Hyperventilation during labor
| Autor: | Frank C. Miller, Juan J. Arce, Roy H. Petrie, Richard H. Paul, Edward H. Hon |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
Adult
Fetal acidosis Time Factors Adolescent Gestational Age Hypokalemia Fetal Heart Fetus Oxygen Consumption Heart Rate Pregnancy Hyperventilation Humans Medicine Maternal-Fetal Exchange Monitoring Physiologic Baseline values business.industry Obstetrics and Gynecology Alkalosis Venous blood Carbon Dioxide Hydrogen-Ion Concentration Obstetric Labor Complications Oxygen medicine.anatomical_structure Scalp Anesthesia embryonic structures Female Base excess Blood Gas Analysis medicine.symptom business |
| Zdroj: | American Journal of Obstetrics and Gynecology. 120:489-495 |
| ISSN: | 0002-9378 |
| DOI: | 10.1016/0002-9378(74)90627-9 |
| Popis: | The effect of maternal hyperventilation during labor was studied in 20 patients. Fetal scalp blood samples were analyzed for pH, pO 2 , pCO 2 , and base excess and compared with maternal free-flowing venous blood samples taken at the same time. Samples were obtained for baseline values and repeated during and following a period of active hyperventilation. Both maternal and fetal pH rose with hyperventilation. No fetal acidosis was observed even in the 5 cases of severe maternal hypocarbia. Maternal pCO 2 during labor was low even prior to intentional hyperventilation. Both maternal and fetal pCO 2 decreased, the maternal change being greater than the fetal. There was a slight but statistically significant decrease in the fetal pO 2 during hyperventilation. However, fetal oxygen levels remained within physiologic range throughout the study. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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