Angiography BY.... KHUSH BS CARDIOLOGY KHYBER MEDICAL UNIVERSITY
What is a coronary angiogram? An angiogram is an X-ray image of blood vessels after they are filled with a contrast material. An angiogram of the heart, a coronary angiogram, is the "gold standard" for the evaluation of coronary artery disease (CAD). A coronary angiogram can be used to identify the exact location and severity of CAD.
How is a coronary angiogram performed? Coronary angiography is performed with the use of local anesthesia and intravenous sedation, and is generally not significantly uncomfortable. In performing a coronary angiogram, a doctor inserts a small catheter (a thin hollow tube with a diameter of 2-3 mm) through the skin into an artery in either the groin or the arm. Guided with the assistance of a fluoroscope (a special x-ray viewing instrument), the catheter is then advanced to the opening of thecoronary arteries (the blood vessels supplying blood to the heart).
Contu... Next, a small amount of radiographic contrast (a solution containing iodine, which is easily visualized with X-ray images) is injected into each coronary artery. The images that are produced are called the angiogram. The procedure takes approximately 20-30 minutes. After the procedure, the catheter is removed and the artery in the leg or arm is either sutured, "sealed," or treated with manual compression to prevent bleeding. Often, if an angioplasty orstent is indicated, it will be performed as part of the same procedure.
What does a coronary angiogram demonstrate? Angiographic images accurately reveal the extent and severity of all coronary artery blockages. For patients with severe angina or heart attack (myocardial infarction), or those who have markedly abnormal noninvasive tests for CAD (such as stress tests), the angiogram also helps the doctor select the optimal treatment. Treatments may then include medications, balloon angioplasty, coronary stenting, atherectomy ("roto-rooter"), or coronary artery bypass surgery.
Indication Low ejecton fraction. Poor exceries capacity. Non ST segment elevation acute coronary syndrome with high risk feature. Acute ST segment elevation myocardial infraction. Symptoms of coronary artery disease, such as chest pain (angina). A heart defect you were born with (congenital heart disease). Abnormal results on a noninvasive heart stress test. Other blood vessel problems or a chest injury. A heart valve problem that requires surgery.
Contraindication Coagulopathy. Decompainsated congestive heart faliure. Uncontrolled hypertension. GT haemorrhage. Pregnancy. Inability for patient cooperation. Active infection. Renal faliure. Contrast medium allergy.
Compications Vascular complication related to the arterial puncture site. Allergic contrast reaction. Worsening kideny function. Ventricular tachycardia. Iatrogenic coronary artery dissection. Heart attack Stroke Injury to the catheterized artery