This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Cardiac Vulnerability in Potentially Susceptible Patients

This study has been completed.
Information provided by:
National Institute of Environmental Health Sciences (NIEHS) Identifier:
First received: March 9, 2001
Last updated: September 1, 2006
Last verified: September 2006
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.

Heart Disease

Study Type: Observational
Study Design: Observational Model: Defined Population
Observational Model: Natural History
Time Perspective: Longitudinal
Time Perspective: Prospective

Resource links provided by NLM:

Further study details as provided by National Institute of Environmental Health Sciences (NIEHS):

Estimated Enrollment: 100
Study Start Date: October 1999
Estimated Study Completion Date: December 2002
Detailed Description:
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.

Ages Eligible for Study:   45 Years to 74 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
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.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00012493

United States, Massachusetts
Brigham and Womens Hospital
Boston, Massachusetts, United States, 02115
Sponsors and Collaborators
National Institute of Environmental Health Sciences (NIEHS)
Principal Investigator: Frank E Speizer, MD Environmental Epidemiology Program, Department of Environmental Health, Harvard School of Public Health
  More Information Identifier: NCT00012493     History of Changes
Other Study ID Numbers: 9825-CP-001
Study First Received: March 9, 2001
Last Updated: September 1, 2006

Keywords provided by National Institute of Environmental Health Sciences (NIEHS):
Cardiac event
Heart disease
Particulate Matter

Additional relevant MeSH terms:
Heart Diseases
Cardiovascular Diseases processed this record on August 18, 2017