Effects of indirect neck movements of unconscious patients on the performance of the i-gel (a device to keep the breathing passage open in unconscious patients during anesthesia)
Not Applicable
Completed
- Conditions
- Health Condition 1: null- Performance of i-gel in patients under general anesthesia on spontaneous pressure-support ventilation with neutral position of cervical spine and on passive movements of the cervical spine.
- Registration Number
- CTRI/2014/12/005266
- Lead Sponsor
- Medical College Kolkata
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- Not specified
- Target Recruitment
- 60
Inclusion Criteria
Adult patients of ASA I and II physical status, undergoing general anesthesia on spontaneous pressure support ventilation with i-gel supraglottic airway.
Exclusion Criteria
Unwilling patients. Patients with ASA III or worse physical status. Any contraindications to the use of supraglottic airway. History of trauma or surgery or any diseases involving atlanto-occipital joint or cervical spine, or any restriction in active range of movement (AROM) of cervical spine on preoperative examination.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Performance of i-gel supraglottic airway under general anesthesia with spontaneous pressure support ventilation on neck movements. <br/ ><br>(1)Fall in expiratory minute ventilation (L/min) by more than 20% from baseline. <br/ ><br>(2)Leak around i-gel (measured by the difference between set fresh gas flow and measured fresh gas flow).Timepoint: One minute after each passive neck movement.
- Secondary Outcome Measures
Name Time Method (1)Air leak around i-gel (palpable over laryngeal cartilage). <br/ ><br>(2)Audible air leak around i-gel. <br/ ><br>(3)Rise in ETCO2 of more than 5 mmHg from baseline. <br/ ><br>(4)Fall in SpO2 by more than 2% from baseline. <br/ ><br>(5)Visible displacement of the i-gel supraglottic airway.Timepoint: Immediately and one minute after each passive neck movement.