NUR 220 - Cardiovasc. + Ab/GI Flashcards
what is the normal heart rate?
60-100 bpm
what area of the heart can become enlarged with cardiac issues?
left ventricle
what are the three layers of the heart from outside to inside
pericardium, myocardium, endocardium
what are the AV valves?
tricuspid and mitral
what are the semilunar valves?
aortic and pulmonic
what is systole?
ventricles contracting
what sound does systole make?
LUB
what valves close during systole?
tricuspid + mitral
what is diastole?
ventricles relaxing and filling
what sound does diastole make?
DUB
what valves close during diastole?
aortic + pulmonic
what is the pacemaker of the heart
sinoatrial SA node
what happens if the SA node fails?
AV node starts
what is the normal rate for the atrioventricular AV node?
40-60bpm
what is the normal rate for the perkinje fibers and bundle of his?
20-40bpm
what happens if the SA and AV node fails?
perkinje fibers + bundle of his start up
why do we always ask about herbal medications?
could interact with prescribed meds
what is rhuematic fever?
unhealed strep throat that causes scar tissue on the heart
what is nitroglycerin?
vasodilator that can relieve chest pain