Using this technique, real-time changes in systemic vascular resistance, stroke volume and cardiac output can be non-invasively measured during orthostatic stress.
There was a marked improvement in patients' orthostatic symptoms.
Can heart rate variability analysis predict response to orthostatic testing in children?
Patients who showed an improvement in orthostatic tolerance were those whose salt excretion prior to the study was less than 170 mmol/ day.
The investigators examined orthostatic tolerance using head-up tilt and lowerbody suction.
Neurohumoral changes also become important in maintaining these haemodynamic changes if orthostatic stress is prolonged.
Causes of orthostatic hypotension in older adults referred to a regional syncope service.
Tricyclic antidepressants are effective but can produce troublesome adverse effects, such as orthostatic hypotension and confusion in elderly patients.
