Aim of the study is to find out the effect of different flow rates of oxygen provided through nasal prongs in addition to face mask on the quality of preoxygenation

Recruiting

Conditions: Medical and Surgical,

Registration Number: CTRI/2022/01/039710

Lead Sponsor: Maulana Azad Medical College

Brief Summary: Preoxygenation is a critical component of airway management wherein the patient is made to breathe 100% oxygen to denitrogenate the functional residual capacity of lungs and create adequate oxygen reservoir. However, a tight seal required for ideal preoxygenation is not always possible due to factors such as emergency scenarios, facial traumas, patients with beard, uncooperative or edentulous patients or lack of specialized circuits. A nasal cannula is often used during apneic oxygenation and its addition to face mask while preoxygenation can improve its efficacy. Oxygen at a flow rate of 0 and 5 L/min has been found to be deleterious due to room air entrainment while a flow rate of 10 L/min has shown no impairment of preoxygenation process. Hence, we are conducting this study to compare and evaluate different oxygen flow rates supplied through a nasal cannula on the efficacy of preoxygenation.

Detailed Description: Not available

Recruitment & Eligibility

Status: Open to Recruitment

Sex: All

Target Recruitment: 54

Inclusion Criteria

Patients scheduled for elective surgery under anaesthesia.

Exclusion Criteria

Known lung disease Suspected coronary and cerebrovascular disease Previous exposure to bleomycin or amiodarone Pregnancy BMI>35 Pathological abdominal distention Factors affecting mask seal like beard, moustache, dentures or facial abnormalities.

Study & Design

Study Type: Interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
End tidal oxygen concentration after 3 mins of preoxygenation in well-sealed face mask and in a combination of both face mask and nasal cannula (at flow rates of 0L/min, 5L/min and 10L/min	3 minute

Secondary Outcome Measures

Name	Time	Method
End tidal oxygen concentration after 1 and 2 mins of preoxygenation in well-sealed face mask and in a combination of both face mask and nasal cannula (at flow rates of 0L/min, 5L/min and 10L/min	1 minute

Trial Locations

Locations (1): Lok Nayak Hospital
🇮🇳
Central, DELHI, India
Lok Nayak Hospital
🇮🇳Central, DELHI, India
Dr Kapil Chaudhary
Principal investigator
9871262699
kapsdr@yahoo.com