Neurology Book



Serial 7s

Aka: Serial 7s, Serial 3s, Spell WORLD Backwards
  1. Indications
    1. Mental State Exam
    2. Cognitive Function Testing (Intellectual Function, Executive Function)
  2. Exam: Tests
    1. Serial 7s
      1. Subtract 7 from 100, then from 93, 86, 79, 72, 65, 58, 51, 44, 37, 30...
    2. Serial 3s
      1. Subtract 3 from 20, then from 17, 14, 11, 8, 5
    3. Spell WORLD Backwards
      1. Patient responds "D-L-R-O-W"
  3. Interpretation
    1. Abnormal in Executive Function disorders or difficulty with Attention and Concentration

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