Nokea
An oxygen delivery system is prescribed for a male client with chronic obstructive pulmonary disease to deliver a precise oxygen concentration. Which of the following types of oxygen delivery systems would the nurse anticipate to be prescribed?
- A. Face tent
- B. Venturi mask
- C. Aerosol mask
- D. Tracheostomy collar
Correct Answer: B
Rationale: The correct answer is B: Venturi mask. This type of oxygen delivery system allows for precise oxygen concentration delivery by adjusting the oxygen flow rate and selecting the appropriate color-coded adaptor. Venturi masks are commonly used in clients with COPD to ensure accurate oxygen delivery and prevent oxygen toxicity.
A: Face tent provides high humidity but does not allow for precise oxygen concentration delivery.
C: Aerosol mask is used for humidification and medication delivery, not for precise oxygen concentration.
D: Tracheostomy collar is used for clients with a tracheostomy, not for precise oxygen concentration in COPD.
You may also like to solve these questions
A patient is scheduled to have excess pleural fluid aspirated with a needle in order to relieve her dyspnea. The patient inquires about the normal function of pleural fluid. What should the nurse describe?
- A. It allows for full expansion of the lungs within the thoracic cavity.
- B. It prevents the lungs from collapsing within the thoracic cavity.
- C. It limits lung expansion within the thoracic cavity.
- D. It lubricates the movement of the thorax and lungs.
Correct Answer: D
Rationale: The correct answer is D: It lubricates the movement of the thorax and lungs. Pleural fluid acts as a lubricant between the layers of the pleura, reducing friction and allowing smooth movement during respiration. This function is crucial for the efficient expansion and contraction of the lungs during breathing.
Explanation:
1. A (It allows for full expansion of the lungs within the thoracic cavity): While pleural fluid does contribute to lung expansion, its main role is not to solely allow for full expansion.
2. B (It prevents the lungs from collapsing within the thoracic cavity): This is incorrect as the pleural pressure, rather than the pleural fluid, prevents lung collapse.
3. C (It limits lung expansion within the thoracic cavity): This is incorrect as pleural fluid actually facilitates lung expansion by reducing friction.
Tidal volume in human beings is
- A. 1000 ml
- B. 1500 ml
- C. 500 ml
- D. 4.5 ml
Correct Answer: C
Rationale: The correct answer is C: 500 ml. Tidal volume refers to the amount of air inspired or expired during normal breathing. In adult humans, the average tidal volume is around 500 ml. This volume represents the typical amount of air exchanged with each breath. Choices A, B, and D are incorrect because they do not accurately reflect the standard tidal volume in human beings. Option A (1000 ml) and B (1500 ml) are too high for a normal tidal volume, while option D (4.5 ml) is too low. Therefore, the correct answer is C as it aligns with the average tidal volume in human beings.
A male client with chronic obstructive pulmonary disease (COPD) is recovering from a myocardial infarction. Because the client is extremely weak and can't produce an effective cough, the nurse should monitor closely for:
- A. Pleural effusion
- B. Pulmonary edema
- C. Atelectasis
- D. Oxygen toxicity
Correct Answer: C
Rationale: The correct answer is C: Atelectasis. In a client with COPD recovering from a myocardial infarction, the weakened state and ineffective cough can lead to the collapse of alveoli, causing atelectasis. This condition can further impair gas exchange and oxygenation, leading to respiratory distress. Monitoring for atelectasis is crucial to prevent complications. Pleural effusion (A) and pulmonary edema (B) are not directly related to the client's condition and symptoms. Oxygen toxicity (D) is a potential concern with high oxygen therapy but is not the most immediate risk for this client scenario.
Which information from a client helps the nurse confirm the previous diagnosis of chronic stable angina?
- A. The pain wakes me up at night.
- B. The pain is level 3 to 5 (0 to 10 scale).
- C. The pain has gotten worse over the last week.
- D. The pain goes away after I stop jogging.
Correct Answer: D
Rationale: The correct answer is D because chronic stable angina is characterized by chest pain or discomfort that is triggered by physical exertion or emotional stress and relieved by rest or medication. Therefore, the fact that the pain goes away after stopping jogging aligns with the typical pattern of chronic stable angina.
A: The pain waking the client up at night is more indicative of unstable angina or a heart attack.
B: The level of pain on a scale does not provide conclusive evidence of chronic stable angina.
C: Pain worsening over time may suggest unstable angina or a heart attack rather than chronic stable angina.
The partial pressure of oxygen in the interstitial space of peripheral tissues is approximately
- A. 40 mm Hg
- B. 45 mm Hg
- C. 50 mm Hg
- D. 70 mm Hg
Correct Answer: A
Rationale: The correct answer is A: 40 mm Hg. In peripheral tissues, oxygen is delivered by the blood through capillaries. The partial pressure of oxygen in the interstitial space of peripheral tissues is lower than in the blood, around 40 mm Hg. This allows for the diffusion of oxygen from capillaries to cells. Choice B (45 mm Hg) and C (50 mm Hg) are slightly higher pressures and would not promote efficient oxygen diffusion. Choice D (70 mm Hg) is closer to arterial blood oxygen levels and would not allow sufficient oxygen release to tissues. Thus, the correct answer is A as it reflects the physiological conditions necessary for effective oxygen delivery to cells.