Surgery : Performance of a new carbon dioxide absorbent, Yabashi lime as compared to conventional carbon dioxide absorbent during sevoflurane anesthesia in dogs

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  • KONDOH Kei
    Laboratory of Veterinary Clinical Radiology, Faculty of Applied Biological Sciences, Gifu University, Gifu 501–1193, Japan
  • ATIBA Ayman
    Laboratory of Veterinary Clinical Radiology, Faculty of Applied Biological Sciences, Gifu University, Gifu 501–1193, Japan Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
  • NAGASE Kiyoshi
    Department of Anesthesiology and Pain Medicine, School of Medicine, Gifu University, Gifu 501–1194, Japan
  • OGAWA Shizuko
    Laboratory of Veterinary Clinical Radiology, Faculty of Applied Biological Sciences, Gifu University, Gifu 501–1193, Japan
  • MIWA Takashi
    YABASHI INDUSTRIES CO., LTD., Ogaki, Gifu 503–2213, Japan
  • KATSUMATA Teruya
    YABASHI INDUSTRIES CO., LTD., Ogaki, Gifu 503–2213, Japan
  • UENO Hiroshi
    Department of Small Animal Clinical Sciences, Rakuno Gakuen University, 582 Bunkyoudai-Midorimachi, Ebetsu, Hokkaido 069–8501, Japan
  • UZUKA Yuji
    Laboratory of Veterinary Clinical Radiology, Faculty of Applied Biological Sciences, Gifu University, Gifu 501–1193, Japan Present address: Laboratory of Veterinary Diagnostic Imaging, Cooperative Department of Veterinary Medicine, Iwate University, Ueda-cho, Morioka 020–8550, Japan

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  • Performance of a new carbon dioxide absorbent, Yabashi lime<sup>®</sup> as compared to conventional carbon dioxide absorbent during sevoflurane anesthesia in dogs

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In the present study, we compare a new carbon dioxide (CO2) absorbent, Yabashi lime® with a conventional CO2 absorbent, Sodasorb® as a control CO2 absorbent for Compound A (CA) and Carbon monoxide (CO) productions. Four dogs were anesthetized with sevoflurane. Each dog was anesthetized with four preparations, Yabashi lime® with high or low-flow rate of oxygen and control CO2 absorbent with high or low-flow rate. CA and CO concentrations in the anesthetic circuit, canister temperature and carbooxyhemoglobin (COHb) concentration in the blood were measured. Yabashi lime® did not produce CA. Control CO2 absorbent generated CA, and its concentration was significantly higher in low-flow rate than a high-flow rate. CO was generated only in low-flow rate groups, but there was no significance between Yabashi lime® groups and control CO2 absorbent groups. However, the CO concentration in the circuit could not be detected (≤5ppm), and no change was found in COHb level. Canister temperature was significantly higher in low-flow rate groups than high-flow rate groups. Furthermore, in low-flow rate groups, the lower layer of canister temperature in control CO2 absorbent group was significantly higher than Yabashi lime® group. CA and CO productions are thought to be related to the composition of CO2 absorbent, flow rate and canister temperature. Though CO concentration is equal, it might be safer to use Yabashi lime® with sevoflurane anesthesia in dogs than conventional CO2 absorbent at the point of CA production.

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