A patient is to receive a continuous infusion of Diltiazem at 5 mg/hr for Atrial fibrillation. The medication is supplied 125 mg of Diltiazem in 125 mL of Iv fluid. At what rate should the nurse set the IV pump? (round to the nearest whole number)
The Correct Answer is ["5"]
(desired dose in mg/hr) / (concentration of medication in mg/mL) = infusion rate in mL/hr.
In this case, the desired dose is 5 mg/hr, and the concentration of medication is 125 mg in 125 mL, which simplifies to 1 mg/mL.
Therefore, the infusion rate is 5 mg/hr divided by 1 mg/mL, resulting in an infusion rate of 5 mL/hr.
Rounding to the nearest whole number, the nurse should set the IV pump to 5 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. A value of 119 seconds would indicate a therapeutic or even elevated level of heparin, as it is much higher than the normal aPTT range.
B. A value of 98 seconds is still above the normal aPTT range, suggesting that the heparin level is therapeutic, or even too high, but not sub-therapeutic.
C. This is just slightly above the normal range and might be considered a therapeutic range for someone
on heparin, but it’s not sub-therapeutic.
D. This aPTT value is above the normal range but likely not high enough to indicate therapeutic heparin levels, which should typically be between 1.5 to 2.5 times the normal aPTT. A sub-therapeutic level could be indicated with a lower value.
Correct Answer is C
Explanation
A. Mobitz II is a type of second-degree AV block characterized by constant PR intervals and sudden dropped QRS complexes (i.e., the PR interval does not lengthen progressively). This is a more serious block because the dropped beats are unpredictable and could lead to complete block.
B. Sinus bradycardia is a slower-than-normal heart rate (usually less than 60 beats per minute) that originates from the sinus node. First-degree AV block is characterized by a prolonged PR interval, but unlike second-degree block, there are no dropped QRS complexes.
C. Mobitz I (Wenckebach) is a second-degree AV block where the PR interval gradually lengthens with each successive beat until a QRS complex is dropped. After the dropped beat, the cycle repeats. This is a relatively benign block and often resolves without intervention, though it requires monitoring.
D. Third-degree heart block (also known as complete heart block) occurs when there is no communication between the atria and ventricles. The atria and ventricles beat independently of each other. There are no relationship between the P waves and QRS complexes, and the ventricular rate is typically slower than the atrial rate.
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