Hematocrit Blood Test Topic Guide
Hematocrit (Blood Test): A hematocrit blood test measures the portion of red blood cells in the blood. Normal values of hematocrit in the blood vary according to age, sex, pregnancy, altitude where a person lives, and vary slightly between testing methods. Causes of low hematocrit levels in the blood may be due to bleeding disorders, destruction of red blood cells, cancer, anemia, and overhydration. High hematocrit levels may be caused by dehydration, smoking, pulmonary conditions, COPD, sleep apnea, and polycythemia vera.
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Sleep Apnea (Obstructive and Central) There are two types of sleep apnea, obstructive sleep apnea (the most common type) and central sleep apnea. Sleep apnea can be caused by many factors such as strokes, heart failure, medications, or physical structures in the throat and mouth. Treatment range from medical devices to surgery.