Skip to content

Pulmonary Vein Maximum Flow Velocity, Systolic and Diastolic — Doppler

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

This echocardiography measurement records blood-flow velocities in the pulmonary veins during the heart's systolic and diastolic phases.

Quick summary

["The test helps assess pulmonary venous blood flow and may help identify abnormalities involving heart filling pressures or valve function."]

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

Key facts at a glance

LOINC
29452-0
Short code
Pulm v Vmax sys/dias DOP.der
Synonyms
Pulm v Vmax sys/dias DOP.der
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-derived
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 measurement performed during an echocardiogram. It measures the speed of blood returning from the lungs to the left side of the heart.

Why might I need this test?

It may be used to evaluate how well the left side of the heart fills and empties, assess certain valve problems, or investigate symptoms such as shortness of breath, swelling, or reduced exercise tolerance.

How is the test performed?

A technician places an ultrasound probe on your chest and records Doppler signals from the pulmonary veins. The velocities are recorded during systole, when the heart contracts, and diastole, when the heart relaxes.

How do I prepare for the test?

No special preparation is usually needed. Wear comfortable clothing, and follow the clinic's instructions about eating, medications, and other tests performed with the echocardiogram.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal pulmonary vein flow patterns may occur with impaired left-heart filling, elevated left atrial pressure, or certain valve abnormalities. Reduced or unusual diastolic flow can be associated with worsening heart function. The findings are interpreted together with the rest of the echocardiogram and the person's symptoms and medical history.

Short name

Pulmonary vein Doppler

Frequently asked questions

Is this the same as a pulmonary artery blood test?
No. It is an ultrasound measurement of blood flow in the pulmonary veins, not a blood sample test.
Does the test require a needle or radiation?
No. It uses sound waves through a handheld probe and does not involve a needle or ionizing radiation.
Will I need to hold my breath during the test?
You may be asked to breathe quietly or briefly hold your breath so that the movement and blood-flow signals can be recorded accurately.
  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