Prolonged sinus node dysfunction caused by obstruction of the sinus node artery occurring during coronary stenting

Area of Science:

• Cardiology
• Interventional Cardiology
• Electrophysiology

Background:

• Coronary artery stenting is a common procedure for treating coronary artery disease.
• Proximal right coronary artery lesions are frequently treated with stenting.
• Sinus node dysfunction can manifest as bradycardia and syncope.

Observation:

• A patient undergoing coronary stenting for a proximal right coronary lesion experienced an unexpected complication.
• Accidental occlusion of the sinus node artery was identified as the cause.
• The patient developed prolonged sinus node dysfunction following the procedure.

Findings:

• The sinus node artery, crucial for heart rhythm, was inadvertently compromised during stenting.
• This occlusion led to sustained impairment of the sinus node's function.
• The case demonstrates a direct link between iatrogenic sinus node artery occlusion and subsequent dysfunction.

Implications:

• This case underscores the importance of meticulous technique during coronary stenting, particularly in the right coronary artery.
• Awareness of potential sinus node artery injury is critical for interventional cardiologists.
• Preventive strategies and prompt recognition of this complication are essential for patient outcomes.