Study Flashcards
What is a disease illness script?
representation of a condition in the mind of a practitioner
what are the components of a disease illness script?
- epidemiology
- time course
- clinical presentation
- mechanisms/pathophysiology
Epidemiology
- demographics - age, sex, race/ethnicity. socioeconomic status
- risk factors - pre-existing conditions
- exposures - travel, work, hobbies, medications
Time Course
- duration - hyperacute, acute, subacute, chronic
- persistence/pattern - constant (stable, progressive), episodic (waxing and waning, intermittent)
Clinical Presentation
signs and symptoms
what do you need in disease illness scripts to make it high quality?
- use medical terminology and categories
- will change over time with experience and research
what are the components of a problem representation
- create a problem list
- process this list - emphasize the most valuable evidence and de-emphasize less valuable evidence
- finalize the problem representation in a way that it can be compared with disease illness scripts
what is a patient illness script
a concise representation of the patient’s concern that allows matching with a disease illness script
components of a patient illness script
- epidemiology
- time course
- clinical presentation
- other important medical history
what do you exclude in the epidemiology for patient illness script compared to the disease illness script?
typically exclude race/ethnicity, socioeconomic status, physical characteristics
Differential diagnosis
the process by which clinicians consider some possible causes of the patient’s signs and symptoms before making a final diagnosis
why not just go with your first guess instead of differential diagnosis?
initial guesses are particularly subject to the availability heuristic
why not just make a list of all possibilities?
- technically impossible
- takes a long time and lead to confusingly long list
a different approach: 3 Ps
Probability: what is most likely?
Prognosis: “must-not-miss” conditions
Pragmatism: what conditions have the best benefit:harm ratio if treated
What is probability?
how likely something is, usually expressed on a scale of 0-100%