critical value


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critical value

Critical results Lab medicine A lab result from a Pt that must be reported immediately to care provider, which may require urgent therapeutic action. See Decision levels.
Critical values in the laboratory
Chemistry
Analyte  SI units US units
Calcium < 1.65 mmol/L  < 6.6 mg/dl
   > 2.22 mmol/L   > 12.9 mg/dl
Glucose  < 2.60 mmol/L  < 46 mg/dl
       > 26.9 mmol/L   > 484 mg/dl
K+  < 2.8 mmol/L  < 2.8 mEq/L
    > 6.2 mmol/L  > 6.2 mEq/L
      > 8.0 mmol/L if hemolyzed
Na+   < 120 mmol/L  < 120 mEq/L
      > 158 mmol/L  > 158 mEq/L
CO2 –plasma  < 11 mmol/L  < 11 mMol
   > 40 mmol/L  > 40 mMol
Hematology, eg blasts or sickle cells on peripheral smear, may indicate leukemia or sickle cell anemia
Microbiology, eg positive gram stain or culture from blood, serosal fluids or CSF, acid-fast stain or positive mycobacterial culture results
Transfusion medicine Incompatible cross-match, positive VDRL

critical laboratory value

, critical value
A test result obtained from a clinical specimen that is so far outside the normal range that it is likely to indicate an acute risk to the health of the patient.
Synonym: critical result
References in periodicals archive ?
They identified weaknesses in the reporting process as (1) critical values were not always reported by the clinical laboratory; (2) when critical values were reported, it was often to someone not directly involved in the patient's care; (3) documentation of critical value reporting by the laboratory was incomplete; (4) clinicians' awareness of critical values was not always documented; (5) clinicians' decisions on corrective actions were not documented adequately; and (6) the time interval between the availability of critical test results and the institution of corrective measures was sometimes unacceptably long.
Critical values in pediatric surgical pathology: definitions, implementation, and reporting in a children's hospital.
Will electronic medical records change the method by which critical values are reported?
7) A recent example of regulatory adoption is the development by the Joint Commission on Accreditation of Healthcare Organizations of a standard requiring the receiving physician or health care professional to "read-back" the critical value results with patient identifiers and to assess the critical value turnaround times.
Table 1 summarises the critical value policies of the laboratories surveyed.
For example, for TM1 (read text), the instructor enters a critical value of 1 to four necessary conditions--NC1 (describe/demonstrate expected performance), NC2 (facilitate recall of well-organized knowledge base or facilitate recall of prerequisite concepts), NC3 (deliver meaningfully organized material, provide definition & distinctive features, or explain/demonstrate application) and NC5 (elicit expected performance and provide practice)--to indicate that they are met by TM1 (read text); but, he enters a critical value of 0 to NC4 (facilitate elaboration of material or work examples in different contexts) to indicate that it is not met by TM1 (read text).
The ALERTS system captures the outgoing HL-7 result and, if the result fulfills the critical value criteria defined in Table 1, sends a critical value alert via the text pager system.
Using the survey scale, a critical value of 5 indicates agreement with Garten, a critical value of 4 signals somewhat agree, while a critical value of 3 means a somewhat disagree position.
One of the most visible examples of the emphasis on the increasingly critical value of archival data lies with the HIPAA (Health Insurance Portability and Accounting Act) requirements.
A standard F-test for analysis of variance for mean growing season rainfall by township indicated significant differences with a critical value for comparison (LSD) of 1.
Goodie for you," it seems to jeer, somehow unmoved by your brilliance and thoroughly unwilling to affirm any critical value you might lend it for making such an observation possible.
A yes/no recession signal comes from comparing the forecasted probability of recession with a critical value determined prior to the out-of-sample forecasting.