Formula sheets, the key method steps for every topic and 6 practice problems, with full solutions at the back.
Which presentation is typical of coeliac disease in a toddler some months after cereals are introduced?
An 8-year-old tells the nurse that her uncle touches her in a way she does not like and asks the nurse to keep it secret. What is the best response?
Practice exercise (made-up values, not clinical guidance). A bag contains 10 000 units of heparin in 250 mL. The order is 18 units/kg/h for a patient who weighs 105 kg. At what rate R do you set the pump, in mL/h? Round to one decimal place.
Practice exercise (made-up values, not clinical guidance). A bag contains dopamine 400 mg in 250 mL. The order is 3 mcg/kg/min for a patient who weighs 82 kg. At what rate R do you set the pump, in mL/h? Round to one decimal place.
Practice exercise (made-up values, not clinical guidance). The record shows a patient's intake and output for one 8-hour shift. The IV infusion ran at the rate shown for the whole shift. Find the total intake I in mL.
Practice exercise (made-up values, not clinical guidance). A 500 mL infusion starts at 11:30 at 120 mL/h. After 3 hours the rate is changed to 60 mL/h and is not changed again. How many hours t after the start will the bag be empty? Round to one decimal place.
Answer: C · Chronic diarrhoea, a swollen abdomen, irritability and poor weight gain
Gluten damages the small bowel lining in coeliac disease, causing malabsorption with chronic diarrhoea, bulky stools, abdominal distension, irritability and faltering growth. Diagnosis uses blood antibody tests and often a bowel biopsy while still eating gluten.
Answer: C · Listen calmly, praise her for telling, explain it must be shared, and follow safeguarding
The nurse listens without showing shock, reassures the child, avoids leading questions, records her words accurately and explains that people who can help need to know. The concern is reported at once through the safeguarding procedure.
Answer: R = 47.3 mL/h
Heparin and insulin infusions: concentration = units in the bag/bag volume (units/mL). Pump rate (mL/h) = units per hour/concentration, and units per hour = mL/h × concentration. For a weight-based order, units/h = units/kg/h × weight first. A bolus volume = units needed/vial strength. The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
Answer: R = 9.2 mL/h
Titrated drips: first find the concentration in mcg/mL (mg × 1000/mL). For a weight-based order, mcg/min = mcg/kg/min × weight. Then mL/h = mcg/min × 60/concentration. Working backwards, mcg/kg/min = mL/h × concentration/(60 × weight). The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
Answer: I = 1600 mL
Intake and output: intake counts everything that goes in (oral fluids, IV infusions, IV medications and flushes, tube feeds); ice chips count as half their volume. Output counts urine, drains, vomit and other losses. Balance = total intake − total output; a negative balance is a net loss. The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
Answer: t = 5.3 h
Infusion time: time (h) = volume to infuse (mL)/rate (mL/h); use the volume still left in the bag, not the bag size. Volume infused = rate × time. Convert decimal hours to hours and minutes with the fraction × 60 (0.5 h = 30 min, not 50 min). The numbers are for practice only; at the bedside always follow local protocols and have high-risk doses double-checked.
That is about 5 h 20 min, so the bag runs out at about 16:50.
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