Effect Of Supraglottic Airway Devices On The Tempromandibular Joint Function Following Prolonged General Anesthesia

Not Applicable

• Conditions: Change of Tempromandibular Joint Function With Supra Glottic Airway Devices
• Interventions: Device: Supra glottic airway devices

• Registration Number: NCT05204914
• Lead Sponsor: Sohag University

Brief Summary

Effect Of Supraglottic Airway Devices On The Tempromandibular Joint function Following Prolonged General Anesthesia

Detailed Description

Supraglottic airway devices (SADs) are used for securing the airway in over 50% of general anesthetics; They are used for both spontaneously \& ventilated patients; They also used as conduits to aid endotracheal intubation when both positive mechanical ventilation ( PMV) \& tradional endotracheal intubation( ETT) have failed

All (SADs) consist of a tube that connected to a breathing circuit or a breathing bag which is attached to a hypopharengeal device that seals air flow to the glottis

There are many types of SADs including I-Gel, intubating laryngeal mask airway (LMA), LMA CTrash and LMA proseal Although considered relatively safe devices; and have many advantages as they are less invasive than EET, less incidence of bronchospasm, don't often require muscle relaxation or neck mobility

There are several potential complications \& disadvantages ; Include temporomandibular joint (TMJ) dysfunction, increases the risk of aspiration, more gas leak \&pollution, less safe in prone postion \& deeper anaethesia is required

This study will investigate (TMJ) dysfunction following the use of a (SAD) during general anesthesia, as There are a number of insertion maneuvers described for (SADs) \[2\] such as a jaw thrust may result in temporomandibular joint (TMJ) dysfunction by anteriorly displacing the mandible . In addition, other factors such as degree of muscle relaxation leading to hypotonicity of jaw muscles and passive mouth opening. In addition, for the duration of the operation the mouth is kept slightly open by a breathing tube may result in (TMJ) dislocation.

The inter-incisor distance will be measured using a Therabite â ruler (ATOS Medical, Nottingham, UK). This has a scale from 0 to 70 mm with 1-mm markings. The accuracy of this type of ruler is1.0 mm. The Therabite ruler was chosen as it routinely used by the investigators for (TMJ) assessment in the maxillofacial clinic.

Study Timeline

• Status Verified: 2021-12
• Study First Submitted: 2021-12-09
• Study First Submitted QC: 2022-01-10
• Last Update Submitted: 2022-01-10
• Study First Posted: 2022-01-24
• Last Update Posted: 2022-01-24
• Study Start: 2022-01-30
• Primary Completion: 2022-06-30
• Study Completion: 2022-12-30

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 60

Inclusion Criteria

Not provided

Exclusion Criteria

1. Patient refusal
2. limited mouth opening(<2 fingers)
3. Facial &upper airway trauma
4. Patients with dentures or who were edentulous (as accurate objective measurements would be difficult to determine)
5. Head and neck surgery (as surgery may influence TMJ function)
6. GITsurgery (as SAD doesn't completely protect air way against aspiration )
7. Pt with preexisting tempromadibular joint dysfunction
8. Duration of anaethesia less than 1 h or more than 4hs-

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Supra glottic airway devices	Supra glottic airway devices	-

Primary Outcome Measures

Name	Time	Method
Change in tempromandibular jiont function	Single measurement Within 24 hours postoperative	The change in inter incisors distance,forword movement\&lat movement of the jow post operative will be measured also any post op pain or difficulty in movement of the jow will be recorded

Secondary Outcome Measures

Name	Time	Method
Other complications of supraglottic airway devices	Intra operative &24hours postoperative	Including aspiration and airway edema