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In calculating the glomerular filtration rate (GFR) results for women, the creatinine clearance is usually:
- A. the same as for men.
- B. greater than that for men.
- C. multiplied by 0.85.
- D. multiplied by 1.15.
Correct Answer: A
Rationale: The correct answer is A: the same as for men. GFR is calculated based on factors like age, weight, and serum creatinine levels, which are not directly influenced by gender. Therefore, the creatinine clearance for women is the same as for men. Choices B, C, and D are incorrect because there is no inherent biological difference between men and women that would cause a difference in creatinine clearance for GFR calculation.
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A normal glomerular filtration rate is
- A. less than 80 mL/min.
- B. 80 to 125 mL/min.
- C. 125 to 180 mL/min.
- D. more than 189 mL/min.
Correct Answer: B
Rationale: The correct answer is B (80 to 125 mL/min) because this range represents the normal glomerular filtration rate (GFR) for a healthy adult. GFR indicates the rate at which blood is filtered by the kidneys, with 125 mL/min being the average value. Values below 80 mL/min (Choice A) suggest impaired kidney function, while values above 189 mL/min (Choice D) may indicate hyperfiltration or underlying conditions. Choice C (125 to 180 mL/min) falls within the normal range, but the typical average is around 125 mL/min. Thus, choice B is the correct answer as it reflects the standard GFR range for adults.
A patient is admitted to the oncology unit with a small-cell lung carcinoma. During the admission, the patient is noted to have a significant decrease in urine output accompanied by shortness of breath, edema, and mental status changes. The nurse is aware that this clinical presentation is consistent with
- A. adrenal crisis.
- B. diabetes insipidus.
- C. myxedema coma.
- D. syndrome of inappropriate secretion of antidiuretic hormone (SIADH).
Correct Answer: D
Rationale: The correct answer is D: syndrome of inappropriate secretion of antidiuretic hormone (SIADH). In this scenario, the patient's symptoms of decreased urine output, shortness of breath, edema, and mental status changes are indicative of fluid overload due to SIADH. SIADH causes excessive release of antidiuretic hormone (ADH), leading to water retention and dilutional hyponatremia. This results in edema, decreased urine output, and neurological symptoms.
A: Adrenal crisis presents with hypotension, shock, and electrolyte abnormalities, not consistent with the patient's symptoms.
B: Diabetes insipidus would present with excessive urine output and thirst, opposite of the patient's symptoms.
C: Myxedema coma results from severe hypothyroidism and presents with hypothermia, bradycardia, and altered mental status, not consistent with the patient's symptoms.
In summary, the patient's clinical presentation aligns
The nurse is caring for a patient who has undergone major abdominal surgery. The nurse notices that the patient’s urine output has been less than 20 mL/hour for the past 2 hours. The patient’s blood pressure is 100/60 mm Hg, and the pulse is 110 beats/min. Previously, the pulse was 90 beats/min with a blood pressure of 120/80 mm Hg. The nurse should
- A. contact the provider and expect a prescription for a normal saline bolus.
- B. wait until the provider makes rounds to report the assessment findings.
- C. continue to evaluate urine output for 2 more hours.
- D. ignore the urine output, as this is most likely postrenal in origin.
Correct Answer: A
Rationale: Rationale:
1. Urine output < 20 mL/hour indicates potential hypoperfusion.
2. Decreased urine output with hypotension and tachycardia suggests inadequate fluid resuscitation.
3. Administering a normal saline bolus can help improve perfusion and stabilize blood pressure.
4. Contacting the provider promptly for orders is crucial in managing this acute situation.
Summary of Incorrect Choices:
B. Delaying reporting to the provider risks worsening the patient's condition.
C. Continuing to evaluate urine output without intervention can lead to further deterioration.
D. Ignoring the urine output due to potential postrenal causes overlooks the urgent need for fluid resuscitation.
The nurse is caring for an elderly patient who was admitted with renal insufficiency. An expected laboratory finding for this patient may be
- A. an increased glomerular filtration rate (GFR).
- B. a normal serum creatinine level.
- C. increased ability to excrete drugs.
- D. hypokalemia.
Correct Answer: C
Rationale: Correct Answer: C - Increased ability to excrete drugs.
Rationale:
1. Renal insufficiency impairs kidney function, leading to decreased excretion of drugs.
2. In elderly patients with renal insufficiency, there may be compensatory mechanisms to enhance drug excretion.
3. This increased ability to excrete drugs helps prevent drug accumulation and potential toxicity.
Summary:
A: Increased GFR is not expected in renal insufficiency; it typically decreases.
B: Serum creatinine level would likely be elevated in renal insufficiency, not normal.
D: Hypokalemia is not a typical lab finding in renal insufficiency; hyperkalemia is more common.
The most common reasons for initiating dialysis in acute kidney injury include which of the following? (Select all that apply.)
- A. Acidosis
- B. Hypokalemia
- C. Volume overload
- D. Hyperkalemia
Correct Answer: A
Rationale: Explanation:
A: Acidosis is a common reason to initiate dialysis in acute kidney injury due to impaired acid-base balance.
B: Hypokalemia is not a common reason for initiating dialysis in acute kidney injury.
C: Volume overload may require dialysis but is not as common as acidosis.
D: Hyperkalemia is a valid reason for dialysis but not as common as acidosis in acute kidney injury.