Nokea
A client with angina pectoris is being taught about starting therapy with nitroglycerin (Nitrostat) tablets. The nurse should instruct the client to take the medication
- A. after each meal and at bedtime.
- B. every 15 minutes during an acute attack.
- C. at the first indication of chest pain.
- D. with 8 oz of water.
Correct Answer: C
Rationale: Nitroglycerin (Nitrostat) tablets are used to relieve chest pain associated with angina. The client should take the medication at the first indication of chest pain to help dilate blood vessels and improve blood flow to the heart muscle. Choice A is incorrect because nitroglycerin should not be scheduled after each meal or at bedtime. Choice B is incorrect as taking the medication every 15 minutes during an acute attack is excessive and not recommended. Choice D is incorrect because while it is important to take nitroglycerin with water, the timing of water intake is not as critical as taking the medication at the first sign of chest pain.
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A client who is HIV-positive, has pneumonia and is not responding to antibiotic therapy may have active pulmonary tuberculosis (TB) due to exposure history and symptoms of night sweats and hemoptysis. Which test is the most reliable to confirm the diagnosis of active pulmonary TB?
- A. Chest x-ray
- B. Presence of bronchophony
- C. Mantoux test
- D. Sputum culture for acid-fast bacillus
Correct Answer: D
Rationale: The correct answer is D: Sputum culture for acid-fast bacillus. The most reliable test to confirm the diagnosis of active pulmonary TB is the sputum culture for acid-fast bacillus. This test helps identify the presence of Mycobacterium tuberculosis, the causative agent of TB, in the sputum. Chest x-rays can show characteristic findings of TB but are not as reliable as sputum cultures for confirmation. Bronchophony is a test for assessing vocal resonance and is not specific for TB diagnosis. The Mantoux test is a screening test for TB exposure but cannot confirm active disease.
A nurse is caring for a client who came to the emergency department reporting chest pain. The provider suspects a myocardial infarction. While waiting for the laboratory to report the client's troponin levels, the client asks what this blood test will show. The nurse should explain that troponin is
- A. an enzyme that indicates damage to brain, heart, and skeletal muscle tissues.
- B. a protein whose levels reflect the risk for coronary artery disease.
- C. a heart muscle protein that appears in the bloodstream when there is damage to the heart.
- D. a protein that helps transport oxygen throughout the body.
Correct Answer: C
Rationale: The correct answer is that troponin is a heart muscle protein that appears in the bloodstream when there is damage to the heart. Troponin is a specific marker for heart muscle damage, particularly seen in conditions like myocardial infarction. Choice A is incorrect as troponin is not an enzyme that indicates damage to brain and skeletal muscle tissues. Choice B is incorrect as troponin is not a protein whose levels reflect the risk for coronary artery disease; it indicates heart muscle damage. Choice D is incorrect as troponin is not a protein that helps transport oxygen throughout the body; its presence in the bloodstream is specific to heart muscle damage.
A client is receiving oxygen therapy via a nasal cannula. The nurse should explain that this method of oxygen delivery does which of the following?
- A. Delivers a specific concentration of oxygen constantly
- B. Delivers a high concentration of oxygen
- C. Delivers a low concentration of oxygen
- D. Restricts the client's ability to eat, speak, or drink
Correct Answer: A
Rationale: A nasal cannula is a device used for delivering supplemental oxygen to patients. It delivers a specific concentration of oxygen constantly, typically ranging from 1-6 liters per minute. This method is effective for patients who require low to moderate levels of oxygen. Choices B and C are incorrect because a nasal cannula does not deliver a high concentration of oxygen and is not considered a low concentration delivery method. Choice D is incorrect because a nasal cannula does not restrict the client's ability to eat, speak, or drink; it allows them to perform these activities while receiving oxygen therapy.
A client hospitalized with deep vein thrombosis has been on IV heparin for 5 days. The provider prescribes oral warfarin (Coumadin) without discontinuing the heparin. The client asks the nurse why both anticoagulants are necessary. Which of the following is an appropriate nursing response?
- A. The Coumadin takes several days to work, so the IV heparin will be used until the Coumadin reaches a therapeutic level.
- B. I will call the provider to get a prescription for discontinuing the IV heparin today
- C. Both heparin and Coumadin work together to dissolve the clots.
- D. The IV heparin increases the effects of the Coumadin and decreases the length of your hospital stay.
Correct Answer: A
Rationale: The correct answer is, 'The Coumadin takes several days to work, so the IV heparin will be used until the Coumadin reaches a therapeutic level.' Warfarin (Coumadin) is an oral anticoagulant that takes time to reach its full effect, typically a few days. In the meantime, IV heparin is used to provide immediate anticoagulation until the Coumadin levels become therapeutic. Option B is incorrect because discontinuing the IV heparin abruptly without reaching a therapeutic level with Coumadin can increase the risk of clot formation. Option C is incorrect because heparin and Coumadin do not work together to dissolve clots; they both have anticoagulant effects but work differently. Option D is incorrect because IV heparin does not directly increase the effects of Coumadin; they have different mechanisms of action.
When caring for a client with COPD, which intervention should the nurse include in the care plan?
- A. Restrict the client's fluid intake to less than 2 L/day.
- B. Encourage the client to use the upper chest for respiration.
- C. Have the client use the early-morning hours for exercise and activity.
- D. Instruct the client to use pursed-lip breathing.
Correct Answer: D
Rationale: The correct answer is to instruct the client to use pursed-lip breathing. This technique helps improve breathing efficiency by keeping the airways open during exhalation and reducing air trapping. Restricting fluid intake to less than 2 L/day is not appropriate for a client with COPD, as they need adequate hydration. Using the upper chest for respiration is incorrect as it promotes shallow breathing, which is not ideal for COPD patients. While exercise is beneficial, early-morning hours may not be the best time for clients with COPD due to increased respiratory distress in the morning.