CT-confirmed venous air embolism reported in two pet rabbits: full analysis

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A newly published rabbit case series is putting a sharper clinical frame around a rare but potentially life-threatening hospital complication: iatrogenic venous air embolism. The report, published in the Journal of Veterinary Emergency and Critical Care, describes two pet rabbits in which venous air embolism was identified on computed tomography, with one rabbit surviving after treatment and long-term follow-up. The cases stand out because CT-confirmed venous air embolism is rarely documented in pet rabbits, even though the underlying risk around IV catheter use is well recognized across species. (emedicine.medscape.com)

That matters in part because rabbit medicine has changed. Pet rabbits are more commonly receiving referral-level diagnostics, hospitalization, contrast studies, and critical care support than they did a decade ago, and CT is playing a larger role in exotic companion animal practice. Published work has already examined the safety of IV contrast administration in rabbits undergoing conscious CT, reflecting how routine advanced imaging has become in this species. As that diagnostic footprint grows, so does exposure to line-associated complications that may be familiar in dogs, cats, horses, and human medicine, but less well characterized in rabbits. (pubmed.ncbi.nlm.nih.gov)

The case series centers on two rabbits with presumed IV catheter-associated air entry and CT evidence of venous air embolism. Based on the abstract, the authors emphasize that rabbits may be especially vulnerable because small volumes of air can represent a proportionally larger insult in a small patient, and because species-specific cardiopulmonary sensitivity may amplify consequences. That framing is consistent with the broader literature: venous air embolism is usually iatrogenic, often tied to catheter insertion, maintenance, disconnection, infusion systems, or catheter removal. In human CT literature, small vascular air emboli after IV contrast administration are often detected incidentally, while veterinary reports in dogs and horses show catheter-associated emboli can produce neurologic, cardiopulmonary, or sudden collapse presentations. (emedicine.medscape.com)

Even without the full rabbit paper text available here, the broader evidence helps place the findings. A 32-case equine series found catheter-associated venous air embolism was uncommon but clinically important in hospitalized horses, and a canine case report documented nonfatal infusion pump-related venous air embolism. Reviews in human medicine likewise describe prevention as heavily dependent on avoiding breaks in the venous circuit and using prompt positional and supportive management when embolism is suspected. Taken together, the rabbit report appears less like an isolated oddity and more like a species-specific warning about a known systems risk. That’s an inference from related literature, but it is a reasonable one. (pubmed.ncbi.nlm.nih.gov)

Expert reaction specific to this rabbit paper was limited in publicly indexed sources, and no standalone press release was readily available in the search results. Still, the surrounding literature is consistent on the practical message: diagnosis can be missed if teams aren’t looking for it, and CT may help confirm the problem when clinical deterioration follows catheter manipulation or imaging procedures. One prior report on venous air emboli detected on CT in small animals suggests at least some events may be underrecognized rather than truly absent. (openurl.ebsco.com)

Why it matters: For veterinary professionals, especially those in emergency, critical care, exotics, anesthesia, and diagnostic imaging, the report highlights a preventable complication that may deserve more explicit rabbit-specific protocols. In practice, that means renewed attention to catheter placement and securement, line priming, infusion pump setup, hub management, disconnection risk, and monitoring around imaging workflows. It also broadens the differential list for rabbits that acutely decompensate after IV access or CT. Because rabbits have little physiologic margin for error, an event that might be incidental in a larger patient could become consequential much faster. (pubmed.ncbi.nlm.nih.gov)

The report may also have value beyond rabbit medicine. Case series like this often shape hospital checklists, technician training, and imaging suite protocols more than they change formal guidelines overnight. If additional cases are published, the field could move toward clearer recommendations on prevention, recognition, and triage for venous air embolism in exotic companion mammals. (sciencedirect.com)

What to watch: The next signal to watch is whether the full paper prompts follow-on commentary, additional rabbit case reports, or updated best-practice protocols from exotics, emergency, and imaging services on IV line handling and post-event management. (pubmed.ncbi.nlm.nih.gov)