After an angioplasty, it is important to rest and avoid strenuous activity for a few days. Take your prescribed medications, especially blood thinners, exactly as directed. Follow a heart-healthy diet low in saturated fat, salt, and sugar. Maintain regular physical activity once cleared by your doctor and attend all follow-up appointments. Watch for chest pain, swelling, or bleeding at the catheter site, and contact your doctor immediately if any of these occur.