1 AWHONN Fetal Heart monitoring basics verified to pass

1 AWHONN Fetal Heart monitoring basicsa) Frequency b) Duration - correct answer Which contraction characteristics can be assessed with a tocodynamometer? a) Frequency b) Duration c) Intensity Uterus - correct answer All Fetuses of mothers in labor experience an interruption of the oxygenation pathway at which point? a) Throughout labor and delivery unless the use of a more accurate method is clearly indicated - correct answer The FHR can be monitored using doppler ultrasound? a) Throughout labor and delivery unless the use of a more accurate method is clearly indicated b) Internally c) Only early in labor d) The FHR cannot be monitored by doppler ultrasound b) 110-160 bpm - correct answer What is the normal range for FHR base line in a term infant? a) 80-120 bpm b) 110-160 bpm c) 140-180bpm d) it depends on the sex of the fetus Mother's inhalation to lungs to mat. circulatory system to hemoglobin in RBC's to bloodstream in uterus. Uterus to spiral arteries to placenta to intervillous space to travel via simple diffusion into the villi. The capillaries to the umb. vein to the fetus. The umb. artery sends waste (CO2) to the intervillous space to the mothers venous system. - correct answer Trace the flow of oxygen from mother to fetus and back. 1. Mother (blood plasma, cardiac output, hemoglobin concentration & O2 saturation) 2. Placenta/intervillous space (uterine contractions & calcification's) 3. Fetus (vagal response aka decel or cord compression) - correct answer What factors impact maternal oxygen delivery? 30-50% lateral recumbent or semi-Fowler's - correct answer By what % does maternal cardiac output increase above the non-pregnant state and what position helps this uteroplacental blood flow? >5 contractions in 10 min (more frequently than Q 2 min) averaged over 30 min window. Caused by oxytocin, aminoinfusion or in rare cases spontaneously. - correct answer Define tachysystole contractions and the cause of. Maintaining mat. volume, mat. positioning, intravenous hydration. Decreasing mat. pain/anxiety. 1. Reposition pt to side. 2. Admin IV fluid bolus. 3. Admin 0.25mg terbutaline SQ. 4. Admin O2 10L via non rebreather face mask. - correct answer List interventions for tachysystole contractions. higher conc. to lower concentration. 1.Oxygen from maternal (higher) to fetal compartment (lower) to fetal hgb then transported to fetal tissue. 2. CO2 returns to intervillous space by passive diffusion and is removed by the mat. venous system. - correct answer Describe passive diffusion as related to the maternal placental fetal system. Place her in lateral position, & increase IV fluids. If no improvement may need to give epi to increase vascular tone. - correct answer Maternal hypotension is a potential side effect of regional anesthesia