orthostasis


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orthostasis

[-stā′sis]
maintenance of an upright standing posture. In some medical tests a patient may need to maintain orthostasis for a long period to stimulate a rise in aldosterone concentration.
References in periodicals archive ?
However, due to his significant orthostasis and need for further cisplatin therapy for curative intent, his treatment was expanded to pharmacological management with fludrocortisone and midodrine.
disorder (RBD) Autonomic Higher prevalence of orthostatic hypotension dysfunction and autonomic neuropathy in dementia compared with controls; DLB and PDD had significantly worse dysfunction than those with AD or VAD and controls; impairments in all parasympathetic tests (deep breathing and respiratory sinus arrhythmia, orthostasis, Valsalva ratio) and in the orthostasis test for sympathetic function (change in blood pressure) were found in DLB only.
Urinary protein excretion in normal individuals: diurnal changes, influences of orthostasis and relationship to the renin-angiotensin system.
Where would you look for the definition of orthostasis if you did not know the criteria?
Primary neuro-cardiogenic syncope was the most prevalent mechanism in 78% of the subjects, followed by orthostasis in another 17% with no significant differences between boys and girls.
He noted increasing shortness of breath, orthostasis, and lethargy for the past two days.
Physical examination revealed orthostasis, mild tachycardia, and costovertebral tenderness, but no fever.
In the short-term studies, the drug was associated with limited effects on body weight, metabolic lab parameters, orthostasis, prolactin levels, and extrapyramidal symptoms.
The aim of this study was to evaluate the cardiac autonomic regulation in children with ADHD at the rest and during orthostasis using short-term heart rate variability (HRV) analysis.
Orthostatic tolerance tests in the fourth week of Ramadan fasting revealed an augmented rise in the heart rate response and a decrease in pulse pressure during orthostasis compared to before and 2 months after Ramadan 28.
Plasma neurotransmitters, blood pressure and heart rate during supine-resting, orthostasis and moderate exercise stress test in healthy humans before and after parasympathetic blockade with atropine.