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Cardio #2


the heart is located in the L chest
which in worst, cut nerves or compressed nerve compressed nerve remains mid-line and can't open or close
what is the major conducting artery in the system aorta
what is the most important nerve that runs around the aorta and comes back up recurrent larengeal nerve
mechanisms for aneurysm formation HTN, Aterosclerosis, Deceleration injury, syphilis (#1 cause of ascending aneurysm
S/s of ascending thoracic aorta Trachea:inspir. stridor, esophagus:dysphagia, laryngeal nerve:hoarseness, carotids:occl.,coronary:occl., cardiac tamponade, acute aortic regurg
txment of ascending pulse wave, amplitude, freq. or surg. intervention decrease HR BETA BLOCKERS dimish pulsewave, amplit., freq.
preop & post op management of ascending thoracic aorta L radial aline, EEG, carotid doppler post: HTN, tachycardia, CNS dys,
aneurysm of the ascending thoracic aorta type I and II, usually middle aged
aneurysms of the descending thoracic aorta is what type III , usually asymptomatic, deceleration injury, myocardial contusion,
txment of type III dissection conservation medical managment, surgical intervention
a dissection is a tear in the intimal wall;longer to live if tear media will die quicker
type I arise from the ascending aorta 70% of all cases(syhphilis)
type II arise from the ascending aorta, collagen weakness (Marfans syndrome)
type III begin distal to the L SC artery 20% pts(decel)
pt with clavicle and rib fx check for aortic dissection
repairing the anterior ascending aorta sternum
repairing the descending aorta left side of the chest
aortic arch supply bld to all the bld to the upper chest, head, and upper extrem.
do you put a pt to sleep with a tamponade no; percardialcentesis
how do you dx aneurysms CT, MRI echo doesn't pick up arch of arota
what is the innominate artery and what does it branch off of and convert into innominate/brachicephalic artery branches off R SC artery and R common carotid artery
where does the L recurrent laryngeal nerve originate from vagus nerve
where does the descending aorta supply bld to branching arteries that come back at every thoracic verebrel level, 2 holes at each level
what are the 3 different types of aneurysms and what type is common in the aorta saccular, fusiform(usually found aorta), ruptured:hole thru all 3 layers of the artery, serious, mortality is high 90%
mortality rate difference b/n suprarenal AAA and infrarenal AAA suprarenal has the greater mortality rate and kidneys aren't perfused
what are the hemodynamic effects of dissection one of the layers increase SVR, decreased bld vol
which aneury. will there be diff. swallowing descending
where do you place a A/line in a descend. and ascend. descend.=R ascend=L
what's most important during intraop control BP <120
Created by: melbacs