Nokea
Which of the ff is the effect of a decrease in the number of lymphocytes with age?
- A. Decreased resistance to infection
- B. Cognitive problems
- C. Urinary incontinence
- D. Decrease in various blood components
Correct Answer: A
Rationale: The correct answer is A: Decreased resistance to infection. Lymphocytes are a crucial part of the immune system, responsible for fighting off infections. A decrease in the number of lymphocytes with age leads to a weakened immune response, making individuals more susceptible to infections.
- Choice B: Cognitive problems, is not directly related to lymphocyte levels.
- Choice C: Urinary incontinence, is not a typical effect of decreased lymphocytes.
- Choice D: Decrease in various blood components, is too broad and not specific to the role of lymphocytes in immunity.
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A brain abscess is a collection of pus within the substance of the brain and is caused by:
- A. Direct invasion of the brain
- B. Spread of infection by other organs
- C. Spread infection from nearby sites
- D. All of the above mechanisms
Correct Answer: D
Rationale: The correct answer is D because a brain abscess can be caused by direct invasion of the brain, spread of infection by other organs, and spread of infection from nearby sites. Direct invasion can occur from trauma or surgery, while infections from other organs like the lungs or heart can travel through the bloodstream to the brain. Infections from nearby sites such as the sinuses or ears can also spread to the brain. Therefore, all of these mechanisms can lead to the formation of a brain abscess. Choices A, B, and C alone do not encompass all the possible causes of a brain abscess, making D the correct comprehensive answer.
A client with suspected lung cancer is scheduled for thoracentesis as part of the diagnostic workup. The nurse reviews the client’s history for conditions that might contraindicate this procedure. Which condition is a contraindication for thoracentesis?
- A. A seizure disorder
- B. Anemia
- C. Chronic obstructive pulmonary disease
- D. A bleeding disorder
Correct Answer: D
Rationale: The correct answer is D: A bleeding disorder. Thoracentesis involves inserting a needle into the pleural space to remove fluid. A bleeding disorder increases the risk of excessive bleeding during the procedure. This can lead to complications such as hematoma formation, pneumothorax, or even life-threatening bleeding. It is crucial to assess and address bleeding disorders before performing thoracentesis to ensure the safety of the client.
A: A seizure disorder is not a contraindication for thoracentesis unless uncontrolled seizures could compromise the safety of the procedure.
B: Anemia alone is not a contraindication for thoracentesis, as it does not directly increase the risk of complications during the procedure.
C: Chronic obstructive pulmonary disease is not a contraindication for thoracentesis unless it is severe and compromises the client's ability to tolerate the procedure.
A client asks the nurse about the four-point gait when partial weight bearing is permitted. What is the nurse’s BEST response?
- A. move the right crutch ahead, then follow with the left foot
- B. move both crutches forward together, then swing legs through
- C. move the left crutch and the right foot forward together
- D. move both crutches and the weaker leg forward at the same time
Correct Answer: A
Rationale: The correct answer is A because in the four-point gait with partial weight bearing, the client should move the right crutch ahead first to provide support and stability, followed by the left foot. This sequence ensures proper weight distribution and balance. Moving both crutches together (B) may compromise stability. Moving the left crutch and right foot together (C) may cause uneven weight distribution. Moving both crutches and weaker leg together (D) may not provide adequate support for the weaker leg.
The multilumen pulmonary artery catheter allows the nurse to measure hemodynamic pressures at different points in the heart. When the tip enters the small branches of the pulmonary artery, the nurse can assess all of the following except:
- A. Central venous pressure (CVP)
- B. Pulmonary artery capillary pressure (PACP)
- C. Pulmonary artery obstructive pressure (PACP)
- D. Pulmonary artery wedge pressure (PAWP)
Correct Answer: C
Rationale: The correct answer is C: Pulmonary artery obstructive pressure (PACP). The multilumen pulmonary artery catheter measures hemodynamic pressures in the heart. When the catheter tip enters small branches of the pulmonary artery, it can assess Central Venous Pressure (A), Pulmonary Artery Capillary Pressure (B), and Pulmonary Artery Wedge Pressure (D). Pulmonary artery obstructive pressure is not a standard hemodynamic measurement and is not assessed using this catheter. It is crucial to differentiate between the various pressures measured to accurately assess the patient's cardiac status.
Mr. Chua has developed liver cirrhosis. Nurse Bea expects alteration in which laboratory values?
- A. carbon dioxide level
- B. prothrombin time
- C. gastric pH
- D. white blood cell count
Correct Answer: B
Rationale: The correct answer is B: prothrombin time. In liver cirrhosis, the liver's ability to produce clotting factors is impaired, leading to prolonged prothrombin time. This indicates an increased risk of bleeding. Choice A is incorrect as carbon dioxide levels are not typically affected by liver cirrhosis. Choice C, gastric pH, is unrelated to liver function. Choice D, white blood cell count, is not directly affected by liver cirrhosis. Therefore, the alteration in prothrombin time is the most relevant laboratory value to monitor in this case.