Radial artery pseudo aneurysm after percutaneous cannulation using Seldinger technique.

Area of Science:

• Vascular Surgery
• Infectious Diseases
• Critical Care Medicine

Background:

• Peripheral arterial cannulation enables continuous blood pressure monitoring and arterial blood gas analysis.
• Potential complications include thrombosis, embolism, hemorrhage, sepsis, and pseudoaneurysm formation.

Purpose of the Study:

• To report a rare case of delayed radial artery pseudoaneurysm formation.
• To highlight the association between arterial catheterization, subsequent infection, and pseudoaneurysm development.

Main Methods:

• A case report of a 75-year-old male patient requiring mechanical ventilation.
• Insertion and 7-day indwelling of a right radial artery catheter.
• Diagnosis of pseudoaneurysm confirmed via ultrasound and angiogram following signs of infection (MRSA).

Main Results:

• The patient developed a radial artery pseudoaneurysm 12 days after catheter removal.
• The pseudoaneurysm was preceded by skin inflammation and a positive wound swab for methicillin-resistant Staphylococcus aureus (MRSA).
• This represents a rare instance of delayed pseudoaneurysm formation linked to infection.

Conclusions:

• Delayed radial artery pseudoaneurysm can occur following arterial cannulation, particularly when associated with infection.
• Prompt identification and management of infection are crucial to prevent such vascular complications.
• This case adds to the limited literature on infected pseudoaneurysms post-arterial catheterization.