What is a sinusoidal fetal heart rate pattern?
SINUSOIDAL PATTERN It is also characterized by a stable baseline heart rate of 120 to 160 bpm and absent beat-to-beat variability. It indicates severe fetal anemia, as occurs in cases of Rh disease or severe hypoxia.
What causes sinusoidal fetal heart rate?
FETAL CONDITIONS ASSOCIATED WITH SHR PATTERN: SHR pattern has been reported with the following fetal conditions: (1) severe fetal anemia of several etiologies; (2) effects of drugs, particularly narcotics; (3) fetal asphyxia/hypoxia; (4) fetal infection; (5) fetal cardiac anomalies; (6) fetal sleep cycles; and (7) …
How long does a sinusoidal pattern last?
These authors noted that SHR pattern appeared approximately 19 min following alphaprodine administration and persisted for approximately 60 min. All infants were delivered with normal 5-minute Apgar scores without any perinatal deaths. In 27 cases of sinusoidal FHR pattern during labor, Ayromlooi et al.
What is a normal fetal heart tracing?
Your healthcare provider may do fetal heart monitoring during late pregnancy and labor. The average fetal heart rate is between 110 and 160 beats per minute. It can vary by 5 to 25 beats per minute. The fetal heart rate may change as your baby responds to conditions in your uterus.
What do you mean by sinusoidal?
Definition of sinusoidal : of, relating to, shaped like, or varying according to a sine curve or sine wave sinusoidal motion sinusoidal alternating current sinusoidal grooves.
What is Category 2 fetal heart tracing?
The classification of Category II tracings includes the following: bradycardia with variability, tachycardia, minimal variability, no variability with no recurrent decelerations, marked variability, absence of induced accelerations even after fetal stimulation, recurrent variable decelerations with minimal or moderate …
Can narcotics cause sinusoidal pattern?
Other narcotics, such as butorphanol and nalbuphine, cause a sinusoidal fetal heart rate pattern that can mimic signs of hypoxia, although these drugs do not cause hypoxic injury.
What is sinusoidal trace?
A sinusoidal pattern is an oscillating pattern which is typically smooth and regular. It has a relatively fixed period of 2-5 cycles per minute and has an amplitude of between 5 and 15 bpm around the baseline rate. Baseline variability is absent and there are no accelerations.
Why are sinusoidal signals important?
One reason for the importance of sinusoids is that they are fundamental in physics. Many physical systems that resonate or oscillate produce quasi-sinusoidal motion. Another reason sinusoids are important is that they are eigenfunctions of linear systems (which we’ll say more about in §4.1. 4).
What is another word for sinusoidal?
In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for sinusoidal, like: sinusoid, waveform, amplitude, hysteresis, sinewave, oscillatory, impedance, planar, logarithmic, kinematic and sine wave.