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Nurses and “irreducible” Uncertainty Prof. Carl Thompson RN, PhD. Where?. York. The plan. The problem Some evidence Solutions?. The problem: irreducible uncertainty. David Eddy (MD) Variations & uncertainty linked Definitions Diagnosis Treatment Observing outcomes
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Nurses and “irreducible” Uncertainty Prof. Carl Thompson RN, PhD
Where? York
The plan • The problem • Some evidence • Solutions?
The problem: irreducible uncertainty David Eddy (MD) • Variations & uncertainty linked • Definitions • Diagnosis • Treatment • Observing outcomes • “Putting it all together” (i.e. judgement and decision making)
The problem: errors • 11% admissions suffer adverse events, 50% due to error • 1 million patients suffer iatrogenic harm, • 1000 per year die • 7 - 8.4 additional bed days per adverse event • Mandatory reporting does not work (sensitivity 5%) (NAO 2005, NPSA 2002, Akbari and Sheldon 2006)
The good news. Information behaviour is… • Think number between 10 and 20 • Add the digits together (e.g. 13 = 1+3 = 4) • Subtract from the first number you thought of • Subtract 5 • Convert to a letter (e.g. 1=A, 2=B etc…) • Listen to me…
Entirely predictable Denmark Elephant (*maybe Emu… for Australians)
“the seasoned nurse’s well honed sixth sense enables her to make lifesaving decisions” Benner & Tanner 1997 One solution: intuition
Critical Event Risk Assessment • 50% of cardiac arrests had deteriation documented (Hodgetts 2002) • Nursing knowledge “basics”: heart rate, resps, O2 • 98% of calls to emergency teams/outreach nurse initiated (Cioffi 2000) • 25% of all calls delayed by 1-3 hours (Crispin and Daffurn 1998) • Misinterpretation and mismanging valuable clinical information (McQuillan et al. 1998)
methods • 50 scenarios in wards/units/ITUs • 250 nurses (Oz, UK, Canada, Holland) • years registered 11.6 (8.8) • years in specialty 9 (6.7) • age 34 years (SD 8.1) • 64% > critical care experience • Graduates: UK 6%; Canada 77%; Netherlands 40%; Aus100%
methods Signal detection analysis1 1Stanislaw & Todorov 1999 Calculation of signal detection theory Measures, Behaviour research measures, instruments and computers 31(1), 137-149