Heart Failure Death Risk Lower for Women
Risk of Death 31% Higher for Men, Study Finds
WebMD News Archive
March 8, 2012 -- Women with failing hearts survive longer than men, according to the largest analysis ever to examine the impact of gender on heart failure deaths.
When researchers analyzed data from 31 studies involving nearly 28,000 men and 14,000 women, they found male gender to be an independent risk factor for death from heart failure.
About 5.7 million Americans suffer from heart failure. Women tend to develop heart failure later in life than men, and there has been a suggestion that they also survive longer once they have it.
But because far fewer women than men have been enrolled in heart failure trials over the years, little else is known about the impact of gender on treatment and outcomes in heart failure patients.
Men, Women, and Heart Failure
In an attempt to remedy this, an international team of researchers examined three years of follow-up data on more than 40,000 heart failure patients in the study, published in the European Journal of Heart Failure.
The analysis revealed that:
- The overall death rate was similar for both genders, with about 1 in 4 patients dying during the follow-up.
- When the researchers took age into account, though, men had a 31% higher death risk than women, and male gender was an independent risk factor for death.
- Women with heart failure tended to be older than men (average age, 70 vs. 65) and they were more likely to have a history of high blood pressure (50% vs. 40%).
Heart failure occurs when the heart is unable to pump enough blood to meet the body’s demands.
Common symptoms include shortness of breath, swelling, and tiredness, primarily a result from failure of the left side of the heart, or ventricle, which pumps blood to the rest of the body.
The extent of failure to the left side of the heart is measured with a test known as “ejection fraction.”
A reduced ejection fraction means that the left side of the heart is not able to pump as forcefully as it should.
In the newly published analysis, reduced ejection fraction was associated with a higher risk of death, and men were more likely to have reduced ejection fraction than women (81% vs. 62%).