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The central venous oxygen saturation (ScvO2) is decreasing in a patient who has severe pancreatitis. To determine the possible cause of the decreased ScvO2, the nurse assesses the patient’s:
- A. Lipase.
- B. Temperature.
- C. Urinary output.
- D. Body mass index.
Correct Answer: B
Rationale: The correct answer is B: Temperature. Decreased ScvO2 in severe pancreatitis can be due to systemic inflammatory response leading to increased metabolic demand and decreased tissue oxygen delivery. Monitoring temperature helps assess for presence of infection or sepsis, which can further decrease tissue oxygenation. Lipase (A) is specific for pancreatitis diagnosis, not directly related to ScvO2. Urinary output (C) is important for assessing renal function, not directly related to ScvO2. Body mass index (D) does not provide information on tissue oxygenation status in this context.
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represent?
- A. Alveolar oxygen tension.
- B. Oxygen that is chemically combined with hemoglobin .
- C. Oxygen that is physically dissolved in plasma.
- D. Total oxygen consumption.
Correct Answer: B
Rationale: The correct answer is B: Oxygen that is chemically combined with hemoglobin. This is because oxygen primarily travels in the blood by binding to hemoglobin in red blood cells, forming oxyhemoglobin. This process allows for efficient transport of oxygen to tissues throughout the body. Choices A, C, and D are incorrect because:
A: Alveolar oxygen tension refers to the partial pressure of oxygen in the alveoli of the lungs, not the specific form of oxygen in the blood.
C: Oxygen physically dissolved in plasma refers to the small amount of oxygen that is not bound to hemoglobin and is less significant in oxygen transport compared to oxygen bound to hemoglobin.
D: Total oxygen consumption is the overall amount of oxygen utilized by the body, not specifically the form of oxygen bound to hemoglobin for transport.
What should a designated healthcare surrogate base healthcare decisions on?
- A. Personal beliefs and values
- B. Recommendations of family members and friends
- C. Recommendations of the physician and healthcare team
- D. Wishes previously expressed by the patient
Correct Answer: C
Rationale: The correct answer is C because the healthcare surrogate should base decisions on recommendations of the physician and healthcare team who have the expertise to provide medical advice. They are best positioned to understand the patient's condition and treatment options. Personal beliefs (A) may not align with medical best practices. Family and friends' recommendations (B) may not be informed by medical knowledge. Wishes previously expressed by the patient (D) are important but may need to be interpreted in the context of the current medical situation, which healthcare professionals can provide.
A critically ill patient experiences stress and anxiety from many factors. Treatment of the patient focuses on reducing stressors and providing supportive care such as nutrition, oxygenation, pain management, control of anxiety, and specific care of the illness or injury. What is the best rationale for these interventions?
- A. Helps to support the patients immune system
- B. Part of good nursing care
- C. Mandated by hospital policy
- D. Reassures the patient and family
Correct Answer: A
Rationale: The correct answer is A: Helps to support the patient's immune system. Providing supportive care such as nutrition, oxygenation, pain management, and anxiety control can help reduce stress, which in turn supports the immune system. Stress weakens the immune system, making the patient more vulnerable to infections and complications. By addressing stress and anxiety through supportive care, the patient's immune system is better able to function optimally, aiding in the recovery process.
Choices B, C, and D are incorrect because:
B: Part of good nursing care - While supportive care is indeed part of good nursing care, the key rationale for these interventions in a critically ill patient is to support the immune system, not just to provide good nursing care.
C: Mandated by hospital policy - Hospital policies may dictate certain aspects of care, but the primary goal of these interventions is to support the patient's immune system, not just to comply with hospital policies.
D: Reassures the patient and family - While providing reass
A patient who has been diagnosed with inoperable lung cancer and has a poor prognosis plans a trip across the country to settle some issues with their siblings. The nurse recognizes that the patient is manifesting which psychosocial response to death?
- A. Restlessness.
- B. Yearning and protest.
- C. Anxiety about unfinished business.
- D. Fear of the meaninglessness of one’s life.
Correct Answer: C
Rationale: The correct answer is C: Anxiety about unfinished business. The patient's desire to settle issues with their siblings before death indicates a concern about unresolved matters. This response aligns with the concept of psychosocial responses to death, specifically the need for closure and resolution. Restlessness (choice A) may not necessarily indicate a specific focus on unfinished business. Yearning and protest (choice B) typically refer to the initial stages of grief, not specifically related to settling unresolved issues. Fear of the meaninglessness of one's life (choice D) is more existential and philosophical, whereas the patient's focus here is on addressing specific issues with their siblings.
The patient is admitted with complaints of general malaise and fatigue, along with a decreased urinary output. The patient’s urinalysis shows coarse, muddy brown granular casts and hematuria. The nurse determines that the patient has:
- A. acute kidney injury from a prerenal condition.
- B. acute kidney injury from postrenal obstruction.
- C. intrarenal disease, probably acute tubular necrosis.
- D. a urinary tract infection.
Correct Answer: C
Rationale: The correct answer is C: intrarenal disease, probably acute tubular necrosis. The patient's symptoms of general malaise, fatigue, decreased urinary output, along with the presence of coarse, muddy brown granular casts and hematuria in the urinalysis indicate kidney damage. Acute tubular necrosis is a common cause of acute kidney injury characterized by damage to the renal tubules, leading to impaired kidney function. The presence of granular casts and hematuria suggests tubular injury and bleeding within the kidney. Choices A and B are incorrect as they refer to prerenal and postrenal causes of kidney injury, respectively, which do not align with the patient's symptoms and urinalysis findings. Choice D is incorrect as a urinary tract infection would typically present with different symptoms and urinalysis findings.