[Spontaneous changes in cardiovascular functions in guinea pig fetuses].
During the last half of pregnancy, in fetal guinea pigs studied have been made on the blood pressure in the navelstring artery, the placental connection of the fetus remaining intact. During prolonged experiments, fetal circulation exhibited spontaneous fluctuations in the form of reversible bradycardia and the decrease in the blood pressure. These changes were not associated with motor activity of the fetus. Age peculiarities of these fluctuations reflected the degree of maturity of circulation control mechanisms during prenatal development of animals.
D000818:Animals; D001794:Blood Pressure; D002320:Cardiovascular Physiological Phenomena; D002319:Cardiovascular System / Q000196:embryology*; D005260:Female; D005325:Fetal Organ Maturity; D005865:Gestational Age; D006168:Guinea Pigs; D006339:Heart Rate; D011247:Pregnancy
Spontannye izmeneniia serdechno-sosudistykh funktsiĭ u plodov morskoi svinki.