Complex coronary angioplasty is a term used when trying to balloon and stent blockages of the heart arteries that are:
1) heavily calcified (calcium in the arteries makes delivering balloons and stents to the narrowed segment of the artery more difficult)
2) chronically occluded (completely blocked which increases difficulty of the angioplasty procedure)
3) very tortuous (artery has steep bends – this makes delivering balloons and stents to the narrowed segment of the artery more challenging)
4) narrowing involves the origin of the main arteries or if the narrowing is involving almost the entire length of the artery.
The angioplasty can be done via the groin or wrist with a high success rate although specialised equipment and greater technical skill may be required.