“Cardiac intervention” isn’t a disease—it’s a group of procedures (angioplasty, stent, ablation, etc.). The “symptoms” patients feel are usually post-procedure changes or early warning signs that something went wrong. Knowing the difference between normal soreness and an emergency call is key.

Groin or wrist ache is typical. The access site feels like a deep bruise for a few days; pain that ramps up means bleeding or clot.

Pulsing lump at the puncture spot can appear. A small, soft swelling is normal; a growing, hard mass needs ultrasound check.

Chest pressure that returns is the big red flag. If the same heavy, squeezing pain you had before the procedure comes back, stop and call 911.

Shortness of breath that’s new or worse can signal a clot in the lung or re-narrowing of the artery.

Heart rhythm flutters are common after ablation. Brief skips are expected; sustained racing, dizziness, or fainting are not.

Low-grade fever and night sweats can pop up for forty-eight hours; high fever or chills suggest infection.

Late alarms include a blue or cold hand/foot, black stool, or sudden weakness—clues a clot or bleed has traveled.