A descriptive study to analyze the effect of change in flow rates of oxygen on the effective concentration of oxygen obtained using drug nebuliser mask and different venturi valves with mask
Phase 4
- Conditions
- Health Condition 1: null- Post-operative patients operated for lower abdominal or lower limb surgeries under regional anaesthesia
- Registration Number
- CTRI/2017/01/007723
- Lead Sponsor
- niversity College of Medical Sciences and GTB Hospital
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Yet Recruiting
- Sex
- Not specified
- Target Recruitment
- 40
Inclusion Criteria
Post operative ASA-1 patients planned for lower limb or lower abdominal surgery under regional anaesthesia and having normal ventilatory pattern.
Exclusion Criteria
Those 20 years or 40 years, body mass index 25kg/m2 will not be included. patients having active upper respiratory tract infection,deviated nasal septum,nasal polyp or any other cause of nasal obstruction,bleeding tendencies/past history of epistaxis,family history of bleeding disorders and past history of basal skull fracture will be excluded.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Effective FiO2 delivered to the patient with each test device with driving <br/ ><br>oxygen flow rate of 1-15 L/min in increments of 1L/min eachTimepoint: Every minute for 3 minutes after changing flow rate.
- Secondary Outcome Measures
Name Time Method FO2 of each of the test device with driving oxygen flow rate of 1-15 L/min in <br/ ><br>increments of 1L/min each. <br/ ><br>2. Total gas flow output at the patient end of each of the test device with driving <br/ ><br>oxygen flow rate of 1-15 L/min in increments of 1L/min each. <br/ ><br>5 <br/ ><br>3. Behaviour of the six venturi valves in terms of their performance as fixed or <br/ ><br>variable, at flows higher or lower than those recommended by the <br/ ><br>manufacturer.Timepoint: 1 min interval