“…Central venous occlusion in pacing patients is often asymptomatic [80][81][82][83][84] due to development of an adequate venous collateral circulation but can cause more difficulties in patients needing of device revision/upgrade/extraction requiring advanced tools and more time [80][81][82][83][84]. Several pacing venous occlusions have also been described including superior vena cava (SVC) occlusion [84][85][86][87], subclavian vein occlusion [88,89], axillary vein occlusion [90], inferior vena cava (IVC) occlusion [91], subtotal innominate vein occlusion [92], and internal jugular vein occlusion [93]. Moreover permanent pacemaker-related upper extremity deep vein thrombosis has been found [94] having risk factors like diabetes, most frequently, followed by smoking, hypertension, obesity with body mass index ≥30, history of acute myocardial infarction, chronic obstructive pulmonary disease and history of congestive cardiac failure (15%) and responding to anticoagulation therapy while antiplatelets were not found protective [94].…”