Efficacy of Alkalinized Lidocaine in the Endotracheal Tube Cuff on

Status Completed

Clinical Trial Summary

This study is designed to compare the efficacy of endotracheal tube cuffs pre-filled with alkalinized lidocaine on the:

- incidence of coughing during emergence of general anesthesia

- time needed for emergence following a desflurane-based anesthesia

- incidence of sore throat after extubation.

The investigator's hypothesis is that the use of endotracheal tube cuffs pre-filled with alkalinized lidocaine will reduce the incidence of coughing by 50% relative to a control group following a desflurane-based anesthesia.

Clinical Trial Description

Emergence is an important period of general anesthesia during which several problems can occur. Coughing, hypertension, tachycardia and agitation have been observed during emergence of general anesthesia.

Desflurane is a newer volatile agent allowing early recovery from anesthesia. This agent has led to earlier discharge and more rapid resumption of normal activities after surgery. However, an incidence of coughing around 70% has been reported after a desflurane-based anesthesia. Different techniques and drugs have been studied to reduce coughing during emergence.

Among others, the role of lidocaine given intravenously, topically, or intracuff has been studied. Intracuff lidocaine has been shown to increase the tolerance to the endotracheal tube without reducing the swallowing reflex. However, lidocaine slowly diffuses across the tube's cuff. The addition of bicarbonates is required to increase its diffusion to the underlying tracheal tissue. Alkalinization of lidocaine allows the diffusion of 65% of its neutral base form over a period of 6 hours.

In vitro studies have demonstrated that the optimal time for local anesthetic diffusion through the cuff may vary from 90 to 180 minutes. Due to its low onset, this technique would be appropriate for long-duration surgeries. Pre-filling the endotracheal tube cuffs with alkalinized lidocaine at least 90 minutes before intubation could be appropriate for surgeries expected to last less than two hours.

This study will assess the efficacy of pre-filling endotracheal tube cuffs with alkalinized lidocaine to prevent coughing during emergence in short-duration surgeries. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Prevention

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT01715688
Study type	Interventional
Source	Centre hospitalier de l'Université de Montréal (CHUM)
Contact
Status	Completed
Phase	N/A
Start date	January 2013
Completion date	April 2014

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Efficacy of Alkalinized Lidocaine in the Endotracheal Tube Cuff on the Incidence of Coughing During Emergence

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms