What Is the Axillary Vein?
The axillary vein is a major vein located in the underarm (axilla) that carries oxygen-depleted blood from the upper arm, shoulder, and chest back toward the heart. It begins where the basilic and brachial veins join and continues as the subclavian vein.
The axillary vein plays an important role in maintaining healthy circulation throughout the upper extremity.
Why the Axillary Vein Matters
The axillary vein returns blood from the arm to the heart. Problems affecting this vein can reduce circulation, cause swelling, and increase the risk of blood clots or other vascular complications.
Common Conditions Affecting the Axillary Vein
- Deep vein thrombosis (DVT)
- Venous compression
- Thoracic outlet syndrome
- Traumatic injury
- Inflammation of the vein (phlebitis)
- Central venous catheter complications
Common Symptoms
- Arm swelling
- Pain or tenderness
- Visible enlarged veins
- Warmth or redness
- Heaviness in the arm
- Bluish discoloration of the skin
How Are Axillary Vein Disorders Diagnosed?
Healthcare providers diagnose axillary vein conditions using a physical examination, Doppler ultrasound, CT venography, MR venography, blood tests, and other vascular imaging studies when needed.
How Are Axillary Vein Disorders Treated?
Treatment depends on the underlying condition and may include blood-thinning medications, compression therapy, catheter-based procedures, surgery, or treatment of the underlying cause.
How Home Care Can Help
Home care professionals monitor for changes in circulation, encourage medication adherence, assist with mobility, educate individuals about recognizing symptoms of blood clots, and report concerning changes to the healthcare provider.
Home Care Tip
Seek immediate medical attention if you develop sudden arm swelling, severe pain, or discoloration, especially if you have a history of blood clots or a central venous catheter.
Frequently Asked Questions About the Axillary Vein
What does the axillary vein do?
The axillary vein returns blood from the upper arm, shoulder, and chest back toward the heart.
Can a blood clot develop in the axillary vein?
Yes. Although less common than leg blood clots, deep vein thrombosis can occur in the axillary vein and requires prompt medical evaluation.
Can home care help someone with an axillary vein condition?
Yes. Home care professionals monitor symptoms, support prescribed treatments, encourage safe mobility, and help individuals manage vascular conditions at home.
When to Seek Emergency Medical Care
Call emergency medical services immediately if arm swelling is accompanied by chest pain, sudden shortness of breath, coughing up blood, or other signs of a possible pulmonary embolism.