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Monitor blood pressure closely in cold weather

Blood pressure measurements should be carefully monitored in cold or hot weather, concludes a French study in elderly patients.

The study followed 8,800 subjects aged 65 years or older over two years and found systolic blood pressure decreased with increasing temperature, with an 8 mmHg decrease between the lowest and the highest temperatures recorded.

The researchers said carefully monitoring during periods of extreme temperatures was particularly in patients over 80 years.

Arch Intern Med 2009;169:75-80

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