Lingual Nerve Injury in Patients With Difficult Intubation

Study Overview
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Brief Summary
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The aim of this study is to investigate the incidence of lingual nerve injury and related factors in difficult intubation cases. Demographic data of difficult intubation cases and body mass indices, thyromental and sternomental distances, mallampati classification, neck circumference, maximum mouth opening be recorded.Numbness of the tongue and metallic taste will be questioned

Detailed Description
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The lingual nerve is the anterior descending branch of the posterior trunk of the mandibular division of the trigeminal nerve. Lingual nerve injury is a recognised complication of orotracheal intubation and has been associated with forceful laryngoscopy. Although left-sided neuropraxia has been reported, right-sided lesions are thought to be more common because the standard Macintosh laryngoscope exerts pressure on the right side of the tongue. Lingual nerve injury following orotracheal intubation was first described in 1971 by Teichner who reported a right-sided neuropraxia which was attributed to direct pressure from the laryngoscope.

Official Title
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Investigation of the Incidence of Lingual Nerve Injury and Related Factors in Patients With Difficult Intubation

Conditions
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Difficult Intubation, Lingual Nerve Injuries

Intervention / Treatment
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* Other: Observational


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All adult patients undergo general anesthesia who have difficulty in intubation will be included in the study. The same number of patients without intubation difficulties will be included in the study as a control group. Exclusion Criteria: Patients who are not intubated under general anesthesia Patients undergoing regional anesthesia or peripheral nerve block Patients with laryngeal mask placed will not be included in the study.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Difficult intubation group<br>An intubation is called difficult if a normally trained anesthesiologist needs more than 3 attempts or more than 10 min for a successful endotracheal intubation. | Other: Observational<br>* No intervention<br>|
| Non difficult intubation group<br>An intubation is called non difficult if a normally trained anesthesiologist needs only one attempt for a successful endotracheal intubation. | Other: Observational<br>* No intervention<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The incidence of lingual nerve injury | The frequency of lingual nerve injury in patients with difficult intubation seen in one year period will be determined. | 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of patients with teeth injuries |  | 1 year | 
| Percentage of patients with oral mucosa injuries |  | 1 year | 
| Percentage of patients with temporary difficulty in swallowing |  | 1 year | 
| Percentage of patients with temporary difficulty in breathing |  | 1 year | 
| Incidence of inability to taste |  | 1 year | 
| Incidence of numbness in the tongue |  | 1 year | 
| Percentage of patients with metallic taste in the tongue |  | 1 year | 
| Rate of emergency tracheotomy |  | 1 year | 
| Incidence of cardiovascular complications |  | 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Difficult intubation, Lingual nerve injury, Body mass index