Methods of oxygen delivery systems in tertiary care center Mumbai evaluated with Objectives To identify the methods of oxygen delivery system used in tertiary Care Center. To prepare guidelines for different methods of oxygen delivery systems. To compare methods of oxygen delivery systems with prepared guidelines. To recommend suggestions for improvement based on the study findings. Method: The research approach used in this study was the exploratory non- experimental approach. Research approach in this study was the exploratory non- experimental approach. Selected hospital in Mumbai. Study done in B.M.C. Hospital (medical ward 4, 4A, 9, 11, 12 and EMS, ICU) Result: In this study, the population comprised of all the patients who were receiving oxygen therapy using different oxygen delivery systems. the age varied from 15 years to 97 years Majority (36%) samples were in the age group 36years-55years Majority of the samples were females 67% and 37% of the samples were males. With regard to the education of the samples, majority (36%) samples were receiving oxygen therapy had completed their primary education. Majority (57%) of the samples were diagnosed under medical conditions and (43%) of the samples were diagnosed under surgical conditions. With regard to the duration of illness it varied from 1 day to 120 days. Majority (93%) of the samples had been ill for 1-20 days, (4)% samples were ill for 21-40days, (1%) sample were ill for 41-60 days, (1%) sample was ill for 61-80 days (1%) sample was ill for 81days and above. With regard to the duration of oxygen administration it varied from 1 day to 120 days. Majority (90.32%) of the samples were administered oxygen therapy for 1-5 days, (5%) of the sample were administered oxygen therapy for 6-10 days, (2%) of the sample were administered oxygen therapy for 11-15 days, (2%) of the samples were receiving oxygen therapy for 21 days and above. With regard to the oxygen flow rate, Majority (29%) of the samples were administered oxygen at 8 liter, (27%) of the samples were administered oxygen at 6liter, (24%) of the samples were administered oxygen at 2 liter, (18%) of the samples were administered oxygen at 4 liter,(2%) of the sample were administered oxygen at 10liter. With regard to the of written orders, Majority (59%) of the samples had written orders present in their record file, (41%) of the samples had no prescribed orders in their record file Comparison among All Different Oxygen Delivery System

1. Compliance to the guidelines using nasal cannula were-22.12%
2. Compliance to the guidelines using Face Mask were-30.52%
3. Compliance to the guidelines using Non –rebreathing Mask were-24.68%
4. Compliance to the guidelines using Partial breathing Mask were-30.91%
5. Compliance to the guidelines using Venturi Mask were-25.21%
6. Compliance to the guidelines using nasal Tracheostomy tube were-37.46%
7. Compliance to the guidelines using Endotracheal Tube were-24.63%
8. Compliance to the guidelines using Ventilator Invasive were-28.52%
9. Compliance to the guidelines using Ventilator Non-invasive were-31.65%

Methods of oxygen delivery system were compared using Annova. Calculated F value 1.4008(8,270) was lesser than the tabulated value 1.9727 at 0.05 level of significance hence there is no significance among the different oxygen delivery systems. Conclusion: It can be concluded that, as per the prepared guideline were followed minimally and there is need to follow the prepared guidelines to provide the effective oxygen therapy. There is no significance difference among the all oxygen delivery system, and there is need to improve. The prepared guidelines will be helpful for the hospital staff in future for better care.