A patient is to receive a bolus of Heparin 20 units/kg. The patient weighs 121 Ibs. The medication is supplied as 25,000 units/250 mL. How many Ml will the nurse give? (round to the nearest whole number)
The Correct Answer is ["11"]
The patient weighs 121 lbs, which is approximately 55 kilograms (121 ÷ 2.2).
Next, multiply the patient's weight in kilograms by the dosage prescribed, which is 20 units/kg. This results in a total dosage of 1100 units (55 kg × 20 units/kg).
The medication is supplied as 25,000 units in 250 mL, so to find out how many mL of medication is needed, set up a proportion: 25,000 units is to 250 mL as 1100 units is to X mL. Solving for X gives you 11 mL (1100 units × 250 mL ÷ 25,000 units).
Therefore, the nurse will administer 11 mL of Heparin to the patient.
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Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is {"dropdown-group-1":"C","dropdown-group-2":"C"}
Explanation
Ventricular fibrillation (VF) is characterized by a chaotic, rapid, and irregular electrical activity on the ECG, with no identifiable QRS complexes, P waves, or T waves. The heart quivers ineffectively, leading to no blood flow or cardiac output, which results in rapid loss of consciousness and is life-threatening.
Immediate defibrillation is required to restore a normal rhythm. A high-energy shock is delivered to the heart to reset the electrical activity, potentially allowing the heart's natural pacemaker to regain control and resume normal function.
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