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Comparison of medetomidine and dexmedetomidine as premedicants in dogs undergoing propofol-isoflurane anesthesia.
OBJECTIVE: To compare 3 dose levels of medetomidine and dexmedetomidine for use as premedicants in dogs undergoing propofol-isoflurane anesthesia. ANIMALS: 6 healthy Beagles. PROCEDURE: Dogs received medetomidine or dexmedetomidine intravenously at the following dose levels: 0.4 microg of medetomidine or 0.2 microg of dexmedetomidine/kg of body weight (M0.4/D0.2), 4.0 microg of medetomidine or 2.0 microg of dexmedetomidine/kg (M4/D2), and 40 microg of medetomidine or 20 microg of dexmedetomidine/kg (M40/D20). Sedation and analgesia were scored before induction. Anesthesia was induced with propofol and maintained with isoflurane. End-tidal isoflurane concentration, heart rate, and arterial blood pressures and gases were measured. RESULTS: Degrees of sedation and analgesia were significantly affected by dose level but not drug. Combined mean end-tidal isoflurane concentration for all dose levels was higher in dogs that received medetomidine, compared with dexmedetomidine. Recovery time was significantly prolonged in dogs treated at the M40/D20 dose level, compared with the other dose levels. After induction, blood pressure decreased below reference range and heart rate increased in dogs treated at the M0.4/D0.2 dose level, whereas blood pressure was preserved in dogs treated at the M40/D20 dose level. However, dogs in these latter groups developed profound bradycardia and mild metabolic acidosis during anesthesia. Treatment at the M4/D2 dose level resulted in more stable cardiovascular effects, compared with the other dose levels. In addition, PaCO2 was similar among dose levels. CONCLUSIONS AND CLINICAL RELEVANCE: Dexmedetomidine is at least as safe and effective as medetomidine for use as a premedicant in dogs undergoing propofol-isoflurane anesthesia.
Department of Clinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Helsinki, Finland.
Kuusela E, Raekallio M, Väisänen M, Mykkänen K, Ropponen H, Vainio O.
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Il Colpo di Calore: il nemico del Bulldog Inglese
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The Original Bulldog Club ->> The Bulldog Club of Milan ->>To promote and encourage the Breeding of Pure Bulldogs in all of the World, but more especially In the provinces of England, to Ireland, and in Scotland, in Italy, in Lombardy and in Milan.
Honorary President, Ever and Forever, Mrs. D.N. and Mr. Les Thorpe. Bulldog Club, creato per celebrare la incredibile nascita proprio a Milano, per merito esclusivo di Tuffnuts Bulldogs, in collaborazione con il The Bulldog International Research Center e con Ocobo Show Bulldogs, di quelli che, secondo i più profondi studi mondialmente dimostrabili, risulterebbero essere i più diretti discendenti e, quindi, i legittimi eredi di Rosa, il capostipite della Razza Bulldog, con genealogia integralmente inglese, Lincolnshire, Tuffnuts Ocobo. Il Club si è formato, infatti, nel Dicembre 2004 alla nascita di Tuffnuts Snow Angel Tuffnuts, dedicata al Maggiore L.A. Jackson ed a Dr. Les Cotton, il secondo Original Pure Breed Bulldog, nato a Milano ed in Italia dopo Tully, nato nel 2000, sempre nell ' Allevamento Tuffnuts Snow Angel. Per supportare la razza e tutti coloro che possiedono un Bulldog Inglese. Cucciolate disponibli, affidamento bulldogs, problemi di salute, riproduttori disponibili, etc..Il primo Club che si pone l'obiettivo di selezionare ed allevare anche il Bulldog Originale di Razza Pura, come era fino all' inizio del 20° secolo, con una genealogia completamente inglese, discendente dai più famosi Campioni della Storia.
Original Bulldog Old English Bulldog Olde English Bulldogge Purebred Bulldog:Tully
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