Search results
Results from the WOW.Com Content Network
The heart adapts to the increased cardiac demand that occurs during pregnancy in many ways. Cardiac output (Lit./Min.): 6.26; Stroke Volume (Ml.): 75; Heart Rate (Per min.): 85; Blood Pressure: Unaffected; Cardiac output increases throughout early pregnancy, and peaks in the third trimester, usually to 30-50% above baseline. [6]
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 ...
increased or decreased fetal heart rate (tachycardia and bradycardia), especially during and after a contraction; decreased variability in the fetal heart rate; late decelerations; Biochemical signs, assessed by collecting a small sample of baby's blood from a scalp prick through the open cervix in labor fetal metabolic acidosis
During pregnancy, the female body goes through a variety of physical changes, including additional blood in the body, faster heart rate, increased work on the kidneys, deeper breathing, and ...
Cardiac activity is visible beginning at approximately 5 weeks of pregnancy. The human heart begins beating at a rate near the mother's, about 75-80 beats per minute (BPM). The embryonic heart rate (EHR) then accelerates linearly for the first month of beating, peaking at 165-185 BPM during the early 7th week, (early 9th week after the LMP).
A contraction stress test (CST) is performed near the end of pregnancy (34 weeks' gestation) to determine how well the fetus will cope with the contractions of childbirth. The aim is to induce contractions and monitor the fetus to check for heart rate abnormalities using a cardiotocograph. A CST is one type of antenatal fetal surveillance ...
Cardiotocography sound Schematic explanation of cardiotocography: heart rate (A) is calculated from fetal heart motion determined by ultrasound, and uterine contractions are measured by a tocodynamometer (B). These numbers are represented on a time scale with the help of a running piece of paper, producing a graphical representation.
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.