Table 3

Conditions that can decrease blood pressure or exacerbate orthostatic hypotension

Dehydration
Time of day (early morning after nocturnal diuresis)
Rising quickly after prolonged sitting or recumbency
Prolonged motionless standing
Physical exertion, especially vigorous or isometric exercise
Alcohol ingestion
Carbohydrate-heavy meals
Heat exposure or fever
Straining during micturition or defecation