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Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.
2 passages
Don't prescribe stress ulcer prophylaxis to medical inpatients unless they are at high risk of gastrointestinal bleeding. Setting: medical inpatient outside the ICU without high-risk features for GI bleeding (mechanical ventilation, coagulopathy, GI bleed history) Why: Routine stress ulcer prophylaxis in low-risk inpatients does not prevent clinically important bleeding and increases pneumonia and C. difficile risk. Consider instead: reserve acid suppression for patients meeting high-risk criteria Source: Society of Hospital Medicine (Choosing Wisely, US, 2013).
Don't perform repetitive daily laboratory testing (such as CBC and chemistry panels) in the face of clinical and laboratory stability. Setting: clinically stable hospitalized patient with stable laboratory values Why: Repetitive daily labs in stable inpatients contribute to iatrogenic anemia, false positives, patient discomfort, and cost without changing management. Consider instead: order labs to answer a specific clinical question rather than by daily routine Source: Society of Hospital Medicine (Choosing Wisely, US, 2013).