Fixation error 1: "This and only this!" |
Persistent failure to revise a diagnosis or plan despite plentiful
evidence to the contrary. Available evidence interpreted to fit the initial diagnosis.
Attention allocated to a minor aspect of a major problem. |
Countermeasure: Apply
dynamic decision-making. Accept the possibility that first assumptions may be wrong.
Verify data (see Table 83-3
).
Go through the model of the core process (see Table
83-2
). Call for consultant help to verify your diagnosis. Be aware of
fixation errors! |
Fixation error 2: "Everything but this!" |
Persistent failure to commit to the definitive treatment of a
major problem. |
Extended search for information made without ever addressing
potentially catastrophic conditions. |
Countermeasure: "Rule
out worst case"; assume that the worst possible diagnosis is true and prove to yourself
that this is not true. The assumption that "probable things are probable and rare
things are rare" may run you into trouble. Step back—review the whole situation. |
Fixation error 3: "Everything is OK!" |
Persistent belief that no problem is occurring in spite of plentiful
evidence that it is. Abnormalities attributed to artifacts or transients. Failure
to declare an emergency or accept help when facing a major crisis. Failure to switch
from "business as usual" to "emergency mode." |
Countermeasures:
Remind yourself that artifacts are the last explanation for changes in critical values.
Stay ahead of the game and call for help rather early. |