LOINCActiveObservation

LOINC Code 78177-3: Aortic valve Mean regurgitant pressure gradient during diastole by US.doppler+Calculated by simplified Bernoulli

78177-3 is a LOINC code used to identify Aortic valve Mean regurgitant pressure gradient during diastole by US.doppler+Calculated by simplified Bernoulli 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 Regurgitant pressure gradient.diastole.mean. It is commonly used with the system or sample type Aortic valve.

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 Regurgitant pressure gradient.diastole.mean. It is commonly used with the system or sample type Aortic valve.

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
  • Order vs observation: Observation
  • Method: US.doppler+Calculated by simplified Bernoulli

What it does not mean

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

Key facts

  • Aortic valve Mean regurgitant pressure gradient during diastole by US.doppler+Calculated by simplified Bernoulli
  • Regurgitant pressure gradient.diastole.mean
  • AO; AoV; AV; Average; Avg; Calc; Calculation; CARD.US; Cardio; Cardiology; Dias; Diast; Diastoli; DOP; DUPLEX; Echography; Grad; Gradient dia; Heart Disease; Mean grad dia; Mean press grad dias; Mean regurg press gradient dia; Point in time; Press grad; QNT; Quan; Quant; Quantitative; Random; Simp Bern; Sonogram; Sonograph; Sonography; ULS; Ultrasound

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

Aortic valve Mean regurgitant pressure gradient during diastole by US.doppler+Calculated by simplified BernoulliAV Mean reg press grad dias Simp BernRegurgitant pressure gradient.diastole.meanCARD.USPressDiffPtAortic valve

Frequently asked questions

Code details

Code78177-3
SystemLOINC
Display nameAortic valve Mean regurgitant pressure gradient during diastole by US.doppler+Calculated by simplified Bernoulli
DescriptionRegurgitant pressure gradient.diastole.mean
Short nameAV Mean reg press grad dias Simp Bern
ComponentRegurgitant pressure gradient.diastole.mean
PropertyPressDiff
TimingPt
System (specimen)Aortic valve
ScaleQn
MethodUS.doppler+Calculated by simplified Bernoulli
ClassCARD.US
Example unitsmm Hg
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.67

Part names

Regurgitant pressure gradient.diastole.meanPressDiffPtAortic valveQnUS.doppler+Calculated by simplified BernoulliMean regurgitant pressure gradient during diastolePressure DifferencePoint in time (spot)Ultrasound.doppler.derived.simplified Bernoulli

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.