Continuous on-line optical absorbance recording of blood volume changes during hemodialysis
| Autor: | Pietro Zucchelli, Marco Spongano, Elena Mancini, Francesco Paolini, Antonio Santoro, Marco Rossi |
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| Rok vydání: | 1993 |
| Předmět: |
medicine.medical_specialty
Optics and Photonics medicine.medical_treatment Biomedical Engineering Medicine (miscellaneous) Bioengineering Blood volume Hemoglobin levels Absorption Biomaterials Hemoglobins Microcomputers Renal Dialysis Hypovolemia medicine Humans skin and connective tissue diseases Dialysis Monitoring Physiologic Optical absorbance Blood Volume Determination business.industry General Medicine Surgery Personal computer sense organs Hemoglobin Hemodialysis medicine.symptom business Biomedical engineering |
| Zdroj: | Artificial organs. 17(8) |
| ISSN: | 0160-564X |
| Popis: | Conventional techniques that measure blood volume changes during hemodialysis are invasive, hard to reproduce, and provide only intermittent evaluations. To overcome these drawbacks, we have developed an optoelectronic instrument that estimates intradialytic blood volume percentage changes by the optical absorbance of blood. This device is based on the absorption of light transmitted through blood, which is directly related to the hemoglobin concentration. A personal computer interfaced to the device provides a continuous on-line graphic display of the hemoglobin levels and the percentage changes in blood volume. The noninvasive measurement of dialysis blood volume changes by an optical method may be helpful in detecting the appearance of severe hypovolemia that can be dangerous in critically ill patients. |
| Databáze: | OpenAIRE |
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