“…As mentioned in the introduction, the course of central venous catheterization procedures may be complicated by unintentional insertion (or spontaneous displacement) of a CVC into the left SICV or the left IMV [3,8,11,20]. The venography records from CIED implantations analyzed in this study showed two cases of the left IMVs, one of which resulted in an unintentional lead insertion (as described in the text above).…”