Determination of the Best Predictor for Correct Baska Mask Size
Conditions
Keywords
mask size, Baska mask, supraglottic airway, airway management
Brief summary
The investigators group has performed a number of studies on novel airway devices, including an observational study on the performance of a new supraglottic airway named Baska mask. In this new study the investigators wish to determine which criteria best predict the correct size of the Baska mask to be used in male patients
Detailed description
Our observational study of the performance of the Baska mask suggests that this novel supraglottic airway has promise as an alternative to the current standard device, the laryngeal mask airway (LMA). Our results indicate that while the manufacturer weight criteria work reasonably well in females this may not be the case in males. The investigators wish to determine how well the manufacturer recommended sizing criteria for the Baska mask work in males. This study is designed to determine which criteria best predict the correct size Baska mask to use in male patients. In addition the investigators will monitor the performance and safety of this device (insertion success rate, seal pressures, time to and ease of insertion, failure rate, complications etc)
Interventions
use of Baska mask as component of standard general anaesthetic
Sponsors
University College Hospital Galway
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
MALE
Age
16 Years to 85 Years
Healthy volunteers
No
Inclusion criteria
* Male * Written informed consent * ASA 1-3 * No relevant allergies * Body-mass index (BMI) 20-35 * Age 16-85 * Non-urgent surgery of planned duration 0.25-4 hrs
Exclusion criteria
* Inability of patient/parent to understand or consent for the trial * Neck pathology * Previous or anticipated problems with the upper airway or upper GI tract (reflux, hiatus hernia, oropharyngeal tumour, upper respiratory tract infection in the last 10 days) * BMI \> 35 * Predicted or previously documented difficult airway * Increased risk for Gastric Aspiration * Current participation in another Clinical Study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Determination of the best predictor for successful Baska mask size | From the moment of preoperative assessment until the moment of mask placement, an expected average of 3 hours. | We will evaluate the correlation between certain patient characteristics (including, but not limited, to actual and ideal body weight; height) and the size of the Baska mask used successfully in each patient. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| device airway leak pressure | within 30 min of anaesthesia commencement | — |
| device insertion time | within 30 min of anaesthesia commencement | the time from the moment the device is touched until successful ventilation is achieved or device is removed. |
| insertion success rate of the device | within 30 min of anaesthesia commencement | — |
| complications | from the moment anaesthesia commenced up to the first postoperative day, an expected average of 30 hours. | Complications during insertion, maintenance and removal and in the postoperative period (in PACU and next day follow up) List of complications (not exhaustive): desaturation episodes, loss of airway with need to manipulate mask/switch to alternative device, lip/teeth damage, regurgitation, aspiration, laryngospasm, blood staining on mask removal) |
| Patient comfort | from the moment patient awake up to third postoperative day, an expected average of 80 hours. | We will record throat pain, dysphonia and dysphagia using 10 point verbal rating scale. |
| ease of insertion of device | within 30 min of anaesthesia commencement | we will use 10cm visual analogue scale |
Countries
Ireland
Outcome results
None listed