Active clinical trials for "Heart Diseases"

To evaluate the cardiovascular effects of postmenopausal hormone replacement therapy and the suspected beneficial effects on myocardial infarction and stroke.

To examine the natural histories of coronary artery disease and hypertension in cohorts of Black and white men of identical education and occupations.

To evaluate the ability of heart rate variability to identify myocardial infarction patients at high risk of dying, particularly from sudden cardiac death.

To assess whether current oral contraceptive (OC) use (within the previous month) increased the risk of myocardial infarction. Also, to assess the combined effects of cigarette smoking and oral contraceptive use.

To determine the effects of long-term exposure to passive smoking on the cardiovascular and oxygen transport systems in pre-adolescent twins.

To investigate factors which trigger the discharge of implantable cardioverter-defibrillators (ICDs).

To assess the relationship of community socioeconomic (SE) structure to cardiovascular disease and all-cause mortality trends in the United States.

To determine whether the dietary intake of trans-fatty acids derived from partially hydrogenated unsaturated fatty acids measured through a biomarker are directly associated with the risk of primary cardiac arrest.

To localize, identify, and evaluate common polymorphic variation in genes involved in determining interindividual differences in blood pressure (BP) levels and essential hypertension status in three racial groups: African-Americans, Mexican-Americans, and Non-Hispanic Whites. The study consists of a six grant network, which in turn is part of an NHLBI initiative, the Family Blood Pressure Program (FBPP) consisting of four networks.

To map the major genetic loci underlying hypertension in approximately 1700 sibling pairs of Asian-Pacific Chinese and Japanese origin. The study consists of a two grant network, which in turn is part of an NHLBI initiative, the Family Blood Pressure Program (FBPP) consisting of four networks.