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Populations affected by natural disasters usually rely heavily on search and rescue operations and relief supplies to sustain their road to recovery. It is observed that few survivors are recovered after 2 weeks1 of continuous search and rescue efforts and limited resources are distracted from aiding rescued survivors. Hence, individuals living in natural disaster prone areas or have received early warning for an impending disaster may consider owning/be provided with a pre-emergency nutritional pack for self-sufficiency. In addition, collapsed structures may entrap victims in confined spaces with limited oxygen supply and faces the danger of hypercapnia, so a hypothetical example of a 20 year old healthy male in 14 day entrapment was used to demonstrate the dietary, CO2 output and CO2 scrubbing requirements. A commercially available 20 g protein bar and lithium hydroxide (LiOH) powder were used in the calculations to show how the content of such a pre-emergency pack can be tailored.

Key considerations for a pre-emergency survival pack: a hypothetical case study