Impact of Ultrasound Guidance on the Performance of Accurate Cricoid and Paralaryngeal Pressure
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Ultrasonography, Interventional
- Sponsor
- University of Malaya
- Enrollment
- 51
- Locations
- 1
- Primary Endpoint
- The number of patients with eccentric oesophagus under general anesthesia, successfully occluded by using cricoid and paralaryngeal pressure.
- Status
- Completed
- Last Updated
- 6 years ago
Overview
Brief Summary
The primary objective is to study impact of upper airway ultrasonography in guiding anaesthetic assistant into providing accurate cricoid pressure, or both cricoid and paralaryngeal pressure in those with oesophagus deviation, achieving sonographic proven oesophageal occlusion compared to those without ultrasound guidance.
Detailed Description
All patients consented for the study were having their airway examined via US. Cross sectional sonography of the airway was performed to determine the anatomic relationship of the oesophagus relative to the trachea: 1. before induction of anaesthesia 2. after GA before external airway pressure manoeuvre 3. after GA with external airway pressure manoeuvre. US guided CP was applied on subjects with central oesophagus; CP and PLP were applied on subject with eccentric oesophagus anatomy. PLP was performed by lateral compression on the eccentric oesophagus by fingertips under US guidance. To standardised the application of CP and PLP, only 2 well trained investigators were allowed to performed the CP and PLP, US scan on airway and patient recruitment. The conduct of trial involved 2 investigators where first investigator provide US scan, and second investigator provide compression of CP or PLP using fingertips guided by the instruction of first investigator.
Investigators
Dr Lim Siu Min
Dr,
University of Malaya
Eligibility Criteria
Inclusion Criteria
- •Elective list Under general anaesthesia Not intubated prior to OT
Exclusion Criteria
- •Below 18 years old Pregnant Neck deformities Previous maxillofacial surgery
Outcomes
Primary Outcomes
The number of patients with eccentric oesophagus under general anesthesia, successfully occluded by using cricoid and paralaryngeal pressure.
Time Frame: ultrasound assessment of oesophagus done after general anaesthesia, during application of cricoid pressure, and during application of cricoid and paralaryngeal pressure
we are studying the effectiveness of cricoid pressure versus cricoid and paralaryngeal pressure(novel technique) in those patients with eccentric oesophagus under general anaesthesia. We use ultrasound to determined the position of the oesophagus after patient under general anaethesia ( to group them under central oesophagus and eccentric oesophagus) and also to determine the success of oesophagus occlusion.
Secondary Outcomes
- The number of patients with central oesophagus under general anesthesia, successfully occluded by using cricoid pressure.(ultrasound assessment of oesophagus done after general anaesthesia and during application of cricoid pressure)