The nurse is obtaining a systolic blood pressure by palpation. While inflating the cuff, the radial pulse is no longer palpable at 90 mm Hg. Which action should the nurse take?
Document the absence of the radial pulse.
Release the manometer valve immediately.
Inflate blood pressure cuff to 120 mm Hg.
Record a palpable systolic pressure of 90 mm Hg.
The Correct Answer is C
A. Document the absence of the radial pulse:
While it's important to document findings accurately, it's also crucial to ensure that blood pressure measurements are obtained correctly. If the radial pulse becomes unpalpable before reaching the expected systolic pressure, further action is needed to obtain an accurate measurement.
B. Release the manometer valve immediately:
Releasing the manometer valve immediately would lead to deflating the cuff and potentially missing the opportunity to obtain an accurate blood pressure measurement. This action is not appropriate at this stage.
C. Inflate blood pressure cuff to 120 mm Hg:
When the radial pulse becomes unpalpable during cuff inflation, it indicates that the cuff pressure is above the systolic pressure. To accurately determine the systolic pressure, the cuff should be inflated to a higher pressure (usually 20-30 mm Hg above the point where the radial pulse disappears) and then slowly deflated while palpating for the return of the radial pulse.
D. Record a palpable systolic pressure of 90 mm Hg:
If the radial pulse is no longer palpable at 90 mm Hg, this suggests that the true systolic pressure is higher than 90 mm Hg. Recording a palpable systolic pressure of 90 mm Hg without further action would likely underestimate the true systolic pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Turn the head to the right and left:
Turning the head involves rotation of the cervical spine, which primarily consists of pivot joints rather than hinge joints. This action is more relevant to the movement of pivot joints.
B. Extend the arm at the side and rotate in circles:
Extending the arm and rotating it in circles primarily involves the movement of ball-and-socket joints, such as the shoulder joint, rather than hinge joints.
C. Bend the arm by flexing the ulna to the humerus:
This action involves bending the arm at the elbow joint by flexing the ulna (forearm bone) towards the humerus (upper arm bone). The elbow joint is a hinge joint, allowing primarily flexion and extension movements.
D. Tilt the pelvis forwards and backwards:
Tilting the pelvis forwards and backwards primarily involves the movement of ball-and-socket joints in the hip area, rather than hinge joints.

Correct Answer is C
Explanation
A. Blood pressure is 142/88 mm Hg:
While elevated blood pressure may have implications for cardiovascular health, it is not directly related to oxygen saturation levels measured by a pulse oximeter.
B. Radial pulse volume is 3+:
A strong radial pulse volume suggests adequate peripheral perfusion, which would not typically contribute to a low oxygen saturation reading.
C. 2+ edema of fingers and hands:
Edema of the fingers and hands can impair the transmission of light through tissues, which may interfere with the accuracy of oxygen saturation readings obtained from a pulse oximeter. Edematous tissues may absorb light and lead to falsely low readings.
D. Capillary refill time is 2 seconds:
Normal capillary refill time indicates adequate peripheral circulation, which would not typically contribute to a low oxygen saturation reading.
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