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The cardiovascular system is comprised of the heart and the network of arteries, veins, and capillaries that carries blood throughout the body. The average adult male has between 5-6 liters of blood while the average adult female has 4-5 liters. Blood transports oxygen and essential nutrients to all of the living cells in the body, and also carries waste products from the tissues to the systems of the body through which they are removed.
Updated: 50 min 26 sec ago

More than half of atrial fibrillation patients become asymptomatic after catheter ablation

Thu, 01/19/2017 - 14:00
More than half of patients with atrial fibrillation (AF) become asymptomatic after catheter ablation, reports the largest study of the procedure published in European Heart Journal.

Epigenetic factors linked to obesity-related disease

Thu, 01/19/2017 - 08:00
Obesity has been linked to "letter" changes at many different sites in the genome, yet these differences do not fully explain the variation in people's body mass index (BMI) or why some overweight...

Blacks, Hispanics less likely to achieve blood pressure control

Wed, 01/18/2017 - 08:00
Blacks and Hispanics with high blood pressure are less likely than whites to get their condition under control, according to new research in Circulation: Cardiovascular Quality and Outcomes, an...

Biomarker could identify patients with potential for recovery from advanced heart failure

Wed, 01/18/2017 - 08:00
Investigators at the University of Utah have identified distinct differences in the hearts of advanced heart failure patients who have defied the odds and showed signs of recovery from the disease.

Why might coffee drinkers live longer? Study sheds light

Tue, 01/17/2017 - 17:00
A new study finds that caffeine counters an inflammatory process linked to poor heart health in later life, explaining why coffee drinkers may live longer.

Older, fitter adults experience greater brain activity while learning

Tue, 01/17/2017 - 08:00
Older adults who experience good cardiac fitness may be also keeping their brains in good shape as well.

Study finds high survival rate for elderly patients with implantable defibrillator

Tue, 01/17/2017 - 08:00
Of patients over age 65 who received an implantable cardioverter-defibrillator (ICD) after surviving sudden cardiac arrest or a near-fatal arrhythmia, almost 80 percent survived two years - a...

Ministrokes may cause dementia, study suggests

Mon, 01/16/2017 - 17:00
New study suggests the impact of ministrokes is wider and longer-lasting than previously understood, potentially causing dementia and cognitive decline.

Atrial fibrillation more prevalent in dialysis patients than expected

Mon, 01/16/2017 - 14:00
Atrial fibrillation, which is the most common cardiac arrhythmia, is an important risk factor for strokes.

Women with high-risk congenital heart disease can have successful pregnancies

Fri, 01/13/2017 - 08:00
American Heart Association Scientific Statement: Women with high-risk congenital heart disease can have successful pregnancies but should seek counseling before conception to understand how their...

Researchers use stem cells to regenerate the external layer of a human heart

Fri, 01/13/2017 - 08:00
A process using human stem cells can generate the cells that cover the external surface of a human heart - epicardium cells - according to a multidisciplinary team of researchers.

Quick and easy blood test for gut bacteria can predict accurately risk of death and heart problems in heart attack patients

Thu, 01/12/2017 - 14:00
The bacteria that inhabit our gut digest food and produce metabolites that can have a marked effect on the heart and blood vessels.

Stress, heart health, and the amygdala: Links explained

Thu, 01/12/2017 - 08:00
Although it is common knowledge that stress impacts cardiovascular health, the mechanisms at work have remained a mystery. New research gives fresh clues.

Cutting salt intake by 10 percent would be 'highly cost effective worldwide'

Wed, 01/11/2017 - 15:00
New study finds that nearly all countries would find a soft regulation strategy to cut salt intake by 10 percent over 10 years to be highly cost effective.

Exploiting the placebo effect can improve recovery of heart surgery patients

Wed, 01/11/2017 - 08:00
Exploiting the placebo effect significantly improved the recovery of patients undergoing heart surgery according to new research published in the open access journal BMC Medicine.

70% of heart attack programmes failing to meet minimum standards for patient care

Tue, 01/10/2017 - 08:00
More than two-thirds (70%) of heart attack programmes are failing to meet the minimum requirements for patient care, according to research funded by the British Heart Foundation (BHF).

Hitherto unknown risk factor for arteriosclerosis identified

Mon, 01/09/2017 - 14:00
Following a blood infection, the first class of antibodies produced by the immune system are IgM antibodies.

Structure of kidney failure patients' blood clots may increase their risk of early death

Mon, 01/09/2017 - 08:00
Dialysis patients may have altered blood clots that increase their risk of dying prematurely, according to a study appearing in the Journal of the American Society of Nephrology (JASN).

Physical activity reduces heart disease deaths for older adults

Mon, 01/09/2017 - 08:00
Being physically inactive - sitting for long periods of time - can be so harmful to your health that experts sometimes call it "sitting disease.

Blood test predicts silent heart disease risk

Wed, 01/04/2017 - 14:00
Study shows that blood troponin levels can predict risk of heart attack and death, and response to statins.