Nokea
Which oxygen delivery system would provide the highest concentrations of oxygen to the client?
- A. Venturi mask
- B. Partial rebreather mask
- C. Non-rebreather mask
- D. Simple face mask
Correct Answer: C
Rationale: The correct answer is the non-rebreather mask. This oxygen delivery system has a one-way valve that prevents exhaled air from entering the reservoir bag and one or more valves covering the air holes on the face mask itself to prevent the inhalation of room air but allow exhalation of air. When a tight seal is achieved around the mask, up to 100% of oxygen is available.
Choice A, the Venturi mask, delivers precise oxygen concentrations but not as high as the non-rebreather mask. Choice B, the partial rebreather mask, allows the client to rebreathe some exhaled air, resulting in lower oxygen concentrations than the non-rebreather mask. Choice D, the simple face mask, delivers low to moderate oxygen concentrations and is not designed to provide the highest concentrations like the non-rebreather mask.
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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?
- A. 60 microdrops/minute
- B. 20 microdrops/minute
- C. 30 microdrops/minute
- D. 40 microdrops/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.
A mother brings her 26-month-old to the well-child clinic. She expresses frustration and anger due to her child's constant saying 'no' and refusal to follow her directions. The nurse explains this is normal for his age, as negativism is attempting to meet which developmental need?
- A. Trust
- B. Initiative
- C. Independence
- D. Self-esteem
Correct Answer: C
Rationale: In Erikson's theory of development, toddlers struggle to assert independence. They often use the word 'no' even when they mean yes. This stage is called autonomy versus shame and doubt. The child's behavior of saying 'no' and resisting directions reflects the developmental need for independence, not trust (option A), initiative (option B), or self-esteem (option D). Trust is typically associated with early infancy, initiative with preschool age, and self-esteem with later childhood and adolescence.
A couple asks the nurse about risks of several birth control methods. What is the most appropriate response by the nurse?
- A. Norplant is safe and can be easily removed.
- B. Oral contraceptives should not be used by smokers.
- C. Depo-Provera is convenient with few side effects.
- D. The IUD provides protection against pregnancy and infection.
Correct Answer: B
Rationale: The correct answer is that oral contraceptives should not be used by smokers. The use of oral contraceptives in a woman who smokes increases the risk of cardiovascular problems, such as thromboembolic disorders. This is due to the combined effect of smoking and hormonal contraceptives. Choices A, C, and D are incorrect because they do not address the specific risk associated with smoking and oral contraceptives. Norplant's safety and ease of removal, Depo-Provera's convenience with few side effects, and the IUD's protection against pregnancy and infection are important points but not directly related to the increased risks for smokers using oral contraceptives.
Which interventions should the nurse include when creating a care plan for a child with hepatitis? Select one that doesn't apply.
- A. Providing a low-fat, well-balanced diet.
- B. Teaching the child effective hand-washing techniques.
- C. Notifying the primary health care provider (PHCP) if jaundice is present.
- D. Instructing the parents to avoid administering medications unless prescribed.
Correct Answer: D
Rationale: The correct answer is instructing the parents to avoid administering medications unless prescribed. This choice is not directly related to the care of a child with hepatitis. It is essential for the nurse to educate the child and family about providing a low-fat, well-balanced diet to support the liver, teaching effective hand-washing techniques to prevent the spread of infection, and notifying the primary health care provider if jaundice is present to monitor the progression of the disease and adjust the treatment plan accordingly. Avoiding unnecessary medications is crucial, but it should be done under healthcare provider guidance, so the statement should be revised to reflect this aspect. Therefore, the other options are appropriate for the care of a child with hepatitis.
While eating in the hospital cafeteria, a nurse notices a toddler at a nearby table choking on a piece of food and appearing slightly blue. What is the appropriate initial action to take?
- A. Begin mouth-to-mouth resuscitation
- B. Give the child water to help with swallowing
- C. Perform 5 abdominal thrusts
- D. Call for the emergency response team
Correct Answer: C
Rationale: When a toddler is choking on a piece of food and appears blue, it indicates airway obstruction. The appropriate initial action should be to perform 5 abdominal thrusts. This technique can help dislodge the obstructing object and clear the airway. Initiating mouth-to-mouth resuscitation is not recommended as the first step in a choking emergency, especially in children. Giving water may not be effective and can worsen the situation by causing further blockage. Calling the emergency response team should be considered if the abdominal thrusts are unsuccessful in clearing the airway.