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Quinidine Adverse Effects and Drug Interactions Quiz
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Quinidine Adverse Effects and Drug Interactions Quiz

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Questions and Answers

What is the mechanism of action of aliskirin?

Inhibits the conversion of angiotensinogen into angiotensin I, suppressing the entire RAAS.

What are the therapeutic uses of captopril?

Captopril is used for high blood pressure, heart failure, and nephropathy.

What adverse effects are associated with angioedema?

Angioedema can be fatal and is linked to increased capillary permeability.

Which category of drugs can cause rebound hypertension if stopped abruptly?

<p>Category D drugs, with a black box warning, can cause rebound hypertension if abruptly discontinued.</p> Signup and view all the answers

What are the therapeutic uses of eplerenone?

<p>Eplerenone is used for hypertension and heart failure.</p> Signup and view all the answers

What is a notable drug interaction to be cautious about with ACE inhibitors?

<p>Drugs that increase potassium levels or lithium can interact with ACE inhibitors.</p> Signup and view all the answers

Which drug is specifically used for high blood pressure, stroke prevention, and diabetic nephropathy?

<p>Losartan is used for high blood pressure, stroke prevention, and diabetic nephropathy.</p> Signup and view all the answers

What is a unique adverse effect associated with quinidine?

<p>Lupus-like syndrome</p> Signup and view all the answers

What is the first line use of quinidine in the African American population?

<p>Blood pressure, heart failure, and hypertensive crisis</p> Signup and view all the answers

How do organic nitrates like nitroglycerin work in the body?

<p>Promote dilation of veins to decrease oxygen demand</p> Signup and view all the answers

What is a common side effect of organic nitrates like nitroglycerin?

<p>Headache</p> Signup and view all the answers

Why should hypotensive drugs, especially beta blockers, be used with caution alongside nitroglycerin?

<p>All hypotensive drugs can interact with nitroglycerin, leading to severe hypotension</p> Signup and view all the answers

What is the primary mechanism of action of calcium channel blockers (CCBs)?

<p>Calcium channel blockers prevent calcium from entering cells, especially in the heart and blood vessels, which decreases heart rate and myocardial contraction.</p> Signup and view all the answers

What are the main therapeutic uses of calcium channel blockers (CCBs)?

<p>The main therapeutic uses of CCBs include treatment of hypertension, angina pectoris, and dysrhythmias. They may also be used for migraine prevention.</p> Signup and view all the answers

What are some common adverse effects associated with calcium channel blockers (CCBs)?

<p>Common adverse effects of CCBs include headaches, drowsiness, flushing, fatigue, edema, and postural hypotension with reflex tachycardia.</p> Signup and view all the answers

How do the different classes of calcium channel blockers (CCBs) differ in their effects on the cardiovascular system?

<p>The different CCB classes have varying effects on the cardiovascular system - 1st/2nd generation CCBs (e.g. nifedipine) primarily affect peripheral vasculature, while 3rd/4th generation CCBs (e.g. verapamil, diltiazem) have more direct effects on the heart.</p> Signup and view all the answers

What is the role of digoxin, a cardiac glycoside, in the management of cardiovascular conditions?

<p>Digoxin, a cardiac glycoside, is used less frequently now because it has not been shown to prolong life. It is considered a second-line therapy for conditions like heart failure.</p> Signup and view all the answers

How do organic nitrates, a class of vasodilators, work to treat cardiovascular conditions?

<p>Organic nitrates are vasodilators that work by increasing cardiac output through their inotropic and chronotropic effects, as well as reducing the workload on the heart.</p> Signup and view all the answers

What is the mechanism of action and therapeutic use of hydralazine, another type of vasodilator?

<p>Hydralazine is a vasodilator used in the treatment of severe hypertension, but it has potential for serious side effects, so its use is limited.</p> Signup and view all the answers

What is the mechanism of action of ACE inhibitors and ARBs?

<p>ACE inhibitors reduce levels of angiotensin II, dilating blood vessels. ARBs block access to angiotensin II receptors in blood vessels and tissues, increasing bradykinins which also dilate vessels.</p> Signup and view all the answers

What are the therapeutic uses of ACE inhibitors and ARBs?

<p>Hypertension, heart failure, myocardial infarction, nephropathy (diabetic and preventing end-stage renal disease), preventing cardiovascular events like MI and stroke.</p> Signup and view all the answers

What is a key adverse effect of ACE inhibitors that is less common with ARBs?

<p>Dry, irritating, nonproductive cough due to increased kinase II levels.</p> Signup and view all the answers

Why are ACE inhibitors and ARBs preferred over beta blockers in asthma patients with hypertension?

<p>ACE inhibitors and ARBs are safe for asthma patients, while beta blockers can exacerbate asthma symptoms.</p> Signup and view all the answers

What is a common drug interaction to be aware of when initiating ACE inhibitor therapy?

<p>First dose hypotension, especially if the patient is also on a diuretic.</p> Signup and view all the answers

Give an example of an ACE inhibitor drug name, and explain the naming convention.

<p>Lisinopril. ACE inhibitor drug names end in the syllable '-pril'.</p> Signup and view all the answers

Give an example of an ARB drug name, and explain the naming convention.

<p>Losartan. ARB drug names end in the syllable '-artan'.</p> Signup and view all the answers

How do the administration and dosing of ACE inhibitors and ARBs compare?

<p>Most are oral, can be given with food, dosed once or twice daily. They are excreted by the kidneys.</p> Signup and view all the answers

Besides cough, what are some other common adverse effects of ACE inhibitors and ARBs?

<p>Dizziness, muscle cramps or weakness, heartburn, diarrhea, sensitivity to touch.</p> Signup and view all the answers

Study Notes

Renin-Angiotensin-Aldosterone System (RAAS)

  • Angiotensin Converting Enzyme Inhibitors (ACEIs) and Angiotensin Receptor Blockers (ARBs) are used to treat hypertension, heart failure, and myocardial infarction.
  • ACEIs reduce levels of angiotensin II, dilating blood vessels, and increase levels of bradykinins, causing cough and angioedema.
  • ARBs block access to receptors in blood vessels, having similar effects as ACEIs, but without inhibiting Kinase II, resulting in less cough and angioedema.

ACE Inhibitors

  • Examples include captopril, enalapril, and lisinopril.
  • Used to treat high blood pressure, heart failure, and nephropathy.
  • Can cause hyperkalemia, angioedema, and cough.

Angiotensin Receptor Blockers (ARBs)

  • Examples include losartan, olmesartan, and valsartan.
  • Used to treat high blood pressure, stroke prevention, and diabetic nephropathy.
  • Less likely to cause cough, angioedema, and hyperkalemia.

Direct Renin Inhibitors

  • Aliskiren is the only medication in this class.
  • Inhibits the conversion of angiotensinogen into angiotensin I, suppressing the entire RAAS.
  • Used to treat hypertension.
  • Less likely to cause cough, angioedema, and hyperkalemia.

Aldosterone Antagonists

  • Eplerenone is a selective aldosterone receptor blocker.
  • Used to treat hypertension and heart failure.
  • Fewer side effects than spironolactone.

Calcium Channel Blockers (CCBs)

  • Mechanism of action: prevents calcium from entering cells, decreasing heart rate and myocardial contraction.
  • Used to treat hypertension, angina pectoris, and dysrhythmias.
  • Examples include amlodipine, nifedipine, verapamil, and diltiazem.

Other Vasodilators

  • Hydralazine, nitroprusside, and minoxidil are used to treat hypertension and heart failure.
  • Nitroprusside is used in emergency situations for hypertensive emergency.
  • Minoxidil can cause serious side effects.

Cardiac Glycosides

  • Also known as digitalis drugs.
  • Mechanism of action: increases force of contraction, slows conduction, and increases refractory period.
  • Used to treat hypertension, heart failure, and dysrhythmias.
  • Examples include digoxin.
  • Adverse effects include headaches, drowsiness, flushing, fatigue, and dizziness.

Anti-Dysrhythmics

  • Several categories, including sodium channel blockers, beta-adrenergic blockers, potassium channel blockers, calcium channel blockers, and others.
  • Used to treat dysrhythmias and prevent sudden cardiac death.
  • Examples include quinidine, which has many drug interactions and can cause CNS and GI adverse effects.

Organic Nitrates

  • Used to treat angina pectoris, decreasing oxygen demand by promoting dilation of veins.
  • Examples include nitroglycerin, which has various routes and durations of administration.
  • Adverse effects include headache, orthostatic hypotension, and reflex tachycardia.

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Test your knowledge on the adverse effects, drug interactions, and specific drugs related to Quinidine. Learn about the inhibitory effects of grapefruit juice, unique lupus-like syndrome, first-line use in African-American population, and signs of toxicity like anorexia. Explore the classification of anti-dysrhythmias and mechanisms of action.

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