Efficacy of Invented Ice Chamber for Storage and Transport of Specimen for Blood Gas Analysis

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Nittaya Phothiwit


Background : Arterial blood samples are commonly collected in syringes and stored in ice slurry before blood gas analysis. The specimens may be contaminated by water leakage into the syringes. The author has invented a ready-to-used ice chamber from a plastic cup and 20-ml disposable syringe to store and transport them.
Objective : To study the use efficacy and blood gas analysis results of specimens collected in plastic syringes stored in the invented ice chamber comparing with the conventional crushediced container.
Material and method : A laboratory experimental study was conducted on arterial blood samples of 25 anesthetic patients sending for blood gas analysis during the surgery in Lampang Hospital. Specimens of each patient were collected in two plastic syringes and randomly allocated into 2 groups. They study group was stored and transported in the invented ice chamber whereas the control group was in the crushed-iced container. Sample storage time and incidence of specimen contamination were recorded. Difference of core temperature at 5, 10, 15, 30 minutes and results of blood gas analysis between the groups were analyzed with paired
Results : Core temperature in the ice chamber was higher than the crush-iced container at 5 minutes (0.28 ± 0.15 vs 0.09 ± 0.05 ºC) and 10 minutes (0.11 ± 0.08 vs 0.03 ± 0.03 ºC) significantly (p<0.001), but was not different at 15 and 30 minutes (p = 0.283 and 0.076
respectively). Sample storage time was 4.62 ± 1.40 minutes and specimen contamination was not found. The average pH, PO2, PCO2, HCO3 and base excess of both groups were not significantly different.
Conclusion : Efficacy to storage and transport specimens for blood gas analysis of the invented ice chamber was not different from the conventional crushed-iced container.


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Phothiwit, N. (2022). Efficacy of Invented Ice Chamber for Storage and Transport of Specimen for Blood Gas Analysis. Lampang Medical Journal, 32(2), 51–59. Retrieved from https://he01.tci-thaijo.org/index.php/LMJ/article/view/259794
Original Article


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