Which of the following diuretic agents will the nurse teach the patient to avoid food sources that are high in potassium?
Thiazide diuretic Hydrochlorothiazide.
Osmotic diuretic Mannitol.
Potassium sparing diuretic Aldactone.
Loop diuretic Furosemide.
The Correct Answer is C
This is because potassium sparing diuretics do not lower potassium levels in the blood, unlike other types of diuretics. Potassium is an essential electrolyte that serves nerve and muscular functions and is regulated by the kidneys. Low potassium levels can cause irregular heartbeats and other problems. Therefore, patients taking potassium sparing diuretics should avoid food sources that are high in potassium, such as bananas, avocados, spinach, and potatoes.
Choice A is wrong because thiazide diuretics, such as hydrochlorothiazide, can cause low potassium levels in the blood.
Patients taking thiazide diuretics may need to take potassium supplements or eat more potassium-rich foods to prevent hypokalemia.
Choice B is wrong because osmotic diuretics, such as mannitol, do not affect potassium levels in the blood.
They work by increasing the amount of water in the urine, but do not alter the electrolyte balance.
Osmotic diuretics are mainly used to treat cerebral edema and glaucoma.
Choice D is wrong because loop diuretics, such as furosemide, can also cause low potassium levels in the blood.
They work by inhibiting the reabsorption of sodium and water in the loop of Henle, a part of the kidney.
Loop diuretics are used to treat edema and heart failure.
Normal ranges for potassium in the blood are 3.5 to 5.0 millimoles per liter (mmol/L).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Intermittent claudication is a condition where leg pain is produced upon increased activity and ischemia to tissues, but then the pain is reduced with rest.This is because the lack of oxygen to the muscles causes pain, and resting allows the blood flow to resume.
Choice B, sporadic ischemia, is wrong because it is not a specific condition, but a general term for reduced blood supply to a tissue or organ.
Choice C, angina, is wrong because it is a chest pain caused by reduced blood flow to the heart, not the legs.
Choice D, paresthesia, is wrong because it is a sensation of tingling, numbness, or prickling in the skin, not pain.
It can be caused by various conditions, such as nerve damage, diabetes, or Raynaud’s disease.
Correct Answer is A
Explanation
Digoxin is a medication that can help the heart pump more blood and slow down the heart rate in certain conditions, such as heart failure and atrial fibrillation.However, digoxin has a narrow therapeutic range, which means that too much or too little of it can be harmful.The therapeutic range of digoxin levels in the blood is 0.5-2 ng/mL, and the toxic level is >2.4 ng/mL.Digoxin should be held if the resting apical pulse of an infant is <90 bpm, an older child is <70 bpm, or an adult is <60 bpm.A pulse of 48/min in an adult is too low and could indicate digoxin toxicity, which can cause life-threatening arrhythmias. Therefore, the nurse should withhold the dose and notify the health care provider immediately.
Choice B is wrong because notifying the health care provider and monitoring the patient’s vital signs are not enough.
The nurse should also withhold the dose to prevent further exposure to digoxin.
Choice C is wrong because rechecking the pulse, making sure to count for 1 full minute, is not necessary.The nurse should already have counted the pulse for 1 full minute before administering digoxin, as per standard procedure.
Choice D is wrong because administering the dose could worsen the patient’s condition and increase the risk of digoxin toxicity and arrhythmias.
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