34538-9

LOINC Code


LOINC code34538-9
name
descriptionAccording to the American Academy of Neurology, the formal diagnosis of orthostatic hypotension requires a 20mm drop in systolic blood pressure or a 10mm drop in diastolic blood pressure within three minutes of standing. Often there is an associated increase in the heart rate, especially if dehydration or bleeding is the cause. (if the patient is taking a beta blocker, the heart rate may not be able to respond with an increase).
statusACTIVE

Fully-Specified Name

componentOrthostatic 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.
systemArterial system
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 nameArt sys; BLOOD PRESSURE MEASUREMENTS.POSITION.MOLEC; BP; Orthostatic BP; Point in time; Position; QNT; Quan; Quant; Quantitative; Random

Basic Attributes

classBP.PSTN.MOLEC
type2  Clinical
order vs. observationOrthostatic BP
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)

Member of these Panels

34553-8

History/Usage

first released
last updated2.73
last change typeMIN  - change to field other than name
change reasonmm[Hg]

Related Names

N

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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