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Quantity of Diagnostic Blood Sampling and Its Clinical Relevance
Author(s) -
HELIN PEKKA,
VIDEBÆK AAGE
Publication year - 1972
Publication title -
scandinavian journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.904
H-Index - 84
eISSN - 1600-0609
pISSN - 0036-553X
DOI - 10.1111/j.1600-0609.1972.tb00997.x
Subject(s) - venipuncture , medicine , blood sampling , sampling (signal processing) , clinical significance , surgery , filter (signal processing) , computer science , computer vision
For each of 155 consecutive patients admitted to a medical ward was measured the amount of blood drawn for laboratory studies throughout the stay in hospital. 90 % of the patients had drawn less than a total of 200 g blood and 5 % more than a total of 300 g. The average loss per day was 9.5 g and per venipuncture 26.8 g. The quantity of blood drawn diagnostically is so large that blood sampling should be avoided during a red‐cell survival study. The influence of the blood loss upon the haemoglobin and haematocrit values was studied by a regression analysis which could be carried through for 72 of the patients. 4 patients only showed silghtly decreasing values which most likely should be ascribed to the diagnostic blood sampling.