The RDW index is expressed by which of the following equation?(a) [(20th – 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X K(b) [(20th + 80th) Percentile Volume / (20th – 80th) Percentile Volume] X 100 X K(c) [(20th – 80th) Percentile Volume / (20th – 80th) Percentile Volume] X 100 X K(d) [(20th + 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X KI got this question in an internship interview.Question is taken from Biofeedback Instrumentation in portion Biomedical Recorders of Biomedical Instrumentation

The RDW index is expressed by which of the following equation?(a) [(20

1.	The RDW index is expressed by which of the following equation?(a) [(20th – 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X K(b) [(20th + 80th) Percentile Volume / (20th – 80th) Percentile Volume] X 100 X K(c) [(20th – 80th) Percentile Volume / (20th – 80th) Percentile Volume] X 100 X K(d) [(20th + 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X KI got this question in an internship interview.Question is taken from Biofeedback Instrumentation in portion Biomedical Recorders of Biomedical Instrumentation
Answer» Correct choice is (a) [(20th – 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X K The explanation: The RDW index is expressed by the following equation [(20th – 80th) Percentile Volume / (20th + 80th) Percentile Volume] X 100 X K. It is a numerical expression of the width of the size distribution of red cells. It is derived by ANALOG computation. The total ERYTHROCYTE count is scanned by a CONTINUOUSLY variable thresholding circuit. The upper threshold is moved progressively lower from a level equivalent to 360 femolitres until 20 PERCENT of all erythrocytes present have a size above a certain value.

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