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Tumors need nutrient: When tumors grow in the brain, they make new blood vessels (angiogenesis). These vessels are not normal compared to the non-tumor vessels. As a result, more blood flows into the tumor, which allows for more tumor growth. Since there is more flow, at any given time there is more blood volume in the tumor. Occasionally, there may be so much flow that it can shunt, or divert, flow from normal brain. ...Read more
Damaged area: The volume loss represents the loss of tisdsue that has been damaged. The volume of loss may not correlate with the intelligence of an individual or the degree of motor handicap. You need to review the matter with a pediatric neurologist who can look at the neuroimaging with you to explain the significance. ...Read more
Stroke volume: Cardiac output is determined by heart rate and volume of blood pumped by heart in each heartbeat (stroke volume). Increased fluid volume increases the stroke volume and therefore cardiac output. Decreased fluid volume decreases the stroke volume and therefore cardiac output. ...Read moreSee 1 more doctor answer
Mom is 79 brain CT scan: moderate cerebral volume loss, mild widening of the cortical sulci, mild white matter microvasc. Ischemic disease serious?
Depends: Most likely these are aging changes that have occurred with time. ...Read more
Do beta-blockers decrease cerebral blood flow? What meds increase cerebral blood flow through cerebral vasodilation?
Respiratory volumes: Tidal volume is the amount of air you inspire (bring in) with a normal breath. Usually around 500ml. Inspiratory reserve volume is the max amount you can suck in after a normal inspiration. Expiratory reserve volume is the max amount you can push out after a normal expiration. Vital capacity is the most air you can breathe out after taking the deepest breath in. ...Read more
Difference in vessel: This is a protective mechanism. The vessels in the brain dont have as much ability to contract compared to peripheral blood vessels. The brain is the main server of the body and has to be protected to keep the rest of the body functioning. The peripheral vessels constricting causes shunting of the blood towards the path of least resistance. ...Read more
How can decreased cardiac output be caused by either increased fluid volume and decreased fluid volume?
Routine scan showed lack of fluid in csp- cerebral dysgenesis was noted- Is this cerebral palsy indicator?
Confusing question: Cerebral Palsy is a pattern of impaired movement and posture related to an injury to the brains motor cortex that occurred during development.Cerebral dysgenisis is just a label for poorly developed areas of brain,possibly from injury . CP would be the expected outcome if the dysgenisis effected the motor areas of the brain, while it would not if the motor area was not involved. ...Read more
Ventricular system and extra ventricular CSF spaces show mild prominence, suggestive of mild cerebral atrophy.
Patient can't walk. Age 26 years male.?
Starling mechanism: You mean how does venous pressure regulate cardiac output.similar to the Starling mechanism-by increasing pre load. Up to a certain point cardiac output is directionally proportional to venous pressure assuming that everything else is the same such as the after load or cardiac contractility ...Read more