Continuous, in vivo pulmonary venous admixture from fiberoptically measured hemoglobin saturations
| Autor: | Tommy Symreng, Gagan D. Kamal, James Starr |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Lung Diseases
medicine.medical_specialty Swine Oleic Acids Critical Care and Intensive Care Medicine Hemoglobins In vivo Internal medicine Venous admixture medicine Animals Fiber Optic Technology Oximetry Blood gas analysis business.industry Reproducibility of Results Oxygen Disease Models Animal Evaluation Studies as Topic Catheterization Swan-Ganz Anesthesia Cardiology Arterial blood Hemoglobin Blood Gas Analysis Mixed venous blood business Oleic Acid |
| Zdroj: | Critical Care Medicine. 18:1419-1422 |
| ISSN: | 0090-3493 |
| DOI: | 10.1097/00003246-199012000-00022 |
| Popis: | In six anesthetized swine, pulmonary venous admixture (Qsp/Qt) was calculated by four methods: a) Qsp/Qt 1, fiberoptically measured arterial and mixed venous Hgb saturation (SaO2 and SvO2), PaO2 and PvO2 derived from saturations; b) Qsp/Qt 2, fiberoptically measured SaO2 and SvO2, PaO2 and PvO2 measured by blood gas analysis; c) Qsp/Qt 3, PaO2 and PvO2 measured by blood gas analysis, SaO2 and SvO2 derived from tensions; d) Qsp/Qt 4, SaO2 and SvO2 measured by bench oximetry, PaO2 and PvO2 derived from saturations. Input from the fiberoptic catheters was fed into a computer programmed to calculate Qsp/Qt 1 every 20 sec. Fifty-eight of these values were compared with simultaneously calculated Qsp/Qt 2, 3, and 4. There was no difference between fiberoptic and derived SaO2 or fiberoptic and cooximetric SvO2. Correlations and slopes for Qsp/Qt 1 with Qsp/Qt 2, 3, and 4 were significant (p less than .05). Comparing mean differences, Qsp/Qt 1 was significantly different only from Qsp/Qt 3 (p less than .01). We conclude that dual oximetry reliably tracks Qsp/Qt. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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