?:definition
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A relationship between a defined repeating activity and the criteria that may trigger the repeating activity to stop, where all items are part of a global library. EXAMPLE(S): Continue repeating kidney dialysis until kidney transplant surgery. Continue performing a certain lab test weekly until the three-month checkup occurs. (target = another activity) Continue substance administration of drug X until the blood pressure is over some minimum threshold number. (target = observation result from another activity that is an observation) Continue substance administration of drug Y until the blood pressure is over some minimum threshold number and either the result of a certain lab test is positive or the subject\'s temperature is elevated, i.e. \'(A and (B or C))\'. OTHER NAME(S): NOTE(S): The criteria to stop the repeating activity by be one of the following: - another defined activity where the repeating activity stops if this other activity occurs - a defined observation result where the repeating activity stops if this observation result occurs - a defined criteria group where the repeating activity stops if this group logically evaluates to true based on its components
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