Arterial Blood Pressure Measurement (Pre-Pump)
This test measures the blood pressure in your artery before it passes through a pump device, often used in specialized medical settings like hemodialysis or cardiac monitoring.
["Blood pressure monitoring helps ensure your circulatory system is functioning safely during certain medical procedures."]
Key facts at a glance
- LOINC
- 72042-5
- Short code
- HOWOFTENWASARTERIALPREPUMPPRESSUREMEASURED
- Synonyms
- —
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- esrd
- 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 Is This Test Done?
Your healthcare provider may order this test if you’re undergoing a procedure that involves blood flow monitoring, such as hemodialysis, cardiac catheterization, or other interventions requiring precise blood pressure tracking. It helps detect any sudden changes that could affect your health.
What to Expect During the Test
You’ll likely have a small needle inserted into an artery in your arm or wrist. A catheter will be placed to connect to the pump device. Blood pressure will be continuously monitored before the pump activates. The process is usually quick and painless, though you may feel a brief pinch from the needle insertion.
Preparation and Care
No special preparation is needed, but inform your doctor about any medications or conditions that might affect blood pressure. After the test, you may need to rest for a short time to avoid complications from the needle insertion.
What the Results Mean
The results provide real-time measurements of your arterial blood pressure before the pump operates. Abnormal readings could indicate issues like low or high blood pressure, blockages, or other circulatory concerns that require medical attention.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This measurement is critical in high-risk patients undergoing procedures that rely on controlled blood flow. It helps prevent complications such as hypotension (low blood pressure), hypertension (high blood pressure), or inadequate perfusion. Your healthcare team uses these readings to adjust treatments or interventions as needed.
Frequently asked questions
How often is this test typically performed during a procedure?
What happens if my blood pressure is unusually low or high during this test?
Can I eat or drink before 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