Nokea
Daily weights are being recorded for the patient with a urine output that has been less than the intravenous and oral intake. The weight yesterday was 5 kg. This morning it is 99 kg. The nurse understands that this corresponds to a(n)
- A. fluid retention of 1.5 liters.
- B. fluid loss of 1.5 liters.
- C. equal intake and output due to insensible losses.
- D. fluid loss of 0.5 liters.
Correct Answer: A
Rationale: The correct answer is A: fluid retention of 1.5 liters. The weight gain from 5 kg to 99 kg indicates an increase of 94 kg. Since 1 kg of weight gain is approximately equal to 1 liter of fluid retention, the patient has retained 94 liters of fluid. Therefore, the correct choice is fluid retention of 1.5 liters.
Choice B is incorrect because the weight gain indicates fluid retention, not loss. Choice C is incorrect as it mentions equal intake and output, which does not match the weight gain observed. Choice D is incorrect as it suggests fluid loss, which contradicts the weight gain.
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The critical care nurse knows that in critically ill patients, renal dysfunction
- A. is a very rare problem.
- B. affects nearly two thirds of patients.
- C. has a low mortality rate once renal replacement therapy has been initiated.
- D. has little effect on morbidity, mortality, or quality of life.
Correct Answer: B
Rationale: The correct answer is B because renal dysfunction is a common issue in critically ill patients due to factors like sepsis or hypoperfusion. This affects nearly two thirds of patients, leading to potential complications. Choice A is incorrect as renal dysfunction is common, not rare. Choice C is incorrect as mortality rates can still be high even with renal replacement therapy. Choice D is incorrect as renal dysfunction can significantly impact morbidity, mortality, and quality of life in critically ill patients.
Which of the following laboratory values would be found in a patient with syndrome of inappropriate secretion of antidiuretic hormone?
- A. Fasting blood glucose 156 mg/dL
- B. Serum potassium 5.8 mEq/L
- C. Serum sodium 115 mEq/L
- D. Serum sodium 152 mEq/L
Correct Answer: C
Rationale: The correct answer is C, Serum sodium 115 mEq/L. In syndrome of inappropriate secretion of antidiuretic hormone (SIADH), there is excess release of ADH leading to water retention and dilutional hyponatremia. Low serum sodium levels (hyponatremia) are characteristic of SIADH due to water retention without proportional sodium retention. Choices A and B are not indicative of SIADH. Choice D, high serum sodium, is more likely in conditions causing dehydration or excessive sodium intake.
The patient is on intake and output (I&O), as well as daily weights. The nurse notes that output is considerably less than intake over the last shift, and daily weight is 1 kg more than yesterday. The nurse should
- A. draw a trough level after the next dose of antibiotic.
- B. obtain an order to place the patient on fluid restriction.
- C. assess the patient’s lungs.
- D. insert an indwelling catheter.
Correct Answer: C
Rationale: The correct answer is C: assess the patient's lungs. The discrepancy between intake, output, and weight gain indicates a potential fluid imbalance. By assessing the patient's lungs, the nurse can identify signs of fluid overload, such as crackles or difficulty breathing, which could explain the weight gain and imbalance. This step is crucial in determining the underlying cause and guiding further interventions. Drawing a trough level (A) or inserting an indwelling catheter (D) are not necessary at this point and may not address the immediate issue. Placing the patient on fluid restriction (B) should only be considered after a thorough assessment to determine the cause of the imbalance.
A normal urine output is considered to be
- A. 80 to 125 mL/min.
- B. 180 L/day.
- C. 80 mL/min.
- D. 1 to 2 L/day.
Correct Answer: D
Rationale: The correct answer is D: 1 to 2 L/day. Normal urine output typically ranges from 1 to 2 liters per day, which is considered adequate for maintaining proper hydration and eliminating waste products. A: 80 to 125 mL/min is too low for daily output. B: 180 L/day is excessively high and unrealistic. C: 80 mL/min is also too low for daily urine output. Therefore, D is the most appropriate choice based on standard guidelines for urine excretion.
The patient is in a progressive care unit following arteriovenous fistula implantation in his left upper arm, and is due to have blood drawn with his next set of vital signs and assessment. When the nurse assesses the patient, the nurse should
- A. draw blood from the left arm.
- B. take blood pressures from the left arm.
- C. start a new intravenous line in the left lower arm.
- D. auscultate the left arm for a bruit and palpate for a thrill.
Correct Answer: D
Rationale: The correct answer is D. Auscultating the left arm for a bruit and palpating for a thrill post arteriovenous fistula implantation is crucial to assess the patency and functionality of the fistula. A bruit indicates turbulent blood flow, while a thrill signifies the presence of a strong pulse through the fistula. These assessments help identify any complications like stenosis or thrombosis. Drawing blood or taking blood pressures from the arm with the fistula can lead to inaccurate results or damage the fistula. Starting a new IV line in the left lower arm is unnecessary and not relevant to monitoring the arteriovenous fistula.