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Xanthochromia, from the Greek xanthos (ξανθός) "yellow" and chroma (χρώμα) "colour", is the yellowish appearance of cerebrospinal fluid that occurs several hours after bleeding into the subarachnoid space caused by certain medical conditions, most commonly subarachnoid hemorrhage. [1]
The risk continues to rise with age and is 60 percent higher in the very elderly (over 85) than in those between 45 and 55. [90] Risk of SAH is about 25 percent higher in women over 55 compared to men the same age, probably reflecting the hormonal changes that result from the menopause , such as a decrease in estrogen levels.
However, patients with confirmed CSF leaks may also demonstrate completely normal opening pressures. In 18–46% of cases, the CSF pressure is measured within the normal range. [24] [73] [74] [75] Analysis of spinal fluid may demonstrate lymphocytic pleocytosis and elevated protein content or xanthochromia. This is hypothesized to be due to ...
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
Blood viscosity is a measure of the resistance of blood to flow. It can also be described as the thickness and stickiness of blood. This biophysical property makes it a critical determinant of friction against the vessel walls, the rate of venous return, the work required for the heart to pump blood, and how much oxygen is transported to tissues and organs.
Analyzing intricate tattoos found on 1,000-year-old mummies, the team discovered puncture lines between 0.1 to 0.2 millimeters wide in patterns reminiscent of details found on Chancay pottery and ...
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Lumbar puncture may demonstrate ... rate is estimated at 10 percent [4] ... races with an average incidence of 16.5/100,000 in men and 19/100,000 in women. The ...