours of meeting readiness-to-stimulate criteria	Within 18 hours of meeting readiness to stimulate criteria
Stimulation delivered on >50% of controlled ventilation breaths (ascertained from continuous recordings stored in the Console)	30 days
Rehabilitation sessions delivered at least once per day on >50% of days when the patient was in assisted ventilation for at least 12 hours	30 days

Secondary Outcome Measures

Name	Time	Method
30 days	30 days
Unanticipated serious adverse device events (USADE) and incidence of device- or procedure-related SAEs in the Treatment group	30 days

Trial Locations

Locations (3)

University Health Network (UHN); 🇨🇦 Toronto, Ontario, Canada

Louisiana State University Health Sciences; 🇺🇸 Shreveport, Louisiana, United States

Prisma Health; 🇺🇸 Columbia, South Carolina, United States