coronary artery bypass graft Flashcards
basic overveiew
graft blood vessel (usually saphenous vein) to bypass a blockage in ocronary artery
R coronary artery supplies…
R atrium
R ventricle
inferior L ventricle
posterior septal area
Circumflex coronary artery supplies…
L atrium
Posterior L ventricle
LAD coronary artery supplies
anterior L ventricle
anterior septal area
atherosclerosis risk factors: non-modifiable
older age
FHx
male
atherosclerosis risk factors: modifiable
smoking alcohol poor diet sedentary obesity poor sleep stress
atherosclerosis risk factors: medical co-morbidities
diabetes htn CKD inflammatory conditions e.g. RA atypical antipsychotics
atherosclerosis complications
angina MI TIA stroke PAD
cardiopulmonary bypass
takes blood from vena cava and pump blood through machine which adds O2 and takes away CO2
heparin used to prevent clotting
cardioplegia
stop heart beating during surgery
done using high potassium solution
three main options for graft vessels
saphenous vein
internal thoracic artery
radial artery
pedicled graft
leaving graft vessel proximally attached to original site whilst changing where it supplies
free graft
blood vessel entirely seperated from original connection
what can happen to vein grafts
intimal hyperplasia - become stenosed
CABG complications
death stroke infection AKI cognitive impairment MI AF
