Orthostatic hypotension has several causes.
- Hypovolemia is the most common cause. It may be due to:
- Impaired autonomic (nerve) reflex due to certain diseases:
- Decreased heart muscle contractility or vascular responsiveness
- Certain drugs:
- Phenothiazine antipsychotic drugs ( chlorpromazine , promazine, thioridazine )
- Atypical antipsychotics (eg, Seroquel )
A risk factor is something that increases your chance of getting a disease or condition.
Risk factors include:
- Increased age
Use of certain drugs:
- Loop diuretics
- MAO inhibitors
- Tricyclic antidepressants
- Tetracyclic antidepressants
- Phenothiazine antipsychotic drugs
- Inadequate fluid intake
- Prolonged bedrest
- Certain diseases or conditions:
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