The cardiovascular manifestations of hyperthyroidism include an increase in heart rate, stroke volume, and cardiac output. Peripheral vascular resistance is decreased, and thus there is a widened pulse pressure. All of these lead to an increase in myocardial oxygen consumption and therefore may ... Views: 716
The causes of ischemic cerebrovascular disorders, including TIA and cerebral infarction, can be classified on the basis of the site of the source for the arterial blockage (embolus from a proximal site or thrombosis in situ from distal causes) within the vascular system, starting from most ... Views: 924
Human immunodeficiency virus (HIV) belongs to the family Retroviridae, subfamily Lentiviridae. Retroviridae organisms share a distinct biologic characteristic: an initial stage of primary infection followed by a relatively asymptomatic period of months to years and a final stage of overt ... Views: 621