Ultrasound in Evaluation of Difficult Airway Management Predictive Indexes

Completed

• Conditions: Airway Complication of Anesthesia

• Registration Number: NCT03592758
• Lead Sponsor: University of Roma La Sapienza

Brief Summary

evaluate the efficacy of the ultrasound approach in predicting difficult mask ventilation in a heterogeneous population of patients undergoing general anesthesia.

Detailed Description

Preoperative ultrasound of the upper airway and detection of 5 ultrasound measurements:

Trachea-skin distance at the level of the thyroid isthmus; Trachea-skin distance at the jugular level Front commissure-skin distance; Distance from skin to the thyroid membrane Distance between hyoid bone and skin. Comparison of this measurement with HAN-scale for prediction of difficult mask ventilation during general anesthesia

Study Timeline

• Study Start: 2017-06-01
• Primary Completion: 2018-06-10
• Study Completion: 2018-06-14
• Study First Submitted: 2018-06-19
• Status Verified: 2018-07
• Study First Submitted QC: 2018-07-17
• Last Update Submitted: 2018-07-17
• Study First Posted: 2018-07-19
• Last Update Posted: 2018-07-19

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 200

Inclusion Criteria

• all patient > 18years old undergoing general anesthesia for elective surgery

Exclusion Criteria

• Patients with fractures of the bones of the facial mass;
• Patients with laryngeal tumors
• Patients previously undergoing demolition of the larynx or neck;
• Tracheostomized patients;
• Pregnancy;
• Inter-incisive distance <3 cm;
• severely limited cervical mobility;
• Patients who are not given muscle relaxants
• Patient rejection.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
ultrasound assessment	Ultrasound assessment will be performed 30 minutes before induction of general anaesthesia and the mask ventilation evaluation will be performed 3 minutes after induction with ''Han scale".	the association between the ultrasound measurement and the difficulty of mask ventilation measured with the "Han scale". "Han scale" classify mask-ventilation in five grade of progressive difficulty: 0) mask ventilation did not attempt, 1) easy 2) difficult and requiring oral airway 3) very difficult requiring two practitioners 4) unable to mask ventilate.; "Han scale" is the only grading scale available used routinely in anesthesiologic assessment of bag-mask ventilation.

Trial Locations

Locations (1)

Policlinico Umberto I - UNiversità Sapienzadi Roma; 🇮🇹 Roma, Italy