71789-2

LOINC Code


LOINC code71789-2
name
descriptionThe term "change in systolic blood pressure" has been developed for use in eMeasures that assess differences in blood pressure readings between two points in time. The LOINC term is intended to represent the difference between two systolic blood pressure readings as a positive integer, a negative integer, or a zero. This "change over time" reflects both the direction and degree of change in blood pressure for patients who are originally not at therapeutic goal. The exact time periods of reference will be explicitly defined elsewhere
statusACTIVE

Fully-Specified Name

componentChange in systolic blood pressure
propertyPressDiff  =  Difference
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
system^Patient
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
method

Additional Names

short nameBP; Chg in sys B/P; Exchange; Point in time; QNT; Quan; Quant; Quantitative; Random; Replace; Survey; SURVEY.GNHLTH

Basic Attributes

classSURVEY.GNHLTH
type4  Surveys
example UCUM unitsmm Hg
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)

History/Usage

first released
last updated2.67
last change typeMIN  - change to field other than name
change reasonmm[Hg]

Related Names



Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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