Ultrasonographic Evaluation of the Radial and Ulnar Blood Flow After Radial Arterial Cannulation

The aim of this randomized study was to compare the impact of two different radial arterial catheters - 20G and 22G - on the changes of diameter, blood flow and velocity of radial artery and ulnar artery after induction of anesthesia and after cannulation.

Inclusion Criteria:

• The patient who are scheduled for elective surgery and need arterial cannulation

Exclusion Criteria:

• Coronary occlusive disease
• Known or suspected upper extremity peripheral arterial disease
• Coagulopathy
• DM with peripheral neuropathy
• Infection at puncture site