Which term describes the difference between the systolic and diastolic readings?

Blood pressure

Pulse pressure

Cardiac output

Heart rate

Answer and Explanation

The Correct Answer is B

A. Blood pressure: Blood pressure refers to the overall measurement of force exerted by circulating blood on the walls of arteries, typically recorded as systolic over diastolic pressure. It does not specifically describe the difference between these two values.

B. Pulse pressure: Pulse pressure is calculated as the difference between the systolic and diastolic blood pressure readings. It reflects the force generated by the heart with each contraction and provides information about arterial compliance and cardiac function.

C. Cardiac output: Cardiac output is the volume of blood the heart pumps per minute, determined by heart rate and stroke volume. It does not directly describe the numerical difference between systolic and diastolic pressures.

D. Heart rate: Heart rate is the number of heartbeats per minute and is unrelated to the difference between systolic and diastolic blood pressure. It measures cardiac rhythm, not pressure variance.

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Correct Answer is B

Explanation

A. The student nurse performs hand hygiene before opening the sterile kit: Performing hand hygiene is a standard infection prevention measure and is appropriate before handling sterile equipment. It maintains asepsis and does not compromise the sterile field.

B. The student nurse uses their sterile hand to reposition the client's leg: Touching the client with a sterile hand contaminates it and breaches the sterile field. Any contact with nonsterile surfaces requires the sterile hand to be re-gloved and sterile equipment to be replaced to maintain asepsis.

C. The student nurse assesses the client for a latex allergy before beginning the procedure: Screening for latex allergy is appropriate and prevents allergic reactions. This step does not compromise sterility and is a proper safety measure.

D. The student nurse instructs the client not to touch the sterile field during the procedure: Educating the client to avoid the sterile field helps maintain asepsis and is a correct infection control practice. It does not necessitate halting the procedure.

A. Monitor the wound for any redness or purulent drainage. B. Assess body temperature at regularly scheduled intervals. C. Apply heat to the surgical site to increase blood flow. D. Utilize strict aseptic technique during dressing changes.

Correct Answer is D

Explanation

A. Monitor the wound for any redness or purulent drainage: Regular assessment helps identify early signs of infection, but it does not actively prevent infection. Monitoring is important for detection, not risk reduction.

B. Assess body temperature at regularly scheduled intervals: Measuring temperature can help detect systemic infection, yet it does not prevent the development of a wound infection. It is a monitoring intervention rather than a preventive action.

C. Apply heat to the surgical site to increase blood flow: Applying heat may promote circulation, but excessive or inappropriate heat can increase inflammation or tissue damage. Heat is not a standard preventive measure for surgical site infections.

D. Utilize strict aseptic technique during dressing changes: Aseptic technique minimizes the introduction of pathogens into the wound during dressing changes. Proper hand hygiene, sterile supplies, and careful handling directly reduce the risk of infection and are considered a primary preventive measure in postoperative care.

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Which term describes the difference between the systolic and diastolic readings?

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Naxlex Comprehensive Predictor Exams

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