the fetal heart and chest chapter 27
abnormal position could indicate:
- a space occupying lesion -pleural effusion -cardiac malformation -situs inversus -congenital diaphragmatic hernia (CDH)
the tubes fuse and fold which forms the 4 chambers:
-2 atria -2 ventricles
the blood that was taken to the liver is used to _________ the liver and is then returned back to the IVC by the ___________
-oxygenate -hepatic veins
2 arterioventricular valves:
-tricuspid -bicuspid (mitral)
the normal fetal heart will fill approximately ______ of the fetal chest
1/3
by ___ weeks, the heart is fully formed
10
a range of ____ to ___ bpm considered normal after the first trimester
110 to 180
during a BPP assessment during the 3rd trimester, the average fetal heart rate should be?
140bpm
the fetal heart contracts around ___ days
36-37
usually imaged in an axial (trans) view within the chest, just above the stomach
4 chamber heart
most important image of heart: -ventricles approx. same size -flap of foramen ovale opens into LT atrium -prominent moderator bands seen in apex of RT ventricle -valves separate atria from ventricles
4 chamber view (Hagen Ansert)
EV imaging should detect M-mode when the CRL measures?
4-5mm
origin of aorta from ___ ventricle (L.V.O)
Lt
the normal pulmonary artery should be positioned ________ to the aorta and should be seen crossing over it.
anterior
the _____ will be angled to the left of the ML, with the base closest to the spine
apex
separates the two atrias
atrial septum
between Lt atrium and ventricle
bicuspid (mitral)
decreased FHR
bradycardia
half of the blood goes to the liver through the left portal vein while the other half is shunted directly into the IVC via a small branch of the umbilical vein called the?
ductus venosus
a moderator bands can normally be seen within the Rt ventricle as an __________ focus
echogenic
begins as 2 tubes
fetal heart
sits adjacent to the secondary yolk sac
fetal heart
blood bypasses lungs
foramen ovale
blood can then travel across the ___________
forman ovale
____ atrium is closest to the spine
left
tract leads to aorta
left ventricular outflow tract
causes the left ventricle to have smoother walls
moderator ban
_______ ventricle is most anterior
right
tract leads to pulmonary artery and it's branches
right ventricular outflow tract
the existing oxygen-rich blood in the IVC travels up to the heart and enters the __________
rt atrium
structure that separate the chambers
septums
increased FHR
tachycardia
Between RT atrium and RT ventricle
tricuspid
the ______ valve sits closer to the apex
tricuspid
the normal umbilical cord contains
two arteries and one vein
the __________ vein travels superiorly where it comes to the left portal vein
umbilical
the ____, entering at the umbilicus, brings oxygen-rich blood from the placenta to the fetus
vein
separates the 2 ventricles
ventricular septum
should be uninterrupted and of equal thickness to the left ventricular wall
ventricular septum
septum at ____ degrees
45
with its apex forming a _________ angle with the fetal spine
45-degree
views the origin of pulmonary trunk from ___ ventricle
RT
