Nokea
Which of the following nursing interventions regarding nutrition is used until the suture line heals, usually 10 to 14 days postoperatively?
- A. Enteral feedings
- B. Meticulous mouth care every 4 hours
- C. Gradual advancement of the diet
- D. Reassurance that the sense of taste will return
Correct Answer: A
Rationale: The correct answer is A. Enteral feedings bypass the oral route, allowing the suture line to heal without strain. B (meticulous mouth care) is important but not directly related to nutrition. C (gradual advancement of the diet) occurs later. D (reassurance) addresses psychological concerns but not nutritional needs.
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The nose serves all the following functions EXCEPT:
- A. as the initiator of the cough reflex
- B. warming and humidifying the air
- C. cleansing the air
- D. as a passageway for air movement
Correct Answer: A
Rationale: The correct answer is A: as the initiator of the cough reflex. The nose does not initiate the cough reflex; rather, it is the respiratory system's response to irritants in the airways. The nose warms, humidifies, and cleanses the air as it passes through, and it also serves as a passageway for air movement. Therefore, the nose does not directly trigger the cough reflex.
The nurse is caring for a patient immediately postoperative after a left pneumonectomy. How should the nurse position the patient?
- A. In high Fowler position
- B. In semi-Fowler position
- C. In a right side-lying position
- D. In a left side-lying position
Correct Answer: D
Rationale: Step-by-step rationale for why choice D is correct:
1. Post-pneumonectomy, positioning the patient on the left side allows the remaining lung to expand fully.
2. This position promotes better ventilation and perfusion, aiding in oxygenation.
3. Placing the patient on the left side also helps prevent pressure on the surgical site.
4. The left side-lying position also facilitates drainage and prevents pooling of secretions in the surgical area.
Summary of why other choices are incorrect:
A. High Fowler position may cause increased pressure on the surgical site and impede lung expansion.
B. Semi-Fowler position may not optimize lung expansion and could lead to decreased oxygenation.
C. Right side-lying position is not ideal as it does not facilitate full expansion of the remaining lung and may cause pooling of secretions.
2,3 DPG causes shifting of Oxygen dissociation curve in Adult Hb to Right because
- A. It increases Oxygen affinity for Hemoglobin
- B. It binds to Beta chain of Hb
- C. Its concentration is high in adults
- D. It lacks Hb binding sites
Correct Answer: B
Rationale: The correct answer is B because 2,3 DPG binds to the Beta chain of Hemoglobin, reducing its oxygen affinity, causing a right shift in the Oxygen dissociation curve. This change allows for easier oxygen unloading in tissues. Choice A is incorrect as 2,3 DPG decreases, not increases, oxygen affinity. Choice C is irrelevant as its concentration is not a factor in the shifting of the curve. Choice D is incorrect as 2,3 DPG does bind to Hemoglobin, specifically to the Beta chain.
A nurse is caring for a client with acute respiratory distress syndrome. Which of the following would the nurse expect to note in the client?
- A. Decreased respiratory rate.
- B. Pallor.
- C. Low arterial PaO2.
- D. An elevated arterial PaO2.
Correct Answer: C
Rationale: The correct answer is C: Low arterial PaO2. In acute respiratory distress syndrome (ARDS), there is impaired gas exchange leading to hypoxemia. Low arterial PaO2 indicates poor oxygenation in the blood, a hallmark of ARDS. Decreased respiratory rate (A) is unlikely as the body compensates by increasing respiratory effort. Pallor (B) is a general sign of reduced blood flow and not specific to ARDS. An elevated arterial PaO2 (D) would not be expected in ARDS, as it signifies adequate oxygenation.
Of the four parts of respiration the part when oxygen and carbon dioxide are exchanged in the body's tissue cells is:
- A. pulmonary ventilation
- B. external respiration
- C. transport of respiratory gases
- D. internal respiration
Correct Answer: D
Rationale: The correct answer is D: internal respiration. This is the part of respiration where oxygen and carbon dioxide are exchanged in the body's tissue cells. During internal respiration, oxygen is delivered to the cells and carbon dioxide is removed. Pulmonary ventilation (choice A) refers to the process of breathing where air is moved in and out of the lungs. External respiration (choice B) is the exchange of gases between the lungs and blood. Transport of respiratory gases (choice C) involves the circulation of oxygen and carbon dioxide in the bloodstream. Internal respiration specifically focuses on the exchange of gases within the tissue cells, making it the correct choice in this scenario.