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Long-Term Results of DDD Pacing in Obstructive Hypertrophic Cardiomyopathy

NCT00001530 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 120

Last updated 2008-03-04

No results posted yet for this study

Summary

DDD pacing improves symptoms and relieves LV outflow tract (LVOT) obstruction in most patients with hypertrophic cardiomyopathy (HCM). Notably, when pacing is temporarily discontinued, the beneficial effects of pacing are evident in sinus rhythm. The long term results of this novel therapy are, however, uncertain. We propose (1) to record the hemodynamic changes following \>4 years of pacing; and (2) to determine whether DDD pacing continues to be necessary in patients who have had a substantial relief of their LVOT obstruction. Patients who have had \>50% reduction in LVOT pressure gradients will be randomized to two pacing modalities: DDD at 70 beats per minute and AAI pacing at 70 beats per minute (DDD switched off), and reevaluated after a six-month period.

Conditions

  • Cardiomyopathy, Hypertrophic

Sponsors & Collaborators

  • National Heart, Lung, and Blood Institute (NHLBI)

    lead NIH

Eligibility

Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
1996-04-30
Completion
2000-05-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00001530 on ClinicalTrials.gov