CRT device implantation
Device leads of the CRT system were inserted through sheaths placed in
the right or left subclavian vein under fluoroscopy. Right ventricular
and right atrial leads were fixed in the conventional positions inde-novo CRT implantations. An LV lead was selectively positioned
in one of the CS tributaries. A pulse generator was implanted in the
left or right precordial area. The CRT device implantation or upgrade
procedures were performed under mild or moderate sedation with local and
intravenous anesthetics.