Two approaches such as ultrasound (US)-guided and prelocation techniques are possible when the internal jugular vein cannulation is attempted with US. This study is a clinical trial that compares the success rates of both techniques and shows the non-inferiority of the prelocation technique. However, during prelocation technique, rotated screen of the US is used instead of original screen. The angle of rotation is determined by the degree of rotation of US probe where an accelerometer is attached.
Patients scheduled for general anesthesia
Refusal of consent
Patients with cervical spine injuries
Patients with atlanto-axial instability
Patients at risk of increased intracranial pressure