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A nurse is preparing to administer heparin at 1,000 units/hr via continuous IV infusion to a client who had a coronary artery bypass graft. Available is heparin 25,000 units in dextrose 5% in water in 250 mL. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["10"]

The formula to calculate the IV flow rate is:

mL/hr =

(Desired dose (units/hr)×Total volume (mL))/ Available dose

Substituting the given values:

(1,000×250)/25000

= 250,000/25,000

= 10ml/hr

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Free Nursing Study Resources

Correct Answer is B

Explanation

A. Obtain a tympanogram reading prior to initiating the test. This is incorrect because a tympanogram assesses middle ear function and is not part of the Weber test, which evaluates hearing loss type.
B. Place a vibrating tuning fork on the top of the child's head. This is correct because the Weber test involves placing a vibrating tuning fork on the midline of the skull to determine if sound is heard equally in both ears, helping to differentiate between conductive and sensorineural hearing loss.
C. Hold a vibrating tuning fork 1 to 2 cm (0.4 to 0.8 in) from the child's ears. This is incorrect because this describes the Rinne test, which compares air conduction to bone conduction.
D. Measure the amount of time the child can hear the sound. This is incorrect because the Weber test does not measure duration but assesses lateralization of sound perception.

A. Lubricate the catheter with water-soluble gel. B. Attach a prefilled syringe to the catheter inflation hub. C. Cleanse the client's meatus with antiseptic solution. D. Position the sterile drape leaving the perineum exposed.

Correct Answer is D

Explanation

A. Lubricating the catheter with water-soluble gel is important but is done after preparing the sterile field.
B. Attaching a prefilled syringe to the catheter inflation hub is performed after insertion to secure the catheter, not before.
C. Cleansing the client’s meatus with antiseptic solution is essential for infection prevention but is done after the sterile field is set up.
D. Positioning the sterile drape while leaving the perineum exposed is the first step because it maintains a sterile field and provides a clean working area for catheter insertion. This prevents contamination and reduces the risk of infection.

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Nursing Test Bank

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