Lightning Learning: Orthostatic Hypotension
Orthostatic Hypotension is the fall in blood pressure when transitioning from lying to standing.
>20 mmHg drop in systolic BP
Drop to below
90 mmHg SBP on standing
>10 mmHg drop in diastolic BP with symptoms
Orthostatic Hypotension is an important cause of collapse and lightheadedness. This can result in falls, which is associated with increased morbidity especially in the older person.
Prevalence may be as high as 20% and can have a delayed onset of up to 5 mins in over half of those affected.
Postprandial hypotension occurs in older patients up to 90 minutes after a meal.