Nokea
Which age-related changes in the respiratory system cause decreased secretion clearance?
- A. Decreased functional cilia
- B. Decreased force of cough
- C. Decreased chest wall compliance
- D. Small airway closure earlier in expiration
Correct Answer: D
Rationale: The correct answer is D because small airway closure earlier in expiration can lead to decreased secretion clearance, making it a risk factor for respiratory problems.
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Tracheal respiration is found in
- A. Insects and Millipedes
- B. Scorpion and Prawn
- C. Pila and Lobuster
- D. Starfish and Sea cucumber
Correct Answer: A
Rationale: Tracheal respiration is a type of respiration system found in insects and millipedes. This system involves the use of tracheae, which are tiny tubes that deliver oxygen directly to tissues. Insects and millipedes have evolved this efficient respiratory system to support their high metabolic rates. Scorpions and prawns (Choice B), Pila and lobsters (Choice C), and starfish and sea cucumbers (Choice D) do not have tracheal respiration systems. Therefore, the correct answer is A.
The nurse reading a tuberculin skin test (TST) on a new employee who lives in the Midwest,
is 20-years-old, and has no known history of contact with any people with tuberculosis (TB).
The nurse should interpret the reading as positive if the area around the injection site has an
induration of how many millimeters?
- A. 0 mm
- B. 5 mm
- C. 10 mm
- D. 15 mm
Correct Answer: D
Rationale: The correct answer is D (15 mm) because for a low-risk individual like the new employee, a TST is considered positive if the induration is 15 mm or greater. This is based on the guidelines from the Centers for Disease Control and Prevention (CDC) for interpreting TST results in individuals without known risk factors. Choices A, B, and C are incorrect because an induration of 0 mm, 5 mm, or 10 mm, respectively, would not meet the criteria for a positive TST in this low-risk individual. It is important to consider the individual's risk factors and follow established guidelines to accurately interpret TST results.
The nurse doing rounds at the beginning of a shift notices a sputum specimen in a container sitting on the bedside table in a patient's room. The nurse asks the patient when he produced the sputum specimen and he states that the specimen is about 4 hours old. What action should the nurse take?
- A. Immediately take the sputum specimen to the laboratory.
- B. Discard the specimen and assist the patient in obtaining another specimen.
- C. Refrigerate the sputum specimen and submit it once it is chilled.
- D. Add a small amount of normal saline to moisten the specimen.
Correct Answer: B
Rationale: The correct answer is B: Discard the specimen and assist the patient in obtaining another specimen. It is important to discard the sputum specimen because it has been sitting for 4 hours, which could lead to contamination and inaccurate test results. The nurse should assist the patient in obtaining a fresh specimen to ensure accurate testing.
Choice A is incorrect because taking the old specimen to the lab could lead to inaccurate results. Choice C is incorrect because refrigerating the old specimen won't prevent contamination. Choice D is incorrect because adding saline to the old specimen can alter its composition and lead to inaccurate test results.
Breathing rate is more rapid when the ...... area is more active
- A. Apneustic
- B. pneumotaxic
- C. medullary rhythmicity
- D. none
Correct Answer: B
Rationale: The correct answer is B: pneumotaxic. The pneumotaxic area is located in the pons and regulates the rate and depth of breathing by inhibiting the inspiratory area in the medulla. When the pneumotaxic area is more active, it limits the duration of inspiratory bursts, causing a more rapid breathing rate.
A: Apneustic area is located in the lower pons and promotes prolonged inspiration, leading to slower breathing rate.
C: Medullary rhythmicity is responsible for setting the basic rhythm of breathing, not directly affecting breathing rate.
D: None is incorrect as there is a specific brain area, pneumotaxic, that influences breathing rate.
A nurse is assessing a client who has suffered a nasal fracture. Which assessment would the nurse perform first?
- A. Facial pain
- B. Vital signs
- C. Bone displacement
- D. Airway patency
Correct Answer: D
Rationale: The correct answer is D: Airway patency. Ensuring airway patency is the top priority in any client assessment, especially in cases of facial trauma like a nasal fracture. This is because compromised airway can lead to respiratory distress or failure. Assessing airway patency should always be the first step to ensure the client's ability to breathe.
Facial pain (A) may be important but does not address immediate life-threatening concerns. Vital signs (B) are important but assessing airway patency takes precedence for client safety. Bone displacement (C) is relevant but does not address the immediate need to maintain airway patency.