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.)
The Correct Answer is ["10"]
ML
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
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is C
Explanation
A. A client who had dialysis and is using an arteriovenous shunt in the left lower forearm. This is incorrect because the arteriovenous shunt is in the lower forearm, not the upper arm where blood pressure is measured. The right arm can still be used.
B. A client who had a right hemisphere stroke. This is incorrect because a stroke does not necessarily contraindicate blood pressure measurement on the affected side unless there are complications such as edema or weakness.
C. A client who has a right peripherally inserted central catheter. This is correct because taking a blood pressure on the same side as a peripherally inserted central catheter (PICC) can cause pressure that may damage the catheter or affect its function. The left arm should be used instead.
D. A client who had blood drawn from the right antecubital area 1 hr ago. This is incorrect because drawing blood from an arm does not contraindicate blood pressure measurement in that arm after a short period.
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