CClinicalTrials.gg
CompletedNCT02943941APVSUpdated Apr 12, 2019Results posted

Pressure Variability Study

An interventional study of Reveal LINQ ICM Cardiac Monitor, taped on the subject's chest rather than inserted in the body. in Heart Failure, sponsored by Medtronic Cardiac Rhythm and Heart Failure. Completed at 2 sites in United States. Per ClinicalTrials.gov, last updated 2019-04-12.

Sponsored by Medtronic Cardiac Rhythm and Heart Failure · Not applicable, Interventional, and Basic science

Phase
Not applicable
Study type
Interventional
Enrollment
16
Allocation
Not applicable
Sex
All
01

Study summary

The purpose of this study is to understand how the pressure in the pulmonary artery changes under different conditions of posture, respiration and exertion.

Read the detailed description

This is a prospective, multi-center, observational study with enrollment up to 30 subjects at 2 U.S. sites. All study data can be collected on a single day as a one-time visit (lasting approximately 90-120 minutes).

This study is a Non-Significant Risk (NSR) Investigational Device Exemption (IDE) study as LINQ™ HF investigational RAMware is required to activate additional sensors in the Reveal LINQ ICM.

The patient will come to the clinic for a single in-office visit. PA pressure will be measured while the patient is in a variety of positions and during different respiratory exercises and after brief exertion. Data will be collected on eCRFs.

The effects of the different postures, respiration and exertion will be quantified using descriptive statistics (mean, standard deviation).

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Conditions studied

  • Heart Failure

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03

In context

Heart Failure

5,701 studies on the registry are indexed under Heart Failure; 1,220 are open to participants now.

This study's enrollment of 16 is below the median of 72 across 3,736 interventional studies indexed under Heart Failure.

Browse Heart Failure studies →

Lead sponsor

Medtronic Cardiac Rhythm and Heart Failure is the lead sponsor of 239 studies on the registry; 6 are open to participants now.

Of its 19 completed or terminated interventional studies of FDA-regulated products, 17 (89%) have results posted.

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

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Investigator believes the patient's condition is sufficiently stable to safely participate in the study procedures
  • Subject is currently implanted with a commercially available pulmonary artery pressure sensor and device communication has been reliable (recent history of successful communications with patient communication system)

Exclusion criteria

Exclusion Criteria:

  • Subject has a history of primary PAH
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Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
16 participants (actual)

Study arms

  • Other
    All participants

    All participants enrolled in a single arm to evaluate effect of variables (posture, respiration, exertion) on pulmonary artery pressure (PAP)

    Other: Reveal LINQ ICM Cardiac Monitor, taped on the subject's chest rather than inserted in the body.

Interventions

  • OtherReveal LINQ ICM Cardiac Monitor, taped on the subject's chest rather than inserted in the body.

    Cardiac Monitor with LINQ™ HF Investigational RAMware download

    Also known as: Interventions included: Changing posture, changing respiration, and changing exertion

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What researchers measure

Primary outcomes

  1. Mean Change in Pulmonary Artery Pressure (PAP) Due to Change in Posture

    Posture defined as lying left side down compared to baseline supine

    Time frame: Same day as enrollment (during office visit, maximum of 30 minutes after baseline masurement)

Secondary outcomes

  1. Change in PAP During Change in Respiration

    Outcome measure defined as PAP during coughing compared to PAP during normal breathing respiration at baseline.

    Time frame: Same day as enrollment (during office visit, maximum of 30 minutes after baseline measurement)

  2. Change in PAP as Measured After Mild Exertion Compared to Initial Baseline PAP at Rest.

    Time frame: Same day as enrollment (during office visit, maximum of 10 minutes after baseline measurement)

07

Results

Posted Apr 12, 2019

Participant flow

Participant flow — Overall Study
MilestoneSingle Arm Design
Started16
Completed16
Not completed0

Outcome measures

PrimaryMean Change in Pulmonary Artery Pressure (PAP) Due to Change in Posture

Posture defined as lying left side down compared to baseline supine

Time frame:
Same day as enrollment (during office visit, maximum of 30 minutes after baseline masurement)
Reported as:
Mean · mmHg
Mean Change in Pulmonary Artery Pressure (PAP) Due to Change in Posture
mmHgSingle Arm Design
Mean Change in Pulmonary Artery Pressure (PAP) Due to Change in Posture27.7 ± 10.3
Statistical analysis
  • Single Arm Design · ANOVA · p = 0.429
SecondaryChange in PAP During Change in Respiration

Outcome measure defined as PAP during coughing compared to PAP during normal breathing respiration at baseline.

Time frame:
Same day as enrollment (during office visit, maximum of 30 minutes after baseline measurement)
Reported as:
Mean · mmHg
Change in PAP During Change in Respiration
mmHgSingle Arm
Change in PAP During Change in Respiration25.9 ± 13.3
Statistical analysis
  • Single Arm · ANOVA · p = 0.059 (Pressure during coughing versus normal breathing initially measured at baseline.)
SecondaryChange in PAP as Measured After Mild Exertion Compared to Initial Baseline PAP at Rest.
Time frame:
Same day as enrollment (during office visit, maximum of 10 minutes after baseline measurement)
Reported as:
Mean · mmHg
Change in PAP as Measured After Mild Exertion Compared to Initial Baseline PAP at Rest.
mmHgSingle Arm Design
Change in PAP as Measured After Mild Exertion Compared to Initial Baseline PAP at Rest.27.7 ± 12.2
Statistical analysis
  • Single Arm Design · ANOVA · p = <0.001

Adverse events

Collected over All-Cause Mortality, Serious, and Other (Not Including Serious) Adverse Events were not monitored/assessed. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Single Arm———

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Single Arm
<=18 years0
Between 18 and 65 years4
>=65 years12
Age, Continuous
Age, Continuous(years)Single Arm
Mean68.8 ± 11.2
Sex: Female, Male
Sex: Female, Male(Participants)Single Arm
Female6
Male10
Region of Enrollment
Region of Enrollment(Participants)Single Arm
United States16
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Study locations

2 sites
  • University of California, San Francisco
    San Francisco, California 94143, United States
  • The Lindner Research Center
    Cincinnati, Ohio 45219, United States
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 12, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02943941
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Responsible party
Sponsor
First posted
Oct 25, 2016
Start date
Jul 2016
Primary completion
Jan 2017
Completion
Jan 2017
Results posted
Apr 12, 2019
Last update
Apr 12, 2019

Study contacts

Verla Laager
study director · Medtronic

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2019. You cannot join it, but the record below documents what was studied.

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