The patient requires temperatures to be taken every 2 hours. Which task will be the responsibility of the RN?

Assessing changes in body temperature.

Being aware of the usual values for the patient.

Obtaining temperature measurements at ordered frequency.

Using appropriate route and device

Answer and Explanation

The Correct Answer is A

A. Assessing changes in body temperature. The RN is responsible for assessing trends in temperature and identifying potential clinical implications (e.g., infection, sepsis, or medication reactions).

B. Being aware of the usual values for the patient. While knowing baseline values is important, this is not solely an RN responsibility. Nursing assistants and other healthcare providers also note baseline values.

C. Obtaining temperature measurements at ordered frequency. This task can be delegated to a nursing assistant or licensed practical nurse (LPN), as it is a routine task that does not require assessment.

D. Using an appropriate route and device. While the RN ensures correct procedures are followed, this specific task can also be performed by trained assistive personnel. The RN focuses on interpretation and intervention.

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Correct Answer is C

Explanation

A. Myocardial contractility × myocardial blood flow: While myocardial contractility and blood flow affect cardiac output, they are not part of the formula for calculating it.

B. Ventricular filling time/diastolic filling time: This ratio does not determine cardiac output. While diastolic filling time affects stroke volume, it is not the standard formula for cardiac output.

C. Stroke volume × heart rate: Cardiac Output (CO) = Stroke Volume (SV) × Heart Rate (HR). Stroke volume is the amount of blood pumped per beat, and heart rate is the number of beats per minute. Multiplying these values gives the total volume of blood pumped per minute, making this the correct formula.

D. Preload/afterload: Preload and afterload influence cardiac function but are not used to directly calculate cardiac output.

A. Hypertension B. Constipation C. Bradycardia D. Sedation

Correct Answer is D

Explanation

A. Hypertension: Diphenhydramine (Benadryl) is an antihistamine that typically causes hypotension, not hypertension. It can have a mild vasodilatory effect, leading to a drop in blood pressure in some patients.

B. Constipation: While some antihistamines can cause mild gastrointestinal effects, constipation is not a primary adverse effect of diphenhydramine. Dry mouth and urinary retention are more common due to its anticholinergic properties.

C. Bradycardia: Diphenhydramine can sometimes cause tachycardia (increased heart rate), especially in elderly patients or those prone to cardiovascular effects. Bradycardia (slow heart rate) is not a usual adverse effect.

D. Sedation: Diphenhydramine is a first-generation antihistamine that crosses the blood-brain barrier and has a sedative effect by blocking histamine receptors in the central nervous system. It is commonly used as a sleep aid for this reason.

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The patient requires temperatures to be taken every 2 hours. Which task will be the responsibility of the RN?

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Naxlex Comprehensive Predictor Exams

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