Cardiac catheterization

{
  "id": "MLC-T-ONC-001442",
  "term": "Cardiac catheterization",
  "field": "Oncology and biomedicine",
  "definition": "A procedure used to diagnose and treat some heart conditions. During cardiac catheterization, a flexible tube called a catheter is inserted into a blood vessel in the arm, groin, upper thigh, or neck. The catheter is then guided through the aorta into the heart using a special x-ray machine. A cardiac catheterization may be done to measure blood pressure and oxygen levels in different parts of the heart, to check how well the heart muscle is working, to take a sample of tissue from the heart, or to look for defects in the valves or chambers of the heart. A dye may be injected through the catheter in order to look at blood flow in the heart and to check for blockages in the arteries leading to the heart.",
  "references": [
    "NCI Dictionary of Cancer Terms"
  ],
  "url": "https://mlchart.com/terminology/oncology/cardiac-catheterization/"
}