Nokea
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.
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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.
A nurse working in a geriatric clinic sees clients with "cold" symptoms and rhinitis. The primary health care provider (PHCP) often leaves a prescription for diphenhydramine. What action by the nurse is best?
- A. Teach the client about possible drowsiness.
- B. Instruct the client to drink plenty of water.
- C. Consult with the PHCP about the medication.
- D. Encourage the client to take the medication with food.
Correct Answer: C
Rationale: The correct answer is C: Consult with the PHCP about the medication. This is the best action because diphenhydramine may not be the most appropriate medication for older adults due to potential side effects like increased risk of falls, confusion, and urinary retention. Consulting with the PHCP will ensure that the medication is safe and effective for the client.
A: Teaching about drowsiness is important but not the priority.
B: Drinking water is generally good advice but not specific to diphenhydramine.
D: Taking medication with food can help reduce stomach upset but doesn't address the concerns related to diphenhydramine in older adults.
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.
The nurse is caring for a patient with a lower respiratory tract infection. When planning a focused respiratory assessment, the nurse should know that this type of infection most often causes what?
- A. Impaired gas exchange
- B. Collapsed bronchial structures
- C. Necrosis of the alveoli
- D. Closed bronchial tree
Correct Answer: A
Rationale: Step 1: Lower respiratory tract infection affects the lungs where gas exchange occurs.
Step 2: Infections can lead to inflammation and fluid buildup in the lungs.
Step 3: This impairs the exchange of oxygen and carbon dioxide.
Step 4: Impaired gas exchange can lead to hypoxemia and respiratory distress.
Step 5: Therefore, the correct answer is A: Impaired gas exchange. Other choices are incorrect because they do not directly relate to the physiological consequences of a lower respiratory tract infection.
Residual volume in lungs of an average human is
- A. 500 ml
- B. 3-4.5 ml
- C. 1000 ml
- D. 1500 ml
Correct Answer: D
Rationale: The correct answer is D (1500 ml) because residual volume refers to the amount of air left in the lungs after maximal exhalation, which is around 1200-1500 ml in an average human. This volume is necessary to keep the alveoli inflated and prevent lung collapse. Choices A (500 ml), B (3-4.5 ml), and C (1000 ml) are incorrect because they do not accurately represent the typical residual volume in the lungs of an average human. Choice A is too low, choices B and C are significantly below the actual range of residual volume.