A nurse is obtaining a client’s manual blood pressure and is having difficulty auscultating sounds.
Which of the following actions should the nurse take?
Apply the largest cuff available.
Use the palpatory method to determine blood pressure.
Place the arm above the level of the client’s heart.
Deflate the cuff quickly.
The Correct Answer is B
The systolic pressure is estimated by noting the pressure at which the pulse disappears and reappears. The diastolic pressure is not measured by this method, but it can be useful when the sounds are difficult to hear.
Choice A is wrong because applying the largest cuff available can result in a falsely low reading. The cuff size should be appropriate for the client’s arm circumference.
Choice C is wrong because placing the arm above the level of the client’s heart can also cause a falsely low reading. The arm should be at the level of the heart for an accurate measurement.
Choice D is wrong because deflating the cuff quickly can lead to missing or skipping sounds, resulting in an inaccurate reading. The cuff should be deflated slowly and evenly.
Normal ranges for blood pressure vary depending on age, sex, and health conditions, but generally, a systolic pressure below 120 mmHg and a diastolic pressure below 80 mmHg are considered normal for adults.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is choice B. Applying an orthotic to the client’s foot.
An orthotic is a device that supports or corrects the function of a body part.
In this case, an orthotic can help prevent foot drop, which is a common contracture deformity in immobile patients.
Foot drop occurs when the muscles that lift the foot become weak or paralyzed, causing the foot to hang down at the ankle. An orthotic can keep the foot in a neutral position and prevent shortening of the calf muscles and Achilles tendon.
Choice A is wrong because a trochanter wedge is used to prevent external rotation of the hip, not contracture. A trochanter wedge is a triangular-shaped pillow that is placed between the legs to keep them parallel and aligned.
Choice C is wrong because a towel roll under the neck is used to maintain proper cervical alignment, not contracture. A towel roll can prevent hyperextension of the neck and support the natural curve of the spine.
Choice D is wrong because a pillow under the knees can actually cause contracture of the knee joint by keeping it in a flexed position. A pillow under the knees can also reduce blood flow to the lower extremities and increase the risk of deep vein thrombosis.
Contracture is a permanent tightening of the muscles, tendons, skin, and surrounding tissues that causes the joints to shorten and stiffen.
Contracture can limit the range of motion and function of the affected body part. Contracture can be caused by inactivity, scarring, or diseases that affect the muscles or nerves. Prevention of contractures requires early diagnosis and initiation of physical medicine approaches such as passive range of motion exercises and splinting before contractures are present or while contractures are mild.
Correct Answer is D
Explanation
The correct answer is choice D. The nurse should choose a vein that is palpable and straight for IV catheter insertion.
This will facilitate the insertion of the catheter and reduce the risk of complications such as infiltration, phlebitis, or hematoma. A straight vein will also allow the catheter to be inserted up to the hub, which reduces the risk of contamination along the length of the catheter.
Choice A is wrong because selecting a site on the client’s dominant arm can interfere with the client’s mobility and increase the risk of dislodging the catheter. The nurse should choose a site on the client’s non-dominant arm, preferably on the hand or forearm.
Choice B is wrong because applying a tourniquet below the venipuncture site will impede blood flow and make it harder to locate a suitable vein. The nurse should apply a tourniquet above the venipuncture site, about 10 to 15 cm from the insertion site.
Choice C is wrong because elevating the client’s arm prior to insertion will decrease venous filling and make it harder to palpate a vein. The nurse should lower the client’s arm below the level of the heart to increase venous distension.
Normal ranges for IV catheter size and insertion angle depend on several factors, such as the type and duration of therapy, the condition and size of the vein, and the age and preference of the client.
In general, smaller gauge catheters (20 to 24) are preferred for peripheral IV therapy, and larger gauge catheters (14 to 18) are used for rapid fluid administration or blood transfusion. The insertion angle can vary from 10 to 30 degrees, depending on the depth and location of the vein.
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