Nokea
A child weighing 30 kg arrives at the clinic with diffuse itching as the result of an allergic reaction to an insect bite. Diphenhydramine (Benadryl) 25 mg 3 times a day is prescribed. The correct pediatric dose is 5 mg/kg/day. Which of the following best describes the prescribed drug dose?
- A. It is the correct dose
- B. The dose is too low
- C. The dose is too high
- D. The dose should be increased or decreased, depending on the symptoms
Correct Answer: B
Rationale: The correct pediatric dose of diphenhydramine is 5 mg/kg/day. This child weighs 30 kg, so the calculated dose would be 5 mg/kg x 30 kg = 150 mg/day. Since the prescription is for 25 mg 3 times a day, the total daily dose is 25 mg x 3 = 75 mg/day, which is lower than the calculated dose of 150 mg/day. Therefore, the prescribed dose of 25 mg 3 times a day is too low for this child. The dose should be adjusted to meet the correct dosage of 150 mg/day, which would be 50 mg 3 times a day. It is important not to titrate the dosage based on symptoms without consulting a physician, as this can lead to inappropriate medication administration.
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A healthcare provider is assessing vital signs in pediatric patients. Which of the following vital signs is abnormal?
- A. 11-year-old male: 90 BPM, 22 RPM, 100/70 mmHg
- B. 13-year-old female: 105 BPM, 22 RPM, 105/50 mmHg
- C. 5-year-old male: 102 BPM, 24 RPM, 90/65 mmHg
- D. 6-year-old female: 100 BPM, 26 RPM, 90/70 mmHg
Correct Answer: B
Rationale: The normal range of vital signs for pediatric patients varies with age. For 11 to 14-year-olds, the normal vital sign ranges are: Heart rate: 60-105 BPM; Respiratory rate: 12-20 RPM; Blood pressure: Systolic 85-120 mmHg, Diastolic 55-80 mmHg. The 13-year-old female in choice B has a diastolic blood pressure below the normal range, indicating hypotension. Additionally, her heart rate is at the upper limit of normal, and her respiratory rate is within normal limits. Choices A, C, and D all fall within the normal ranges for vital signs in pediatric patients.
A patient is admitted to the hospital with a diagnosis of primary hyperparathyroidism. A nurse checking the patient's lab results would expect which of the following changes in laboratory findings?
- A. Elevated serum calcium
- B. Low serum parathyroid hormone (PTH)
- C. Elevated serum vitamin D
- D. Low urine calcium
Correct Answer: A
Rationale: In primary hyperparathyroidism, there is excess secretion of parathyroid hormone (PTH) leading to increased resorption of calcium from bones and decreased excretion of calcium by the kidneys. This results in elevated serum calcium levels. Elevated serum calcium is a hallmark characteristic of primary hyperparathyroidism, making it the correct answer. Low serum parathyroid hormone (PTH) (Choice B) is incorrect because primary hyperparathyroidism is associated with elevated PTH levels due to the malfunction of the parathyroid glands. Elevated serum vitamin D (Choice C) is incorrect because primary hyperparathyroidism is not typically associated with elevated vitamin D levels. Low urine calcium (Choice D) is incorrect as primary hyperparathyroidism leads to decreased calcium excretion by the kidneys, resulting in high levels of calcium in the urine.
Which of the following conditions most commonly causes acute glomerulonephritis?
- A. A congenital condition leading to renal dysfunction.
- B. Prior infection with group A Streptococcus within the past 10-14 days.
- C. Viral infection of the glomeruli.
- D. Nephrotic syndrome.
Correct Answer: B
Rationale: Acute glomerulonephritis is most commonly caused by the immune response to a prior
upper respiratory infection with group A Streptococcus. Glomerular inflammation occurs
about 10-14 days after the infection, resulting in scant, dark urine and retention of body
fluid. Periorbital edema and hypertension are common signs at diagnosis.
During your evaluation of a 14-year-old girl with a BMI of 18, she reports inability to eat, induced vomiting, and severe constipation. Which of the following would you most likely suspect?
- A. Multiple sclerosis
- B. Anorexia nervosa
- C. Bulimia nervosa
- D. Systemic sclerosis
Correct Answer: B
Rationale: The clinical presentation described in the question is highly suggestive of anorexia nervosa. Anorexia nervosa is characterized by self-imposed starvation due to a distorted body image and an intense fear of gaining weight, even when the individual is underweight. The patient's symptoms of inability to eat, induced vomiting, and severe constipation align with the behavior seen in anorexia nervosa, including restrictive eating patterns and purging behaviors. Multiple sclerosis (Choice A) is a neurological disorder, not associated with the described symptoms. Bulimia nervosa (Choice C) typically involves binge eating followed by purging behaviors, which is different from the described primary restriction seen in anorexia nervosa. Systemic sclerosis (Choice D) is a connective tissue disorder and is not related to the symptoms of self-induced vomiting and severe constipation reported in this case.
A fragile 87-year-old female has recently been admitted to the hospital with increased confusion and falls over the last two weeks. She is also noted to have a mild left hemiparesis. Which of the following tests is most likely to be performed?
- A. CBC (Complete Blood Count)
- B. ECG (Electrocardiogram)
- C. Thyroid Function Tests
- D. CT Scan
Correct Answer: D
Rationale: A CT scan is most likely to be performed in this scenario. A CT scan would be done to further investigate the cause of the left hemiparesis. Noncontrast CT scanning is commonly used in the acute evaluation of patients with suspected acute stroke to assess for ischemic changes or hemorrhage in the brain. While a CBC may provide information on blood cell counts and general health status, it is not the primary test for evaluating hemiparesis. An ECG is used to assess heart function and rhythm, which is not the main concern in this case. Thyroid function tests evaluate thyroid hormone levels and are not typically the initial tests for evaluating hemiparesis and confusion.