Stent thrombosis, also known as abrupt vessel closure, occurs when an implanted coronary stent causes a thrombotic occlusion. Often, this can lead to myocardial infarction. The high-risk population of abrupt vessel closure involves patients with diabetes mellitus or renal insufficiency. Other predictors include ongoing inflammation and the development of neoatherosclerosis, both of which delay healing after stent implantation.

A myocardial perfusion imaging test is used to assess the blood flow through the heart muscle and is useful in patients experiencing chest discomfort. It is commonly known as a nuclear stress test. Myocardial perfusion imaging (MPI) agents have been researched and developed to aid in early diagnosis of coronary artery disease (CAD) and treatment planning.

Ventricular arrhythmia is a condition where the pumping of the heart ventricles is abnormal. Ventricular arrhythmias produce a broad range of conditions, from premature ventricular complex to ventricular fibrillation. The clinical presentations can vary, from lack of symptoms to cardiac arrest. Cases of ventricular arrhythmias can be lethal, as when presenting with ventricular fibrillation or when caused by myocardial infarction.

Wide complex tachycardia (WCT) is a general term describing a group of conditions that present with an accelerated heart rhythm, specifically a heart rate of more than 100 beats per minute (bpm) and a QRS duration of more than 120 milliseconds. WCT can be loosely divided into 2 types: ventricular tachycardia (VT) and supraventricular WCT (SWCT).

Wolff Parkinson White syndrome, or WPW syndrome, is a condition that occurs when an extra electrical pathway in the heart causes a rapid heartbeat leading to congenital pre-excitation of the heart. In some cases, conduction through this accessory pathway leads to malignant tachyarrhythmias. In a normal heart, electricity is conducted from the atria to the ventricles through the atrioventricular (AV) node.