Complications vary by site
Pneumothorax (more common with subclavian)
Arterial puncture (more common with femoral)
Catheter malposition
Subcutaneous hematoma
Hemothorax
Catheter related infection (historically more with femoral)
Catheter induced thrombosis
Arrhythmia (usually from guidewire insertion)<unk>  air embolism (avoid with Trendelenburg position)
Bleeding
Central venous catheterization
External jugular vein cannulation
Intraosseous access
Peripheral IV placement
Pulmonary artery catheter
Ultrasound-assisted peripheral line placement
Arterial line
IV fluid resuscitation