Continuous Assessment of Cardiopulmonary Function
| Autor: | J. B. Downs |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
medicine.medical_specialty
business.industry medicine.medical_treatment Apparent oxygen utilisation Oxygenation respiratory system Oxygen tension Pulmonary function testing Alveolar gas equation Oxygen therapy medicine Arterial blood Continuous positive airway pressure Intensive care medicine business |
| Zdroj: | Update 1990 ISBN: 9783540522690 |
| DOI: | 10.1007/978-3-642-84125-5_46 |
| Popis: | “Assessment” of oxygenation may entail measurement and calculation of a variety of physiologic variables. However, the oxygen tension of arterial blood (PaO2) is by far the most common measurement utilized in determining the “adequacy” of oxygenation. Because of the ease of measurement, PaO2 often is used as a guide to oxygen therapy, ventilator adjustment, and other therapeutic interventions. Some clinicians have suggested a mathematical manipulation of PaO2, alone or in combination with other variables, to improve diagnostic accuracy and assessment of pulmonary function. The perceived advantage of using the alveolar-arterial O2 tension difference (AAD), the arterial/alveolar oxygen tension ratio (AAI), the PaO2/F1O2 ratio (PFI), etc., rather than the PaO2 alone, often is far greater than the actual advantage. It is apparent that the ease and efficiency of measurements and calculations have played a greater role in the determination of monitoring practices than accuracy and efficacy. Because of advances in monitoring technology during the last decade, a reassessment of monitoring techniques is indicated. |
| Databáze: | OpenAIRE |
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