following mitral valve replacement surgery a client develops pvcs the health care provider orders a bolus of lidocaine followed by a continuous lidoc
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Nursing Elites

NCLEX-RN

NCLEX RN Practice Questions Exam Cram

1. Following mitral valve replacement surgery, a client develops PVCs. The healthcare provider orders a bolus of Lidocaine followed by a continuous Lidocaine infusion at a rate of 2 mg/minute. The IV solution contains 2 grams of Lidocaine in 500 mL of D5W. The infusion pump delivers 60 microdrops/mL. What rate would deliver 4 mg of Lidocaine per minute?

Correct answer: A

Rationale: To calculate the rate needed to deliver 4 mg/minute of Lidocaine, first, convert 2 grams to milligrams: 2 grams = 2000 mg. Then, set up a ratio between the total amount of Lidocaine (2000 mg) and the total volume of IV solution (500 mL): 2000 mg / 500 mL = 4 mg / x mL. Solving for x, x = 1 mL. Since the infusion pump delivers 60 microdrops per mL, multiplying by 60 microdrops/mL gives the correct rate of 60 microdrops/minute. This rate ensures the desired 4 mg of Lidocaine is delivered per minute. Choices B, C, and D are incorrect as they do not align with the accurate calculation based on the provided information.

2. In children suspected to have a diagnosis of diabetes, which one of the following complaints would be most likely to prompt parents to take their school-age child for evaluation?

Correct answer: C

Rationale: The correct answer is 'Bedwetting.' One of the initial symptoms of type 1 diabetes in children is bedwetting. Parents are likely to notice bedwetting in a school-age child, prompting them to seek evaluation. Polyphagia (excessive hunger) and weight loss are also common symptoms of diabetes but may not be as readily noticeable to parents compared to bedwetting. Dehydration is a consequence of diabetes rather than an early symptom that would prompt parents for evaluation.

3. A child is suspected of suffering from intussusception. The nurse should be alert to which clinical manifestation of this condition?

Correct answer: A

Rationale: Intussusception is an invagination of a section of the intestine into the distal bowel, and it is the most common cause of bowel obstruction in children aged 3 months to 6 years. A tender, distended abdomen is a typical clinical manifestation of intussusception. The presence of fecal incontinence is not a characteristic presentation of intussusception; it describes encopresis, which generally affects preschool and school-aged children but is not specific to intussusception. Incomplete development of the anus describes imperforate anus, a disorder diagnosed in the neonatal period, not intussusception. The infrequent and difficult passage of dry stools is characteristic of constipation, a common issue in children that can occur at any age, although it often peaks at 2 to 3 years old.

4. A patient has just been admitted with probable bacterial pneumonia and sepsis. Which order should the nurse implement first?

Correct answer: B

Rationale: In a patient with probable bacterial pneumonia and sepsis, the priority intervention is to obtain blood cultures from two sites before initiating antibiotic therapy. This is crucial to identify the causative organism and guide appropriate antibiotic treatment. Administering antibiotics without obtaining cultures first can interfere with accurate results. Performing a chest x-ray and administering acetaminophen can be done after obtaining blood cultures as they are important but not as urgent as identifying the causative organism in sepsis.

5. The nurse is preparing to care for a child with a diagnosis of intussusception. The nurse reviews the child's record and expects to note which sign of this disorder documented?

Correct answer: D

Rationale: Intussusception is a condition where a part of the bowel slides into the next section, causing an obstruction. The classic presentation includes severe abdominal pain that is crampy, intermittent, and may cause the child to draw knees to the chest. While vomiting can occur, it is not typically projectile in nature. A key hallmark of intussusception is the passage of bright red blood and mucus in the stools, often described as currant jelly-like. Watery diarrhea and ribbon-like stools are not typical signs of intussusception and should not be expected in a child with this condition.

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