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. A patient with stage I nonsmall cell lung cancer expresses a preference for chemotherapy over surgery. Which response by the nurse is most appropriate?

Correct answer: D

Rationale: The most appropriate response by the nurse in this situation is to gather more information about the patient's concerns and preferences. By asking the patient to share their understanding of the available treatments, the nurse encourages open communication and gains insight into the patient's knowledge and preferences. Option A focuses solely on pain, which may not be the patient's primary concern. Option B assumes negative experiences without exploring the patient's current thoughts. Option C, stating that surgery is the recommended treatment, dismisses the patient's preference and does not address their concerns. Chemotherapy is not the primary treatment for nonsmall cell lung cancer; it may be used for nonresectable tumors or as adjuvant therapy to surgery, making it crucial for the nurse to explore the patient's treatment preferences and understanding.

3. The nurse is counting a client's respiratory rate. During a 30-second interval, the nurse counts six respirations, and the client coughs three times. In repeating the count for a second 30-second interval, the nurse counts eight respirations. Which respiratory rate should the nurse document?

Correct answer: B

Rationale: The most accurate respiratory rate is the second count obtained by the nurse, which was not interrupted by coughing. The nurse counted eight respirations over 30 seconds, so doubling this count gives a respiratory rate of 16 breaths per minute. This calculation is based on the assumption that the client's breathing pattern remained relatively stable during the two 30-second intervals. Options A, C, and D are incorrect because they do not reflect the accurate count obtained without interruptions. Choice B (16) is the correct answer as it reflects the uninterrupted count of respirations by the nurse.

4. Parents of a 6-month-old breastfed baby ask the nurse about increasing the baby's diet. Which of the following should be added first?

Correct answer: A

Rationale: The correct answer is 'Cereal.' The guidelines of the American Academy of Pediatrics recommend introducing one new food at a time, starting with strained cereal. Cereal is often recommended as a first solid food for infants due to its soft texture and iron-fortified properties, which are important for the baby's development. Eggs and meat are common allergenic foods and are usually introduced later. Juice is not recommended for infants under 1 year old due to its high sugar content and lack of nutritional value compared to whole fruits.

5. What is the most appropriate suggestion regarding the diet for an 18-month-old child experiencing mild diarrhea and 'mushy' stools, but tolerating fluids and solid foods?

Correct answer: B

Rationale: For a child with mild diarrhea who is tolerating fluids and solid foods, the most appropriate diet suggestion would be to continue feeding a normal diet to prevent dehydration, reduce stool frequency and volume, and hasten recovery. Foods that are well tolerated during diarrhea include bland but nutritional options like complex carbohydrates (rice, wheat, potatoes, cereals), yogurt with live cultures, cooked vegetables, and lean meats. Mashed potatoes with baked chicken provide a balance of nutrients and are easy on the digestive system. Options A and C contain foods that may worsen diarrhea; applesauce and gelatin can be high in sugars which can exacerbate diarrhea, and cabbage may be hard to digest for some individuals. Option D of offering fluids only can affect the child's nutritional status by not providing enough essential nutrients during the recovery period.

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