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Aortic Valve Regurgitation Maximum Velocity During Diastole — Doppler

Published: August 9, 2026Updated: August 16, 2026

A Doppler ultrasound measurement of blood moving backward through the aortic valve during diastole, used to assess aortic valve regurgitation.

Quick summary

["This measurement helps evaluate the severity of blood leaking backward through the aortic valve."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
20173-1
Short code
AV reg Vmax dias DOP
Synonyms
AV reg Vmax dias DOP
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-doppler
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This is a Doppler echocardiography measurement of the maximum speed of blood moving backward through the aortic valve while the heart relaxes and fills. The result contributes to the assessment of aortic valve regurgitation.

Why might I need this test?

It may be used to evaluate an aortic valve murmur, investigate symptoms such as shortness of breath, fatigue, or swelling, and monitor known aortic valve disease. Your clinician combines this measurement with other echocardiogram findings to determine whether further evaluation or treatment is needed.

How is the test performed?

A technician uses an ultrasound probe over your chest while you lie on your side or in other positions. Sound waves create images of the heart, and Doppler technology measures the speed and direction of blood flow.

How do I prepare for the test?

No fasting or medication changes are usually required for a standard echocardiogram. Wear comfortable clothing and follow any preparation instructions provided by the imaging center.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Diastolic Aortic Regurgitation Velocity

Frequently asked questions

Does this test require radiation?
No. Doppler echocardiography uses ultrasound waves, not radiation.
Is aortic valve regurgitation the same as aortic stenosis?
No. Aortic valve regurgitation means blood leaks backward through the valve, while aortic stenosis means the valve opening is narrowed.
Can I interpret the velocity result on its own?
No. The value must be interpreted with the complete echocardiogram and your clinical history because several factors can affect the measurement.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy