This indicator measures the total number of patients that underwent a cardiac surgery or procedure. This indicator is reported by priority level. Patients are assigned a priority level for the surgery based on their clinical assessment. The indicator is reported based on the institution where the surgery took place.

There are three cardiac surgeries or procedures reported Online:

1.A diagnostic cardiac catheterization (CATH), or angiography, is a catheter based diagnostic test that involves selectively injecting x-ray contrast dye into one or more coronary arteries in order to visualize blockages in the arteries and vessels that supply blood to the heart.

2.A percutaneous coronary intervention (PCI), or angioplasty, is a procedure that involves using a catheter to insert a stent that opens blocked blood vessels in the coronary arteries.

3.Coronary artery bypass graft (CABG) is a surgical procedure performed on patients with coronary artery disease to bypass areas of blockage. Blood vessels, most commonly from the legs or chest wall, are grafted onto the heart to allow blood to flow past diseased heart vessels.

This indicator measures the rate, per 100 patient discharges, of unplanned returns to a hospital within 30 days of discharge. It includes medical patients who were hospitalized for non-surgical treatment, and patients who had surgery while in hospital. A lower rate is better.