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A souffle (English: / ˈ s uː f əl /) [a] is a vascular or cardiac murmur with a blowing quality when heard on auscultation. It is particularly used to describe vascular murmurs or transmitter heart sounds which occur during pregnancy, either from the uterus and breasts of the mother, or from the fetus.
The fetal circulation is composed of the placenta, umbilical blood vessels encapsulated by the umbilical cord, heart and systemic blood vessels. A major difference between the fetal circulation and postnatal circulation is that the lungs are not used during the fetal stage resulting in the presence of shunts to move oxygenated blood and ...
Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb).
Anatomy scan image of a human placenta and umbilical cord (colour Doppler rendering) showing central placement of the cord in the placenta and three vessels in the cord, which is the normal physiology. A standard anatomy scan typically includes: [4] Fetal number, including number of amnionic sacs and chorionic sacs for multiple gestations
A catheter may be inserted into one of the umbilical arteries of critically ill babies for drawing blood for testing. [6] This is a common procedure in neonatal intensive care, and can often be performed until 2 weeks after birth (when the arteries start to decay too much). [7]
Immediately after delivery, the fundus of the uterus begins to contract. This is to deliver the placenta which can take up to 30 minutes and may involve a feeling of chills. [8] In a normal and healthy response it should feel firm and not boggy. It begins to involute with contractions of the smooth muscle of the uterus. It will contract midline ...
Placenta shown with attached fetal membranes The fetal membranes surround the developing embryo and form the fetal-maternal interface . [ 3 ] The fetal membranes are derived from the trophoblast layer (outer layer of cells) of the implanting blastocyst . [ 3 ]
The placenta can be defined as an organ formed by the sustained apposition or fusion of fetal membranes and parental tissue for physiological exchange. [1] This definition is modified from the original Mossman (1937) [2] definition, which constrained placentation in animals to only those instances where it occurred in the uterus.