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Doctor explains Angiography (Angiogram) | Uses, how it's performed, risks and more

Discover key insights on angiography with Dr. O'Donovan, a UK doctor and YouTuber, as he explains this vital imaging procedure.

July 2, 2025
6 min
Disclaimer

The medical information in this content is for educational and entertainment purposes only. While Doctor O'Donovan Medical Education Limited always aims to provide accurate information, it does not replace professional medical advice from your own doctor or health provider. Always consult your own healthcare professional for medical concerns.

Doctor O'Donovan Medical Education Limited can not provide individual advice. Never ignore professional medical advice from your own health provider because of something you have read or watched here. Educational resources created by Doctor O'Donovan Medical Education Limited are not a substitute for professional medical advice, diagnosis or treatment.

Topic Breakdown

In this video, I delve into the essential topic of angiography, a vital imaging procedure that plays a crucial role in diagnosing and treating various cardiovascular conditions. If you or a loved one has been advised to undergo this test, or if you're simply curious about what it entails, this blog post will provide you with a comprehensive understanding of angiography, its purpose, preparation, procedure, and what to expect afterward.

Angiography is a specialized type of X-ray that allows healthcare professionals to visualize blood vessels in the body. Unlike standard X-rays, angiography employs a contrast dye that is injected into the bloodstream, making the blood vessels visible on the images produced. This technique is invaluable for identifying issues such as narrowed or blocked arteries, aneurysms, and other vascular conditions.

So, why might your doctor recommend an angiography? There are several reasons. This procedure is often used to diagnose conditions like atherosclerosis, which is the narrowing of arteries due to plaque buildup. It can also help assess peripheral arterial disease, which affects blood flow to the legs, and evaluate the presence of blood clots or pulmonary embolisms. Additionally, angiography is crucial for understanding issues related to blood flow to vital organs, including the heart and brain.

Preparation for an angiography is an important step in ensuring the procedure goes smoothly. Before the test, you may be asked to attend a pre-procedure appointment where your medical history will be reviewed, and any necessary blood tests will be conducted. It’s essential to discuss any allergies, particularly to contrast dyes, and to inform your doctor about any medications you are currently taking. If sedation is recommended to help you relax during the procedure, you will need to refrain from eating for a few hours beforehand and arrange for someone to drive you home afterward.

On the day of the angiography, you will change into a hospital gown and lie on an X-ray table. While you will typically remain awake during the procedure, medication may be administered to help you feel more comfortable. A small incision is made, usually in the groin or wrist, and a local anesthetic is applied to numb the area. A thin tube, known as a catheter, is then inserted into an artery and guided to the area being examined. The contrast dye is injected through the catheter, and a series of X-ray images are taken as the dye flows through your blood vessels. You may experience a warm sensation as the dye enters your bloodstream, which is normal and temporary.

In some cases, angiography can also serve a dual purpose, allowing for immediate treatment during the same session. For instance, if a narrowed artery is identified, a procedure called angioplasty may be performed, where a balloon is used to open the artery, or a stent may be placed to keep it open.

After the procedure, the catheter is removed, and pressure is applied to the insertion site to prevent bleeding. Most patients are able to go home the same day, although some may need to stay overnight for observation. It’s important to rest for the remainder of the day and have someone accompany you home. You can resume eating and drinking once you feel ready, and drinking plenty of water will help flush the contrast dye from your system. Expect some bruising and mild soreness at the insertion site, which is completely normal.

While angiography is generally safe, it does carry some risks, as with any medical procedure. Common side effects include bruising or tenderness at the catheter site, which usually resolves on its own. However, more serious complications, such as allergic reactions to the dye, damage to blood vessels, or kidney issues, can occur, albeit rarely. Your healthcare team will discuss these risks with you beforehand, ensuring you are well-informed and comfortable with your decision to proceed.

It’s crucial to know when to seek medical advice after your angiography. If you experience persistent bleeding from the insertion site, severe pain that doesn’t improve with medication, signs of infection such as redness or swelling, or if the limb where the catheter was inserted feels cold or pale, contact your healthcare provider immediately.

I hope this video and blog post have provided you with valuable insights into angiography. If you found this information helpful, please share it with friends and family who may benefit from understanding this important procedure. Your experiences and questions are also welcome in the comments section below, as sharing can help others navigate their own healthcare journeys.

For more detailed information, please refer to the links provided in the description box. Thank you for taking the time to learn about angiography with me, and take care of yourselves and your loved ones.

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