Vasodilators Flashcards
four sub classes of vasodilators
Arteriodilators
Venodilators
Combined vasodilators
ACE inhibitors
two things that happen when cardiac output is reduced
hypotension
poor perfusion
what nervous system stimulates composition when there is reduced cardiac output
sympathetic
what do poor perfused kidneys activate
Renin-Angiotension-Aldosterol system (RAAS)
during decreased cardiac output, what does angiotension converting enzyme do
cause vasocontriction
what does aldosterol do during decreased cardiac output
causes the kidneys to retain water
mechanism of action for hydralazine
arteriolar dilation (decreases afterload)
mechanism of action for nitroglycerin ointment
venodilation (decreases preload)
mechanism of action for prazosin
A combination of venous and arterial dilation, leads to a reduction in preload and afterload.
what vasodilator can also be used in blocked cats and why
Prazosin
alpha 1 blocker
ACE inhibitors reduce ______ and _____
preload and afterload
which subclass of vasodilators is used on renal hypertension
ACE inhibitors
what vasodilator needs to be used with a diuretic and why
Hydralazine because it can cause sodium and water retention
