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Goodman & Gilman's Chapter 25: Drugs Affecting Renal Excretory Function Quiz
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Goodman & Gilman's Chapter 25: Drugs Affecting Renal Excretory Function Quiz

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Questions and Answers

What is the primary site of action for osmotic diuretics?

  • Distal convoluted tubule
  • Proximal tubule
  • Thick ascending limb
  • Loop of Henle (correct)
  • Which type of diuretic is known for inhibiting carbonic anhydrase?

  • Inhibitors of Na+-Cl- symport
  • Inhibitors of Na+-K+-2Cl- symport
  • Renal epithelial Na+ channel inhibitors
  • Osmotic diuretics (correct)
  • What effect do symport inhibitors have on bicarbonate and phosphate levels?

  • Increase bicarbonate, decrease phosphate
  • Decrease both
  • Increase both (correct)
  • Decrease bicarbonate, increase phosphate
  • Where do inhibitors of renal epithelial Na+ channels primarily act?

    <p>Late distal tubule, collecting duct</p> Signup and view all the answers

    Which diuretic type affects the reabsorption of Na+ and Cl- in the distal convoluted tubule?

    <p>Inhibitors of Na+-Cl- symport</p> Signup and view all the answers

    What characterizes the action of antagonists of mineralocorticoid receptors?

    <p>&quot;Volume-depleting&quot; effect</p> Signup and view all the answers

    What is the average number of times the kidney filters the extracellular fluid volume across the renal glomeruli in a day?

    <p>12 times</p> Signup and view all the answers

    In the context of renal physiology, what is the function of diuretics?

    <p>Adjust the volume or composition of body fluids</p> Signup and view all the answers

    How does the finely tuned homeostatic mechanism control body fluid osmolality?

    <p>By adjusting both water intake and solute-free water excretion</p> Signup and view all the answers

    What can abnormalities in the homeostatic system controlling body fluid osmolality potentially cause?

    <p>Deviations in plasma osmolality</p> Signup and view all the answers

    How are diuretics integrated into the discussion of renal physiology in this chapter?

    <p>By influencing urinary composition</p> Signup and view all the answers

    What do diuretics primarily aim to adjust in patients with disorders like hypertension and heart failure?

    <p>Volume or composition of body fluids</p> Signup and view all the answers

    What was the primary focus of the CAPRIE trial?

    <p>Comparison of clopidogrel with aspirin</p> Signup and view all the answers

    Which enzyme was identified for the bioactivation of nitroglycerin?

    <p>Endothelial nitric oxide synthase</p> Signup and view all the answers

    What cardiovascular condition was the ACC/AHA expert consensus document focused on?

    <p>Ischemic heart disease</p> Signup and view all the answers

    In which year was the study comparing ticagrelor with clopidogrel published?

    <p>2010</p> Signup and view all the answers

    What is the focus of managing peripheral edema in patients with arterial hypertension?

    <p>Regulation of endothelial nitric oxide synthase</p> Signup and view all the answers

    What aspect of nitroglycerin bioactivation was identified in the study by Chen Z, et al.?

    <p>$6:10$ regulation</p> Signup and view all the answers

    Which condition can be exacerbated by thiazide diuretics in patients with primary hyperparathyroidism?

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

    What therapeutic benefit may thiazide-induced decreased Ca2+ excretion provide for patients?

    <p>Treatment for osteoporosis</p> Signup and view all the answers

    What effect have thiazide diuretics been associated with regarding plasma lipids and glucose tolerance?

    <p>Worsened glucose tolerance</p> Signup and view all the answers

    How do thiazide diuretics affect pregnant women who take them?

    <p>Cause direct adverse effects on the fetus</p> Signup and view all the answers

    Why should nursing mothers avoid thiazide diuretics?

    <p>To prevent exposure through breast milk</p> Signup and view all the answers

    In patients with normal renal function, which type of diuretic is less effective as an antihypertensive agent compared to thiazides?

    <p>Loop diuretics</p> Signup and view all the answers

    What is the topic of the article by Fleckenstein A, et al. published in 1969?

    <p>Selective inhibition of myocardial contractility</p> Signup and view all the answers

    Which study provides a selectivity scale of calcium antagonists in the human cardiovascular system?

    <p>Godfraind T, et al. (1992)</p> Signup and view all the answers

    Which article discusses the management of peripheral edema in patients with arterial hypertension?

    <p>Epstein BJ, Roberts ME (2009)</p> Signup and view all the answers

    In which study was Ivabradine used as a treatment approach for stable coronary artery disease?

    <p>Fox K, et al. (2014)</p> Signup and view all the answers

    Which article discusses the identification of the enzymatic mechanism of nitroglycerin bioactivation?

    <p>Chen Z, et al. (2002)</p> Signup and view all the answers

    Which article provides guidelines for the diagnosis and management of patients with stable ischemic heart disease?

    <p>Fihn SD, et al. (2012)</p> Signup and view all the answers

    What is the primary action of β1 blockers that contributes to their antihypertensive effect?

    <p>Antagonism of β1 receptors</p> Signup and view all the answers

    Which additional effect unrelated to β adrenergic receptors is exhibited by labetalol and carvedilol?

    <p>Blockade of α1 receptors</p> Signup and view all the answers

    What is a characteristic of standard therapies like atenolol and bisoprolol among β blockers?

    <p>Intrinsic sympathomimetic activity</p> Signup and view all the answers

    Which receptor antagonism by β blockers results in major unwanted effects such as bronchoconstriction?

    <p>β2 receptors</p> Signup and view all the answers

    What is a common effect experienced with the presence of intrinsic sympathomimetic activity among β blockers?

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

    Which factor influences the clinical pharmacology and spectrum of adverse effects of different β blockers?

    <p>Partial agonist activity</p> Signup and view all the answers

    What is the second choice for the prevention of angina, with adverse effects similar to direct NO donors?

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

    Which dihydropyridine is the first choice for vasospastic angina?

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

    Which drug can cause tachycardia, hypotension, and trigger angina among the immediate-release calcium channel blockers?

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

    Which drug should not be used concurrently with beta blockers due to its effect on heart rate and AV conduction?

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

    Which drug inhibits carbonic anhydrase and has a relative potency of 1?

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

    Which drug is a second choice for preventing exertional angina among calcium channel blockers?

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

    Which class of antihypertensive drugs includes atenolol, bisoprolol, and propranolol?

    <p>Sympatholytic drugs</p> Signup and view all the answers

    What is the primary mechanism of action of beta blockers in hypertension treatment?

    <p>Blocking the beta-adrenergic receptors</p> Signup and view all the answers

    Which of the following is a side effect associated with beta blockers?

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

    Which type of diuretic might be preferred over beta blockers in patients with asthma or chronic obstructive pulmonary disease (COPD)?

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

    Which of the following is a mixed alpha/beta blocker used in hypertension treatment?

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

    In addition to hypertension, beta blockers like propranolol are also used in the management of which condition?

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

    What is the primary mechanism of action of osmotic diuretics?

    <p>Alteration of renal hemodynamics indirectly</p> Signup and view all the answers

    Which cations are affected by diuretics in terms of excretion and renal hemodynamics?

    <p>Na+ and K+</p> Signup and view all the answers

    What is a common effect of diuretics on the reabsorption of anions in the kidney?

    <p>Reducing reabsorption of HCO3-</p> Signup and view all the answers

    Which diuretic class primarily targets Na+-Cl- symport in the distal convoluted tubule?

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

    What is a significant difference between loop diuretics and thiazides in terms of their actions on renal hemodynamics?

    <p>Loop diuretics increase GFR, while thiazides reduce it.</p> Signup and view all the answers

    Which anion's renal handling is significantly altered by various diuretics?

    <p>HCO3-</p> Signup and view all the answers

    What is the primary site of action for osmotic diuretics?

    <p>Loop of Henle</p> Signup and view all the answers

    Which type of diuretic is known for inhibiting carbonic anhydrase?

    <p>Osmotic diuretics</p> Signup and view all the answers

    Where do inhibitors of renal epithelial Na+ channels primarily act?

    <p>Collecting duct</p> Signup and view all the answers

    What aspect of nitroglycerin bioactivation was identified in the study by Chen Z, et al.?

    <p>Enzymatic mechanism</p> Signup and view all the answers

    What is the mechanism of action of inhibitors of Na+- Cl- symport?

    <p>Distal convoluted tubule</p> Signup and view all the answers

    Which diuretic type affects the reabsorption of Na+ and Cl- in the distal convoluted tubule?

    <p>Thiazide diuretics</p> Signup and view all the answers

    What is the potential downside of prescribing loop diuretics once daily for the treatment of hypertension?

    <p>They can cause excessive acute diuresis and side effects.</p> Signup and view all the answers

    Which receptors do amiloride and triamterene act on to prevent urinary potassium loss?

    <p>Epithelial Na+ channel (ENaC)</p> Signup and view all the answers

    What is the primary mechanism of action of loop diuretics to induce natriuresis?

    <p>Inhibition of sodium reabsorption in the ascending loop of Henle</p> Signup and view all the answers

    Which diuretic type is particularly useful for patients with severe edema associated with vasodilators?

    <p>Loop diuretics</p> Signup and view all the answers

    What condition is caused by hyperactivity of the Epithelial Na+ channel (ENaC) in the distal tubule membrane according to the text?

    <p>Liddle syndrome</p> Signup and view all the answers

    How does hypokalemia increase the risk of ventricular arrhythmias?

    <p>By increasing the binding activity of K+ channel inhibiting drugs</p> Signup and view all the answers

    What is a well-known risk factor for ventricular arrhythmias associated with diuretic treatment?

    <p>Hypokalemia resulting from K+ depletion</p> Signup and view all the answers

    How does hypokalemia directly affect cardiac repolarization?

    <p>By decreasing outward K+ conductances</p> Signup and view all the answers

    What is a consequence of hypokalemia on Na+,K+-ATPase activity?

    <p>Increased intracellular Na+ and Ca2+ accumulation</p> Signup and view all the answers

    Why is hypokalemia associated with an increased risk of drug-induced ventricular tachycardia?

    <p>It decreases repolarization reserve</p> Signup and view all the answers

    How does hypokalemia contribute to the risk of ischemic ventricular fibrillation?

    <p>By increasing intracellular Ca2+ accumulation</p> Signup and view all the answers

    What is the most favorable efficacy-safety ratio in the context of acute coronary syndromes?

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

    Which medication has an unclear advantage over heparin in the treatment of heparin-induced thrombocytopenia (HIT)?

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

    Which factor does Fondaparinux inhibit in the context of percutaneous coronary interventions?

    <p>Factor Xa</p> Signup and view all the answers

    In what situation does low-molecular-weight heparin accumulate?

    <p>In patients with renal insufficiency</p> Signup and view all the answers

    Which medication is indicated for parenteral use only?

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

    'Heparin-induced thrombocytopenia (HIT)' is associated with which medication?

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

    In which publication can information about the selective inhibition of myocardial contractility by competitive divalent Ca++ antagonists be found?

    <p>Fleckenstein A, et al. Selective inhibition of myocardial contractility by competitive divalent Ca++ antagonists (iproveratril, D 600, prenylamine) [in German].</p> Signup and view all the answers

    Which study focused on the identification of the enzymatic mechanism of nitroglycerin bioactivation?

    <p>Chen Z, et al. Identification of the enzymatic mechanism of nitroglycerin bioactivation.</p> Signup and view all the answers

    Which article provides information about ivabradine in stable coronary artery disease?

    <p>Fox K, et al. Ivabradine in stable coronary artery disease.</p> Signup and view all the answers

    Which article focuses on the management of peripheral edema in patients with arterial hypertension?

    <p>Epstein BJ, Roberts ME. Managing peripheral edema in patients with arterial hypertension.</p> Signup and view all the answers

    Which publication discusses calcium antagonism and calcium entry blockade?

    <p>Godfraind T, et al. Calcium antagonism and calcium entry blockade.</p> Signup and view all the answers

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