Ultrasound Guided Superior Laryngeal Nerve Block Compared With Blind Block Technique

Ultrasound Guided Bilateral Superior Laryngeal Nerve Block Compared With Blind Block Technique For Awake Fibre-optic Intubation In Suspected Difficult Intubation

The aim of this study is to evaluate the effect of ultrasound guided technique for block of internal branch of superior laryngeal nerve in surgical patient in comparison to blind anatomical technique.

Airway anesthesia is pivotal for successful awake intubation provided either topically or by nerves blocks. Airway blocks are technically harder to perform with more complications possibilities. However, in experienced hands, they can be useful as they provide better intubating conditions.

Inclusion Criteria:

1. American Society of Anesthesiologists ( ASA ) physical status I and II.
2. Age between 40-60 years.
3. Modified Mallampati class III-IV .

Exclusion Criteria:

1. Local pathology of the neck.
2. Bleeding diathesis.
3. Allergy to local anesthetic agent.
4. Intellectual impairment.
5. Psychiatric disease.
6. Body mass index ≥30 kg/m2.