Medical oxygen is an essential medicine in the treatment of COVID-19 and other diseases. Each Doctor, Nurse, Administrator needs to know how to calculate the need of oxygen for a patient in a covid center ward or an ICU. The oxygen requirement is different for Wards, Patients on Ventilator & Patients on BiPAP. Planning the Bed Capacity for Covid Center as per oxygen requirement is needed.

1. ”HOW TO CALCULATE OXYGEN REQUIREMENT”
DR. ANIL CHILLIMUNTHA
VICE PRESIDENT
METAS GROUP OF HOSPITALS

2. TYPES - 1-Jumbo Oxygen Cylinder = 7000 Litres Oxygen =
7 Cubic Meter

3. 1-Dura Oxygen Cylinder = Contain Nearly 22 Jumbo

4. 1-PORTA (1KL) Oxygen Cylinder = Contain Nearly 100
Jumbo

5. 1-Liter of Liquid Oxygen gives 861 Litres of Gaseous
Oxygen

6. OXYGEN GENERATION PLANT

7. Patient on Oxygen Mask / Non Rebreathing Mask
(NRBM) / Venturi Mask.
Considering Maximum Oxygen Flow = 15 Litre/ min
For 1-bed
= 15(Lit) × 60 (Min)
= 900 Litres / hour
= 900 × 24(hours)
= 21600 Litres / day / bed
= 21600 ÷ 7000 (1 jumbo)
= 3 Jumbo oxygen cylinder / day / bed.

8. Patient on Non Invasive Ventilator ( NIV)
Considering Maximum Oxygen Flow = 60
Litre/ min For 1-bed
= 60(Lit) × 60 (Min)
= 3600 Litres / hour
= 3600 × 24(hours)
= 86400 Litres / day / bed
= 86400 ÷ 7000 (1 jumbo)
= 12 Jumbo oxygen cylinder / day / bed.

9. For Intubated Patient (Patient on invasive Ventilator)
Required oxygen flow considering = 12 Liters/
Min.
= 12(Lit) × 60 (Min)
= 720 Liters / hour
= 720 × 24(hours)
= 17280 Liters / day / bed
= 17280 ÷ 7000 (1 jumbo)
= 2.5 to 3 Jumbo oxygen cylinder / day / bed.

10. EXAMPLE
For Covid ICU = 35 Beds.
Considering that all 35 ICU Beds running with Non Invasive
Ventilators.
Oxygen Req. of Covid ICU= Oxygen Requirement for 1bed ×
No of beds
= 86400 (lit of O2) × 35 beds
= 3024000 Litres of gaseous O2
= 3024000 ÷7000
= 432 Jumbo oxygen cylinder required / day

11. Helpline : 9624555777
Reception: 0261-7160300