Ultrasound Guided Superior Laryngeal Nerve Block Compared With Blind Block Technique

Ain Shams University

Status: Unknown

Conditions: Airway Complication of Anesthesia

Treatments: Device: ultrasound technique

Study type: Interventional

Funder types: Other

Identifiers

NCT04623645

FMASU MS 19/ 2020

Details and patient eligibility

About

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.

Full description

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.

Enrollment: 60 estimated patients

Sex: All

Ages: 40 to 60 years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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60 participants in 2 patient groups

ultrasound group

Experimental group

Description:

patient using ultrasound technique.probe will be placed over submandibular area, the thyrohoid muscle and thyrohyoid membrane will be identified between greater horn fo hyoid bone and thyroid cartilage , 3 ml of lignocaine will be placed on space between thim and the procedure will repeated on contra lateral side.

Treatment:

Device: ultrasound technique

anatomical blind group

Active Comparator group

Description:

patient using anatomical land mark technique, internal branch of superior laryngeal nerve will be blocked slightly anterior to greater horn of hyoid bone . by 3 ml lignocaine . the procdure will be repeated on contra lateral side .

Treatment:

Device: ultrasound technique