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AWHONN Intermediate Fetal Monitoring Quiz with Answers Explained

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AWHONN Intermediate Fetal Monitoring Quiz with Answers Explained If fetal arterial pressure begins to fall below normal levels: - CORRECT ANSWER-A. BARORECEPTORS CAUSE VASOCONSTRICTION AND INCREASE THE FHR An increase in arterial blood pressure produces vessel distension and causes arterial baroreceptors to send neuronal messages to the cardioinhibitory center, which in turn causes rapid slowing of the fetal heart rate via the parasympathetic vagus nerve. A decrease in arterial pressure results in an increased heart rate. Source:z Which of the following is an extrinsic influence on the FHR? - CORRECT ANSWER-Fetal-placental circulation

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Uploaded on
January 2, 2025
Number of pages
3
Written in
2024/2025
Type
Exam (elaborations)
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  • awhonn

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AWHONN Intermediate Fetal Monitoring Quiz with
Answers Explained


Ifzfetalzarterialzpressurezbeginsztozfallzbelowznormalzlevels:z-zCORRECTzANSWER-
A.zBARORECEPTORSzCAUSEzVASOCONSTRICTIONzANDzINCREASEzTHEzFHR

Anzincreasezinzarterialzbloodzpressurezproduceszvesselzdistensionzandzcauseszarterialzbaroreceptorsztozsen
dzneuronalzmessagesztozthezcardioinhibitoryzcenter,zwhichzinzturnzcauseszrapidzslowingzofzthezfetalzheartzr
atezviazthezparasympatheticzvagusznerve.zAzdecreasezinzarterialzpressurezresultszinzanzincreasedzheartzrate
.

Source:zhttps://perigen.com/what-regulates-fetal-heart-rate/



WhichzofzthezfollowingziszanzextrinsiczinfluencezonzthezFHR?z-zCORRECTzANSWER-Fetal-
placentalzcirculation



Fetalzheartzratezvaiabilityziszdefindedzaszfluctuationszinzthezbaselinezthatzarezirregularzinz-
zCORRECTzANSWER-AMPLITUDEzandzFREQUENCY




Thezmostzhighlyzoxygenatedzbloodzinzfetalzcirculationziszcarriedzby:z-zCORRECTzANSWER-Ductuszvenosus



Anzincreasezinzthezfetalzheartzratezimmediatelyzprecedingzazvariablezdecelerationziszcausedzby:z-
zCORRECTzANSWER-Occlusionzofzthezumbilicalzvein




Thezetiologyzofzvariablezdecelerationsziszlikelyzrelatedztozumbilicalzvenouszandzarterialzocclusion.zInitially,z
withzocclusionzofzthezthin-
walledzumbilicalzvein,zvenouszreturnztozthezfetalzrightzatriumziszreduced,zproducingzazreflexztachycardia.zT
hiszpatternzoftenziszobservedzaszazshoulderzonzthezFHRzmonitorzstripzimmediatelyzbeforezthezabruptzvaria
blezFHRzdeceleration

Source:zhttps://www.glowm.com/section-
view/heading/Intrapartum%20Fetal%20Monitoring/item/202#



WhenzassessingzazFHRztracing,zthezfirstzstepzisztoz-zCORRECTzANSWER-Estabilishzthezbaselinezrate

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