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Although serious complications after hysterectomies
are estimated to occur in around 6 women per 10,000 surgeries, it does
substantially increase a woman's risk of having urinary incontinence,
but often not until years after she has her uterus removed.
Researchers found 45 previous studies which looked
at this association, and then narrowed these down to 12 studies which
met very rigid selection criteria. From these studies, they determined
that:
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Among women age 60 and older, those who had a
hysterectomy were 60% more likely to become incontinent than those
who did not have the surgery.
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Overall, women who had a hysterectomy were about
40% more likely to develop incontinence.
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Dr. Jeanette S. Brown, of the University of California,
San Francisco, and her colleagues recommend that women who are considering
a hysterectomy should be made aware of the potential risk for incontinence.
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She notes that about 90% of the time a hysterectomy
is used to treat non-cancerous health problems like vaginal bleeding
and benign growths in the uterus.
"Women need to decide how much their uterine
symptoms are affecting their quality of life today," Dr. Brown stated.
"Women should weigh what the immediate benefits are of a hysterectomy
versus the long-term risks later in life."
Hysterectomy is the second most common type of major
surgery, being performed on more than 600,000 women in the US each year.
About 40% of all women in the US will have a hysterectomy
by age 60.
For unknown reasons, the increased risk of incontinence
appears to strike women years, or even decades, after having a hysterectomy.
The researchers note that this may occur because hysterectomies may cause
damage to nerves and other parts of the pelvis that may take a while to
cause incontinence.
The
Lancet 2000;356:535-539.
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