# Renal Subcapsular Hematoma Post Transradial Catheterization

## TL;DR

This case report describes the first known instance of a kidney hematoma after a cardiac procedure using the radial artery.

## Contribution

It is the first documented case of renal subcapsular hematoma following transradial catheterization.

## Key findings

- A patient developed a right renal subcapsular hematoma after transradial percutaneous coronary intervention.
- The patient received high-dose heparin during the procedure, which may have contributed to the complication.
- The radial approach is typically considered safer, but this case highlights a rare but serious risk.

## Abstract

In this case report, we describe the first documented renal subcapsular hematoma following transradial cardiac catheterization. Traditionally, this occurs via a transfemoral approach for cardiac catheterization. Initially presenting with chest pain, the patient underwent a successful percutaneous coronary intervention (PCI) via radial approach. This procedure involved the placement of a drug-eluting stent in the right coronary artery via transradial access. The patient received over 8000 units of heparin during percutaneous coronary intervention to achieve an activated clotting time (ACT) of 242 seconds. However, post intervention, the patient's condition became critical, revealing a right renal subcapsular hematoma as the underlying cause of his hemodynamic instability.