Nokea
Miriam, a college student with acute rhinitis sees the campus nurse because of excessive nasal drainage. The nurse asks the patient about the color of the drainage. In acute rhinitis, nasal drainage normally is:
- A. Yellow
- B. Green
- C. Clear
- D. Gray
Correct Answer: C
Rationale: The correct answer is C: Clear. In acute rhinitis, the nasal drainage is typically clear because it is caused by viral infections or allergies, which result in clear mucus production. Yellow or green drainage may indicate a bacterial infection, which is not typically associated with acute rhinitis. Gray drainage is uncommon in nasal discharge and may suggest a more serious underlying condition. Therefore, the nurse asked about the color of the drainage to assess the nature of the infection and determine the appropriate course of treatment.
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When examining the posterior pharynx and tonsils, which of the following objective data does the nurse note?
- A. Difficulty in sneezing
- B. Suppressed gag reflex
- C. Deformities
- D. Inflammation
Correct Answer: D
Rationale: The correct answer is D. Inflammation is a key finding during examination of the posterior pharynx and tonsils, especially in infections such as tonsillitis. A (difficulty in sneezing) is unrelated to pharyngeal assessment. B (suppressed gag reflex) might indicate neurological issues but isn't typically noted during routine exams. C (deformities) is rare unless there's structural abnormality.
Actual exchange of gases in the lungs occurs in the
- A. bronchi.
- B. alveoli.
- C. bronchioles.
- D. tracheas.
Correct Answer: B
Rationale: The correct answer is B: alveoli. Alveoli are tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place through diffusion. This process is crucial for oxygenating the blood and removing carbon dioxide. Bronchi (A), bronchioles (C), and trachea (D) are all parts of the respiratory system, but they do not participate directly in gas exchange. Bronchi are the main airways that branch off from the trachea, bronchioles are smaller airways that lead to the alveoli, and the trachea is the main airway that carries air to and from the lungs.
Hemoglobin
- A. tends to release oxygen under warmer temperatures
- B. picks up more oxygen the higher its partial pressure.
- C. picks up more oxygen when it is saturated
- D. will give up oxygen when the partial pressure of oxygen is higher than it is in the lungs.
Correct Answer: B
Rationale: The correct answer is B because hemoglobin follows the principle of partial pressure, which states that gases move from areas of higher partial pressure to lower partial pressure. Therefore, hemoglobin will pick up more oxygen when the partial pressure of oxygen is higher, such as in the lungs. Choice A is incorrect because hemoglobin actually releases oxygen at higher temperatures. Choice C is incorrect because hemoglobin picks up oxygen when it is not fully saturated. Choice D is incorrect because hemoglobin releases oxygen when the partial pressure of oxygen is higher, not when it is lower.
All of the following pairings are correct (assuming normal person at rest) EXCEPT
- A. Tidal volume = 500 ml
- B. Alveolar ventilation = 7500 ml
- C. Pulmonary blood flow = 5000 ml/min
- D. Functional residual capacity = volume of gas in lung after normal expiration
Correct Answer: B
Rationale: The correct answer is B: Alveolar ventilation = 7500 ml. Alveolar ventilation is the volume of fresh air that reaches the alveoli per minute. It is calculated by subtracting the dead space ventilation from the tidal volume and then multiplying by the respiratory rate. In a normal person at rest, the average alveolar ventilation is around 4200 ml/min, not 7500 ml/min. Therefore, choice B is incorrect. Choices A, C, and D are correct because tidal volume is typically around 500 ml, pulmonary blood flow is about 5000 ml/min, and functional residual capacity is the volume of gas in the lung after normal expiration.
The home health nurse is educating a 60-year-old patient with emphysema with a nutritional deficit. Which instructions should the nurse avoid including in the teaching plan to address this problem?
- A. Rest before eating.
- B. Avoiding gas-producing foods.
- C. Eat four to six small meals instead of three large meals.
- D. Lie down after eating.
Correct Answer: D
Rationale: The correct answer is D because lying down after eating can increase the risk of acid reflux and heartburn in patients with emphysema.
A: Rest before eating is important as it can reduce shortness of breath during meals.
B: Avoiding gas-producing foods can help prevent bloating and discomfort.
C: Eating four to six small meals instead of three large meals is beneficial for easier digestion and energy management.
In summary, D is incorrect because it can worsen symptoms, while A, B, and C are all helpful strategies for managing nutritional deficits in patients with emphysema.