The nurse attaches a pulse oximeter to a client’s finger and obtains an oxygen saturation reading of 91%. Which assessment finding most likely contributes to this reading?
Capillary refill time is 2 seconds.
2+ edema of fingers and hands.
Radial pulse volume is 3+.
Blood pressure is 142/88 mm Hg.
The Correct Answer is B
Choice A rationale
Capillary refill time is 2 seconds. A capillary refill time of 2 seconds is within normal limits and is unlikely to affect the accuracy of the pulse oximetry reading.
Choice B rationale
2+ edema of fingers and hands. Edema can interfere with the accuracy of pulse oximetry readings by affecting the perfusion of the area where the sensor is placed. This can lead to falsely low oxygen saturation readings.
Choice C rationale
Radial pulse volume is 3+. A strong radial pulse indicates good peripheral perfusion, which should not negatively impact the accuracy of the pulse oximetry reading.
Choice D rationale
Blood pressure is 142/88 mm Hg. While elevated blood pressure can have various effects on the body, it is not likely to directly affect the accuracy of a pulse oximetry reading.
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Correct Answer is A
Explanation
Choice A rationale
Injecting in the abdominal area at least 2 inches (5.1 cm) from the umbilicus is the correct technique for subcutaneous heparin injections. This reduces the risk of injury to blood vessels and nerves and ensures consistent absorption of the medication.
Choice B rationale
Rotating injections between the abdomen and gluteal areas is not recommended for low molecular weight heparin (LMWH) injections. The abdomen is the preferred site for consistent absorption.
Choice C rationale
Massaging the injection site to increase absorption is not recommended for LMWH injections. Massaging can cause bruising and affect the absorption of the medication.
Choice D rationale
Expelling the air in the prefilled syringe prior to injection is not recommended for LMWH injections. The air bubble helps ensure the entire dose is administered and prevents medication from leaking out.
Correct Answer is A
Explanation
Choice A rationale
Positive external places are often used in guided imagery to help clients focus on pleasant and calming environments. This technique can help distract from pain and promote relaxation by engaging the mind in a soothing and peaceful visualization.
Choice B rationale
Tranquil sounds can also be beneficial in relaxation techniques, but they are not the primary focus in guided imagery for chronic pain. Guided imagery typically involves visualizing a serene place rather than focusing solely on sounds.
Choice C rationale
Emotional reflection may not be as effective in reducing chronic pain through guided imagery. This technique is more about visualizing positive and calming environments rather than reflecting on emotions.
Choice D rationale
Motivational phrases are useful in other therapeutic techniques but are not the primary focus in guided imagery for chronic pain. Guided imagery focuses more on visualizing serene and peaceful places.