The Importance of Correct Norms in Blood Volume Measurement
| Autor: | Joseph Feldschuh, Stuart D. Katz |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Body surface area
Systematic error medicine.medical_specialty Blood Volume Blood Volume Determination Body Surface Area business.industry Body Weight education Blood volume General Medicine humanities Surgery Categorization Predictive Value of Tests Reference Values Ideal weight Blood volume measurement Statistics medicine Humans Norm (social) business Research setting |
| Zdroj: | The American Journal of the Medical Sciences. 334:41-46 |
| ISSN: | 0002-9629 |
| DOI: | 10.1097/maj.0b013e318063c707 |
| Popis: | Accurate individual norms are required for blood volume measurement to be useful in a clinical setting. The primary physiological determinant of normal blood volume is body composition. Norms have been developed based on weight and body surface area, but these have systematic errors arising from variations in body composition or body size. The only norm that specifically estimates body composition uses deviation from ideal weight. A clinically useful norm must also include a normal range that is sufficiently sensitive and specific. The ultimate test of a norm's effectiveness is how it relates to known physiological factors or outcomes in a clinical or research setting. When tested in relation to outcome results from previously published clinical studies, norms utilizing deviation from ideal weight provide the most accurate categorization of blood volume status. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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