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Brachial Artery (Human Anatomy): Image, Functions, Diseases and Treatments

Last Updated: Mar 18, 2023

Brachial Artery

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The brachial artery is the primary blood vessel supplying the upper arm and elbow joint muscles. It is frequently used to test blood pressure. Since the brachial artery is close to the skin's surface, it is susceptible to injury from traumatic events such as arm fractures.

What is the brachial artery?

The brachial artery is a major blood vessel that supplies the arm and hand with oxygenated blood from the heart. This artery is an extension of the axillary artery, a branch of the subclavian artery. At the elbow, the brachial artery splits into two smaller arteries, the radial artery and the ulnar artery. These tiny arteries supply the wrist and hand with blood. On the inside of the elbow, where it is rather superficial and easy to identify, the brachial artery can be palpated. It is frequently used as a pulse point for measuring blood pressure.

Where is the brachial artery located?

The brachial artery runs across the upper arm. It starts at the elbow and branches from the axillary artery, which is an extension of the subclavian artery. The brachial artery runs from the elbow down the inside of the upper arm to the shoulder. It is relatively shallow and can be sensed by pressing on the inside of the elbow. The brachial artery is accompanied in the upper arm by several key nerves and muscles, and it is close to the skin's surface, making it reasonably straightforward to detect and access.

How is the brachial artery structured?

  • The brachial artery is a major blood channel that transports oxygenated blood from the heart to the arm and hand. It is a lengthy, tube-like structure with tissue walls that are made up of numerous layers.
  • The innermost layer of the brachial artery's blood vessel is lined with the smooth, specialized cells known as endothelium. The endothelium helps control how blood flows through the vessel and keeps blood from clotting.
  • The tunica media is the next layer of the brachial artery. It is a relatively thick layer of smooth muscle and connective tissue. By contracting or relaxing in response to different stimuli, the tunica media helps control the flow of blood through the vessel.
  • The brachial artery has a layer of connective tissue called the tunica adventitia that protects and facilitates the blood vessel. There are nerve fibres, blood vessels, and other structures in the tunica adventitia that help keep the artery healthy and working.

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Brachial Artery Functions

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  • The main blood vessel supplying the arm and hand is the brachial artery. It transports oxygenated blood from the heart to these areas of the body's tissues, giving them the oxygen and nutrients they require to be healthy. By contracting or dilating in response to variations in blood flow and pressure, the brachial artery also contributes to the blood pressure control in the arm and hand.
  • Healthcare practitioners use the brachial artery in addition to its role in circulation to evaluate a patient's blood pressure and cardiovascular health. A healthcare professional can evaluate the strength and stability of the pulse at the brachial artery, which might be a sign of the cardiovascular system's general health.
  • Additionally, the brachial artery is utilised for certain medical treatments like angiography, which involves injecting a particular dye into the artery to see the blood arteries in the arm and hand.

Brachial Artery Conditions and Disorders

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  • Aortic dissection: A rupture in the aortic wall, the largest and most important blood channel that transports blood from the heart to the other parts of the body. The brachial artery and other aortic branches are vulnerable to aortic dissection.
  • Embolism: The medical term for when a blood clot or any other foreign object lodges in the brachial artery and prevents blood flow there is called an embolism.
  • Endarteritis: Endarteritis, also known as inflammation of the inner layer of the brachial artery, can lead to the artery narrowing or blocking.
  • Vasculitis: Inflammation of the blood vessels, especially the brachial artery, which can lead to the blood vessels becoming more constricted or perhaps closed off entirely.
  • Raynaud's disease: Raynaud's disease is a condition in which the blood vessels, notably the brachial artery, narrow abnormally in reaction to exposure to cold or stress, hence limiting blood supply to the areas that are affected by the condition.
  • Thromboangiitis obliterans: Thromboangiitis obliterans is an uncommon condition that involves inflammation and constriction of the blood arteries, particularly the brachial artery, as a result of the production of blood clots.
  • Atherosclerosis: Plaque builds up in the brachial artery, thickening and narrowing its walls. This reduces blood flow and increases heart attack and stroke risk.
  • Thrombosis: Blood clots in the brachial artery can impede blood flow and raise the probability of a heart attack or stroke.
  • Dissection: A crack in the brachial artery's wall, which might result in significant problems and blood leakage into the surrounding tissue.
  • Aneurysm: An aneurysm is a protrusion or swelling that may develop in the brachial artery's wall as a result of vessel wall thinning. Aneurysms may increase the chance that they may rupture, which might result in dangerous consequences.

Brachial Artery Tests

  • Brachial artery ultrasound: The brachial artery is imaged and its blood flow is assessed using sound waves in this procedure. It may be used to identify disorders like peripheral artery disease (PAD) or to track therapy success.
  • Angiography: In this procedure, a contrast dye is injected into the brachial artery and X-ray pictures are taken to view the artery and any obstructions or problems. It has the potential to assess or monitor PAD or other disorders impacting the brachial artery.
  • Doppler ultrasound: This technique measures circulation of blood in the brachial artery using sound waves. It may be used to detect or track disorders such as PAD, as well as to measure therapy efficacy.
  • Pulse oximetry: The oxygen levels in the blood are measured using a tiny sensor put on the fingertip or earlobe. It may be used to evaluate the flow of blood in the brachial artery and identify any obstructions or anomalies.
  • Tension test: This test includes putting pressure to the artery in order to evaluate its pliability and elasticity. It may be used to diagnose, monitor, or evaluate the efficacy of therapy for illnesses such as PAD.
  • ABI (ankle-brachial index) test: This test is used to compare the blood pressure in the ankle to that in the arm (usually the brachial artery). It is useful for diagnosing and monitoring disorders such as PAD.
  • Arterial pressure measurement: This test includes inserting a tiny catheter into the brachial artery in order to assess the pressure within the artery. It may be employed to diagnose, monitor, or evaluate the efficacy of therapy for illnesses such as PAD.

Brachial Artery Treatments

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  • Endarterectomy: During this surgery, plaque or other things are taken out of the inner lining of the brachial artery. It can be used to heal PAD and other conditions that cause artery blockages.
  • Angioplasty: With angioplasty, a balloon catheter is used to open up a blocked or narrowed brachial artery. A stent can also be put in the artery to keep it open. Angioplasty is commonly used to cure PAD or other ailments that cause the blood flow in the brachial artery to slow down.
  • Atherectomy: Atherectomy is a procedure in which plaque or other material is removed from the inner part of the brachial artery with the help of a tool. It can be used to treat PAD and other conditions that cause artery blockages.
  • Thrombolysis: Medications that dissolve blood clots in the brachial artery are injected as part of this therapy plan. Its potential applications include the treatment of artery clots and the unblocking of blood vessels.
  • Arterial bypass surgery: Bypass surgery on the brachial artery reroutes blood flow around the blocked section. It has potential for application in the treatment of peripheral artery disease and similar disorders.
  • Endovascular stenting: In order to unblock or expand a constricted brachial artery, a tiny metal mesh tube (stent) is inserted into the blood vessel from the outside. It has the potential to be employed in the treatment of peripheral arterial disease and similar disorders.
  • Arterial embolization: When performing this technique, a chemical is injected into the brachial artery. This prevents blood from flowing to a certain location of the body. Either to treat an aneurysm, which is a bulging in the arterial wall, or to halt bleeding due to an accident or another ailment, it could be utilised.
  • Arterial ligation: Arterial ligation is a kind of surgery that includes clamping or tying up a blood artery in order to halt the blood flow through the vessel. An aneurysm may be treated with it, and it can also be used to stop bleeding caused by an accident or another ailment.
  • Atherectomy: Atherectomy is a surgery that removes plaque or other debris from the inside of the brachial artery. This operation may be performed using a laser or another equipment. It treats PAD and other artery-blocking disorders.
  • Thrombectomy: Thrombectomy removes a brachial artery blood clot. It may cure an arterial clot or recover blood flow in a blockage.

How can I keep my brachial artery healthy?

Several measures can be taken to preserve the health of the brachial artery as well as other blood vessels:

  • Eat a nutritious diet: A diet rich in fruits, veggies, whole grains, and lean proteins can lower the likelihood of developing peripheral artery disease (PAD) or other vascular diseases.
  • Regular exercise can help your brachial artery and other blood vessels stay healthy by improving blood flow, lowering blood pressure, and keeping you at a healthy weight.
  • Don't smoke: Smoking hurts the lining of the blood vessels and ends up making PAD and other conditions that affect the brachial artery more likely.
  • Maintain a healthy weight: Being overweight or obese could perhaps increase your likelihood of PAD and other conditions that affect the brachial artery.
  • Managing your blood pressure and cholesterol is important since these diseases can raise your risk of PAD and other brachial artery conditions.
  • Get checkups on a regular basis: Getting checkups and screenings on a regular basis will help uncover any possible problems with the brachial artery or other blood arteries before they become significant problems.

In order to maintain a healthy brachial artery and other blood arteries, you should follow these instructions.

When should I call my doctor?

If you are experiencing any symptoms or difficulties related to your brachial artery, it is critical that you seek medical assistance as soon as possible. You need to make an appointment with your primary care physician if you suffer any of the symptoms listed:

  • Your arm or the upper part of your body may be giving you pain or discomfort: This could be an indication that the brachial artery has some kind of obstruction or other problem.
  • Your arm may be weak or numb if there is less blood flowing to it as a result of a blockage in the brachial artery or another problem.
  • Your arm may feel cold or pallid, which could indicate that the brachial artery is blocked or has another problem, reducing flow of blood to the arm.
  • Swelling or discolouration in your arm: This may be an indication of a brachial artery injury or other problem.
  • A fast or irregular pulse in your arm could indicate a problem with blood supply in the brachial artery.

Brachial Artery Medicines

  • Steroids for reducing inflammation of Brachiocephalic Vein: Prednisone, methylprednisolone, and hydrocortisone may lessen brachiocephalic vein swelling.
  • Analgesics for pain in Brachiocephalic Vein: Acetaminophen, nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen and naproxen, and opioid painkillers like morphine and oxycodone are significant medications for pain relief in the brachiocephalic vein.
  • Muscle relaxants for stiffness in Brachiocephalic Vein: Brachiocephalic Vein Stiffness: Cyclobenzaprine, carisoprodol, and diazepam are three significant examples of muscle relaxants that may be used to cure brachiocephalic vein stiffness.
  • Antibiotics for infection in Brachiocephalic Vein: Penicillins (like amoxicillin), cephalosporins (like cefazolin), and macrolides (such as azithromycin) are significant examples of antibiotics that can be utilized to treat infections in the brachiocephalic vein.
  • Nutritional supplements for reducing pain in Brachiocephalic Vein: Omega-3 fatty acids, glucosamine, and chondroitin are some nutritional supplements that may be used to relieve pain in the brachiocephalic vein.
  • Supplements for promotion of growth at the time of fracture of Brachiocephalic Vein: Calcium, vitamin D, and protein supplements are crucial medicines for stimulating growth and healing after a fracture of the brachiocephalic vein.
  • Antivirals for treating infection of Brachiocephalic Vein: Acyclovir, valacyclovir, and ganciclovir are significant medications for curing viral infections in the brachiocephalic vein.
  • Chemotherapeutic medicines for Brachiocephalic Vein: Paclitaxel, cisplatin, and doxorubicin are three important chemotherapeutic drugs that may be utilised to treat conditions that affect the brachiocephalic vein.

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Written ByDrx Hina FirdousPhD (Pharmacology) Pursuing, M.Pharma (Pharmacology), B.Pharma - Certificate in Nutrition and Child CarePharmacology
Reviewed By
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Reviewed ByDr. Bhupindera Jaswant SinghMD - Consultant PhysicianGeneral Physician

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