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Normal values
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The following is a checklist that can be used as a template to memorise normal quantitative values for basic medical conditions and management.

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Vital signs (average) < 6 months 6 months – 3 years 3 – 12 years Adult
Pulse 120–140 110 80 – 100 60 – 100
Respiratory rate 45 30 20 14
BP (mmHg) 90/60 90/60 100/70 ≤ 130/85

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Children's weight 1–10 years
Rule of thumb: Wt = (age + 4) × 2 kg

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Fever—temperature (morning)(a)
(a) There is considerable diurnal variation in temperature so that it is higher in the evening (0.5–1°C). I would recommend the definition given by Yung et al. in Infectious Diseases: a Clinical Approach: ‘Fever can be defined as an early morning oral temperature > 37.2°C or a temperature > 37.8°C at other times of the day’.
Oral > 37.2°C
Rectal > 37.7°C

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Diabetes mellitus—Diagnostic criteria: blood sugar

Random

1 reading if symptomatic

2 readings if asymptomatic

>11.1 mmol/L
Fasting > 7.0 mmol/L
or the 2 values from an oral GTT
Hypokalaemia
Serum potassium <3.5 mmol/L
Jaundice
Serum bilirubin > 19 μmol/L

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Hyperkalaemia
Serum potassium >5.0 mmol/L
Hypertension
BP > 140/90 mmHg
Alcohol excessive drinking
Males >4 standard drinks/day
Females >2 standard drinks/day
Alcohol health guidelines
Males and females ≤ 2 standard drinks/day
< 4 standard drinks/occasion
Anaemia—haemoglobin
Males < 130 g/L
Females < 115 g/L
Body mass index Wt (kg)/Ht (m2)
Normal 20–25
Overweight > 25
Obesity > 30

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