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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.
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A nurse in a community health center is assessing the results of the purified protein derivative (PPD) testing she performed to screen for tuberculosis (TB). She interprets which of the following results as positive for a 6-year-old client with no risk factors for TB?
- A. 4-mm erythema
- B. 5-mm induration
- C. 10-mm wheal
- D. 15-mm induration
Correct Answer: D
Rationale: The correct answer is D: 15-mm induration. In PPD testing, an induration (hardened raised area) of 15 mm or more is considered positive for TB in individuals with no risk factors. Choices A, B, and C are incorrect because an erythema of 4 mm, induration of 5 mm, or wheal of 10 mm are not indicative of a positive TB test result in a low-risk individual. Therefore, the interpretation of a 15-mm induration would lead the nurse to consider the test positive for TB in this case.
A nurse in a clinic is caring for a client who came to be tested for tuberculosis (TB) after a close family member tested positive. The nurse should know that which of the following is a diagnostic tool used to screen for TB?
- A. Sputum culture for acid-fast bacillus (AFB)
- B. Mantoux skin test
- C. BCG vaccine
- D. Chest X-ray
Correct Answer: B
Rationale: The Mantoux skin test, also known as the tuberculin skin test, is a diagnostic tool used to screen for tuberculosis (TB). It involves injecting a small amount of tuberculin under the top layer of the skin on the forearm and then checking for a reaction within 48-72 hours. This test helps identify individuals who have been exposed to the TB bacteria. Sputum culture for acid-fast bacillus (AFB) is used to confirm TB diagnosis in individuals suspected of having active TB. The BCG vaccine is used to prevent severe forms of tuberculosis in high-risk individuals but is not a diagnostic tool. While a chest X-ray can show signs of active TB disease, it is not a primary diagnostic tool for screening purposes.
A client prescribed home oxygen therapy is receiving discharge teaching from a nurse. Which statement by the client indicates a need for further teaching?
- A. I will be able to tell the amount of oxygen being delivered by looking at the flowmeter.
- B. I should contact my doctor if I notice a decrease in my ability to concentrate.
- C. I will ensure that visitors smoke outside.
- D. I should see a frosty buildup on the tank when I refill my portable oxygen.
Correct Answer: A
Rationale: The correct answer is A. The client's statement indicates a need for further teaching because the flowmeter indicates the flow rate of oxygen, not the total amount of oxygen being delivered. Choices B, C, and D demonstrate understanding of safety measures and indications for seeking medical attention in relation to home oxygen therapy, making them appropriate statements.
A nurse at a provider's office receives a phone call from a client who reports unrelieved chest pain after taking a nitroglycerin (Nitrostat) tablet 5 minutes ago. Which of the following is an appropriate response by the nurse?
- A. Tell the client to take an aspirin.
- B. Instruct the client to call 911.
- C. Have the client take another nitroglycerin tablet in 15 minutes.
- D. Advise the client to come to the office.
Correct Answer: B
Rationale: In this scenario, the client reporting unrelieved chest pain after taking a nitroglycerin tablet could be indicative of a serious cardiac event. Instructing the client to call 911 is the most appropriate response because immediate medical attention is necessary for chest pain that is not relieved by nitroglycerin. Telling the client to take an aspirin (Choice A) may not address the urgency of the situation, and aspirin might not be appropriate depending on the client's medical history. Having the client take another nitroglycerin tablet (Choice C) without relief could lead to overdosage. Advising the client to come to the office (Choice D) is not the best course of action when dealing with a potential cardiac emergency that requires immediate intervention.
A client with chronic obstructive pulmonary disease (COPD expresses difficulty in bringing up bronchial secretions. Which action should the nurse take to help the client with tenacious bronchial secretions?
- A. Maintaining a semi-Fowler's position as much as possible
- B. Administering oxygen via nasal cannula at 2 L per min
- C. Helping the client select a low-salt diet
- D. Encouraging the client to drink eight glasses of water daily
Correct Answer: D
Rationale: Encouraging the client to drink eight glasses of water daily is the most appropriate action to help with tenacious bronchial secretions in COPD. Increased fluid intake can help in thinning the mucus, making it easier for the client to cough up and clear secretions. This addresses the client's difficulty in bringing up bronchial secretions. Maintaining a semi-Fowler's position can aid in breathing but does not directly address the issue of clearing secretions. Administering oxygen may be necessary for COPD, but it does not specifically target the tenacious secretions. Selecting a low-salt diet can be helpful in managing COPD in general, but it does not directly address the client's current concern of clearing bronchial secretions.