A nurse is reviewing the medical record of a client who has a new prescription for verapamil. Which of the following findings in the client's medical record should the nurse identify as a contraindication for the administration of verapamil?
History of asthma
History of heart failure
Systolic BP 110 mm Hg
Blood creatinine 1.0 mg/dl
The Correct Answer is B
A. History of asthma: Verapamil is a calcium channel blocker and does not affect the airways or cause bronchospasm, unlike beta-blockers, which can exacerbate asthma.
B. History of heart failure: Verapamil has negative inotropic effects, meaning it decreases the strength of heart contractions. This can exacerbate heart failure, particularly in clients with reduced ejection fraction (systolic heart failure). It is generally contraindicated in clients with severe heart failure as it can worsen symptoms.
C. Systolic BP 110 mm Hg: While verapamil can cause a drop in blood pressure due to its vasodilatory effects, a systolic blood pressure of 110 mm Hg is not an absolute contraindication.
D. A blood creatinine level of 1.0 mg/dL is within the normal range (approximately 0.6–1.2 mg/dL for adults). Verapamil is not contraindicated in clients with normal renal function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Exenatide is a medication used to treat type 2 diabetes mellitus. The nurse should plan to administer exenatide via the subcutaneous route.
Subcutaneous administration involves injecting the medication into the fatty tissue just below the skin. Exenatide is available as a subcutaneous injection and is typically given in the abdomen, thigh, or upper arm.
Let's go through the other options:
A. Oral: Exenatide is not available in an oral form. It is a peptide-based medication that would be destroyed by stomach acid and digestive enzymes if taken orally. Therefore, it must be administered via injection to be effective.
B. Intramuscular: Exenatide is not administered intramuscularly. Intramuscular injections are given deep into the muscle tissue, and exenatide is not formulated or intended for this route of administration.
D. Intravenous: Exenatide is not administered intravenously. Intravenous injections are given directly into the bloodstream, and exenatide is not suitable for this route of administration.
Correct Answer is ["0.12"]
Explanation
To calculate the rate at which the IV pump should be set to deliver dopamine, we need to determine the total amount of dopamine in the infusion and divide it by the desired dose per minute.
Given:
Dopamine concentration: 400 mg in 250 mL
Desired dose: 5 mcg/kg/min
Patient weight: 220 lb
First, we need to convert the patient's weight from pounds to kilograms:
220 lb ÷ 2.2 = 100 kg
Next, we need to calculate the total amount of dopamine needed per minute:
5 mcg/kg/min × 100 kg = 500 mcg/min
Now, we need to convert the dopamine dose from mcg to mg:
500 mcg/min ÷ 1000 = 0.5 mg/min
To determine the infusion rate in mL/hr, we divide the dose in mg/min by the dopamine concentration in the infusion solution:
0.5 mg/min ÷ 250 mL = 0.002 mL/min
Finally, we convert the infusion rate from mL/min to mL/hr by multiplying by 60:
0.002 mL/min × 60 min = 0.12 mL/hr
Therefore, the nurse should set the IV pump to deliver 0.12 mL/hr.
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