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Updated 27 September 2013

Sepsis rates during childbirth up in US

In a disturbing trend, rates of severe sepsis and deaths from sepsis during childbirth rose sharply in the United States over a 10-year period.

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In a disturbing trend, rates of severe sepsis and deaths from sepsis during childbirth rose sharply in the United States over a 10-year period, a new study reveals.

The researchers said their findings show the need for improved detection of sepsis in all women during labour and delivery, even those with no apparent risk factors for sepsis, a severe illness in which bacteria overwhelm the bloodstream.

For the study, Dr Melissa Bauer, of the University of Michigan Health System in Ann Arbor, and colleagues analysed national data from 1998 through 2008 and found that, overall, sepsis occurred at a rate of one per every 3 333 women who were in a hospital to give birth. The rate did not change significantly over the study period.

Severe sepsis which can lead to multiple organ failure occurred in about one in 11 000 women. The rate of severe sepsis approximately doubled from 1998 to 2008: from about one in 15 400 to one in 7 250 women in labour.

Fatal sepsis occurred in about one in 106 000 cases. Both severe and fatal sepsis increased by about 10% per year, found the study in the October issue of the journal Anesthesia & Analgesia.

Increased risk factors

Several medical conditions were associated with an increased risk of severe sepsis, including congestive heart failure, chronic liver and kidney disease, and lupus. Cerclage, or "cervical stitch", which is done to prevent premature birth was another significant risk factor, according to a journal news release.

Similar to risk factors for other complications of labour and delivery, other factors associated with an increased risk of severe sepsis included older age, being black, and having Medicaid insurance.

But none of these factors explained more than 6% of the sepsis cases. Many women who developed severe or fatal sepsis during labour and delivery had no known risk factors, according to Bauer's team.

The data did not reveal what might be causing the sharp increase in severe and fatal sepsis during labour and delivery, but it may be due to factors "such as increasing microbial resistance, obesity, smoking, substance abuse and poor general health," the study authors wrote.

The finding that many cases of severe and fatal sepsis occur in women with no apparent risk factors "underscores the need for developing systems of care that increase sensitivity for disease detection across the entire population," the researchers concluded.

More information

The U.S. National Library of Medicine has more about sepsis.

 
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