Kearns Sayre Syndrome: Looking beyond A-V conduction

Area of Science:

• Pediatric Cardiology
• Ophthalmology
• Genetics

Background:

• Kayne Sayre Syndrome (KSS) is a rare genetic disorder.
• KSS is characterized by specific clinical manifestations including pigmentary retinopathy and progressive ophthalmoplegia.
• Cardiac involvement, particularly heart block, is a known complication.

Purpose of the Study:

• To report a case of sudden death in a patient with Kayne Sayre Syndrome.
• To emphasize the importance of considering non-heart block related causes of sudden death in KSS patients.

Main Methods:

• Case report of a 15-year-old male diagnosed with KSS.
• Documentation of clinical presentation including pigmentary retinopathy, progressive ophthalmoplegia, and complete heart block.
• Details of pacemaker implantation and subsequent clinical course.

Main Results:

• The patient presented with classic KSS features and complete heart block.
• A transvenous dual chamber pacemaker was successfully implanted.
• The patient experienced sudden death two years post-pacemaker implantation.

Conclusions:

• Sudden death in KSS can occur due to mechanisms other than complete heart block.
• Comprehensive evaluation for diverse etiologies of sudden death is crucial in managing KSS patients.
• Further research into the pathophysiology of sudden death in KSS is warranted.