orthostatic


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orthostatic

[¦ȯr·thə¦stad·ik]
(medicine)
Pertaining to or caused by standing upright.
References in periodicals archive ?
Scores of nine or higher suggest orthostatic intolerance.
On day 11 post-chemotherapy treatment, he was discharged home to continue with all oral repletions for orthostatic hypotension, as well as 2 liters normal saline to be given daily via central line.
More recent studies have employed lower-body negative pressure (LBNP) as a surrogate for orthostatic stress.
It is important to distinguish between neurogenic and non-neurogenic causes of orthostatic hypotension.
POTS in adolescents is characterized by an increase in heart rate, either by 40 bpm or to the rate of >120 bpm for ages 14 years and older or 130 bpm for ages 13 years and younger within the first 10 minutes of a change from supine to upright position without orthostatic hypotension [4].
Those who did suffer with delayed orthostatic hypotension had death rates of 29% over the decade (9% in healthy subjects) and their rates of degenerative disease (such as Parkinson's or dementia) was 31%, compared to 8%.
[1] Reflex syncope can be further categorised into vasovagal syncope (from emotional or orthostatic stress); situational syncope (due to specific situational stressors such as micturition, vomiting and defecation); carotid sinus syncope (from pressure on the carotid sinus, e.g.
M had a history of orthostatic hypotension, he was later noted to have supine hypertension.
The pediatric evidence base is much smaller than the adult evidence base, and many more data are needed to understand the disease in children, but the available evidence is sufficient to show that "orthostatic intolerance and autonomic dysfunction are common in pediatric ME/CFS, that the neurocognitive abnormalities--while not present at baseline when patients are tested in the supine position--will emerge when patients are tested under conditions of orthostatic stress or if another condition like distraction is introduced," he said.
Also in some nonstationary cases PPG signal amplitude changes considerably, e.g., deep inspiratory gasp [9] or during orthostatic test (see signal example Fig.