Efficacy of Coronary Sinus Pacing for Cardiogenic Shock Due to Percutaneous Coronary Intervention-induced Sick Sinus Syndrome: Two Case Reports

• Published in: Internal Medicine Vol. 62; no. 22; pp. 3355 - 3360
• Main Authors: Yokota, Shun, Igarashi, Nobuaki, Doi, Tomofumi
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society of Internal Medicine 15.11.2023; Japan Science and Technology Agency
• Subjects: Atrial Fibrillation; atrial pacing; Cardiac Pacing, Artificial - adverse effects; Case Report; Case reports; Coronary Sinus; coronary sinus pacing; Hemodynamics; Humans; Implants; Internal medicine; Percutaneous Coronary Intervention; Shock, Cardiogenic - etiology; Shock, Cardiogenic - therapy; Sick Sinus Syndrome - therapy; sinus node artery; Ventricle; coronary sinus pacing; sinus node artery; atrial pacing
• ISSN: 0918-2918; 1349-7235
• DOI: 10.2169/internalmedicine.1527-22

We herein report two cases of atrial pacing with coronary sinus (CS) pacing performed to improve hemodynamic instability in cardiogenic shock due to percutaneous coronary intervention (PCI)-induced sick sinus syndrome (SSS). Ventricular pacing alone made it difficult to stabilize hemodynamics due to SSS, which had been caused by the lack of reflow and slow flow of the sinus node artery (SNA) jailed with a stent. Adding atrial pacing with CS pacing may be useful, as in our two cases, where ventricular pacing alone was unable to stabilize hemodynamics.