Attempt review · why, not just what
Med-2 Clerkship · Student
Grace was close; a few unpinned findings (and a distractor) explain where the reasoning slipped.
Each error traced back to the pin decisions that caused it
BecauseNever pinned “Sodium” — so the pre-test probability for Syndrome of inappropriate antidiuresis (SIADH) stayed low and a mimic outranked it.
Pin the discriminating findings before committing the differential — they raise the pre-test probability that puts Syndrome of inappropriate antidiuresis (SIADH) on top.
The evidence behind the causal read
Diagnostic clue
Submitted vs. expected ranking
| Diagnosis | Expected | Learner | Outcome |
|---|---|---|---|
| Syndrome of inappropriate antidiuresis (SIADH)Working diagnosis | #1 | #2 | Misranked |
| HypothyroidismReasonable alternative | #2 | #2 | Correct |
| Primary polydipsiaReasonable alternative | #3 | #3 | Correct |
Pin recall, by intent