Which of the following is a characteristic of a reassuring fetal heart rate pattern quizlet?
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Terms in this set (10)1. Fetal bradycardia is most common during: C) Viral infection. Correct Fetal bradycardia can be considered a later sign of fetal hypoxia and is known to occur before fetal death. Bradycardia can result from placental transfer of drugs, viral infections such as cytomegalovirus (CMV), maternal hypothermia, and maternal hypothermia. Maternal hyperthyroidism, fetal anemia, and tocolytic treatment using ritodrine will most likely result in fetal tachycardia. The nurse providing care for the laboring woman understands that accelerations with fetal movement: A. Are reassuring. Correct Episodic accelerations in the fetal heart rate (FHR) occur during fetal movement and are indications of fetal well-being; they do not warrant close observation. Umbilical cord compression results in variable decelerations in the FHR. Uteroplacental insufficiency would result in late decelerations in the FHR. The most common cause of decreased variability in the FHR that lasts 30 minutes or less is: D. Fetal sleep cycles. Correct A temporary decrease in variability can occur when the fetus is in a sleep state. These sleep states do not usually last longer than 30 minutes. Altered fetal cerebral blood flow results in early decelerations in the FHR, and umbilical cord compression in variable decelerations. Fetal hypoxemia is evidenced by tachycardia initially and then bradycardia. A persistent decrease or loss of FHR variability may be seen. You are evaluating the fetal monitor tracing of your client, who is in active labor. Suddenly you see the fetal heart rate (FHR) drop from its baseline of 125 down to 80. You reposition the mother, provide oxygen,
increase IV fluid, and perform a vaginal exam. The cervix has not changed. Five minutes have passed, and the FHR remains in the 80s. What additional nursing measures should you take? D. Notify the primary health care provider immediately. Correct To relieve an FHR deceleration the nurse can reposition the mother,
increase IV fluid, and provide oxygen. Also, if oxytocin is being infused, it should be discontinued. If the FHR does not resolve, the primary health care provider should be notified immediately. Although it is always a good idea to have extra help during any unanticipated obstetric event, calling for help is not the most important nursing measure at this time. If the FHR were to continue in an abnormal or nonreassuring pattern, a cesarean section might be warranted. This would require the
insertion of a Foley catheter; however, the physician must make that determination. Oxytocin may put additional stress on the fetus. When using intermittent auscultation (IA) to assess uterine activity, nurses should be aware that: A. The examiner's hand should be placed over the fundus before, during, and after contractions. Correct The assessment is done by palpation; duration, frequency, intensity, and resting tone must be assessed. The duration of contractions is measured in seconds; the frequency is measured in minutes. The intensity of contractions usually is described as mild, moderate, or strong. The resting tone usually is characterized as soft or relaxed. A nurse caring for a woman in labor understands that increased variability of the fetal heart rate might be caused by: C. Methamphetamines. Correct The use of illicit drugs such as cocaine or methamphetamines might cause increased variability. Maternal ingestion of narcotics and tranquilizer use may be the causes of decreased variability. The use of barbiturates may also result in a significant decrease in variability as these drugs are known to cross the placental barrier. Which of the following statements is not used to describe a characteristic of a uterine contraction? D. Appearance (shape and height) Correct Uterine contractions are described in terms of frequency, intensity, duration, and resting tone. The nurse caring for a laboring woman is aware
that maternal cardiac output can be increased by: A. Change in position. Correct Maternal supine hypotension syndrome is caused by the weight and pressure of the gravid uterus on the ascending vena cava when the woman is in a supine position. This pressure reduces venous return to the woman's heart, as well as cardiac output, and subsequently lowers her blood pressure. The nurse can encourage the woman to change positions and avoid the supine position. Oxytocin administration, regional anesthesia, and intravenous analgesic may all reduce maternal cardiac output Fetal well-being during labor is assessed by: A. The response of the fetal heart rate (FHR) to uterine contractions (UCs). Correct Fetal well-being during labor can be measured by the response of the FHR to UCs. In general, reassuring FHR patterns are characterized by an FHR baseline in the range of 110 to 160 beats/min with no periodic changes, a moderate baseline variability, and accelerations with fetal movement. Although FHR accelerations and an FHR greater than 110 beats/min may be reassuring, they are only two components of the criteria by which fetal well-being is assessed. More information is needed to determine fetal well-being. A group of fetal monitoring experts (National Institute of Child Health and Human Development, 2008) recommends that fetal heart rate (FHR) tracings demonstrate certain characteristics to be described as reassuring or normal (category I). These characteristics include: B. Early decelerations, either present or absent. Correct Early decelerations, the absence of late decelerations, and the presence of accelerations indicate a normal category I tracing. Bradycardia not accompanied by variability is a category II tracing, as is fetal tachycardia. A sinusoidal pattern is considered an ominous sign and is definitely an abnormal category III tracing. Sets with similar termsChapter 18 OB10 terms Melanie_Borrelli Chapter 18: Fetal Assessment During Labor37 terms Victoria_Crewdson Fetal Assessment During Labor NCLEX37 terms natashakress Fetal Assessment During Labor NCLEX37 terms Kitkatkait9 Sets found in the same folderChapter 17: Maximizing Comfort for the Laboring Wo…34 terms nursestudent17 Chapter 16: Labor and Birth Processes28 terms nursestudent17 Chapter 19: Nursing Care of the Family During Labo…42 terms
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Which of the following is characteristic of a Category I fetal heart rate tracing?Category I : Normal.
The fetal heart rate tracing shows ALL of the following: Baseline FHR 110-160 BPM, moderate FHR variability, accelerations may be present or absent, no late or variable decelerations, may have early decelerations. Strongly predictive of normal acid-base status at the time of observation.
What fetal heart rate patterns are considered nonAbnormal heart rate findings by IA indicative of non-reassuring fetal status include prolonged fetal tachycardia or bradycardia, presence of repetitive or prolonged decelerations, and uterine tachysystole (more than 5 uterine contractions in a 10 min period).
Which qualities are considered normal when assessing fetal heart rate?A normal FHR ranges from 110-160 beats per minute. During labor, it is important to assess the FHR to evaluate the fetal oxygenation status. A fetal doppler or fetoscope can be used to auscultate the FHR between, during, and immediately after uterine contractions.
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