Formula sheets, the key method steps for every topic and 6 practice problems, with full solutions at the back.
A woman who has had a caesarean asks when she can drive again. Which answer is most accurate?
Which finding in a woman 2 hours after birth requires the most urgent follow-up?
A patient weighs 90 kg and is prescribed 2 mg/kg as a single dose. Find the dose D in mg.
An infusion contains 40000 units of a drug in 1000 mL. The prescription is 500 units per hour. At what rate R do you set the pump, in mL/h?
1000 mL was ordered over 12 hours. After 3 hours you find that 900 mL is still in the bag, and the order must still finish on time. To what rate R in mL/h must the pump be reset?
500 mL was ordered over 6 hours. After 3 hours you find that 290 mL is still in the bag, and the order must still finish on time. By what percentage Δ must the original pump rate be increased?
Answer: D · When she can brake hard without pain
There is no fixed time. She can drive when she can brake suddenly, look over her shoulder and wear a seat belt comfortably. Many women need about 4 to 6 weeks, and insurance rules may apply.
Answer: C · Heart rate 124/min with cool, clammy skin
Tachycardia with cool, clammy skin is an early sign of hypovolaemia from hidden or ongoing bleeding. A firm fundus and moderate lochia are normal, and mild temperature rise and shivering are common in the first 24 hours.
Answer: D = 180 mg
Dose calculation: the amount to give equals what is prescribed divided by what you have, times the quantity it comes in: amount = (desired dose/stock strength) × stock volume. Always keep the units the same (convert g to mg, mg to mcg first) and check that the answer is sensible.
Answer: R = 12.5 mL/h
Dose calculation: the amount to give equals what is prescribed divided by what you have, times the quantity it comes in: amount = (desired dose/stock strength) × stock volume. Always keep the units the same (convert g to mg, mg to mcg first) and check that the answer is sensible.
Answer: R = 100 mL/h
Infusion rates: a pump is set in mL/h = volume/time in hours. A gravity drip is counted in drops per minute: gtt/min = volume (mL) × drop factor (gtt/mL)/time (min). The drop factor is printed on the tubing package: macrodrip sets deliver 10, 15 or 20 gtt/mL (blood sets often 10 gtt/mL in the US, 15 in the UK) and microdrip sets 60 gtt/mL. Always use the drop factor the question or package gives.
Many hospitals allow such an adjustment up to 25% without a new order; check local policy.
Answer: Δ = 16 %
Infusion rates: a pump is set in mL/h = volume/time in hours. A gravity drip is counted in drops per minute: gtt/min = volume (mL) × drop factor (gtt/mL)/time (min). The drop factor is printed on the tubing package: macrodrip sets deliver 10, 15 or 20 gtt/mL (blood sets often 10 gtt/mL in the US, 15 in the UK) and microdrip sets 60 gtt/mL. Always use the drop factor the question or package gives.
Many hospitals allow such an adjustment up to 25% without a new order; check local policy.
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