The healthcare provider (HCP) changes a prescription for a nitroglycerin IV infusion from 10 mcg/min to 15 mcg/min. The IV bag contains nitroglycerin 50 mg in dextrose 5% in water (DW) 250 mL. The nurse should program the infusion pump to deliver how many mL/hr? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
The Correct Answer is ["5"]
Calculation:
Calculate the New Nitroglycerin Dose in mcg/hour
Dose (mcg/hour) = Dose (mcg/min) × 60 min/hour
=15 mcg/min × 60 min/hour = 900 mcg/hour
Convert mcg to mg
Dose (mg/hour) = Dose (mcg/hour) / 1000 mcg/mg
=900 mcg/hour / 1000 mcg/mg
= 0.9 mg/hour
Calculate the Concentration of Nitroglycerin in the IV Bag
Concentration (mg/mL) = Total mg of Nitroglycerin / Total mL of Solution
=50 mg / 250 mL
= 0.2 mg/mL
Calculate the Infusion Rate = Infusion Rate (mL/hour)
=0.9 mg/hour / 0.2 mg/mL
= 4.5 mL/hour
Round to the Nearest Whole Number
4.5 mL/hour rounded to 5 mL/hour
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D"]
Explanation
A. Allow the family to touch and talk to the client. Family presence can provide emotional support for both the client and loved ones. Even though the client is sedated and has a low GCS, familiar voices and touch may reduce stress and anxiety. Allowing family interaction fosters comfort and connection during a critical time.
B. Reassess the client's vascular access. Maintaining secure and functional vascular access is essential for administering fluids, medications, and emergency interventions. Before transport, the nurse should confirm IV patency, ensure secure connections, and assess for signs of infiltration or malfunction. Trauma patients may require additional or larger bore IV access for fluid resuscitation or transfusion.
C. Assess neurological vital signs every 15 minutes. Frequent neurological assessments are crucial in head trauma patients with a low GCS to monitor for signs of worsening intracranial pressure, cerebral edema, or herniation. Changes in pupil response, motor function, or vital signs may indicate neurological deterioration requiring urgent intervention. Monitoring trends over time is necessary for early detection of complications.
D. Administer ophthalmic ointment. Clients with a low GCS often have impaired blinking, placing them at risk for corneal abrasions and dryness. Applying ophthalmic lubricant or artificial tears protects the cornea from injury and promotes eye health. Preventing exposure keratitis is essential in unconscious or sedated clients to avoid long-term ocular damage.
E. Apply soft bilateral wrist restraints for transport. Restraints are unnecessary because the client is sedated, intubated, and has a GCS of 6, meaning they cannot attempt self-extubation or interfere with care. Restraints should only be used if the client demonstrates a risk of harm. Standard transport protocols prioritize sedation and safety measures over restraints unless specifically required.
Correct Answer is C
Explanation
A. Narrowed pulse pressure, presence of 3+ femoral pulses, apneic episodes. Narrowed pulse pressure is consistent with hypovolemic shock, but 3+ femoral pulses are not expected, as shock leads to weak, thready pulses due to reduced perfusion. Apneic episodes typically occur in the late stages of shock, not in the early or progressive stages.
B. Widening pulse pressure, muffled heart sounds, presence of atrial gallop. A widening pulse pressure and muffled heart sounds are more indicative of cardiac tamponade, not hypovolemic shock. Hypovolemic shock is characterized by a narrowing pulse pressure due to a drop in systolic blood pressure while diastolic pressure remains relatively stable.
C. Increased heart rate, lowered systolic reading, peripheral extremity mottling. Tachycardia is an early compensatory response to hypovolemia as the body attempts to maintain cardiac output. As shock progresses, systolic blood pressure drops due to inadequate circulating volume. Peripheral extremity mottling occurs as the body shunts blood to vital organs, reducing perfusion to the skin. These signs are characteristic of progressive hypovolemic shock.
D. Irregular heart rate, elevated diastolic reading, increased respiratory rate. An irregular heart rate is not a primary indicator of hypovolemic shock. While respiratory rate increases in response to decreased oxygen delivery, an elevated diastolic reading is uncommon, as diastolic pressure tends to stay stable or decrease slightly with ongoing hypovolemia.
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