| orthostatic h. |
a fall in blood pressure associated with dizziness, blurred vision, and sometimes syncope, occurring upon standing or when standing motionless in a fixed position; it can be acquired or idiopathic, transient or chronic, and may occur alone or secondary to a disorder of the central nervous system such as the Shy-Drager syndrome.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| orthostatic i. |
an abnormal response to standing upright that results from decreased blood pressure and inadequate blood flow to the brain, characterized by a variety of symptoms including lightheadedness, palpitations, tremulousness, visual disturbances, and syncope. It occurs in both acute and chronic forms and is frequently seen as a transient condition in space travelers returning from microgravity. The etiology is unknown but may be related to abnormalities in the autonomic regulation of cardiovascular function.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| orthostatic l.’s |
natural furrows on the neck, due to physiologic skin excess required at certain areas for the purpose of flexion and extension.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| orthostatic p. |
a form of functional proteinuria, usually seen between the ages of ten and twenty, that occurs on standing erect and disappears on lying down.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| orthostatic t. |
disproportionate rapidity of the heart rate on rising from a reclining to a standing position.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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