Cardio Random Flashcards
truncus arteriosus
ascending aorta and pulmonary trunk
bulbus cordis
smooth part of ventricles
primitive atrium
trabeculated portion
primitive ventricle
trabeculated portion
left horn sinus venosus
coronary sinus
right horn sinus venosus
smooth part of right atrium
cardiac looping
begins at week 4
defective in Karagener syndrome
patent foramen ovale
failure of septum primum and septum secundum to fuse
ventricular septal defect
most common congenital cardiac anomaly
most common membranous septum
outflow tract formation
neural crest and endocardial migrate
failure of neural crest cells to migrate
transposition of great vessels
tetralogy of fallot
persistent truncus arteriosus
ductus venosus
into IVC bypassing hepatic circulation
deoxygenated blood in fetal circulation
through ductus arteriosus
oxygenated blood in fetal circulation
through foramen ovale
allantois
urachus becomes median umbilical ligament
umbilical arteries
medial umbilical ligaments
umbilical vein
ligamentum teres hepatis
contained in falciform ligament
SA and AV blood supply
RCA
LCX supply
lateral and posterior walls of left ventricle
LAD supply
anterior 2/3 of interventricular septum
PDA supply
AV node
left dominant from LCX
right dominant from RCA
enlargement RA
dysphagia and hoarseness
pericardial cavity
between parietal and visceral layers
innervation pericardium
phrenic
referred pain to shoulder
pulse pressure relationships
direct to SV
inverse to arterial compliance
decrease pulse pressure
aortic stenosis, cardiogenic shock, cardiac tamponade, HF
increase SV
contractility and preloard increased
decreased afterload
contractility decreases
beta blocker HF systolic dysfunction acidosis hypoxia non-dihydropyridine Ca channel blockers
increase myocardial oxygen demand
contractility
afterload
HR
diameter of ventricle
decrease preload
venous vasodilators
decrease afterload
arterial vasodilators
compensation increase afterload
hypertrophy of LV
most TPR
arterioles
inotropy
contractility
increased catecholamines, digoxin
decreased HF, NO
only alters CO
venous return
changes volume
fluid infusion, sympathetic increase
hemorrhage and spinal anesthesia decrease
TPR
vasopressors increase (and decrease both lines) exercise and AV shunt decreases (increases both lines)
S3
early diastole
increased filling pressures and dilated ventricles
S4
late diastole (atrial kick) lateral decubitus, ventricular noncompliance
a wave
atrail contraction
c wave
RV contraction
x descent
relaxation
v wave
filling against closed valve
y descent
RA emptying into RV
prominent in pericarditis, absent in tamponade
pathologic splitting
inspiration increase VR
delayed closure of pulmonic valve
wide splitting
delayed RV emptying
fixed splitting
in ASD
paradoxical splitting
delay in aortic closure (aortic steonisis, LBBB)
P2 before A2
increase HCOM murmur
valsalva, standing up
MVP and HCOM differ from the others
pulsus parvus et tardus
aortic stenosis
midsystolic click
due to sudden tensing of chordae tendinae
causes aortic regurg
aortic root dilation, bicuspid aortic valve, endocarditis, rheumatic fever