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Topical analgesia before tracheal intubation.
Anaesthesia
|November 1, 1975
Summary
This study introduces a safer topical analgesia technique for tracheal intubation using lignocaine. Spraying the pyriform fossae reduces local analgesic exposure in the lower airway, leading to lower blood lignocaine levels.
Area of Science:
- Anesthesiology
- Pharmacology
Background:
- Local analgesic toxicity is often linked to over-dosage.
- Tracheal intubation requires effective airway analgesia.
Purpose of the Study:
- To describe a novel topical analgesia technique for tracheal intubation.
- To evaluate the safety and efficacy of this new method compared to traditional approaches.
Main Methods:
- A technique involving spraying the pyriform fossae for superior laryngeal nerve block and topical analgesia of the larynx and trachea was developed.
- Venous blood lignocaine levels were measured to assess absorption rates.
Main Results:
- The described method resulted in lower venous blood lignocaine levels.
- Absorption of lignocaine was slower compared to direct tracheal application.
Conclusions:
- This superior laryngeal nerve block technique offers a safer approach to topical analgesia during tracheal intubation.
- The method minimizes excessive local analgesic exposure to the lower airway, reducing toxicity risks.