Coronary Angioplasty & Stenting: Discharge Advice Download PDF, 963KB, PDF Coronary or heart ateries aupply blood to the heart muscles to maintain its vital function. Narrowing of the coronary artery occurs when fatty deposits accumulate on the aterial wall and can cause the following symptoms: Chest or neck discomfort Breathlessness Irregular heart rhythm Fatigue Coronary Angioplasty, also known as Percutaneous Coronary Intervention (PCI), can help to increase blood supply to the heart. Read to find out more about what you should do after being discharged. [Please download the PDF file if you are unable to view the image below.]