|
ABCD predicts stroke risk after 'mini-stroke'
Last Updated: 2005-06-24 14:17:06 -0400 (Reuters Health)
NEW YORK (Reuters Health) - A scoring system based on a patient's age,
blood pressure, clinical features and duration of symptoms -- the ABCD
score -- can be used to estimate the risk of a full-blown stroke in the
7 days after a TIA or 'mini-stroke', British investigators report.
Apart from identifying patients who should get emergency care, the risk
score will also be useful for raising people's awareness of the symptoms
of stroke, Dr. Peter M. Rothwell, from the University of Oxford, and his
colleagues note in their report in The Lancet medical journal.
Rothwell's team studied a population-based group of 209 patients with
TIA, among whom 18 suffered strokes within 7 days.
The researchers investigation generated a 6-point score based on age (60
years or older = 1 point), blood pressure (greater than 140/90 mm Hg =
1), clinical features of TIA (one-sided weakness = 2, speech disturbance
without weakness = 1, other = 0), and duration (60 minutes or longer =
2, 10 to 59 minutes = 1, less than 10 = 0).
The team validated the risk score in a second population-based group of
375 people with TIA. Nineteen of the 20 strokes that occurred within 7
days in this group occurred in patients with a risk score of 5 or 6.
"An ABCD score of 6 necessitates not only emergency investigation and
treatment but also admission to hospital during the acute phase,"
Rothwell and colleagues advise. Even if a stroke can't be prevented,
they point out, being in the hospital should allow for immediate
clot-clearing treatment if one occurs.
SOURCE: Lancet, online June 21, 2005.
|
