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    Novel Intraosseous Device Performance and Longevity in a Goat Model (Capra hircus)

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    Date
    2012-02-14
    Author
    Jackson, Erin Elizabeth
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    Abstract
    Two studies were performed to assess the function and longevity of a novel intraosseous (IO) catheter device. For the initial study, nine animals were assigned to three study groups. The first group received a 25 mm intraosseous device within the proximal humerus, the second group within the proximal tibia, and standard jugular catheters were placed in the final control group. Serial aerobic and anaerobic blood cultures were collected from jugular veins at day zero, then every third day while devices remained in use. Radiographs were obtained immediately after placement and again after removal of all IO devices. Goats were observed for overall clinical condition and lameness associated with catheter sites, and catheters were evaluated for patency and proper positioning. IO devices in the tibia remained in for less time than those in the humerus. Blood cultures in this study showed growth of Bacillus, Staphylococcus, and one colony within the genera Brachyacterium or novel Dermabacteraceae. Catheters also showed growth of Bacillus, as well as a single colony of Micromonospora chalcea. No animals in either IO group exhibited radiographic evidence of resulting damage or structural change within surrounding bone. In study two, eighteen goats were assigned to two study groups (25 mm intraosseous device within the wing of the ilium, or 45 mm catheter in the proximal humerus). Blood for serial aerobic and anaerobic blood cultures and CBC were collected from jugular veins at day zero, then every second day thereafter while devices remained in use. All clinical monitoring and removal criteria were identical to study one. Catheters in the ilium remained in significantly less time than those in the humerus. Several animals in the proximal humerus group demonstrated moderate lameness following removal. One goat developed an abscess near the insertion site and showed radiographic evidence of periosteal bone growth. Serial cultures showed growth of Bacillus, Streptococcus, Staphylococcus, and Enterococcus. Bloodwork indicated mild elevations of white blood cells from baseline in some cases. Our study indicated that catheters may remain safely in place for greater than 24 hours, but that animals should be closely monitored for negative side-effects for several days during the post-removal period.
    URI
    https://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8589
    Subject
    Intraosseous catheter
    EZ-IO®
    Collections
    • Electronic Theses, Dissertations, and Records of Study (2002– )
    Citation
    Jackson, Erin Elizabeth (2010). Novel Intraosseous Device Performance and Longevity in a Goat Model (Capra hircus). Master's thesis, Texas A&M University. Available electronically from https : / /hdl .handle .net /1969 .1 /ETD -TAMU -2010 -12 -8589.

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