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A normal nonstress test will show a baseline fetal heart rate between 110 and 160 beats per minute with moderate variability (5- to 25-interbeat variability) and 2 qualifying accelerations in 20 minutes with no decelerations. "Reactive" is defined as the presence of two or more fetal heart rate accelerations within a 20-minute period. Each ...
Fetal echocardiography, or Fetal echocardiogram, is the name of the test used to diagnose cardiac conditions in the fetal stage. Cardiac defects are amongst the most common birth defects. Their diagnosis is important in the fetal stage as it might help provide an opportunity to plan and manage the baby as and when the baby is born.
A saltatory pattern of fetal heart rate is defined in cardiotocography (CTG) guidelines by FIGO as fetal heart rate (FHR) baseline amplitude changes of more than 25 beats per minute (bpm) with a duration of >30 minutes. [25] [27]
The presence of these biophysical variables implies absence of significant central nervous system hypoxemia/acidemia at the time of testing. By comparison, a compromised fetus typically exhibits loss of accelerations of the fetal heart rate (FHR), decreased body movement and breathing, hypotonia, and, less acutely, decreased amniotic fluid volume.
[1] [11] [6] Therefore, the congenital heart block is usually diagnosed during a routine obstetrical ultra sound. [1] The first symptom in most cases is a slow heart rate which can be detected using fetal echocardiogram and Doppler ultra sound techniques between the weeks 18 - 30.
Measurement of fetal proteins in maternal serum is a part of standard prenatal screening for fetal aneuploidy and neural tube defects. [ 27 ] [ 28 ] Computational predictive model shows that extensive and diverse feto-maternal protein trafficking occurs during pregnancy and can be readily detected non-invasively in maternal whole blood . [ 29 ]
A fetal phonocardiogram (or fPCG) is a specialized application of phonocardiography designed to be a non-invasive diagnostic technique to capture the sounds of the fetal heart in utero. These fetal phonocardiograms can be analyzed to detect any abnormalities in the fetal heart.
Measurement of fetal length (known as the crown-rump length) Fetal number, including number of amnionic sacs and chorionic sacs for multiple gestations; Embryonic/fetal cardiac activity; Assessment of embryonic/fetal anatomy appropriate for the first trimester; Evaluation of the maternal uterus, tubes, ovaries, and surrounding structures