Cardiac Vulnerability in Potentially Susceptible Patients

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT00012493

Enrollment

100

Registered

2001-03-12

Start date

1999-10-31

Completion date

2002-12-31

Last updated

2006-09-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Heart Disease

Keywords

Cardiac event, Heart disease, Particulate Matter

Brief summary

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.

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.

Interventions

None listed

Study design

Observational model

DEFINED_POPULATION

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

45 Years to 74 Years

Healthy volunteers

Inclusion 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.

Countries

United States

Outcome results