Angioplasty – Procedure, Uses and Risks
Angioplasty is a minimally invasive procedure used to widen narrowed or blocked blood vessels. It is most commonly performed on the coronary arteries of the heart.
Things worth knowing about "Angioplasty"
Angioplasty is a minimally invasive procedure used to widen narrowed or blocked blood vessels. It is most commonly performed on the coronary arteries of the heart.
What Is Angioplasty?
Angioplasty (also called balloon angioplasty or percutaneous transluminal angioplasty) is a medical procedure used to open narrowed or blocked blood vessels by inserting a thin, flexible tube called a catheter with a small balloon at its tip. The term derives from the Greek words angeion (vessel) and plassein (to shape). It is considered a minimally invasive alternative to open vascular surgery and is a cornerstone of interventional cardiology.
How Does Angioplasty Work?
During the procedure, a catheter with a deflated balloon is guided through a blood vessel – usually accessed via the groin (femoral artery) or the wrist (radial artery) – to the site of the blockage. Once in position, the balloon is inflated to compress the plaque buildup against the vessel wall, restoring normal blood flow.
Stent Placement
In most cases, a stent – a small mesh tube – is inserted after balloon inflation to keep the vessel open and reduce the risk of re-narrowing (restenosis). Drug-eluting stents are coated with medication that is slowly released to further prevent restenosis.
When Is Angioplasty Used?
Angioplasty is used to treat conditions caused by narrowed or blocked arteries, including:
- Coronary artery disease (CAD): Narrowing of the heart arteries leading to angina or heart attack.
- Acute myocardial infarction (heart attack): As an emergency procedure to restore blood flow quickly.
- Peripheral artery disease (PAD): Blockages in the leg arteries.
- Renal artery stenosis: Narrowing of the arteries supplying the kidneys.
- Carotid artery stenosis: Narrowing of the neck arteries, which increases stroke risk.
Procedure and Preparation
Before the procedure, imaging studies such as a coronary angiogram are performed to identify the exact location and severity of the blockage. The patient receives blood-thinning medications to prevent clot formation during the procedure. The intervention itself is carried out under local anesthesia with X-ray guidance and typically takes between 30 minutes and two hours.
Risks and Side Effects
Angioplasty is a well-established procedure with a generally high safety profile. However, potential risks include:
- Vessel injury at the access site
- Bleeding or bruising
- Allergic reaction to the contrast dye
- Kidney problems related to the contrast agent
- Re-narrowing of the treated vessel (restenosis)
- In rare cases: heart attack, stroke, or vessel closure during the procedure
Aftercare and Prognosis
After the procedure, patients are typically monitored in hospital for several hours to a few days. Blood-thinning medications such as antiplatelet agents (e.g., aspirin and clopidogrel) are usually prescribed for several months to prevent stent thrombosis. Regular follow-up appointments and a heart-healthy lifestyle are essential for long-term success.
References
- Levine GN et al. - 2011 ACCF/AHA/SCAI Guideline for Percutaneous Coronary Intervention. Journal of the American College of Cardiology, 2011.
- Neumann FJ et al. - 2018 ESC/EACTS Guidelines on myocardial revascularization. European Heart Journal, 2019.
- World Health Organization (WHO) - Cardiovascular diseases: Fact sheets and clinical guidelines. WHO, 2023.
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