The healthcare provider orders dobutamine at 12 mcg/kg/min. The client weighs 75 kg. The pharmacy provides 250 mL of D5W with 1 g of dobutamine. How many mL/hr should the IV pump be programmed for? (Round to a whole number.)
13
140
14
134
The Correct Answer is C
A. This is an underestimation due to a miscalculation of the dose rate.
B. This is an overestimation due to a miscalculation of the dose rate.
C. 1. Calculate the desired dose of dobutamine:
Desired dose (mcg/min) = Dose per kg (mcg/kg/min) x Weight (kg)
Desired dose (mcg/min) = 12 mcg/kg/min x 75 kg = 900 mcg/min
2. Convert mcg/min to mg/hr:
900 mcg/min x 60 min/hr = 54,000 mcg/hr
54,000 mcg/hr ÷ 1000 mcg/mg = 54 mg/hr
3. Calculate the concentration of dobutamine in the solution:
Concentration (mg/mL) = Total amount of dobutamine (mg) / Total volume (mL)
Concentration (mg/mL) = 1000 mg (1 g) / 250 mL = 4 mg/mL
4. Calculate the infusion rate (mL/hr):
Infusion rate (mL/hr) = Desired dose (mg/hr) / Concentration (mg/mL)
Infusion rate (mL/hr) = 54 mg/hr / 4 mg/mL = 13.5 mL/hr
5. Round to the nearest whole number:
Infusion rate (mL/hr) = 14 mL/hr
Therefore, the IV pump should be programmed for 14 mL/hr.
D. This is an overestimation due to a miscalculation of the dose rate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. A mild pain level of 3/10 is common after angioplasty and is not immediately concerning.
B. Minimal bruising at the groin is expected after this procedure and is not alarming.
C. A weakened pedal pulse and a cool leg could indicate compromised circulation, which is a serious concern post-angioplasty. Immediate assessment is needed to check for possible complications such as re-occlusion.
D. A blood pressure of 154/78 mmHg is somewhat elevated but not alarming.
Correct Answer is D
Explanation
A. Amiodarone is an antiarrhythmic used to treat ventricular arrhythmias like monomorphic VT, but it is not the first-line treatment for a pulseless patient. Defibrillation should be performed immediately, and amiodarone can be administered after defibrillation if the rhythm persists.
B. CPR is essential for maintaining circulation in a pulseless patient, but defibrillation should be the first priority for monomorphic VT. CPR should be continued if defibrillation is not immediately available, but the most effective intervention is defibrillation to attempt to restore normal rhythm.
C. Cardioversion is used for stable, regular arrhythmias, but for a pulseless client in monomorphic VT, defibrillation is the appropriate first intervention. Cardioversion is typically used when the patient is conscious or stable and is not a priority for pulseless VT.
D. For a pulseless client with monomorphic ventricular tachycardia, defibrillation is the priority intervention. Defibrillation delivers an electric shock to the heart, which may terminate the abnormal rhythm and allow the heart to return to normal sinus rhythm. This is the most effective and immediate treatment for a pulseless client in ventricular tachycardia.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.