Nokea
The common drugs used against TB is
- A. Para amino salicylic acid (PAS)
- B. Ethambutol
- C. Steptomycin
- D. All these
Correct Answer: D
Rationale: The correct answer is D, "All these." PAS, Ethambutol, and Streptomycin are all common drugs used against TB. PAS inhibits bacterial folic acid synthesis, Ethambutol inhibits cell wall synthesis, and Streptomycin inhibits protein synthesis. Using a combination of these drugs helps to target different aspects of TB bacteria, reducing the likelihood of resistance development. Therefore, all of these drugs are essential in the treatment of TB, making choice D the correct answer.
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Muscles attached to diaphragm contract during inspiration to make it
- A. Flat
- B. Dome-shaped
- C. Concave
- D. Rotate
Correct Answer: A
Rationale: The correct answer is A: Flat. During inspiration, the muscles attached to the diaphragm contract, causing it to flatten. This action increases the volume of the thoracic cavity, allowing air to rush into the lungs. The diaphragm moving downward creates a larger space for the lungs to expand. Choices B, C, and D are incorrect because the diaphragm does not become dome-shaped, concave, or rotate during inspiration. The key concept here is understanding the role of the diaphragm in the breathing process and how its contraction affects the shape of the thoracic cavity.
A client who is human immunodeficiency virus-positive has had a Mantoux skin test. The nurse notes a 7-mm area of induration at the site of the skin test. The nurse interprets the results as:
- A. Positive
- B. Negative
- C. Inconclusive
- D. Indicating the need for repeat testing.
Correct Answer: A
Rationale: The correct answer is A: Positive. In individuals with HIV, a positive Mantoux test is considered when the induration is 5 mm or greater. A 7-mm area of induration indicates a positive result, suggesting an immune response to the tuberculin antigen, potentially due to latent tuberculosis infection. The other choices are incorrect because a 7-mm induration in an HIV-positive client is not considered negative, inconclusive, or indicative of the need for repeat testing based on current guidelines.
which factors affect on exercise.
- A. body temperature
- B. smoking
- C. physical exercise
- D. All of the above
Correct Answer: D
Rationale: The correct answer is D, "All of the above." Body temperature (A) is a factor as it affects how efficiently muscles work during exercise. Smoking (B) can negatively impact exercise performance and overall health. Physical exercise (C) is an obvious factor that directly influences exercise outcomes. Therefore, all three factors are interconnected and collectively influence an individual's exercise capacity and performance.
Hemoglobin gives up O2 when
- A. carbon dioxide concentrations are high
- B. body temperature is lowered.
- C. pH values are high
- D. CO2 concentrations are low
Correct Answer: A
Rationale: The correct answer is A: carbon dioxide concentrations are high. When carbon dioxide levels are high, it leads to a decrease in blood pH, triggering hemoglobin to release oxygen more readily through the Bohr effect. This is a physiological response to maintain homeostasis. The other choices (B, C, D) do not directly affect the release of oxygen from hemoglobin.
One way to improve respiratory performance with age is to
- A. eat smaller meals
- B. stop smoking
- C. sleep longer
- D. maintain normal glucose levels
Correct Answer: B
Rationale: The correct answer is B: stop smoking. Smoking can damage the lungs and reduce respiratory function. By quitting smoking, lung health can improve, leading to better respiratory performance with age. Eating smaller meals, sleeping longer, and maintaining normal glucose levels do not directly impact respiratory performance. Smoking cessation is the most effective way to improve lung function and overall respiratory health.