A single breath of hydrogen sulfide, a gas best known for its rotten-egg smell, can kill. But at low concentrations, hydrogen sulfide could protect vital organs during surgery, research conducted by a new Emory University School of Medicine professor suggests.

The number of patients over age 65 hospitalized for heart failure increased by 131 percent between 1980 and 2006. Women had a much higher annual increase than men. Among the three major forms of cardiovascular disease (coronary heart disease and stroke being the other two), only heart failure has shown a significant increase in hospitalization rates.

An implantable hemodynamic monitor may help to guide medical treatment in a large subgroup of patients with heart failure: those with diastolic heart failure.

Heart failure patients have four times the risk of fractures and 6.3 times the risk of hip fracture as other heart patients. Heart failure patients should be screened and treated for osteoporosis if necessary, researchers said.

Long-term gene therapy resulted in improved cardiac function and reversed deterioration of the heart in rats with heart failure, according to a recent study.

Patient history and physical examination, traditionally the cornerstone diagnostic tool for medical care, may still be among the most accurate and cost-efficient methods to assess patients with congestive heart failure, researchers have found.

Frequent arousals from sleep that occur in heart failure patients with central sleep apnea (CSA) may reflect the presence of another underlying arousal disorder rather than being a defensive mechanism to terminate apneas. Findings show that factors other than central sleep apnea may contribute to poor sleep quality in heart-failure patients.

A family of proteins called matrix metalloprotienase may play a crucial role in why the supporting tissue surrounding the heart, called the myocardium, goes through significant and deleterious effects in heart failure patients.

Researchers are enrolling people in a new clinical trial that uses a patient's own stem cells to treat ischemic and non-ischemic heart failure. The one-year Cardiac Repair Cell Treatment of Patients with Dilated Cardiomyopathy study will look at the safety of injecting Cardiac Repair Cells and their ability to improve heart function.

Working out on a stationary bicycle or walking on a treadmill just 25 to 30 minutes most days of the week is enough to modestly lower risk of hospitalization or death for patients with heart failure, say researchers.