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Maternity Nursing

Materninty Nursing Chapter 6

Maternity Nursing - TermsMaternity Nursing - Defined
Accelerations Periodic increase in the baseline fetal heart rate. (brief, temporary increases in FHR of at least 15 beats/min above the baseline. They usually occur with fetal movements just as the heart rate increases in adults during exercise.)
Alpha-fetoprotein (AFP) An antigen present in the human fetus. Elevated levels in the amniotic or adult serum during pregnancy may indicate neural tube defect; decreased levels may indicate Down Syndrome.
Amnioinfusion Infusion of warmed isotonic saline into the uterine cavity to reduce umbilical cord compression; also performed to flush meconium out of the cavity to reduce the risk of fetal aspiration.
Deceleration Decrease in the fetal heart rate.
Early Deceleration Periodic change in fetal heart rate patern caused by head compression; deceleration has a uniform appearance and early onset in relation to the maternal contraction.
External Fetal Monitoring Ultrasound transducer & tacodynamometer are secured to the woman's abdomen. When placed correctly the sound waves of the fetal heart are picked up by the electric monitor. Uterine contractions monitored for frequncy/duration, not intensity externally.
Fetal Pulse Oximetry Fetal oxygen saturation measured by a transcervical catheter positioned against the the fetal cheek. Used when the amniotic membranes are ruptured and the cervix is at least 2 cm dilated.
Internal Fetal Monitoring It requires ruptured amniotic membranes and at least 2 cm dilated. Fetal presentiong part must be known and down near cervix. Spiral electrode inserted into vagina and placed by clockwise rotation, until attached to presenting part (head or buttocks).
Internal EFM Wires extend from electrode attached to leg plate and then fetal monitor. Pressure transducer is place in utero cavity to monitor contractions and gives pressure reading.
Late Decelerations Frequently begin at approximately the peak of the contraction & end after the contraction ends. They are often associated with uteroplacental insufficiency. Persistant or recurrent late decelerations may indicate hypoxia or lack of oxygen to the fetus.
Nonreassuring Heart Rate Pattern A fetal heart rate pattern that indicates fetal distress, such as late decelerations, bradycardia, or absence of variability.
Reassuring Heart Rate Pattern Reflects adequate fetal oxygenation.
Variable Decelerations Involve a transient drop in FHR before, during, or after uterine contraction. They are related to a brief compression of the umbilical cord. The decelerations are abrupt and often associated with accelerations before or after deceleration.
Created by: 2banurse on 2006-09-30



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