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Cockcroft-Gault equation

(140-age) x weight (kg) / (72 x SCr) x 0.85 if female

IBW (kg) males

IBW (kg) females

Males 50+[2.3× height over 60in]

Females 45.5 + [2.3× height over 60in]

Adjusted Body weight

IBW +0.4(actual body weight-IBW)

Mean artial pressure (MAP)

1/3 systolic blood pressure + 2/3 diastolic blood pressure

Corrected sodium

Use when patient has a high blood glucose

Measured sodium + 0.016 × (serum glucose - 100)

Lbs to kgs

2.2 lbs in 1 kg

mls to oz

30 mls in 1 oz

Normal levels of potassium

3.5 - 5.0 mEq/L

Normal levels of sodium

136 - 142 mEq/L

Normal levels of chloride

96 - 106 mEq/L

Normal levels of creatinine

0.6 - 1.2 mg/dL

Normal levels of BUN (blood urea nitrogen)

8 - 23 mg/dL

Normal levels of glucose

70 - 110 mg/dL

Normal levels of total serum calcium

8.2 -10.2 mg/dL

Normal levels of WBC

4.5 - 11.0 ×10³3 cells/mm³

Normal levels of hemoglobin

Men: 14-18 g/dL

Women: 12-16 g/dL

Relative risk reduction (RRR)

Absolute risk in exposed / absolute risk in the unexposed group

Absolute risk reduction (ARR)

Control event rate - experimental event rate (CER - EER

Number needed to treat (NNT)

1/absolute risk reduction

Number needed to harm (NNH)

1/attributable risk

Attributable risk (AR)

Exposed event rate - control event rate