BACKGROUND: Persistent left superior vena cava (PLSVC) is the most common variant of systemic venous drainage. In the absence of the right superior vena cava (RSVC), implantation of a right ventricular pacing lead may be challenging. Therefore specific implantation techniques and experiences in PLSVC are worth reporting. CASE PRESENTATION: We present a case report of a 90-year-old Caucasian female patient with PLSVC during single chamber pacemaker implantation due to the third-degree atrioventricular block. With common implantation techniques, we did not even reach the right ventricle. Therefore slittable CPS Direct TM Universal sheath was employed to overcome the acute angle from PLSVC to tricuspid valve and ensure more fixation stability for longer 100-cm right ventricular lead placement. CONCLUSION: This case demonstrates safe implantation of 100-cm long right ventricular bipolar active fixation pacing lead using common slittable CPS Direct TM Universal sheath after failed attempts with "C" and "J" stylet shaped electrode. This sheath provides different angle towards tricuspid valve and more fixation stability in patient with PLSVC and absent connection to right atrium.

Centre for Research on Internal Medicine and Cardiovascular Diseases Faculty of Medicine University of Ostrava Syllabova 19 703 00 Ostrava Czech Republic

Department of Cardiology Institute for Clinical and Experimental Medicine Vídeňská 1958 140 21 Prague Czech Republic

Department of Internal Medicine and Cardiology University Hospital Ostrava 17 Listopadu 1790 5 708 52 Ostrava Czech Republic

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