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  Table of Contents 
Year : 2021  |  Volume : 22  |  Issue : 1  |  Page : 107-108

Modified oxygen supply delivery system from a single source to two patients: A novel yet effective technique

1 Department of Anaesthesiology & Critical Care, Military Hospital Namkum, Ranchi, Jharkhand, India
2 Department of Anaesthesiology & Critical Care, Armed Forces Medical College, Pune, Maharastra, India
3 BDS, BIDSH, Patna, Bihar, India
4 Department of Ophthalmology, Command Hospital (SC), Pune, India

Date of Submission25-Sep-2020
Date of Acceptance30-Nov-2020
Date of Web Publication22-Feb-2021

Correspondence Address:
Prof. Shalendra Singh
Department of Anaesthesiologist and Critical Care, Armed Forces Medical College, Pune - 411 040, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/TheIAForum.TheIAForum_148_20

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How to cite this article:
Kumar V, Singh S, Priyanka, Taank P. Modified oxygen supply delivery system from a single source to two patients: A novel yet effective technique. Indian Anaesth Forum 2021;22:107-8

How to cite this URL:
Kumar V, Singh S, Priyanka, Taank P. Modified oxygen supply delivery system from a single source to two patients: A novel yet effective technique. Indian Anaesth Forum [serial online] 2021 [cited 2021 May 9];22:107-8. Available from: http://www.theiaforum.org/text.asp?2021/22/1/107/309827


Oxygen therapy is a vital requirement for the management of critical patients in the intensive care unit. Especially among the present COVID-19 pandemic, the requirement of oxygen delivery to patients has increased multifold.[1] However, limited central oxygen supply ports and oxygen concentrators, along with a surge in the number of patients requiring oxygen support, has led to a critical shortage of oxygen delivery systems, especially at peripheral hospitals with limited infrastructure and resources.[2] Despite there being various solutions to cater for additional oxygen delivery at hospitals, including setting up new central oxygen pipeline system, increasing the number of oxygen concentrators, and increasing the number of delivery ports in the existing central oxygen pipeline system, these are expensive and time-consuming, and facilities are not readily available at all places.

Another alternative is a simple yet novel modification with widely available and cheaper oxygen delivery devices which are readily available at all hospitals. It will aid in providing oxygen to two patients simultaneously from a single oxygen source. Materials required for this modification of a single unit are two intravenous (IV) infusion sets, one oxygen delivery twin-bore nasal prong-set, and two oxygen face masks or nonrebreathing masks [Figure 1]. The assembly can be explained in five simple steps.
Figure 1: Showing the assembly of a modified oxygen supply delivery system from a single source (a) Intravenous infusion set connector, (b) connection to nasal prong and oxygen face mask tubing, (c) connected assembly through intravenous infusion connector, (d) two face masks attached to a single oxygen source

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  • Step 1: The proximal end connector of the IV infusion set attached to rubber tubing needs to be removed, two such IV infusion sets are required to obtain two connectors
  • Step 2: These connectors obtained from IV infusion sets are snugly connected to each prong of the twin-bore nasal prong set
  • Step 3: The distal end connector of two oxygen face mask or nonrebreathing mask which attaches to oxygen source is now cut and removed, leaving a distal open tube
  • Step 4: The distal open tubes of both face masks are snugly attached to the proximal end of IV infusion connectors attached to nasal prongs
  • Step 5: The distal oxygen source end of twin-bore nasal prongs is connected to the oxygen source.

This simple modification delivers oxygen in equal concentration to two patients from a single oxygen source and provides a length of approximately 9 feet of oxygen tubing, including the length of two bore nasal prongs and face mask tubing, which aids in easy maneuvering of oxygen delivery at two separate beds simultaneously. To test the flow rate of oxygen at each end of this assembly, a test was conducted by connecting a flow meter to the distal end of each mask tube and blocking the other tube at different flow rates and it was noticed that 50% of the source flow was delivered at the patient end of each mask. To further control the flow at each patient end in case of different flow rate requirements of each patient, a Venturi mask may be attached instead at each patient end can be further manipulated as per patient's requirement.

This cost-effective, easy to assemble, readily available, and simple yet novel modification can be beneficial in the provision of lifesaving oxygen therapy to twice the number of patients with available limited resources among the COVID-19 pandemic.

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Conflicts of interest

There are no conflicts of interest.

  References Top

Shang Y, Pan C, Yang X, Zhong M, Shang X, Wu Z, et al. Management of critically ill patients with COVID-19 in ICU: Statement from front-line intensive care experts in Wuhan, China. Ann Intensive Care 2020;10:73.  Back to cited text no. 1
Paganini M, Conti A, Weinstein E, Della Corte F, Ragazzoni L. Translating COVID-19 pandemic surge theory to practice in the emergency department: How to expand structure. Disaster Med Public Health Prep. 2020;1-10. Epub ahead of print. PMID: 32216865; PMCID: PMC7156581.  Back to cited text no. 2


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