CVR 8 Flashcards
What is the truncus arteriosus
The truncus arteriosus is a structure that is present during embryonic development. It is an arterial trunk that originates from both ventricles of the heart that later divides into the aorta and the pulmonary trunk.
What happens if the septum doesnt show up?
Persistent truncus arteriosus (single outflow tract)
Cyanosis pan systolic murmur
What is cyanosis?
Cyanosis is defined as the bluish or purplish discolouration of the skin or mucous membranes due to the tissues near the skin surface having low oxygen saturation.
Why do they squat
compress femorals and external iliacs, increasing vascular resitance, increase pressure up and less blood going up. reduce pressure between the two.
What is transposition of the great vessels
Transposition of the great arteries is a congenital (present at birth) heart defect. … In transposition of the great arteries, the aorta is connected to the right ventricle, and the pulmonary artery is connected to the left ventricle — the opposite of a normal heart’s anatomy.
Very cyanoitc usually not compatible with life.
Why is the 3rd aortic arch important?
Common carotid, proximal internal carotid, external carotid branches
What arch does the left arch of the aorta and subclavian artery come off
4th
What comes off the 6th arch
pulmonary trunk and left ductus arteriosus
What does the right reccurent laryngeal nerve loop around?
The right and left nerves are not symmetrical, with the left nerve looping under the aortic arch, and the right nerve looping under the right subclavian artery then traveling upwards. They both travel alongside of the trachea. Additionally, the nerves are one of few nerves that follow a recurrent course, moving in the opposite direction to the nerve they branch from, a fact from which they gain their name.
What if right dorsal aorta does not obliterate?
double aortic arch
What if right dorsal aorta does not obliterate?
double aortic arch
What is the coarctation of the aorta?
narrowing of aorta below origin of left subclavian artery
2 types pre ductal and post ductal.
Pre ductal - INfantile IN close tot he heart…right to left
post ductal - narrowing below ductus arteriosus. left ventricular problems, notching of ribs, delay in lower lumbar pulse
First branch of subclavian
internal thoracic
