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Heart FailurePhase 4NCT01752543

Effects on Exercise Hemodynamics of Vasopressin Blockade by Conivaptan Infusion in Heart Failure Patients

A Phase 4 study testing Conivaptan in people with Heart Failure, run by Finn Gustafsson at 1 site in Denmark.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of the present study is to evaluate the effects of a blockade of the vasopressin system and central hemodynamic system in heart failure (HF) patients during physical exercise. The significance of the vasopressin system during physical exercise is unclear. Read more about this study

Who is it for?
Ages 18 to 80 years
Conditions the study is for
Heart Failure
What is being tested?
Conivaptan
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
20 participants
Where
1 siteDenmark
Study dates
Dec 2013to Jun 2015
Phase
Phase 4
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age > 18 years
  • Left ventricular ejection fraction (LVEF) < 45 % on the baseline echocardiography.
  • Treatment with beta-blockers and angiotensin-converting-enzyme (ACE) inhibitors for at least 1 month as tolerated
  • New York Heart Association (NYHA) Functional Class II-III
  • Given informed consent
  • Women, who have not yet entered menopause (defined as no menstrual bleeding in the last 12 months), will provide a negative urine HCG before entering the study

Who cannot join

  • Signs of symptomatic or ongoing myocardial ischemia
  • Known non-revascularized coronary disease
  • Presence of hypovolemic hyponatremia (P-Na+ <130 mmol/l and clinical signs of volume depletion or dehydration as judged by investigator).
  • Hypernatraemia (P-Na+) > 145 mmol/L
  • Chronic obstructive pulmonary disease (FEV1/FVC < 70 % and/or 30 % > FEV1 < 50 %)
  • Supine systolic blood pressure < 85 mmHg
Show all 27Show fewer
  • Significant orthostatic hypotension
  • Standing blood pressure < 80 mmHg or a blood pressure drop > 20 mmHg when changing from a supine to a standing position
  • Uncontrolled hypertension evaluated by the investigator
  • Uncontrolled cardiac arrhythmias evaluated by the investigator
  • Untreated serious hypothyroidism
  • Adrenal insufficiency
  • Poor echocardiographic window
  • Inability to perform exercise testing
  • Permanent atrial fibrillation or atrial fluttering
  • Planned coronary by-pass surgery
  • Moderate hepatic impairment (ALAT/ASAT > 3 UNL)
  • Presence of other diseases affecting treatment with conivaptan or the evaluation of safety as evaluated by the investigator
  • Severely decreased kidney function (eGFR < 20 mL/min)
  • Serum K+< 3.5 or > 5.5 mmol/L
  • Known conivaptan intolerability
  • Corn allergy
  • Dextrose Allergy
  • Treatment with potent CYP3A-inhibitors (ketoconazole, itraconazole, clarithromycin, ritonavir, indinavir)
  • Treatment with arginine vasopressin, oxytocin, desmopressin and other medications for the treatment of hyponatremia (lithium salts, urea and demeclocycline)
  • Warfarin treatment
  • Presence of infection or active bleeding

Trial locations and contacts

1 site in 1 country.

Denmark1 site
  • Department of Cardiology, Copenhagen University Hospital, Rigshospital

    Copenhagen, 2100

Other trials in Denmark

About this study

The purpose of the present study is to evaluate the effects of a blockade of the vasopressin system and central hemodynamic system in heart failure (HF) patients during physical exercise. The significance of the vasopressin system during physical exercise is unclear. If vasopressin is a significant regulator of exercise hemodynamics in HF, strategies to intervene against activation of the V1A-receptor might be expected to improve HF symptoms and possibly outcome.

The potential effects of the central hemodynamic system will be evaluated with a Swan-Ganz catheter. Echocardiography will be performed at rest and during submaximal working capacity before and during the infusion of a vasopressin receptor antagonist (conivaptan) or placebo. Cardiac output will be measured by thermodilution. The exercise test will be performed at 50 % of VO2 max and hemodynamic and echocardiographic measurements will be collected. The exercise test will be performed on a supine multistage bicycle.

Conditions
Heart Failure
Being tested
Conivaptan, Placebo (Dextrose)
Keywords
Vasopressin, Exercise capacity, Conivaptan
Medical subject headings
Heart Failure, Diabetes Insipidus

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ConivaptanDrug

    Also called Vaprisol

    Conivaptan treatment: 20 mg bolus followed by infusion of 2 mg/hour

  • Placebo (Dextrose)Drug

    Also called 5 % dextrose

    Placebo treatment: 20 mg bolus followed by infusion of 2 mg/hour

Study groups in NCT01752543
Study groupRoleWhat they receive
ConivaptanActive comparator10 patients will be randomized to conivaptan treatment
Receives: Drug: Conivaptan
DextrosePlacebo comparator10 patients will receive placebo treatment (dextrose)
Receives: Drug: Placebo (Dextrose)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. The joint endpoint of change in pulmonary capillary wedge pressure (PCWP) and cardiac output (CO) at the submaximal exercise intensity of 50 % of the maximal exercise capacity

    Measured: 1 day

Secondary outcomes (5)
  1. Cardiac index (CI) during submaximal exercise from rest to submaximal exercise

    Measured: 1 day

  2. Pulmonary and systemic vascular resistance from rest to submaximal exercise

    Measured: 1 day

  3. Left ventricular end diastolic diameter during exercise from rest to submaximal exercise

    Measured: 1 day

  4. The change in mean pulmonary artery pressure (mPAP) from rest to submaximal exercise

    Measured: 1 day

  5. The change in BNP, MR-ANP and copeptin from rest to submaximal exercise

    Measured: 1 day

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Dec 2012 (estimated)
  2. Study startDec 2013
  3. Primary completionJun 2015
  4. Study completionJun 2015

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Single group
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01752543
Sponsor's protocol ID
H-3-2012-139
Status last verified
Jun 2015
First submitted
12 Dec 2012
Last updated
17 Jun 2015
Results posted
No
Data monitoring committee
Yes

Publications

  • Balling L, Thomsen JH, Wolsk E, Hassager C, Boesgaard S, Goldsmith SR, Gustafsson F. Hemodynamic effects of short-term infusion of a vasopressin V1A/V2 receptor antagonist conivaptan in patients withchronic heart failure during submaximal exercise. Am Heart J. 2018 Sep;203:101-104. doi: 10.1016/j.ahj.2018.05.015. Epub 2018 Jun 14. No abstract available.

    PubMed 30057012

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Conivaptan in people with Heart Failure, run by Finn Gustafsson at 1 site in Denmark.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 27 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Jun 2015. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The joint endpoint of change in pulmonary capillary wedge pressure (PCWP) and cardiac output (CO) at the submaximal exercise intensity of 50 % of the maximal exercise capacity (time frame: 1 day). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01752543, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Jun 2015.

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