The Construction and Study of Pressure and Volumeof Srinagarind Hospital Non-Rebreathing Bag and Conventional Non-Rebreathing Bag in Simulator

Authors

  • Sunchai Theerapongpakdee
  • Sarinya Chanthawong
  • Krongkaew Phanumonwathee

Keywords:

non-rebreathing bag, self-inflating bag, resuscitation bag, one way valve

Abstract

Background and Objective: Nowadays, one of the important resuscitation equipment is non-rebreathing bag orself –inflating bag. ‘One way valve technique’ has been used in all type of the non-rebreathing bag. Thus, the objective of this study was to invent theSrinagarind hospital non-rebreathing bag(SRI bag), by using common materials, to reduce cost and to do it yourself.

Method: TheSRI bag was made of 1.45 litres plastic bottle(PEPSI®), 5 ml, 10 ml, 20 ml disposable syringes, endotracheal tube and disposable medical gloves. After SRI bag was done, weconnect it with lung simulator (LS800 lung simulator Dräger Medical AG & Co. KG, Lübeck, Germany). The test was done by squeezingthe bag 20 times regularly (average 10 time/min) with SRI bag and conventional non-rebreathing bag (1 liter and 2 liters). Pressure and volume were recorded via pressure gauge and spirometer. After that, the pressure was fixed at 10 mmHg and the volume was recorded in allnon-rebreathing bags.

Result: The mean pressure of SRI bag whencomparing with 1 liter and 2 liters conventional non-rebreathing bag are9.35 ± 1.31, 17.1 ± 1.55, 15.73 ± 2.87 mmHg, respectively. The mean volumes are 86 ± 16.98, 213 ± 8.13, 359.15 ± 26.07 millilitres, respectively. Atset pressure of 10 mmHg, the mean volumes are 65.5±7.59, 120.5±10.5, 199.5 ±50.2milliliters, respectively. From this result, the pressure and volume of SRI bag was less than both conventional non-rebreathingbag which can be explained that the SRI bag had less compliance and flexibility than conventional non-rebreathingbag.

Conclusion: Srinagarind hospital non-rebreathing bag can be constructed by yourself with low cost and from common materials. However, the SRI bag had less compliance and flexibility than conventional non-rebreathing bag. For the safety reason, itmay be suitableto use only in an emergency situation.

How to Cite

1.
Theerapongpakdee S, Chanthawong S, Phanumonwathee K. The Construction and Study of Pressure and Volumeof Srinagarind Hospital Non-Rebreathing Bag and Conventional Non-Rebreathing Bag in Simulator. SRIMEDJ [Internet]. 2016 Oct. 5 [cited 2024 Jun. 19];31(5):53. Available from: https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/68197

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