Exam 2 Tutoring Notes Flashcards
alpha
vasoconstriction of peripheral arterioles
beta 1
increased heart rate, conduction and contractility
beta 2
vasodilation of peripheral arteries and brohcnodilation
dopaminergic
dilation of renal and mesenteric arteries
class 1
blocks sodium channels
class 1A
may prolong QT and cause arrhythmia
class 2
blocks beta adrenergic receptor
class 3
slows repolarization and increase duration of action potential
class 4
blocks calcium channels
preload
volume in ventricles at end of diastole
preload
- decrease in
hemorrhagic shock
preload
- increase
fluid bolus
afterload
pressure in the ventricle has to generate to overcome resistance
afterload
- decreased
septic shock
nipride
nitro
lasix
morphine
acei
afterload
- increase
vasopressor (levophed)
will ACEI have reflex tachycardia
NO
what will ACEI delay/inhibit
ventricular remodeling
reflect tachycardia
due to a lowered BP, body tries to compensate by increasing heart rate
contractility
- increased in
dobutamine (vasopressor, beta 1)
fluid bolus
contractility
- decreased in
acidosis
beta blockers
stroke volume
preload + contractility + afterload
end diastolic volume
how much blood is in the ventricles before contraction
LVEF
left ventricular ejection fraction
ratio of stroke volume to end diastolic volume
normal EF
over 55%