This study aimed to detect tongue edema associated with the pressure exerted by a rigid direct laryngoscope by measuring the tongue area using USG in patients undergoing suspension laryngoscopy (SL) procedures.

Suspension laryngoscopy (SL) is a surgical procedure for both diagnostic and therapeutic purposes. In this procedure, a rigid direct laryngoscope is inserted orally, and the tongue and the base of the tongue are compressed.The tongue is an ideal organ for evaluation with ultrasonography. This study aimed to detect the occurrence of tongue edema through ultrasonography examination due to the rigid direct laryngoscope in SL procedures.

Study group

Inclusion Criteria:

• Patients aged 20 years or older
• Patients who undergo suspension laryngoscope procedure

Exclusion Criteria:

• refusal to participate
• age of <20 years
• history of syndromal craniofacial abnormalities
• occurrence of tongue masses
• history of craniofacial surgery
• history of burns, trauma or radiotherapy involving the head and neck region
• neurologic disorders and patients with obstructive sleep apnea syndrome (OSAS)
• active inflammation in the head and neck region
• cervical rigidity limiting neck flexion and head extension

Control group

Inclusion Criteria:

Patients aged 20 years or older Patients who did not need suspension laryngoscopy and any head and neck procedures

Patients aged 20 years or older who will undergo suspension laryngoscopy procedures or who did not need suspension larygoscopy procedures.

Individual participant data has been planned to share after publishing as a article in a journal.