trailmaking B test

^[1]^[2]^[3]^[4]

Clinical significance

tests attentional interference & executive function
poor performance is an independent risk factor for subsequent (first ever) stroke^[2]
poor prestroke performance predicts poststroke mortality^[3]
poor performance may be a manifestation of unrecognized cerebrovascular disease

a timed test that measures the time to draw lines between scattered circles.
- connect numbers & letters in alternating sequence, i.e., 1 to A, then 2 to B, then 3 to C, etc. (see cartoon, fat client only)

↑ Comprehensive Geriatric Assessment, Osterweil et al eds, McGraw Hill, New York, 2000, pg 102-103
↑ ^2.0 ^2.1 Wiberg R et al Cognitive function and risk of stroke in elderly men Neurology, 2010 74(5):379-385 http://www.neurology.org/content/74/5/379
↑ ^3.0 ^3.1 Wiberg B et al The relationship between executive dysfunction and post-stroke mortality: A population-based cohort study. BMJ Open 2012 May 9; 2:e000458 PMID: https://www.ncbi.nlm.nih.gov/pubmed/22573701
↑ Trail Making Test (TMT) Parts A & B http://www.healthcare.uiowa.edu/igec/tools/cognitive/trailmaking.pdf