A nurse is providing discharge teaching to a client who has peripheral arterial disease (PAD). Which of the following instructions should the nurse include in the teaching?

Adjust the thermostat so that the environment is warm.

Apply a heating pad on a low setting to help relieve leg pain.

Wear antiembolic stockings during the day.

Rest with the legs above heart level.

Answer and Explanation

The Correct Answer is A

The nurse should instruct the client to adjust the thermostat so that the environment is warm because cold temperatures can cause vasoconstriction and worsen the symptoms of PAD, such as pain, numbness, and poor wound healing. The client should also avoid exposure to cold weather and wear warm clothing.

Apply a heating pad on a low setting to help relieve leg pain is wrong because it can cause burns, vasodilation, and increased blood ﬂow to the legs, which can increase the risk of bleeding and edema in PAD.
Wear antiembolic stockings during the day is wrong because they can impair arterial circulation and cause ischemia and tissue damage in PAD. Antiembolic stockings are used to prevent venous thromboembolism, not arterial disease.

Rest with the legs above heart level is wrong because it can decrease arterial blood ﬂow to the legs and worsen ischemia and pain in PAD. The client should rest with the legs at or below heart level to promote arterial circulation.

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Correct Answer is ["24"]

Explanation

To calculate the infusion rate, use the formula:

(rate in mL/hr) = (desired dose in units/hr) / (available dose in units/mL)

In this case, the desired dose is 1,200 units/hr and the available dose is 25,000 units / 500 mL = 50 units/mL. Therefore,

(rate in mL/hr) = (1,200 units/hr) / (50 units/mL) = 24 mL/hr

Round the answer to the nearest tenth/whole number and use a leading zero if it applies. Do not use a trailing zero because it could be misread as a decimal point. Therefore, the nurse should set the IV pump to deliver 24 mL/hr.

A. Slow repolarization of ventricular Purkinje fibers B. Atrial depolarization C. Early ventricular repolarization D. Ventricular depolarization

Correct Answer is B

Explanation

The P wave is the first wave on the ECG strip and represents the electrical activity of the atria. It reﬂects the depolarization of the atrial myocardium, which is the process of changing the electrical charge of the cardiac cells from negative to positive, triggering a contraction. The P wave precedes the QRS complex, which represents ventricular depolarization, and the T wave, which represents ventricular repolarization.

The other options are not correct because:

a. Slow repolarization of ventricular Purkinje fibers. This statement is incorrect because it describes the U wave, which is a small and sometimes invisible wave that follows the T wave on the ECG strip. It reﬂects the repolarization of the ventricular Purkinje fibers, which are specialized cardiac cells that conduct electrical impulses to the ventricles. The U wave is more prominent in conditions that cause hypokalemia, such as diuretic use or vomiting.

c. Early ventricular repolarization. This statement is incorrect because it describes the ST segment, which is the ﬂat line between the QRS complex and the T wave on the ECG strip. It reﬂects the early phase of ventricular repolarization, which is the process of restoring the electrical charge of the cardiac cells to negative after a contraction. The ST segment can be elevated or depressed in conditions that cause myocardial ischemia or injury, such as angina or myocardial infarction.

d. Ventricular depolarization. This statement is incorrect because it describes the QRS complex, which is the largest and most visible wave on the ECG strip. It reﬂects the depolarization of the ventricular myocardium, which triggers a ventricular contraction. The QRS complex follows the P wave and precedes the T wave on the ECG strip.

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A nurse is providing discharge teaching to a client who has peripheral arterial disease (PAD). Which of the following instructions should the nurse include in the teaching?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is ["24"]

Explanation

A nurse is interpreting the ECG strip of a client who has bradycardia. Which of the following cardiac components should the nurse identify as the role of the P wave?

Correct Answer is B

Explanation

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