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hyperdynamic circulation
Hyperdynamic circulation is abnormally increased circulatory volume. Systemic vasodilation and the associated decrease in peripheral vascular resistance results in decreased pulmonary capillary wedge pressure and decreased blood pressure, often presenting with a collapsing pulse. In effort to compensate the heart will increase cardiac output and heart rate, which accounts for the decreased pulse pressure and sinus tachycardia.〔Mosby's Medical Dictionary, 8th edition. S.v. "hyperdynamic circulation." Retrieved July 28, 2010 from http://medical-dictionary.thefreedictionary.com/hyperdynamic+circulation〕 The condition sometimes accompanies septic shock, preeclampsia, and other physiological and psychiatric conditions.
== Possible causes ==
*Kidney disease
*Hypervolemia
*Anemia
*Anxiety
*Aortic Regurgitation〔Sattar, Hussain A. Pathoma: Fundamentals of Pathology. Pathoma LLC (2011); p. 80.〕
*AV fistulae
*Beriberi
*Dysautonomia
*Erythroderma
*Exercise
*Liver failure
*Hydrocephalus〔Greitz, Dan. Radiological Assessment of hydrocephalus: new theories and implications for therapy. Neurosurg Rev (2004) 27: 145-165.〕
*Hypercapnia
*Paget's disease
*Portal hypertension
*Pregnancy
*Pyrexia
*Thyrotoxicosis
*Vasodilator drugs
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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