A nurse is teaching the parents of a child who is to start using a metered-dose inhaler (MDI) to treat asthma. Which of the following information should the nurse include in the teaching?
"The spacer increases the amount of medication delivered to the oropharynx."
"The spacer increases the amount of medication delivered to the lungs."
"Inhale rapidly using the spacer with the MDI."
"Cover exhalation slots of the spacer with lips when inhaling."
The Correct Answer is B
A. This statement is incorrect; the spacer does not primarily increase medication delivery to the oropharynx.
B. The spacer helps to increase the amount of medication that reaches the lungs by allowing larger particles to settle out and preventing them from being deposited in the mouth and throat.
C. Inhaling slowly and deeply is recommended for effective medication delivery when using an MDI with a spacer.
D. Covering the exhalation slots would prevent proper airflow and could cause the child to inhale exhaled air, which is not recommended during inhalation.
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Correct Answer is A
Explanation
A. Distributive shock, particularly in the context of anaphylaxis, is characterized by widespread vasodilation that leads to a decrease in systemic vascular resistance and impaired blood flow to organs despite normal or increased cardiac output.
B. This option is incorrect because distributive shock involves decreased systemic vascular resistance due to vasodilation rather than an increase.
C. This statement describes hypovolemic shock, not distributive shock. Distributive shock is not primarily caused by the loss of blood volume.
D. While loss of myocardial contractility can lead to cardiogenic shock, it is not the mechanism behind distributive shock, which is related to vascular tone rather than heart function.
Correct Answer is A
Explanation
A. Giving pancreatic enzymes before snacks and meals is essential for children with cystic fibrosis to help with digestion and nutrient absorption due to their pancreatic insufficiency.
B. Children with CF often require increased salt intake, especially during hot weather or heavy exercise, due to higher salt losses in sweat.
C. A child with CF typically needs a high-calorie, high-fat diet to meet their energy requirements and to support growth, rather than low-fat meals with limited protein.
D. Limiting fluid intake is not recommended; children with CF often need to stay well-hydrated to help manage thick secretions and promote overall health.