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A study to compare intubation conditions using the CTrach versus the Bonfils rigid fibrescope and CTrach intubating Laryngeal mask airway
Source of recordUK Clinical Trials Gateway
ISRCTNISRCTN84583320
Date ISRCTN assigned28/09/2007
Local reference number(s)N0084186834
Public titleA study to compare intubation conditions using the CTrach versus the Bonfils rigid fibrescope and CTrach intubating Laryngeal mask airway
Scientific title
AcronymN/A
Disease/condition/study domainSurgery: Intubation
Study hypothesisCompare the airway management devices 'Bonfils' and 'CTrach' with respect to:
1. Time it takes to be placed it successfully in the throat
2. How quickly it helps to successfully place tube in windpipe for patients undergoing general anaesthesia for their operation
Design/methodologyRandomised controlled trial
Research ethics reviewNot provided at time of registration
Countries of trialUnited Kingdom
Participants - inclusion criteria1. Age over 16 years
2. Elective surgery requiring endotracheal intubation
3. ASA status 1-3
4. Airway Mallampati grade 1-3
5. Competency to give informed consent
Participants - exclusion criteria1. Morbid obesity (BMI > 35)
2. Pregnancy
3. Emergency surgery or inadequate starvation period
4. Gastro-oesophageal starvation period
5. Gastro-oesophageal reflux or hiatus hernia
6. Severe respiratory disease
7. Mental incapacity
8. Coagulation abnormalities
9. Oral surgery
Patient information material
Anticipated start date29/09/2006
Anticipated end date01/10/2007
Status of trialCompleted
Target number of participants132
InterventionsPatients are randomly selected to belong to either Bonfils group or CTrach group.

Procedure
In order to ensure that the conditions under which the study is conducted remains the same in all subjects, the following procedure will be followed at induction by the team managing the patient:
1. Pre-oxygenation for 3 minutes
2. Intravenous administration of Fentanyl 1-2 milligrams per kilogram patient weight to all patients
3. Either of two methods of induction of anesthesia with target controlled infusion (TCI) of Propofol to target 3-7 milligrams per ml, then maintenance target (TCI) 2.5-4 micrograms per ml with 50% oxygen and 50% air, or intravenous induction of bolus dose of propofol 2-3mg/ml and then anaesthesia maintained with 50% oxygen, 50% air and sevoflurane
4. Muscle relaxation with intravenous administration of Atracurium 0.5 mg/kg to all patients to aim for T0F with 1/4 for adequate muscle relaxation

Following oxygenation, adequate manual ventilation and assessment for adequate level of anaesthesia and relaxation, the following procedure will then follow:
1. Direct laryngoscopy and airway grading by experienced anaesthetist using Macintosh blade (in absence of anaesthetist to use trial device), and using the modified Cormack and Lehane laryngoscopy grading
2. Call back anaesthetist to insert trial device
3. Pick envelope to identify device
4. Start stop clock at beginning of insertion of device and stop it at time capnograph trace is seen
5. Device insertion after appropriate positioning of subjects head

Parameters to be monitored and recorded:
1. Ctrach group
2. Bonfils fibrescope group
Primary outcome measure(s)Which of the two devices will be successful and quicker in placing the device in throat and placing the tube in windpipe.
Secondary outcome measure(s)To compare the easiness and quality of the windpipe view obtained, to compare performance of consultants and registrars, to find out any relation between conventional scope grading and successful placement of tube in windpipe with both devices.
Sources of fundingThe North and South Bank Research and Development Consortium
Hull and East Yorkshire Hospital Trust
Sponsor nameRecord Provided by the NHSTCT Register - 2007 Update - Department of Health
Sponsor detailsThe Department of Health, Richmond House, 79 Whitehall
London
United Kingdom
SW1A 2NL
Sponsor telephone+44 (0)20 7307 2622
Sponsor fax+44
Sponsor emaildhmail@doh.gsi.org.uk
Sponsor websitehttp://www.dh.gov.uk/Home/fs/en
Contact nameDr PS Venkatesan
Contact detailsAnaesthetics Dept
Hull Royal Infirmary


Hull
United Kingdom
HU3 2JZ
Contact telephone+44 627047
Contact fax+44
Contact emailvenkatesanps@hotmail.com
More informationFor more up-to-date information please go to the ISRCTN link below.
Link to record in ISRCTN RegisterISRCTN84583320
Date last extracted from ISRCTN register17/04/2008
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