In reviewing a plan of care for a patient exhibiting the symptoms of anaphylaxis, which of the following medications would be avoided?

Antihistamines

Vasodilators

Corticosteroids

Bronchodilators

Answer and Explanation

The Correct Answer is B

A) Antihistamines:
Antihistamines are commonly used in the treatment of allergic reactions, including anaphylaxis. They work by blocking the effects of histamine, which is released during an allergic reaction, and can help alleviate symptoms such as itching, hives, and nasal congestion. Antihistamines are typically included in the treatment regimen for anaphylaxis but should not be relied upon as the sole treatment.

B) Vasodilators.
Vasodilators are medications that widen blood vessels, leading to a decrease in blood pressure. In the context of anaphylaxis, where blood pressure can drop precipitously due to systemic vasodilation, the use of vasodilators can exacerbate hypotension, potentially worsening the patient's condition. Therefore, vasodilators should be avoided in the management of anaphylaxis.

C) Corticosteroids:
Corticosteroids, such as prednisone or methylprednisolone, are used in the management of anaphylaxis to reduce inflammation and prevent late-phase allergic reactions. They are not typically used as first-line treatment during the acute phase of anaphylaxis but may be administered after initial stabilization to prevent recurrence of symptoms.

D) Bronchodilators:
Bronchodilators, such as albuterol, are used to relieve bronchospasm and improve airflow in conditions such as asthma and chronic obstructive pulmonary disease (COPD). While bronchospasm can occur during anaphylaxis, bronchodilators may still be used to address this symptom. However, they should be used cautiously, and their administration should not delay the administration of epinephrine, which is the primary treatment for anaphylaxis.

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Correct Answer is B

Explanation

A) Chronic diarrhea:
Overuse of laxatives is more likely to lead to chronic constipation rather than chronic diarrhea. Laxatives are typically used to treat constipation by promoting bowel movements, but overuse can disrupt normal bowel function and result in long-term constipation.

B) Chronic constipation.
Overuse of laxatives can lead to dependence on laxatives for bowel movements and can cause the smooth muscle in the colon to become less responsive to normal stimuli, resulting in decreased muscle tone. This can eventually lead to chronic constipation, where the colon becomes less effective at moving stool through the digestive tract, resulting in infrequent or difficult bowel movements.

C) Frequent vomiting:
Overuse of laxatives does not typically lead to frequent vomiting. Vomiting is more commonly associated with conditions affecting the upper gastrointestinal tract, such as gastroenteritis, gastritis, or other gastrointestinal disorders.

D) Chronic nausea:
Overuse of laxatives may cause gastrointestinal discomfort or upset stomach, but it is not typically associated with chronic nausea. Chronic nausea may be caused by various factors such as gastrointestinal disorders, medications, or other underlying medical conditions unrelated to laxative use.

A. Lowered heart rate B. Decreased conduction through the AV node C. Increased urine output D. Vasoconstriction of renal blood vessels

Correct Answer is C

Explanation

A) Lowered heart rate:
Dopamine typically increases heart rate as it acts on beta-adrenergic receptors in the heart, leading to increased cardiac contractility and chronotropy. However, at low doses, the effect on heart rate may be minimal compared to higher doses.

B) Decreased conduction through the AV node:
Dopamine may have minimal effects on conduction through the atrioventricular (AV) node, especially at low doses. It primarily acts on adrenergic receptors to increase cardiac contractility and heart rate.

C) Increased urine output.
Dopamine is a medication commonly used to treat shock by improving cardiac output and blood pressure. At low doses, dopamine primarily acts on dopamine receptors in the renal blood vessels, causing vasodilation and increased renal blood flow. This increased renal blood flow leads to increased glomerular filtration rate (GFR) and urine output. Therefore, increased urine output is an expected effect of dopamine infusion at low doses in the treatment of shock.

D) Vasoconstriction of renal blood vessels:
At low doses, dopamine primarily acts on dopamine receptors in the renal blood vessels, causing vasodilation and increased renal blood flow. Vasoconstriction of renal blood vessels is more commonly associated with higher doses of dopamine or with other vasopressor medications such as norepinephrine or phenylephrine.

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In reviewing a plan of care for a patient exhibiting the symptoms of anaphylaxis, which of the following medications would be avoided?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Patients should be advised not to overuse laxatives, because the smooth muscle in the colon can lose its tone. What condition should the nurse warn the client can occur if this happens?

Correct Answer is B

Explanation

A nurse is assisting in the care of a client who is receiving a dopamine infusion at a low dose for treatment of shock. Which of the following findings is an expected effect of this medication?

Correct Answer is C

Explanation

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Patients should be advised not to overuse laxatives, because the smooth muscle in the colon can lose its tone. What condition should the nurse warn, the client can occur if this happens?

A nurse is preparing to administer valproic acid 500 mg PO. Available is valproic acid oral solution 250 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)