Fetal electrocardiography
| Autor: | M J Lamkee, R R De Alvarez, H W Huntington |
|---|---|
| Rok vydání: | 1962 |
| Předmět: |
Tachycardia
Fetus medicine.medical_specialty Pregnancy medicine.diagnostic_test business.industry Fetal pole Obstetrics and Gynecology Fetal position medicine.disease Fetal Tachycardia QRS complex Internal medicine embryonic structures medicine Cardiology medicine.symptom business Electrocardiography |
| Zdroj: | American Journal of Obstetrics and Gynecology. 83:1622-1628 |
| ISSN: | 0002-9378 |
| Popis: | 1. 1. Fifty-one fetal electrocardiograms taken from 37 pregnant women, from 12 to 43 weeks from their last menstrual period during uncomplicated pregnancies, are reported in an attempt to define further the normal fetal tracing. 2. 2. It is possible to obtain good quality fetal electrocardiograms with a simple technique and a high amplification system in most patients after 12 weeks; the procedure requires only 8 to 10 minutes. 3. 3. The normal fetal heart rate declines from an average of about 165 beats per minute at 12 weeks of gestation to 130 at term. 4. 4. The sex of the fetus has no effect on the fetal heart rate. 5. 5. Maternal tachycardia can possibly be correlated with fetal tachycardia. 6. 6. The normal fetal QRS is 0.02 second in duration early in pregnancy widening to nearly 0.04 second at term. 7. 7. The normal fetal QRS amplitude is minimal during the thirtieth to the thirty-second week, excluding the first 12 weeks of pregnancy. 8. 8. Fetal position can roughly be determined by a spacial vector approach to fetal electrocardiography. 9. 9. The fetal heart rate may be moderately inaccurate when determined via auscultation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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