How to avoid phrenic nerve Injury during RF ablations ?
Dr. S. Venkatesan MD
JUNE 15, 2025
Phrenic nerve arises from C3, C4, C5 cervical spinal nerves ,but essentially from C4. In the neck, it runs along the anterior scalene muscle, deep to the pre-vertebral fascia. It Enters the thoracic inlet posterior to the subclavian vein and anterior to the subclavian artery. Does It traverse the Pericardial Space? Contrary to my longstanding belief, I realized just now, the phrenic nerve does enter the pericardial cavity.
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