List the three steps of the diagnostic process
a manifestation of disease reported by the patient
a symptom
corresponds with history-taking
subjective
Method that focuses on patients’ ideas and feelings (especially fears) about their illness, as well as the impact their condition has on their functioning and their expectations
patient-centred interviewing
Inspection, auscultation (listening), percussion, palpation and other maneuvers to gather further information
Physical Exams
manifestation of a disease that the clinician perceives
a sign
- corresponds with physical exam
Information from physical exams is often charted as _______ notes
objective
A list of conditions that are candidates for explaining the patient’s concerns
Differential Diagnosis
failing to consider reasonable alternatives after an initial diagnosis is made
premature closure
In expert clinicians, clinically-relevant memory is accessed in patterns termed
illness scripts
______ scripts to learn and to compare and contrast conditions
Disease illness
______ scripts, to facilitate differential diagnosis
Patient illness
Need to consider how likely different conditions are in order to make decisions about what to do
- people don’t seem to do this well without training
Probability
Evidence
The value of a piece of evidence is well-represented by a ________
likelihood ratio (LR)
________ are probabilities beyond which one will take certain actions and/or stop gathering information
- Like a diagnostic “finish line”
Thresholds
The ___________________ involves gathering and interpreting information, and (re-)considering different hypotheses in light of this information
diagnostic process
Components of a disease illness script
epidemiology (3)
demographics: age, sex, race/ethnicity, socioeconomic status
risk factors: pre-existing conditions
exposures: travel, occupational, medication, hobbies, sexual, drugs, close contacts
time course
duration: hyperacute, acute, subacute, chronic
persistence/pattern
constant: stable progressive
episodic: waxing and waning, intermittent
Clinical Presentation
The most important signs and symptoms
What constitutes a high-quality disease illness script (2)
How do you process a disease illness script?
Problem Representation
- create a problem list
- process the list
- emphasize the most valuable evidence and de-emphasize less important valuable evidence
- abstract the patient’s concerns into medical language
- finalize the problem representation in a way that it can be compared with disease illness script
A concise representation of the patient’s concern that allows matching with a disease illness script
Patient Illness Scripts