What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActive

LOINC Code 20045-1: Peak inspiratory flow Respiratory system airway opening --at 2.0 liter per second on ventilator

Name: LOINC Code 20045-1: Peak inspiratory flow Respiratory system airway opening --at 2.0 liter per second on ventilator
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.844Z

20045-1 is a LOINC code used to identify Peak inspiratory flow Respiratory system airway opening --at 2.0 liter per second on ventilator in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Peak inspiratory flow^at 2.0 liter per second on ventilator. It is commonly used with the system or sample type Respiratory system.airway opening.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Peak inspiratory flow^at 2.0 liter per second on ventilator. It is commonly used with the system or sample type Respiratory system.airway opening.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Peak inspiratory flow Respiratory system airway opening --at 2.0 liter per second on ventilator
Peak inspiratory flow^at 2.0 liter per second on ventilator
"ao" in Related Names refers to "Airway opening"
@ 2.0 L/s on vent; 2nd; AO; Breathing; Dynamic; Lung; Lungs; Pmax; Point in time; Pressure; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; RS

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Peak inspiratory flow Respiratory system airway opening --at 2.0 liter per second on ventilatorPmax @ 2.0 L/s on vent Airway openingPeak inspiratory flow^at 2.0 liter per second on ventilatorPULMPresPtRespiratory system.airway opening

Frequently asked questions

Code details

Code20045-1

SystemLOINC

Display namePeak inspiratory flow Respiratory system airway opening --at 2.0 liter per second on ventilator

DescriptionPeak inspiratory flow^at 2.0 liter per second on ventilator

Short namePmax @ 2.0 L/s on vent Airway opening

ComponentPeak inspiratory flow^at 2.0 liter per second on ventilator

PropertyPres

TimingPt

System (specimen)Respiratory system.airway opening

ScaleQn

ClassPULM

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.27

Part names

Peak inspiratory flow^at 2.0 liter per second on ventilatorPresPtRespiratory system.airway openingQnPressurePoint in time (spot)Respiratory system airway opening

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.