Presence of left-sided automatic implantable cardioverter-defibrillator/pacemaker, endotracheal tube, nasogastric tube, right internal jugular central venous catheter, sternotomy wires, and mediastinal clips without change from prior study.
Suboptimal nasogastric tube (Present) Pacemaker (Present) Suboptimal central line (Present) Suboptimal endotracheal tube (Present)