Slurred Speech After Carotid Endarterectomy: Timeline and Prognosis

Mechanism and Incidence

• Recurrent laryngeal nerve damage occurs in up to 6% of patients, causing hoarseness and voice changes, as reported by the American Academy of Otolaryngology-Head and Neck Surgery 1, 2
• Perioperative stroke occurs in 1.6% to 3.7% of cases within 30 days, according to the Annals of Internal Medicine 3

Critical Red Flags Requiring Immediate Evaluation

• New or worsening slurred speech beyond 24-48 hours postoperatively suggests perioperative stroke, hyperperfusion syndrome, or thrombotic complications, as stated by the Stroke journal 4, 5
• The American Heart Association recommends monitoring neurological status, particularly level of consciousness, speech, and motor function, throughout the perioperative period and documenting within 24 hours before and after surgery 5

Management Implications

• For isolated cranial nerve dysfunction, speech therapy consultation is recommended if symptoms persist beyond 2 weeks, as suggested by the American Academy of Otolaryngology-Head and Neck Surgery 1
• For suspected stroke, immediate CT or MRI imaging, blood pressure management, and neurological consultation are necessary, as recommended by the Stroke journal 4, 5