Key points from article :
One off readings suffer from white coat and masked hypertension.
White coat hypertension is where BP spikes in doctor's surgery.
Worse is masked, or missed, hypertension where it's not spotted.
People with masked hypertension had a 283% increased risk of death
24-hour monitoring had the greatest power to predict chances of death.
Most GP surgeries have limited number of 24-hour blood pressure monitors.
Study of 64,000 Spanish adults with 5 year follow up.
The study was published in the New England Journal of Medicine.
COMMENT: particularly important for mothers who experienced pre-eclampsia