Anatomic Profiles Related to Transesophageal Echocardiographic Probe Insertion: A Retrospective Computed Tomographic...

Area of Science:

• Anatomy
• Medical Imaging
• Cardiology

Background:

• Transesophageal echocardiography (TEE) is a crucial diagnostic tool.
• Understanding the anatomical relationship between the larynx and esophagus is vital for safe TEE probe insertion.
• Probe-related injuries during TEE can occur due to anatomical variations and insertion techniques.

Purpose of the Study:

• To elucidate the anatomical relationship between the larynx and the esophageal inlet.
• To identify structural factors contributing to probe-related injuries during TEE.
• To provide an anatomical basis for improving TEE safety and training.

Main Methods:

• Retrospective observational study utilizing computed tomography (CT) scans.
• Analysis of CT images from 180 patients who underwent intraoperative TEE.
• Measurement of esophageal inlet orientation and retrocricoid space dimensions.

Main Results:

• The esophageal inlet was consistently found to be posterior to the larynx in 99.4% of patients.
• The retrocricoid space was often narrower than the TEE probe diameter.
• Factors like cricoid lamina calcification and vertebral anomalies were noted.

Conclusions:

• The esophageal inlet's posterior position is a key anatomical finding for TEE.
• Specific probe insertion trajectories (5- or 7-o'clock) are recommended when resistance is met.
• These anatomical insights support standardized TEE training and injury prevention strategies.