A new report by the Centers for Disease Control and Prevention indicates that maternal heart failure is more common than previously thought and may be more prevalent than previously believed.
The report was published Tuesday in the Journal of the American Medical Association and highlights the potential risks to women of reproductive age.
It found that the rate of maternal mortality is higher in the United States than the world average, and the rate for women aged 20 to 49 is twice as high as in countries like the United Kingdom and Canada.
The study also noted that more than two-thirds of women in the U.S. are at risk of developing a heart attack.
The CDC estimates that approximately 5 million women in this age group are at a risk of heart failure.
The research also found that maternal mortality rates in the country have increased steadily over the past two decades, even though the number of pregnancies has remained relatively constant.
The rate of deaths from maternal heart failures in the past 20 years has nearly doubled, according to the study, which was funded by the National Institutes of Health and the American Heart Association.
“As we look at the risks to pregnant women, we know that the maternal death rate is increasing,” said Dr. Jennifer Cavanagh, a medical epidemiologist at the CDC.
“But we need to understand how the risk of maternal heart attacks is related to the risk for women who are trying to conceive.”
Researchers looked at data from the National Vital Statistics System and identified the most recent year for which data was available.
They then compared the rate in the population aged 40 and over with the rate at the time of birth, which is defined as the age when women are most likely to be pregnant.
The researchers found that while rates of maternal death increased from 1990 to 2000, the rate dropped in recent years.
The authors say they believe the change in the rates reflects changes in health care and maternal and child care practices.
The data shows that the increase in maternal mortality in the US is associated with increases in the number and severity of maternal deaths, especially among older women.
It also indicates that increased maternal mortality has become a greater risk for older women, even if the increased mortality is not related to higher risk factors for cardiovascular disease or cancer.
The researchers also note that the mortality rates are likely to vary significantly across the country, and that this may change as more data is collected.
They also note there are many factors that contribute to maternal death, including maternal age, the number, quality and duration of prenatal care, the duration of hospitalization, and socioeconomic status.
Maternal heart failure has been linked to the development of heart disease in the fetus, which can affect the child’s development.
The CDC is not recommending any specific medical interventions for women with heart failure, including blood pressure control or anti-inflammatory drugs, but says it encourages women to talk with their health care provider about their options.
“We do not recommend that women with preeclampsia or high blood pressure use a birth control method because of the risk to their unborn child,” Dr. David Mazzucato, a CDC expert on maternal heart health, said in a statement.
“The evidence is that women who have preeclampias and/or hypertension do not develop any additional risk factors to cardiovascular disease later in life.”