Group | Cases | Pneumothorax | Hematoma | Arterial Injury | Brachial Plexus Sensory Abnormalities | Misplacement into External Jugular Vein | Arrhythmia |
February | 2 | 0 | 0 | 0 | 0 | 0 | 2 |
March | 0 | 0 | 0 | 0 | 0 | 0 | 0 |