Ultrasound in Evaluation of Difficult Airway Management Predictive Indexes
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Airway Complication of Anesthesia
- Sponsor
- University of Roma La Sapienza
- Enrollment
- 200
- Locations
- 1
- Primary Endpoint
- ultrasound assessment
- Status
- Completed
- Last Updated
- 7 years ago
Overview
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
Investigators
Francesco Alessandri
Principal investigator
University of Roma La Sapienza
Eligibility Criteria
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.
Outcomes
Primary Outcomes
ultrasound assessment
Time Frame: 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.