Physician orders Cardizem to infuse at 10 mg/hr. Available is Cardizem 125 mg in 100 ml D5W. What is the rate in ml/hr?

Answer and Explanation

The Correct Answer is A

A. To calculate the infusion rate: 125 mg in 100 ml = 1.25 mg/ml. Required: 10 mg/hr ÷ 1.25 mg/ml = 8 ml/hr.

B. To calculate the infusion rate: 125 mg in 100 ml = 1.25 mg/ml. Required: 10 mg/hr ÷ 1.25 mg/ml = 8 ml/hr.

C. To calculate the infusion rate: 125 mg in 100 ml = 1.25 mg/ml. Required: 10 mg/hr ÷ 1.25 mg/ml = 8 ml/hr.

D. To calculate the infusion rate: 125 mg in 100 ml = 1.25 mg/ml. Required: 10 mg/hr ÷ 1.25 mg/ml = 8 ml/hr.

Nursing Test Bank

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Correct Answer is A

Explanation

A. Atrial fibrillation (AF) is more common in older adults, particularly those with underlying conditions like chronic obstructive pulmonary disease (COPD). COPD can lead to structural changes in the heart, increasing the risk of AF. The elderly are particularly vulnerable due to age-related heart changes and comorbidities such as lung disease.

B. While carotid endarterectomy is a surgical procedure that can be related to stroke prevention, it is not directly associated with a higher risk of AF compared to COPD.

C. Aspirin is used for its antiplatelet effects, not directly related to the risk of AF.

D. Post coronary artery bypass graft (CABG) surgery increases the risk for arrhythmias, but it is less directly linked to AF than conditions like COPD in an older adult.

A. The lumps are smaller and less painful after starting oral contraceptives. B. The lumps get more painful before the clients menstrual period. C. Firm and moveable lumps are in the upper outer breast quadrants. D. An area on the breast is hot, pink, and tender to the touch.

Correct Answer is D

Explanation

A. A reduction in lump size and pain with oral contraceptives is expected and does not indicate a need to change the treatment plan.

B. Increased lump pain before menstruation is typical for fibrocystic changes and not a cause for concern.

C. Firm, movable lumps in the upper outer breast quadrants are characteristic of fibrocystic changes and do not suggest an alternative condition.

D. An area that is hot, pink, and tender indicates inflammation or possible infection (e.g., mastitis or abscess), requiring further evaluation and potentially altering the treatment plan.

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Test Name	Results	Reference Range
WBC	12, 000	4, 000- 11, 000
Na+	149 mEq/L	135-145 mEq/L
K+	5.0 mEq/L	3.5- 5.0 mEq/L
Cl-	110 mEq/L	96-106 mEq/L
pH	7.34	7.35-7.45
PaCO2	34 mmHg	35- 45 mmHg
PaO2	78 mm Hg	80-100 mmHg
HCO3	21 mEq/L	22- 26 mEq/L

Physician orders Cardizem to infuse at 10 mg/hr. Available is Cardizem 125 mg in 100 ml D5W. What is the rate in ml/hr?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is assessing clients on a medical-surgical unit. Which client would the nurse identify as being at greatest risk for atrial fibrillation?

Correct Answer is A

Explanation

A 36-yr-old client who has a diagnosis of fibrocystic breast changes calls the nurse in the clinic reporting symptoms. Which information is likely to change the treatment plan?

Correct Answer is D

Explanation

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