fetal heart rate

(redirected from Fetal Heart Tones)
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fe·tal heart rate (FHR),

in the fetus, the number of heartbeats per minute, normally 120-160.

fetal heart rate (FHR)

the number of heartbeats in the fetus that occur in a given unit of time. The FHR varies in cycles of fetal rest and activity and is affected by many factors, including maternal fever, uterine contractions, maternal-fetal hypotension, and many drugs. The normal FHR is between 110 beats/min and 160 beats/min. In labor the FHR is monitored with a fetoscope, an electronic fetal monitor for detecting abnormal alterations in the heart rate, especially recurrent decelerations that continue past the end of uterine contractions.

fetal heart rate

Obstetrics A rate which, in the non-stressed fetus, reflects cardioaccelerator and cardiodecelerator reflexes; analysis of the FHR requires evaluation of a baseline FHR between uterine contractions or periodic changes in the FHR and non-periodic, short-term fluctuations in the FHR. See Deceleration.

fe·tal heart rate

(FHR) (fē'tăl hahrt rāt)
In the fetus, the number of heartbeats per minute, normally 120-160.
References in periodicals archive ?
ALACE supports the choice of labor assistants/birth doulas to perform assessments such as palpation, checking fetal heart tones, or vaginal exams if they are already a midwife, physician, or labor and delivery nurse or have received specific training qualifying them to perform these assessments.
A competent tester will be able to put the patient at ease, reliably find fetal heart tones with the monitor, and advise the physician early if ominous events occur.
The tester will locate fetal heart tones with the monitor, then secure the ultrasound transducer on the abdomen by means of an elastic strap.
Fetal heart tones were heard at 160 to 170 beats per minute.
One hour later, the mother's uterus ruptured, fetal heart tones were lost from the external fetal monitor, and an alarm sounded.
However, we remain unique in giving participants the option of learning such "hands-on" skills as listening to fetal heart tones and monitoring labor progress, important skills to have when labor sitting a woman at home prior to going to the hospital.
In the not too distant past, the diagnosis was mainly dependent on the inability to hear fetal heart tones.
She was sent to the hospital, where her blood pressure was found to be severely elevated, her urine protein was 3+, and fetal heart tones were nonreassuring.
It may be difficult to ascultate fetal heart tones, or the tones may be indistinct.
Signs and Symptoms Almost every symptom and sign of pregnancy except for true fetal heart tones, fetal parts seen by imaging techniques, and delivery of the fetus, have been documented in patients with pseudocyesis (Table 1).
PHYSICIAN'S DEFENSE The amniotomy was indicated because the fetal heart tones showed unexplained prolonged decelerations, Also, the child's condition was unrelated to labor and delivery, because the child had no motor impairments.
Fetal heart tones were noted by emergency medical technicians.