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Right Upper Pulmonary Vein Doppler Ultrasound — Maximum Velocity and Diameter

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

A Doppler ultrasound that measures blood-flow velocity and vessel width in the right upper pulmonary vein.

Quick summary

["This ultrasound evaluates how blood is flowing through the right upper pulmonary vein."]

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

Key facts at a glance

LOINC
29418-1
Short code
PV-RU Vmax dias DOP
Synonyms
PV-RU 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 ultrasound examination of the right upper pulmonary vein, a blood vessel that carries oxygenated blood from the lungs to the heart. It measures the vessel's maximum blood-flow velocity and diameter.

Why might I need this test?

A clinician may order this measurement to evaluate pulmonary vein blood flow, particularly as part of a heart ultrasound or assessment of a heart condition. It may help identify abnormal flow patterns or changes in the vessel's size.

How is the test performed?

A technician places an ultrasound probe on the chest or uses a cardiac ultrasound probe to visualize the right upper pulmonary vein. Doppler technology measures the speed and direction of blood flow, and the vessel's width is also measured.

How do I prepare for the test?

This test usually requires no special preparation. You may be asked to lie on your side or back, and you should follow any instructions provided for a broader heart ultrasound.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

An abnormal maximum velocity or vessel diameter may indicate altered pulmonary venous blood flow, such as narrowing, obstruction, or increased pressure. The meaning depends on the clinical situation and the other findings on the ultrasound, so results should be interpreted by the ordering clinician.

Short name

Right Upper Pulmonary Vein Doppler

Frequently asked questions

Does this test involve radiation or a needle?
No. Doppler ultrasound uses sound waves and does not expose you to ionizing radiation or require a needle.
Is the test painful?
It is generally painless, although pressure from the ultrasound probe may occasionally be uncomfortable.
Can I have this test if I am pregnant?
Doppler ultrasound can be used during pregnancy when clinically appropriate. The reason for the test and the specific examination protocol should be confirmed with the ordering clinician.
  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