Preop Platelet Count

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Description

Most recent preoperative platelet count within 365 days

References:

1.Frank H. Wians, Jr., PhD; Merck Manuel, professional version; Blood Tests: Normal Values; accessed 10-17-2016; http://www.merckmanuals.com/professional/appendixes/normal-laboratory-values/blood-tests-normal-values#v8508814

2. Farmacotherapeutisch kompass, 2016, the Netherlands; published 10-01-2016; accessed 10-17-2016; https://www.farmacotherapeutischkompas.nl/bladeren-volgens-boek/inleidingen/inl-referentiewaarden-klinische-chemie

3. FDA, investigations operations manual 2015, appendix C, Blood Serum Chesitry – Normal Values ; published 2015, accessed 10-17-2016; http://www.fda.gov/downloads/ICECI/Inspections/IOM/UCM135835.pdf

4. Hu R , Li J , Hu Y , Zhang J , Miao M , Zhu K , Liao A , Yang W , Liu Z .; Acute mono-megakaryoblastic leukemia associated with extreme thrombocytosis and complex karyotype abnormalities; Am J Case Rep. 2013 May 17;14:157-160.

Limitation

This collation does not set “normal” ranges for the values. Valid ranges account only for data collection extremes.

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

Values collected under MPOG ID 3445 (POC – Coulter counter – Platelets) OR MPOG ID (5004 (Formal lab – Platelets)

All values converted to x 103 /mcl

Obtain most recent (latest) valid (MPOG concept ID 3345 or 5004) prior to anesthesia start and within 365 days of anesthesia start with number of days prior to surgery

1. Valid >0 and <1500
2. If data invalid ? Output = -998
3. If data valid ? Output = (numeric value x 103 /mcl )

General reference ranges 1,2,3

150-450 x 103 /mcl (Conventional units; = 103 /mm3)
150-450 x 109 /l (SI units)
Extreme: trombocytosis: 2646 *103/mcl4

No conversion necessary, numeric value x 103 /mcl = numeric value x 109/l1,2,3