Right Ventricular End-Diastolic Pressure (RVEDP) via Cardiac Magnetic Resonance Imaging (CMR) – Slope Measurement
This test measures how the pressure in your right ventricle changes over time, using advanced imaging to assess heart function. It helps evaluate conditions affecting heart pressure and blood flow.
["This test helps doctors understand how well your heart is handling pressure in the right side of your heart."]
Key facts at a glance
- LOINC
- 93642-7
- Short code
- Proximal RVOT Diam PSAX
- Synonyms
- Proximal RVOT Diam PSAX
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 0
- Ref high
- 4
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- us-d-psax
- CPT
- 84153
- SNOMED
- 39392002
- 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
Why This Test Is Done
Your doctor may recommend this test if you have symptoms like shortness of breath, swelling in your legs or abdomen, or if they suspect conditions like heart failure, pulmonary hypertension, or other cardiac issues. It’s often used alongside other imaging tests to get a full picture of your heart’s health.
How the Test Works
During a cardiac MRI, a specialized imaging technique captures detailed images of your heart’s structure and function. The test measures the slope of pressure changes in the right ventricle, which can indicate how well blood is being pumped and how pressure builds up over time.
Sample Collection and Preparation
No special preparation is needed for this test. You’ll lie still on a table while the MRI machine takes images. You may be given contrast dye to help visualize blood flow, but this is not a blood draw test.
What to Expect During the Test
The MRI process can take 30 minutes to an hour. You’ll hear loud noises (like knocking) from the machine, which is normal. Stay as still as possible to ensure accurate results.
Reference range
Normal: <4.0 ng/mLN/A
No special preparation required. For PSA, avoid sexual activity for 24-48 hours before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
RVEDP Slope Assessment
Frequently asked questions
A normal slope measurement suggests your right ventricle is handling pressure efficiently. Abnormal slopes may indicate issues like heart failure, where the right ventricle struggles to pump blood effectively, or conditions causing increased pressure in the lungs (pulmonary hypertension). Early detection can guide treatment to improve heart function and quality of life.
Will I need to fast before this test?
How long will I need to prepare for this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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