HESI A2 MATH LONG CLINICAL SCENARIOS
*Q1 - Pediatric Weight Conversion + Safe Dose*
A pediatrician orders Amoxicillin 45mg/kg/day PO divided q12h for a 4-year-old with otitis
media. Mom says child weighs 39 lbs. Convert lbs to kg 2.2 lbs=1 kg, calculate total daily mg,
divide by 2 doses, then mL because supply 400mg per 5mL. Max 1000mg/day safe? Mom has
kitchen spoon what to advise?
Calc: kg=39/2.2=17.72 kg. Daily=45x17.72=797.4 mg safe <1000. Per dose=398.7
mg. mL=398.7/400x5=4.98 mL ∼5.0 mL use oral syringe not kitchen spoon.
A) 5.0 mL per dose safe oral syringe B) 10 mL C) 2.5 mL D) 1 mL Answer: A
*Q2 - Heparin Weight-Based High Alert*
ED 78kg PE. Protocol Bolus 80 units/kg then 18 units/kg/hr. Supply 25,000 units/500 mL =50
units/mL. Two RNs double check high-alert. Calculate bolus, infusion units/hr, mL/hr. Labs:
aPTT goal 60-80 and platelets for HIT?
Calc: Bolus=80x78=6240 units. Infusion=18x78=1404 units/hr. Rate=1404/50=28.08 mL/hr. If
aPTT >100 hold notify bleeding risk.
A) / 28.1 monitor aPTT platelets B) 80 C) 50 D) No monitoring Answer: A
*Q3 - IV Drip Rate gtt/min + Hourly*
Order 1000 mL NS over 8h dehydration. Drop factor 15 gtt/mL. Need mL/hr for pump and
manual gtt/min if pump breaks. CHF risk no overload. If only 6h due infiltration how much
received?
Calc: mL/hr=1000/8=125 mL/hr. gtt/min=125x15/60=31.25 ∼31 gtt/min. In
6h=125x6=750 mL.
A) 125 mL/hr 31 gtt/min 750 mL B) 15 C) 125 D) 60 Answer: A
*Q4 - Intake Output + Percentage*
*Q1 - Pediatric Weight Conversion + Safe Dose*
A pediatrician orders Amoxicillin 45mg/kg/day PO divided q12h for a 4-year-old with otitis
media. Mom says child weighs 39 lbs. Convert lbs to kg 2.2 lbs=1 kg, calculate total daily mg,
divide by 2 doses, then mL because supply 400mg per 5mL. Max 1000mg/day safe? Mom has
kitchen spoon what to advise?
Calc: kg=39/2.2=17.72 kg. Daily=45x17.72=797.4 mg safe <1000. Per dose=398.7
mg. mL=398.7/400x5=4.98 mL ∼5.0 mL use oral syringe not kitchen spoon.
A) 5.0 mL per dose safe oral syringe B) 10 mL C) 2.5 mL D) 1 mL Answer: A
*Q2 - Heparin Weight-Based High Alert*
ED 78kg PE. Protocol Bolus 80 units/kg then 18 units/kg/hr. Supply 25,000 units/500 mL =50
units/mL. Two RNs double check high-alert. Calculate bolus, infusion units/hr, mL/hr. Labs:
aPTT goal 60-80 and platelets for HIT?
Calc: Bolus=80x78=6240 units. Infusion=18x78=1404 units/hr. Rate=1404/50=28.08 mL/hr. If
aPTT >100 hold notify bleeding risk.
A) / 28.1 monitor aPTT platelets B) 80 C) 50 D) No monitoring Answer: A
*Q3 - IV Drip Rate gtt/min + Hourly*
Order 1000 mL NS over 8h dehydration. Drop factor 15 gtt/mL. Need mL/hr for pump and
manual gtt/min if pump breaks. CHF risk no overload. If only 6h due infiltration how much
received?
Calc: mL/hr=1000/8=125 mL/hr. gtt/min=125x15/60=31.25 ∼31 gtt/min. In
6h=125x6=750 mL.
A) 125 mL/hr 31 gtt/min 750 mL B) 15 C) 125 D) 60 Answer: A
*Q4 - Intake Output + Percentage*
