Efficacy Study of Cardizem in Pulmonary Arterial Hypertension

November 16, 2018 updated by: Mark Rumbak, University of South Florida

Calcium Channel Blockers in Nitric Oxide Non-responder Pulmonary Arterial Hypertension.

The purpose of this study is to determine if cardizem is effective in the treatment of nitric oxide non-responder pulmonary arterial hypertension.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Study Type

Interventional

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Florida
      • Tampa, Florida, United States, 33612
        • University of South Florida

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Adult participants
  • Confirmed WHO class I pulmonary arterial hypertension
  • Nitric Oxide Non-Responders on right heart catheterization
  • Experience dyspnea, NYHA III-IV with poor oxygenation and quality of life despite standard treatments
  • Must be able to swallow medications

Exclusion Criteria:

  • Pulmonary hypertension secondary to 1) elevations in pulmonary venous pressures (i.e. left heart disease), 2) chronic hypoxemic states from lung diseases such as COPD, sleep-disordered breathing, alveolar hypoventilation disorders, chronic exposure to high altitude and developmental abnormalities 3) chronic thromboembolic disease, 4) sarcoidosis, 5) Lymphangiomyomatosis, 5) Pulmonary Langerhans Cell Histiocytosis
  • Already on a calcium channel blocker
  • Systolic blood pressure less than 90
  • Heart rate less than 55
  • Pregnant
  • Cannot sign informed consent
  • Right heart failure
  • Pulmonary Veno-occlusive disease

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Diltiazem
The study agent will be Diltiazem and will start at 60 mg po BID then titrated up every two weeks until at a maximum dose of 180mg po BID.
Drug: Diltiazem Hydrochloride
The study agent will be diltiazem and will start at 60 mg po BID then titrated up very two weeks until at a maximum maintenance dose of 180mg po BID for six weeks.
Other Names:
  • treatment group
  • cardizem
Placebo Comparator: Sugar Pill
The placebo group of patients will be treated with Drug A (sugar pill) PO bid and titrated up every two weeks for next titration dose (actually will be an unchanged concentration).
Drug: Sugar Pill
The placebo group of patients will be treated with sugar pill PO bid and return every two weeks for next titration dose (actually will be an unchanged concentration).
Other Names:
  • placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Six Minute Walk Distance
Time Frame: 12 weeks
12 weeks

Secondary Outcome Measures

Outcome Measure
Time Frame
Dyspnea Score
Time Frame: 12 weeks
12 weeks
Quality of Life Score
Time Frame: 12 weeks
12 weeks
Pulse Oximetry
Time Frame: 12 weeks
12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of South Florida

Investigators

  • Principal Investigator: Mark Rumbak, MD, University of South Florida

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2012

Primary Completion (Actual)

September 1, 2014

Study Completion (Actual)

September 1, 2014

Study Registration Dates

First Submitted

October 18, 2011

First Submitted That Met QC Criteria

July 17, 2012

First Posted (Estimate)

July 20, 2012

Study Record Updates

Last Update Posted (Actual)

November 20, 2018

Last Update Submitted That Met QC Criteria

November 16, 2018

Last Verified

November 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Pro00004379

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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