Positive Inotropic Agents and Their Clinical Considerations Quiz
Test your knowledge on positive inotropic agents, mechanisms, indications, and adverse effects in cardiac pharmacology. Take the quiz now!
#1
Which of the following is a positive inotropic agent?
Beta-blockers
Calcium channel blockers
Digitalis glycosides
Angiotensin converting enzyme (ACE) inhibitors
#2
Which condition might require the administration of positive inotropic agents?
Hypertension
Atrial fibrillation
Heart failure with reduced ejection fraction
Bronchial asthma
#3
Which of the following drugs is classified as a cardiac glycoside?
Dobutamine
Amiodarone
Digoxin
Metoprolol
#4
Which receptor type does dobutamine primarily target?
Alpha-1 adrenergic receptors
Beta-1 adrenergic receptors
Beta-2 adrenergic receptors
Muscarinic acetylcholine receptors
#5
Which of the following drugs is NOT a phosphodiesterase inhibitor?
Milrinone
Amrinone
Digoxin
Levosimendan
#6
Which of the following is a potential adverse effect of positive inotropic agents?
Hypotension
Bradycardia
Hypokalemia
Peripheral vasodilation
#7
Which electrolyte imbalance is important to monitor when administering positive inotropic agents?
Hypernatremia
Hypocalcemia
Hyperkalemia
Hypomagnesemia
#8
Which positive inotropic agent is commonly used in the management of acute decompensated heart failure?
Isosorbide dinitrate
Sodium nitroprusside
Nitroglycerin
Dobutamine
#9
Which mechanism of action is NOT associated with positive inotropes?
Inhibition of phosphodiesterase enzymes
Increased calcium influx into cardiac myocytes
Enhanced release of norepinephrine
Activation of beta-adrenergic receptors
#10
Which class of positive inotropic agents directly increases intracellular calcium concentration?
Beta-blockers
Calcium channel blockers
Digitalis glycosides
Phosphodiesterase inhibitors
#11
Which of the following is a contraindication for the use of positive inotropic agents?
Acute myocardial infarction with systolic dysfunction
Heart failure with preserved ejection fraction
Ventricular tachycardia
Severe aortic stenosis
#12
Which of the following is a potential mechanism of action for positive inotropic agents?
Decreasing intracellular calcium concentration
Enhancing sodium-potassium ATPase activity
Blocking beta-adrenergic receptors
Increasing cAMP levels
#13
Which class of positive inotropic agents primarily acts by inhibiting phosphodiesterase III enzymes?
Digoxin
Dobutamine
Milrinone
Levosimendan
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