Health Condition 1: null- post operative ASA-1 patients planned for lower limb or lower abdominal surgery under regional anaesthesia
Conditions
Interventions
Intervention1: oxygen therapy by single unit venturi valve: oxygen therapy wil be given by single unit venturi valve after gentle insertion of a nasopharyngeal airway into the anaesthetised nasal cavi
Sponsors
University College of Medical Sciences and GTB Hospital Delhi
Eligibility
Inclusion criteria
Inclusion criteria: post operative ASA-1 patients who are planned for lower limb and lower abdominal surgery under regionaL anaesthesia with normal ventilatory pattern
Exclusion criteria
Exclusion criteria: 1.smokers 2.obese patients with BMI >25 3.upper respiratory tract infection or history of uri in last 6weeks 4.deviated nasal septum/nasal polyp/any other cause of nsal obstruction 5.bleeding tendencies/past history of epistaxis/family history of bleeding disorders 6.past history of basal skull fracture.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Effective fio2 obtained by the patient with the single unit venturi valve at different settings of air entrainment port with driving oxygen flow rate of 1-15l/min in increments of 1l/minTimepoint: 30 min post-op, every 3 min thereafter for the next 2 hr | — |
Secondary
| Measure | Time frame |
|---|---|
| Concentration of oxygen output of a single unit venturi valve with driving oxygen flow rate of 1-15L/min in increments of 1L/min 2.Total gas outflow at the patient end of the single-unit venturi valve 3.Behaviour of single unit venit venturi valve in terms of its perforamance as fixed or varible at flows higher or lower than that recommended by the manufacturer.Timepoint: Before using the device on the patient, every 3 min after changing the oxygen flow in increments of 1 L/min | — |
Countries
India
Contacts
Public ContactDr AK Sethi
University College of Medical Sciences and GTB Hospital, Delhi
Outcome results
None listed