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Cardiac Vulnerability in Potentially Susceptible Patients



Cardiac Vulnerability in Potentially Susceptible Patients

For Condition: Heart Disease
Status: Recruiting
Sponsor(s): National Institute of Environmental Health Sciences (NIEHS) ,
Synopsis: This project is part of a program project directed toward assessing cardiac effects of particulate and other ambient air pollutants. In this project patient who have recently suffered a cardiac event are being monitored with cardiac monitors for 24 hours up to 4 times during the year following their cardiac event. Similarly a second group of patients with moderate to severe heart failure will undergo similar cardiac monitoring for 24 hours, twice a week separated by 3 months. In both sets of patients home indoor pollution measures will be continuously made and used to correlate with measures of heart rate variability.
Details: Approximately 50 patients in each group will be studied. In addition to cardiac monitoring for 24 hours at each session, overnight respiratory pattern and oxygen saturation will be monitored in both groups. The exposure monitoring will include both particle mass of PM2.5 along with detailed assessment to determine that portion of the particulate exposure from outdoor vs. indoor sources.
Eligibility:
Study Type:  Observational, Natural History, Longitudinal, Defined Population, Prospective Study
Minimum Age/Maximum Age: 45 Years/74 Years
Genders: Both
Protocol Entry Criteria: For the cardiac event cases patients are selected from the Brigham and Women's Hospital cardiac services at the time of discharge, aged 45-74, having suffered a cardiac event resulting in either an infarct or need for a cardiac procedure (angioplasty, stint, etc). For the CHF patients they are selected from the BWH cardiac clinics where they have been identified and classified as stage 3 or 4 CHF. For both groups residence requirements are that they reside within the Greater Boston Area as defined by an outer ring road (Route 495) and are willing to be visited at home and have the exposure assessment equipment set up in their home as well as be monitored personally.
Total Enrollment: 100

Location and Contact Information:

Overall Study Official:
FrankSpeizer,  Principal Investigator,  Environmental Epidemiology Program, Department of Environmental Health, Harvard School of Public Health

Brigham and Womens Hospital *Recruiting*
Boston,  Massachusetts,  02115
United States
Recruiting Frank  Speizer 617-525-2275


Additional Information:
Study ID Numbers:  9825-CP-001; 
Study Start Date: October 1999
Record last reviewed: March 2001
Additional information available at: clinicaltrials.gov
Clinicaltrials.gov Reference link: NCT00012493

Other Heart Disease Studies:
1. Cardiovascular Vulnerability to Particulate Exposure

2. Magnetic Resonance Imaging of the Blood Vessels of the Heart

3. Evaluation of Patients with Known or Suspected Heart Disease

4. Outpatient Evaluation of Patients with Known or Suspected Heart Disease

5. Women's Use of Alternative Medicine: A Multiethnic Study

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