Glucose Observations Perioperative

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Description

This phenotype is used to return any glucose measurements associated with a case from the start of preoperative care through the end of care in the post-anesthesia care unit.

Limitation

Time bounds are limited to those determined by the 'Preop Start Time' and 'PACU End Time' phenotypes, which are an estimation based on documentation in the EHR and may not be the exact time that that the patient was in the care of preop holding and PACU. For institutions not contributing preop and PACU data, this phenotype is limited to the intraoperative period and may be missing glucose values outside of that timeframe. Glucose values <2 mg/dL and >600 mg/dL are excluded from this phenotype.

Data quality is limited to individual site documentation accuracy, completeness, and variable mapping, which is performed by each site, independently. MPOG, as the coordinating center, reviews data quality at each data upload and monthly via Data Diagnostics and Case Validation tools. This review, while thorough, may not contain all data elements relevant to this phenotype and thus should be carefully reviewed by the user.

Value Type

Numeric

Enumeration

Value	Value Code	Definition

Return Columns

Name	Data Type

Granularity

Logic

This phenotype finds and returns all instances of glucose measurements during the perioperative time frame (as determined by the 'Preop Start Time' and 'PACU End' phenotypes) that are mapped to concepts in the 'Glucose Labs (POC)' and 'Glucose Labs (Formal)' concept subsets. Values between 20 and 600 are included.

'Glucose Labs (POC)' Concept Subset:

3405 POC - Blood Gas - Glucose

3361 POC - Glucose (Fingerstick)

3362 POC - Glucose (Unspecified Source)

3497 POC - Glucose (Fingerstick), mmol/L

3498 POC - Glucose (Unspecified source), mmol/L

3499 POC - Blood gas - Glucose, mmol/L

'Glucose Labs (Formal)' Concept Subset:

5036 Formal lab - Blood gas - Glucose

5003 Formal lab - Glucose, Serum/Plasma

3500 Formal lab - Glucose, Serum/Plasma, mmol/L

3501 Formal lab - Blood gas - Glucose, mmol/L

*Convert mmol/L to mg/dl using the below equation

mmol/L x 18.018 = mg/dl