Series summary: Four dogs and 2 cats presented for recumbency, disorientation, dyspnea, and stiffness after an estimated 68 hour exposure to exhaust from a generator.
Diagnostics included a serum carboxyhemoglobin levels evaluation, arterial blood gas analysis, pulse oximetry readings, and blood pressure measurements.
Initial therapy included oxygen (O2) administration, intravenous bronchodilators, fluids, and a hemoglobin-based O2 carrying (HBOC) molecule.
Following administration of the HBOC, 4 of the 6 animals showed dramatic clinical improvement.
Two weeks after hospital discharge, the owner reported potential hearing deficits in all animals.
Brain auditory evoked response (BAER) tests were conducted in all surviving animals and some degree of hearing impairment was documented in all cases, with complete clinical resolution noted 6 weeks later.
A delayed nervous system dysfunction was documented in all surviving animals.
Source: Berent, Allyson C., Todd, Jeffrey, Sergeeff, Jennifer & Powell, Lisa L. (2005): Carbon monoxide toxicity: a case series. In: Journal of Veterinary Emergency and Critical Care 15 (2), 128-135.
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