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CompletedNCT03293407VENTASTEPUpdated May 26, 2021

Evaluation of Inhaled Iloprost Effects Using the Breelib Nebulizer, on Clinical Outcomes and Physical Activity of Patients With Advanced Pulmonary Arterial Hypertension

An observational study in Hypertension, Pulmonary, sponsored by Bayer. Completed at 1 site in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-05-26.

Primary conditionPulmonary Arterial HypertensionRegistry: Hypertension, PulmonaryReclassifiedWhy we changed it
Registry
Hypertension, Pulmonary — the first condition term the registry derived for this study.
ClinicalTrials.gg
Pulmonary Arterial Hypertension
Why
  1. The study's title name Pulmonary Arterial Hypertension, a narrower term within Hypertension, Pulmonary.
Confidence
High: the new condition is named in the study's own title. Of 46 hand-checked studies reclassified this way, 72% were exactly right and 89% in the right disease family; the registry's first term was right for 4% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Bayer · Observational

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Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
31
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 19 studies in Pulmonary Arterial Hypertension by Bayer — none open to participants now, 1 under way, 1 of them phase 3. Pulmonary Arterial Hypertension · Bayer.

Enrollment
11th of 12
31 · median 84
Started
2018
the only one that year
Observational
12 of 19
none open now
Registered
16th of 19
by date

Among the 19 studies in Pulmonary Arterial Hypertension by Bayer, this one is the 11th largest by enrollment of the 12 observational ones that give a count, is the only one that started in 2018, is one of 12 observational ones, and was the 16th registered.

Pulmonary Arterial Hypertension

699 studies on the registry are indexed under Pulmonary Arterial Hypertension; 140 are open to participants now.

Browse Pulmonary Arterial Hypertension studies →

Open to participants now

None of the 19 studies in Pulmonary Arterial Hypertension by Bayer is open now. The open studies under Pulmonary Arterial Hypertension, anywhere →

Who these studies take

Of the 90 Pulmonary Arterial Hypertension studies recruiting now, 51 (57%) set no upper age limit and 24 (27%) stop at 75 or younger; 18 take children under 18; 11 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Download CSVNarrow it in search →With an account: the 19 studies in Pulmonary Arterial Hypertension by Bayer as a file.
02

Study summary

The main aim of the observational VENTASTEP study was to investigate the association between changes in clinical outcome measures and changes in device outcome measures in PAH patients using the new Breelib nebulizer in a real life setting.

The study was not designed to investigate or confirm the effectiveness and safety of iloprost.

03

Conditions studied

  • Hypertension, Pulmonary

Browse trials for

Keywords

  • Pulmonary arterial hypertension
  • PAH
04

In context

Pulmonary Arterial Hypertension Reclassified

699 studies on the registry are indexed under Pulmonary Arterial Hypertension; 140 are open to participants now.

This study's enrollment of 31 is below the median of 104 across 181 observational studies indexed under Pulmonary Arterial Hypertension.

Browse Pulmonary Arterial Hypertension studies →

Lead sponsor

Bayer is the lead sponsor of 1,674 studies on the registry; 51 are open to participants now.

Of its 214 completed or terminated interventional studies of FDA-regulated products, 132 (62%) have results posted.

Compared within Pulmonary Arterial Hypertension, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Hypertension, Pulmonary. The counts are of registry records indexed under each term, refreshed daily. How we classify →

05

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients with pulmonary hypertension at intermediate risk and WHO FC III who failed to respond adequately to initial therapy with one or more PAH drugs or who clinically deteriorated after initial treatment response and for whom a therapy escalation with Ventavis (Iloprost) has been agreed by patient and physician.

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

  • Ventavis-treatment naïve patients aged ≥18 years at initiation of Ventavis (Iloprost) therapy diagnosed with pulmonary arterial hypertension WHO FC III
  • Patients who are planned to be treated with Ventavis (Iloprost) and where the decision to use the Breelib has been agreed by physician and patient
  • Patients who are willing to wear a smart watch (iWatch2) over the observation period of 3 months ± 2 weeks
  • Signed

Exclusion criteria

Exclusion Criteria:

  • Patients allergic to Nickel and Methacrylates
  • Patients participating in an program with interventions outside of routine clinical practice
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

06

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
31 participants (actual)
Patient registry
No

Groups and cohorts

  • BAYQ6256_Ventavis

    Patients with pulmonary hypertension who agree to be treated with Ventavis (Iloprost) at the discretion of physician

    Drug: Iloprost (Ventavis, BAYQ6256) · Device: Breelib nebulizer

Interventions

07

What researchers measure

Primary outcomes

  1. Change of Six-minute walking distance (6MWD)

    Clinical outcome measured by study nurse.

    Time frame: Baseline and 3 months

  2. Change of laboratory results of the biomarkers NT-pro BNP/BNP

    Time frame: Baseline and 3 months

  3. Change of Health related Quality of Life-EuroQol five dimensions questionnaire (EQ-5D)

    Time frame: Baseline and 3 months

  4. Change of World Health Organization functional class

    Time frame: Baseline and 3 months

  5. Change of Distance Walked per day

    Time frame: Baseline and 3 months

  6. Change of Number of Steps per day

    Time frame: Baseline and 3 months

  7. Change of number of floors climbed (10 feet) per day

    Time frame: Baseline and 3 months

  8. Change of time spent at home per day

    Time frame: Baseline and 3 months

  9. Change of number of relevant location changes per day

    Time frame: Baseline and 3 months

  10. Change of number of times leaving home per day

    Time frame: Baseline and 3 months

  11. Change of number of times standing up per day

    Time frame: Baseline and 3 months

  12. Change of 6MWD

    Device based outcome measured by smart device.

    Time frame: Baseline and 3 months

  13. Heart rates during baseline and observation period

    Time frame: Up to 3 months

Secondary outcomes

  1. The average daily inhalation duration per session

    Time frame: Up to 3 months

  2. The average number of daily inhalations

    Time frame: Up to 3 months

  3. Change of sleep quality

    Measured by Pittsburgh Sleep Quality Index (PSQI).

    Time frame: Baseline and 3 months

  4. Incidence of AEs

    Time frame: Up to 3 months after first inhalation

  5. Change of heart rate during 6MWD

    Time frame: Baseline and 3 months

  6. The average daily proportion of complete/incomplete inhalations

    Time frame: Up to 3 months

  7. The average association between physical activity level (wearable device based) and time to last inhalation

    Time frame: Up to 3 months

08

Study locations

1 site
  • Many Locations
    Multiple Locations, Germany
09

References and documents

Publications

  • Mueller C, Stollfuss B, Roitenberg A, Harder J, Richter MJ. Evaluation of Clinical Outcomes and Simultaneous Digital Tracking of Daily Physical Activity, Heart Rate, and Inhalation Behavior in Patients With Pulmonary Arterial Hypertension Treated With Inhaled Iloprost: Protocol for the Observational VENTASTEP Study. JMIR Res Protoc. 2019 Apr 15;8(4):e12144. doi: 10.2196/12144. PubMed 30985279 ↗
  • Stollfuss B, Richter M, Dromann D, Klose H, Schwaiblmair M, Gruenig E, Ewert R, Kirchner MC, Kleinjung F, Irrgang V, Mueller C. Digital Tracking of Physical Activity, Heart Rate, and Inhalation Behavior in Patients With Pulmonary Arterial Hypertension Treated With Inhaled Iloprost: Observational Study (VENTASTEP). J Med Internet Res. 2021 Oct 8;23(10):e25163. doi: 10.2196/25163. PubMed 34623313 ↗
10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2018 to primary completion in Oct 2019, 20 months.

Of 85 observational studies under Pulmonary Arterial Hypertension, half reached primary completion within 58 months of starting (the median), counting those still running; a quarter within 30 and three quarters within 93. This study's 20 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 20, 2017
First posted
Sep 26, 2017
StartActual
Feb 1, 2018
Primary completionActual
Oct 9, 2019
CompletionActual
Jan 20, 2020
Last update
May 26, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 26, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03293407
Lead sponsor
Bayer
Responsible party
Sponsor
First posted
Sep 26, 2017
Start date
Feb 1, 2018
Primary completion
Oct 9, 2019
Completion
Jan 20, 2020
Last update
May 26, 2021

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2021. You cannot join it, but the record below documents what was studied.

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Discussion

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