Limited data exists about the effectiveness of the coronary sinus reducer (CSR) device in patients with angina pectoris and atrial fibrillation (AF). This case demonstrates beneficial effects of AF ablation in a patient with CSR. We report four major findings: Rhythm control has a relevant effect on angina pectoris symptoms in patients with coronary artery disease and AF. In these patients, AF ablation should be considered at an early stage. Patients with persistent angina pectoris and CSR may require sinus rhythm for an optimal effect of the device. Selected coronary sinus (CS) interventions can still be performed through the mesh of the CSR device.

中文翻译：

---

心绞痛患者心房颤动消融和冠状窦减压术的有益效果

关于冠状窦减压器 (CSR) 装置在心绞痛和心房颤动 (AF) 患者中的有效性的数据有限。这个案例证明了 AF 消融对 CSR 患者的有益效果。我们报告了四个主要发现： 节律控制对冠状动脉疾病和 AF 患者的心绞痛症状具有相关影响。在这些患者中，应在早期阶段考虑 AF 消融。患有持续性心绞痛和 CSR 的患者可能需要窦性心律才能获得最佳效果。选择的冠状窦 (CS) 干预仍然可以通过 CSR 装置的网状物进行。