Factors that may influence postural hypotension
| Speed of positional change |
|---|
| Time of day (worse in the morning) |
| Prolonged recumbency |
| Warm environment (hot weather, central heating, hot bath) |
| Raising intrathoracic pressure: micturition, defaecation or coughing |
| Food and alcohol ingestion |
| Physical exertion |
| Manoeuvres and positions (bending forward, abdominal compression, leg crossing, squatting, activating calf muscle pump)2-150 |
| Drugs with vasoactive properties (including dopaminergic agents) |
↵2-150 These manoeuvres usually reduce the postural fall in blood pressure, unlike the others.