arterial O 2saturation well above 96% for the remainder of
the anaesthetic period. At the same time PEEP did not
negatively affect haemodynamic variables except
maybe cardiac output, although this remained within a
range generally considered acceptable during inhalant
anaesthesia in the horse.
Recovery of horses from general anaesthesia is
associated with a relatively high incidence of morbidity
and mortality (Johnston 2002). The Anderson Sling
Suspension System (Taylor et al. 2005) offers the advantage
of keeping chest compression to a minimum, thereby
improving spontaneous ventilation and reducing chest
pain during inspiration. It has been successfully applied in
horses that are considered at high risk for catastrophic
injury or fatigue during anaesthetic recovery, and this
horse, with its severely impaired respiratory function and
overall compromised health condition was considered as
being in need for assistance during recovery. Furthermore,
the sling allowed the horse to be kept in sternal
recumbency, which facilitated his breathing while
awakening from anaesthesia.
Conclusion
In the anaesthetised horse undergoing subtotal
pulmonectomy, placement of a customised tube-in-tube
endobronchial blocker combined with LRM and PEEP
allows OLV and adequate pulmonary gas exchange.
Manufacturers’ addresses
1Smiths Medical/Surgivet, Waukesha, Wisconsin, USA.2North American Dräger, Telford, Pennsylvania, USA.3Datex-Ohmeda, Louisville, Colorado, USA.4Olympus America, Inc Melville, New York, USA.5Organon Tecknika bv, Boxtel, The Netherlands.6Instrumentation Industry, Bethel Park, Pennsylvania, USA.7Datascope Corp., Mahwah, New Jersey, USA.8LiDCo Ltd, Cambridge, UK.9Nova Biomedical, Inc, Waltham, Massachusetts, USA.10Osmetech, The Hague, The Netherlands.11Opti Medical System Inc, Roswell, Georgia, USA.12Nellcor Inc., Hayward, California, USA.13Care for Disabled Animals, Potter Valley, California, USA.
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236 EQUINE VETERINARY EDUCATION / AE / may 2010