Renal Subcapsular Hematoma Post Transradial Catheterization

A 66-year-old man with a history of essential hypertension, nonobstructive coronary artery disease, type 2 diabetes mellitus, hyperlipidemia, significant smoking history, and bilateral renal cysts, presenting with substernal chest pain and elevated high-sensitivity troponin (793.5 ng/L).

Transradial percutaneous coronary intervention (PCI) with drug-eluting stent placement in the right coronary artery, including administration of over 8000 units of heparin (two 4000 unit boluses) to achieve an activated clotting time (ACT) of 242 seconds.

Development of right renal subcapsular hematoma and retroperitoneal hemorrhage causing hemodynamic instability.safety