ULTRASOUND EVALUATION OF ANTERIOR NECK SOFT TISSUE THICKNESS TO PREDICT DIFFICULT LARYNGOSCOPY IN OVERWEIGHT ADULT PATIENTS POSTED FOR SURGERY UNDER GENERAL ENDOTRACHEAL ANAESTHESIA - AN OBSERVATIONAL STUDY.
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 90
- 试验地点
- 1
- 主要终点
- -Ultrasonographic measurement of anterior neck soft tissue thickness at 3 levels
研究概览
简要总结
Patients in the age group of 18 to 65 of either sex with BMI above 25 kg / m² who are undergoing elective surgery under general endotracheal anaesthesia will be enrolled for the study with written informed consent. A day before the surgery a thorough preanaesthetic evaluation and assessment of the airway is done using conventional (Modified mallampatti score, thyromental distance, interincisor gap, neck movements and sternomental distance) assesment methods. Then on the day of surgery in the preoperative room ultrasonographic measurement of anterior neck at 3levels: Distance from skin to hyoid bone(DSHB), Distance from skin to anterior commisure of vocal cord (DSAC) and Distance from skin to thyrohyoid membrane (DSTM) at midline will be performed with the patient lying in supine with head and neck in neutral position using Logiq p6 pro ultrasound system manufactured by GE health care
On the day of surgery after connecting the monitors and securing intravenous lines patient is preoxygenated for 3 minutes with 100 % oxygen and premedicated with Inj. midazolam 0.1mg/kg iv and Inj.Fentanyl 1 microgram/kg iv. For intravenous induction Inj. propofol 2 mg/kg will be used. After ensuring adequate ventilation, Inj succinylcholine 1.5 mg/kg will be given to achieve adequate muscle relaxation. All laryngoscopies will be done by experienced anaesthesiologists by macintosh laryngoscope using conventional methods and cooks modification of Cormack Lehane Grading will be assessed. Time taken, number of attempts and any manipulations necessary to intubate will be noted.
Modified Mallampatti classification (MMC).
• Class I is visualization of soft palate,uvula, fauces, and pillars.
• Class II is visualization of softpalate, uvula and fauces.
• Class III is visualization of softpalate and base of uvula.
• Class IV is only hard palate being visible
研究设计
- 研究类型
- Observational
入排标准
- 年龄范围
- 18.00 Year(s) 至 65.00 Year(s)（—）
- 性别
- All
入选标准
- •18 to 65 years old patients of either sex
- •BMI more than 25 kg/ m²
- •ASA physical status grade I to III.
排除标准
- •1.Patients with facial fractures 2.Maxillofacial abnormalities 3.Cervical spinal fracture
- •Arthritis, 5.Pregnancy
- •Emergency cases.
结局指标
主要结局
-Ultrasonographic measurement of anterior neck soft tissue thickness at 3 levels
时间窗: -Ultrasonographic measurement of anterior neck soft tissue thickness at 3 levels 30 minutes before proposed surgery | -Distance from skin to hyoid bone (DSHB) | -Distance from skin to thyrohyoid membrane (DSTM) | -Distance from.skin to anterior commissure of vocal cord (DSAC) | and to compare and correlate the findings with Cooks modification of Cormack Lehane score in predicting difficult laryngoscopy
-Distance from.skin to anterior commissure of vocal cord (DSAC)
时间窗: -Ultrasonographic measurement of anterior neck soft tissue thickness at 3 levels 30 minutes before proposed surgery | -Distance from skin to hyoid bone (DSHB) | -Distance from skin to thyrohyoid membrane (DSTM) | -Distance from.skin to anterior commissure of vocal cord (DSAC) | and to compare and correlate the findings with Cooks modification of Cormack Lehane score in predicting difficult laryngoscopy
-Distance from skin to hyoid bone (DSHB)
时间窗: -Ultrasonographic measurement of anterior neck soft tissue thickness at 3 levels 30 minutes before proposed surgery | -Distance from skin to hyoid bone (DSHB) | -Distance from skin to thyrohyoid membrane (DSTM) | -Distance from.skin to anterior commissure of vocal cord (DSAC) | and to compare and correlate the findings with Cooks modification of Cormack Lehane score in predicting difficult laryngoscopy
and to compare and correlate the findings with Cooks modification of Cormack Lehane score in predicting difficult laryngoscopy
时间窗: -Ultrasonographic measurement of anterior neck soft tissue thickness at 3 levels 30 minutes before proposed surgery | -Distance from skin to hyoid bone (DSHB) | -Distance from skin to thyrohyoid membrane (DSTM) | -Distance from.skin to anterior commissure of vocal cord (DSAC) | and to compare and correlate the findings with Cooks modification of Cormack Lehane score in predicting difficult laryngoscopy
-Distance from skin to thyrohyoid membrane (DSTM)
时间窗: -Ultrasonographic measurement of anterior neck soft tissue thickness at 3 levels 30 minutes before proposed surgery | -Distance from skin to hyoid bone (DSHB) | -Distance from skin to thyrohyoid membrane (DSTM) | -Distance from.skin to anterior commissure of vocal cord (DSAC) | and to compare and correlate the findings with Cooks modification of Cormack Lehane score in predicting difficult laryngoscopy
次要结局
- To compare and correlate the ultrasonographic measurement of anterior neck soft tissue thickness with conventional assesment methods (Modified mallampatti score, thyromental distance, interincisor gap, sternomental distance and neck movements) in predicting difficult laryngoscopy(5mins)