Routine chest X-ray prior to thyroid surgery: is it always necessary?

Area of Science:

• Anesthesiology
• Thoracic Surgery
• Radiology

Background:

• Preoperative chest X-ray (CXR) is often utilized to detect tracheal deviation before thyroid surgery, despite limited evidence supporting its predictive value for intubation difficulty.
• This study aimed to evaluate the clinical utility of preoperative CXR in assessing tracheal deviation in patients undergoing thyroid surgery.

Purpose of the Study:

• To determine if preoperative chest X-ray findings of tracheal deviation correlate with intubation difficulty in patients undergoing thyroid surgery.
• To assess the overall value of routine preoperative CXR in this patient population.

Main Methods:

• A prospective analysis of 1,000 consecutive patients undergoing thyroid surgery was conducted.
• Patient data, including demographic information, CXR results, anesthesia records, and pathology findings, were reviewed.
• Patients with and without tracheal deviation (TD) on CXR were compared regarding intubation outcomes and other clinical factors.

Main Results:

• Of 689 patients with preoperative CXR, 37% showed tracheal deviation (TD).
• Patients with TD had larger thyroid glands and more tracheal compressive symptoms but did not experience significantly more difficult intubations or attempts.
• Incidental lung findings on CXR led to further investigation in 5% of patients, revealing additional pathology in only 1%.

Conclusions:

• There is no demonstrated correlation between preoperative chest X-ray findings of tracheal deviation and the difficulty of intubation in patients undergoing thyroid surgery.
• Routine preoperative chest X-ray for the sole purpose of identifying tracheal deviation in candidates for thyroid surgery is not clinically warranted.