Bedside Ultrasound for Confirmation of Endotracheal Tube Placement in the Emergency Department

This single-center, prospective observational diagnostic accuracy study was conducted in the Emergency Department of Antalya Training and Research Hospital. Adult patients who underwent endotracheal intubation in the emergency department after ethics committee approval were included.

Endotracheal intubation was performed as part of routine emergency care by the most senior emergency medicine resident or an experienced emergency physician. Bedside ultrasound assessment was performed during or immediately after intubation by trained emergency physicians without interrupting or delaying the intubation procedure. The ultrasound examination was performed from the suprasternal notch region to assess the position of the endotracheal tube.

The physicians who performed bedside ultrasound had at least two years of emergency medicine experience and had completed accredited ultrasound training. Before study data collection, they received additional theoretical and practical training focused on ultrasound confirmation of endotracheal tube placement.

Ultrasound findings were compared with capnometric end-tidal carbon dioxide measurement, which was used as the reference method for confirmation of endotracheal tube placement. Ultrasound images were stored in the hospital computer system and reviewed by two qualified, independent radiology specialists. Images or measurements with insufficient quality were excluded from analysis. Agreement between ultrasound assessments was evaluated statistically.

The study aimed to determine whether bedside ultrasound can be used as a rapid, reliable, and practical method for confirming endotracheal tube placement in emergency department patients.

Inclusion criteria

• Patients aged 18 years or older
• Patients who underwent endotracheal intubation in the emergency department as part of routine emergency care
• Patients in whom bedside ultrasound and capnometric end-tidal carbon dioxide assessment were performed for confirmation of endotracheal tube placement

Exclusion criteria

• Patients younger than 18 years of age
• Patients with missing or incomplete study data
• Patients with ultrasound images of insufficient quality for evaluation