A woman presents with chest pain and shoulder pain. On examination, she is found to have pericarditis with pericardial effusion. This shoulder pain is mediated by:
Superficial cardiac plexus
Deep cardiac plexus
- The pain of pericarditis is mediated by the phrenic nerve.
- The somatic sensation from the pericardium is carried by the somatic afferent fibers of the phrenic nerve.
- The pericardial pain may be referred to the supraclavicular region of the shoulder or lateral neck area (dermatomes C3, C4, and C5).