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CompletedNCT01939301Updated Oct 3, 2018Results posted

Nitric Oxide to Treat Pulmonary Embolism

A Phase 2 interventional study of Inhaled Nitric Oxide and Sham in Pulmonary Embolism, sponsored by Indiana University School of Medicine. Completed at 4 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-10-03.

Sponsored by Indiana University School of Medicine · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
78
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a randomized study to treat subjects diagnosed with pulmonary embolism with inhaled nitric oxide or placebo (oxygen).

Read the detailed description

This is a randomized, double blind study to treat subjects diagnosed with pulmonary embolism with inhaled nitrix oxide. In this clinical trial investigators will randomized patients to receive inhaled nitric oxide or sham (nitrogen + oxygen) for 24 hours. Patients must have a submassive pulmonary embolism (PE) and evidence of right ventricular (RV) heart dysfunction. Investigators hypothesize that the administration of inhaled NO + oxygen to patients with severe submassive PE will improve RV function, reduce RV strain and necrosis and improve dyspnea (difficulty breathing) more than sham oxygen treatment.

02

Conditions studied

  • Pulmonary Embolism

Keywords

  • Pulmonary embolism clot
03

In context

Pulmonary Embolism

739 studies on the registry are indexed under Pulmonary Embolism; 159 are open to participants now.

This study's enrollment of 78 is below the median of 150 across 381 interventional studies indexed under Pulmonary Embolism.

Browse Pulmonary Embolism studies →

Lead sponsor

Indiana University School of Medicine is the lead sponsor of 89 studies on the registry; none are open to participants now.

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

Inclusion criteria

  • Age >/= 18
  • Pulmonary imaging-proven PE, as interpreted by local radiologist
  • At least one predictor of RV dysfunction:

    1. echocardiography with RV dilation or hypokinesis,
    2. estimated RVSP >40mm HG,
    3. RV>LV on CTPA,
    4. elevated troponin I (>0.1 ng/mL) or natriuretic peptide (BNP > 90 pg/mL),
    5. screening bedside cardiac ultrasound with color flow capability that shows RV dysfunction,
    6. RV strain on ECG
  • Plan to admit to a bed with telemetry capability

Exclusion criteria

Exclusion Criteria:

  • Vasopressor support at time of enrollment
  • Pregnancy
  • Plan by clinical care team to use lytic or surgical embolectomy
  • Plan by clinical team to use platelet inhibiting drugs
  • Contraindication to anticoagulation
  • Altered mental status such that the patient is unable to provide informed consent
  • Inability to use a nasal cannula or face mask
  • Comfort care measures instituted
  • Supplemental oxygen requirements greater than can be administered via nasal cannula in order to maintain Sa)2 > 80%
  • Pneumothorax with decompression
  • Serum MetHb > 10%
  • Recent use of drugs known to increase cGMP
  • Use of nitroprusside or nitroglycerin within the last 4 hours
  • Use of any other nitrates with in the past 24 hours
  • Use of a fibrinolytic medicine within the past 14 days
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Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
78 participants (actual)

Study arms

  • Active comparator
    Inhaled Nitric Oxide

    Inhaled nitric oxide

    Drug: Inhaled Nitric Oxide

  • Placebo comparator
    Placebo

    Oxygen

    Drug: Sham

Interventions

  • DrugInhaled Nitric Oxide

    Nitric Oxide + oxygen

  • DrugSham

    Nitrogen + Oxygen

    Also known as: placebo, oxygen

06

What researchers measure

Primary outcomes

  1. Number of Participants With Normal Right Ventricular (RV) Function and Viability

    Right ventricular (RV) function and viability assessed by the composite of normal RV size (\<42 mm in diastole) and tricuspid annular plane systolic excursion (TAPSE) \> 16 mm and normal right ventricular index of myocardial performance (RIMP) \< 0.40 using spectral Doppler or \< 0.55 using tissue Doppler) and normal fractional area change (FAC) (\> 33%) and a serum hsTnT \< 14pg/mL. Missing values will be considered normal.

    Time frame: 5 days or hospital discharge (whichever occurs first)

07

Results

Posted Mar 29, 2018

Participant flow

Participant flow — Overall Study
MilestoneInhaled Nitric OxideSham
Started3939
Completed3838
Not completed11

Outcome measures

PrimaryNumber of Participants With Normal Right Ventricular (RV) Function and Viability

Right ventricular (RV) function and viability assessed by the composite of normal RV size (\<42 mm in diastole) and tricuspid annular plane systolic excursion (TAPSE) \> 16 mm and normal right ventricular index of myocardial performance (RIMP) \< 0.40 using spectral Doppler or \< 0.55 using tissue Doppler) and normal fractional area change (FAC) (\> 33%) and a serum hsTnT \< 14pg/mL. Missing values will be considered normal.

Time frame:
5 days or hospital discharge (whichever occurs first)
Reported as:
Count of participants · Participants
Number of Participants With Normal Right Ventricular (RV) Function and Viability
ParticipantsInhaled Nitric OxideSham
Number of Participants With Normal Right Ventricular (RV) Function and Viability95

Adverse events

Collected over 28 days. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Inhaled Nitric Oxide2/38 (5.3%)2/38 (5.3%)12/38 (31.6%)
Sham2/38 (5.3%)2/38 (5.3%)11/38 (28.9%)
Most frequent serious events
Most frequent serious events
EventInhaled Nitric OxideSham
deathRespiratory, thoracic and mediastinal disorders2/382/38
Most frequent other events
Most frequent other events
EventInhaled Nitric OxideSham
arrhythmiaCardiac disorders12/3811/38

Baseline characteristics

Age, Continuous
Age, Continuous(years)Inhaled Nitric OxideShamTotal
Mean55 ± 1559 ± 1657 ± 15
Sex: Female, Male
Sex: Female, Male(Participants)Inhaled Nitric OxideShamTotal
Female212041
Male181937
Region of Enrollment
Region of Enrollment(Participants)Inhaled Nitric OxideShamTotal
United States393978
08

Study locations

4 sites
  • Eskenazi Hospital
    Indianapolis, Indiana 46202, United States
  • Indiana University Hospital
    Indianapolis, Indiana 46202, United States
  • Methodist Hospital
    Indianapolis, Indiana 46202, United States
  • University of Mississippi
    Jackson, Mississippi 36216, United States
09

References and documents

Publications

  • Kline JA, Puskarich MA, Jones AE, Mastouri RA, Hall CL, Perkins A, Gundert EE, Lahm T. Inhaled nitric oxide to treat intermediate risk pulmonary embolism: A multicenter randomized controlled trial. Nitric Oxide. 2019 Mar 1;84:60-68. doi: 10.1016/j.niox.2019.01.006. Epub 2019 Jan 8. PubMed 30633959 ↗
  • Kline JA, Hall CL, Jones AE, Puskarich MA, Mastouri RA, Lahm T. Randomized trial of inhaled nitric oxide to treat acute pulmonary embolism: The iNOPE trial. Am Heart J. 2017 Apr;186:100-110. doi: 10.1016/j.ahj.2017.01.011. Epub 2017 Jan 27. PubMed 28454823 ↗
10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 3, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01939301
Lead sponsor
Indiana University School of Medicine
Collaborators
Mallinckrodt, National Institutes of Health (NIH), University of Mississippi Medical Center, University of Texas, Southwestern Medical Center at Dallas, National Heart, Lung, and Blood Institute (NHLBI)
Responsible party
Jeffrey Kline (Vice Chair of Research, Indiana University School of Medicine) — Principal investigator
First posted
Sep 11, 2013
Start date
Oct 2013
Primary completion
Oct 31, 2016
Completion
Oct 31, 2016
Results posted
Mar 29, 2018
Last update
Oct 3, 2018

Study contacts

Jeff A Kline, MD
principal investigator · Indiana University

Oversight

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

Not currently enrolling

This study is completed, as verified in Sep 2018. You cannot join it, but the record below documents what was studied.

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