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Postural orthostatic tachycardia syndrome (POTS) is a condition characterized by an abnormally large increase in heart rate upon sitting up or standing. [1] POTS is a disorder of the autonomic nervous system that can lead to a variety of symptoms, [10] including lightheadedness, brain fog, blurred vision, weakness, fatigue, headaches, heart palpitations, exercise intolerance, nausea ...
A cascade is a series of events in which one event triggers the next, in a linear fashion. Thus "ischemic cascade" is actually a misnomer, since the events are not always linear: in some cases they are circular, and sometimes one event can cause or be caused by multiple events. [4]
Surgical intervention is required for patients with Pott's disease in the event that there is a need for tissue sampling to clarify diagnoses, resistance to chemotherapy (often found in patients with HIV), neurologic deficits (including but not limited to abnormal reflexes, problems with speech, decreased sensation, loss of balance, decreased ...
A recent study found that features of POTS, such as the change in heart rate or blood pressure when going from laying down to sitting up, can affect the performance of elite swimmers. Why Ledecky ...
Pediatric stroke is a stroke that occurs in children or adolescents. Stroke affects an estimated 2.5 to 13 per 100,000 children annually. [1] The signs and symptoms of stroke in children, infants, and newborns are different from those in adults. The causes and risk factors of stroke in children are also different from those in adults. [2]
Major adverse cardiovascular events (MACE, or major adverse cardiac events) is a composite endpoint frequently used in cardiovascular research. [ 1 ] [ 2 ] Despite widespread use of the term in clinical trials, the definitions of MACE can differ, which makes comparison of similar studies difficult.
Adams–Stokes syndrome, Stokes–Adams syndrome, Gerbec–Morgagni–Adams–Stokes syndrome or GMAS syndrome is a periodic fainting spell in which there is intermittent complete heart block or other high-grade arrhythmia that results in loss of spontaneous circulation and inadequate blood flow to the brain.
Immediately following the event, blood flow and therefore oxygen transport is reduced locally, leading to hypoxia of the cells near the location of the original insult. This can lead to hypoxic cell death ( infarction ) and amplify the original damage from the ischemia ; however, the penumbra area may remain viable for several hours after an ...