<s>[INST] I have on and off again ankle and leg swelling after a cardiac cath-----this has been going on for 3 years now. The cardiac cath found one vessel that that put a balloon into but no stints. I never had this problem before the cath. They had to shock me twice during the cath because they said i had an allergic reaction to the dye. I thing they did not position the dye needle properly and when they injected they cause the defib and afib. Now my ankles swell on and off all the time. [/INST] Helloif cardiac catheterization is done, either radial artery or femoral artery in groin are used to insert the catheter.it is unlikely that ankle swelling is related to procedure, if dye leaks it stays in upper thigh and secondly, why both sides' ankle would swell?. No, the common cause of ankle swelling or edema may be secondary to congestive heart disease and other causes for which you may consult a heart interventional cardiologist and orthopedic surgeon. Get your kidney function tests like GFR, serum Na and K levels Serum creatinine, GOT and SGPT of liver etc. done. Ths may be asked for by your attending doctor best wishes </s>