When it was judged that a patient was too seriously injured, he/she was excluded. A patient judged to be too seriously injured was excluded. When it was judged that a patient should be treated in the ICU, he/she was excluded.
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sshiA patient judged to be treated in the ICU was excludedWhile it does not say 'should', it also does not say 'was', so I suggest that it is ambiguous (as is much of English composition) and should be recast.