Aortic function during normal human pregnancy
| Autor: | Mark V. Hart, Jeffrey D. Hosenpud, Mark J. Morton, James Metcalfe |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Adult
medicine.medical_specialty Adolescent Diastole Hemodynamics Blood Pressure Dissection (medical) Electrocardiography Pregnancy medicine.artery Internal medicine medicine Humans Aorta business.industry Postpartum Period Obstetrics and Gynecology medicine.disease Parity medicine.anatomical_structure Blood pressure Echocardiography Vascular resistance Cardiology Female Vascular Resistance business Artery |
| Zdroj: | American journal of obstetrics and gynecology. 154(4) |
| ISSN: | 0002-9378 |
| Popis: | Arterial rupture and dissection have been observed in both normal and complicated pregnancies. To understand how arterial mechanical properties might change during pregnancy, we measured aortic root diameter by M-mode echocardiography and obtained simultaneous cuff blood pressures during systole and diastole at rest and during isometric exercise. Measurements were obtained in 19 women at the end of normal gestation and again 3 to 6 months post partum. The aorta is larger and more compliant during normal human pregnancy, and these changes may not revert to prepregnant levels post partum. Increased aortic compliance, combined with decreased vascular resistance, may enhance left ventricular performance in normal pregnancy. Conversely, the presumed structural alterations leading to increased compliance may weaken diseased vessels leading to dissection or rupture during pregnancy. |
| Databáze: | OpenAIRE |
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