A Comparison of Two Treatments: Pacemaker and Percutaneous Transluminal Septal Ablation for Hypertrophic Cardiomyopathy
Public ClinicalTrials.gov record NCT00001894. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Randomized Prospective Comparison of DDD Chamber Pacing and Percutaneous Transluminal Septal Ablation in Obstructive Hypertrophic Cardiomyopathy Associated With Severe Drug-Refractory Symptoms
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study will compare two treatments: pacemaker implantation and percutaneous transluminal septal ablation (PTSA) for patients with hypertrophic cardiomyopathy (HCM), a condition in which the heart muscle thickens and obstructs the flow of blood out of the heart. The reduced blood flow can cause chest pain, shortness of breath, palpitations, tiredness, lightheadedness and fainting. Patients with HCM who cannot be helped by drug therapy may participate in the study. The standard treatment for such patients is septal myectomy, an operation in which the surgeon shaves the muscle obstructing the blood flow. Another treatment option is implantation of a type of pacemaker that causes the heart to contract in a certain way that reduces blood flow obstruction and improves symptoms. The pacemaker is implanted under local anesthesia and usually takes less than an hour. PTSA is an experimental treatment that may provide a third option. In PTSA, a thin tube (catheter) is inserted into the blood vessel that feeds the heart muscle causing the blood flow obstruction. A small amount of alcohol is injected through the catheter to destroy some of the muscle and relieve the obstruction. Candidates will have the following screening tests: chest X-ray, electrocardiogram, echocardiogram, exercise tests, exercise radionuclide angiography, exercise thallium scintigraphy, Holter monitoring, cardiac catheterization, electrophysiology study, and coronary angiography. Participants will be assigned to one of the two treatments groups: pacemaker implantation or PTSA. Patients in the PTSA group will also have magnetic resonance imaging scans at the start of the study, 3 to 7 days after PTSA, and at the end of the study, in order to observe changes in the heart's shape. All patients will fill out a questionnaire answering questions about their quality of life. Patients' progress will be followed with monthly phone calls. In addition, various tests, such as exercise tests and echocardiography, will be done during repeat visits at three and six months to measure treatment results. Patients will again complete quality-of-life questionnaires at both of those visits.
Study identification
- NCT ID
- NCT00001894
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 70 participants
Conditions and interventions
Conditions
Interventions
- pacemaker implantation Procedure
- percutaneous transluminal septal ablation (PTSA) Procedure
Procedure
Eligibility (public fields only)
- Age range
- Not listed
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 31, 1999
- Primary completion
- Not listed
- Completion
- Aug 31, 2002
- Last update posted
- Jul 3, 2006
1999 – 2002
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Heart, Lung and Blood Institute (NHLBI) | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00001894, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 3, 2006 · Synced Sep 8, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00001894 live on ClinicalTrials.gov.