Nokea
Why may an ice collar be ordered for a client who is undergoing drainage of a peritonsillar abscess?
- A. To reduce swelling and pain
- B. To help the client drink fluids
- C. To prevent respiratory obstruction
- D. To prevent excessive bleeding
Correct Answer: A
Rationale: The correct answer is A. An ice collar reduces swelling and pain by constricting blood vessels and numbing the area. B (helping the client drink fluids) is unrelated. C (preventing respiratory obstruction) is not the primary purpose of an ice collar. D (preventing excessive bleeding) is managed differently, usually with direct pressure or medication.
You may also like to solve these questions
Oxygen dissociation curve of myoglobin is
- A. Hypobolic
- B. Hyperbolic
- C. Linear
- D. Sigmoid
Correct Answer: B
Rationale: The correct answer is B: Hyperbolic. Myoglobin exhibits a hyperbolic oxygen dissociation curve due to its high affinity for oxygen, allowing it to bind oxygen quickly and efficiently at low partial pressures. This curve represents a simple one-to-one binding relationship between myoglobin and oxygen. The other choices are incorrect because A (Hypobolic) does not accurately describe myoglobin's binding characteristics, C (Linear) is not representative of the typical oxygen binding behavior of myoglobin, and D (Sigmoid) is more characteristic of hemoglobin, which exhibits cooperative binding of oxygen.
Hemoglobin affinity for Oxygen is to the P50 (O2 tension that produces 50% saturation of Hb)
- A. Directly related
- B. Inversely related
- C. Not related
- D. Related
Correct Answer: B
Rationale: The correct answer is B. Hemoglobin affinity for oxygen is inversely related to P50. When P50 is lower, hemoglobin has higher affinity for oxygen, meaning it binds oxygen more readily at lower oxygen tensions. Conversely, when P50 is higher, hemoglobin has lower affinity for oxygen. This relationship is crucial for the efficient loading and unloading of oxygen in tissues. Choices A, C, and D are incorrect because hemoglobin affinity for oxygen is not directly related, unrelated, or simply related to P50.
The pulmonary ventilation rate for someone with tidal volume of 500 mL and a respiration rate of 14 bpm is:
- A. 6,000 L/min
- B. 6 L/min
- C. 7 L/min
- D. 4.2 L/min
Correct Answer: C
Rationale: To calculate pulmonary ventilation rate, multiply tidal volume by respiration rate. In this case, 500 mL * 14 bpm = 7,000 mL/min. Converting to liters, it's 7 L/min. Choice A is incorrect as it miscalculates the conversion from mL to L, B is incorrect due to incorrect calculation, and D is incorrect as it's not the accurate result of the multiplication.
Hypoxia
- A. causes hyperventilation
- B. may cause headaches, nausea, and lethargy.
- C. can lead to loss of consciousness and death
- D. all of the above
Correct Answer: D
Rationale: The correct answer is D because hypoxia, which is a condition of low oxygen levels in the body, can indeed lead to hyperventilation, as the body tries to compensate. It can also cause symptoms like headaches, nausea, and lethargy due to the lack of oxygen reaching the brain and other organs. Severe hypoxia can lead to loss of consciousness and even death if oxygen levels are not restored promptly. Therefore, all the statements in choices A, B, and C are true in relation to hypoxia, making option D the correct choice.
For which client(s) would you assign the nursing care to the new RN under your supervision? (Choose all that apply.)
- A. A 38-year-old client with moderate persistent asthma awaiting discharge
- B. A 63-year-old client with tracheostomy needing trach care every shift
- C. A 56-year-old client with lung cancer just returned from left lower lobectomy
- D. A 49-year-old new admission client with new diagnosis of esophageal cancer
Correct Answer: D
Rationale: The correct answer includes A and D. Assigning care for clients with moderate persistent asthma (A) and a new diagnosis of esophageal cancer (D) is appropriate for a new RN under supervision. Clients requiring tracheostomy care (B) or post-lobectomy recovery (C) involve complex care unsuitable for a new RN.