Out of 100 people who have had a coronary angioplasty for stable angina:

• About 1 or 2 people had a serious bleeding problem from the procedure.
• About 1 to 4 people had damage to a blood vessel from the catheter.
• Fewer than 1 out of 100 people (4 out of 1,000) had emergency bypass surgery.
• Fewer than 1 out of 100 (2 out of 1,000) had a stroke.
• Fewer than 1 out of 100 (1 out of 1,000) died.

These numbers about risks come from problems seen in patients in hospitals.