Tut Q's Flashcards
(34 cards)
Which of the following medicines is NOT one of the five classes of vasodilators?
xylazine
A calcium channel blocker medicine which is often used in cats for the management of hypertension is:
amlodipine
Of the following alternatives, which one best describes the pharmacological actions of pimobendan?
Vasodilation and (+) ve inotropic action.
A sodium channel blocker medicine which is often used in horses for the management of dysarrhythmic condition is:
quinidine
Which of the following statements is most correct regarding diltiazem as a vasodilator?
it is a calcium channel blocker
Of the alternatives below, which one best describes sildenafil as a vasodilating medicine?
Phosphodiesterase V inhibitor.
What class of cardiovascular medicines does pimobendan fit into?
a positive inotrope
Regarding the mechanism of positive inotropic action of digoxin, which of the following is most correct?
Competitive inhibition of Na+, K+-ATPase.
What class of vasodilators does ramipril best fit into?
ACE Inhibitors
Which of the following statements about angiotensin converting enzyme (ACE) inhibitors is NOT correct?
ACE inhibitors have a narrow therapeutic index, with their lethal dose is about 2x the therapeutic dose.
Of the following five classes of vasodilators, which one does pimobendan best fit into?
Phosphodiesterase inhibitors.
What class of cardiovascular medicines does prazosin best belong to?
a1 antagonists
Which of the following best describes the mechanism of action of class I antiarrhythmic medicines?
Blockers of sodium channels.
What class of cardiovascular medicines below does digoxin best belong to?
an antiarrhythmic
Of the following alternatives, which one best describes the mechanism of vasodilating action of pimobendan?
Inhibition of phosphodiesterase enzymes, both III & V isoforms.
Which of the following statements about class IV antiarrhythmic medicines is most correct?
Class IV antiarrhythmic medicines also act as peripheral vasodilators.
In animals with congestive heart failure, which of the following is most correct?
Heart failure animals usually have excessive sympathetic tone due to decreased baroreceptor sensitivity.
Which of the following is NOT correct about the pharmacological actions of ACE inhibitors?
To increase the effect of aldosterone.
Which of the following statements regarding use of catecholamine medicines such as dopamine and dobutamine in the management of animals with cardiovascular conditions is NOT correct?
They may worsen ventricular arrhythmias.
What is the main effect for Class III anti-arrhythmic medicines?
Prolong refractory period.
Which of the following is NOT correct about the mechanisms of action of anti-arrhythmic medicines?
Quinidine is a calcium channel blocker.
Which of the following is NOT correct about the action of digoxin?
It results in increased intracellular calcium.
What is correct about pimobendan?
It results in reduced removal of cAMP.
What characteristics is correct about ACE inhibitors?
They inhibit Na retention.
