Arrhythmias and transient changes in cardiac function after topical administration of one drop of phenylephrine 10% in an adult cat undergoing conjunctival graft     

Franci P  Leece EA  McConnell JF 《Veterinary anaesthesia and analgesia》2011,38(3):208-212

HistoryA 2-year-old, entire female, Somali cat weighing 3.8 kg was admitted for a conjunctival graft on the right eye, for treatment of an acute descemetocele. Medetomidine 4.2 μg kg^?1 and methadone 0.2 mg kg^?1 were administered by intramuscular injection as preanaesthetic medication. Anaesthesia was induced using diazepam 0.26 mg kg^?1 and propofol 4 mg kg^?1 administered by intravenous (IV) injection. Following endotracheal intubation, anaesthesia was maintained with isoflurane delivered in oxygen (1 L minute^?1) and nitrous oxide (2 L minute^?1) via a non-rebreathing system. Twenty minutes after induction of anaesthesia, one drop of a 10% phenylephrine hydrochloride solution was administered topically to the right eye.Physical examinationAfter phenylephrine administration, a decrease in heart rate (from 95 to 80 beats minute^?1) and an increase in arterial blood pressure occurred. The pulse then became difficult to palpate manually and multifocal ventricular premature contractions were observed on the electrocardiogram.ManagementNitrous oxide was discontinued and the isoflurane vaporizer setting was decreased from 1.5% to 0.5%. Lidocaine 1 mg kg^?1 IV was administered, this resulted in ventricular bigeminy. The quality of the femoral pulse improved and was regular in rhythm and character. Surgery was completed as fast as possible. The bigeminy progressively disappeared and before disconnecting the cat from the breathing system, there was a normal sinus rhythm with a heart rate of 85 beats minute^?1.Follow-upEchocardiography was performed during recovery and showed mitral and aortic valve insufficiency and dilation of the left ventricle, suggesting a reduction in systolic function. Echocardiography was repeated the following day and was normal.ConclusionsIn order to diminish the potential for cardiovascular sequelae associated with systemic absorption of ocular phenylephrine, less concentrated solutions, smaller drop size or different instillation techniques should be considered for topical use in small patients.  相似文献   

Bone concentration of manganese in white sucker (Catostomus commersoni) from acid,circumneutral and metal-stressed lakes     

H. H. Harvey  G. A. Fraser  J. M. McArdle 《Water, air, and soil pollution》1986,30(1-2):515-521

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Removal of Benzene by the Indoor Plant/Substrate Microcosm and Implications for Air Quality     

Orwell  Ralph L.  Wood  Ronald L.  Tarran  Jane  Torpy  Fraser  Burchett  Margaret D. 《Water, air, and soil pollution》2004,157(1-4):193-207

Water, Air, &; Soil Pollution - The quality of the indoor environment has become a major health consideration, since urban-dwellers spend 80-90% of their time indoors, where air pollution can be...  相似文献   

Veterinary Dental Techniques for the Small Animal Practitioner          下载免费PDF全文

Fraser A. Hale 《The Canadian veterinary journal. La revue veterinaire canadienne》1994,35(6):386-387

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Significance for exercise capacity of some electrocardiographic findings in racehorses     

CM KING  DL EVANS†  RJ ROSE 《Australian veterinary journal》1994,71(7):200-202

Summary Various cardiorespiratory and metabolic indices were assessed during treadmill exercise in Thoroughbred and Standardbred racehorses with T wave changes in 4 or more leads on the electrocardiogram or second-degree atrio-ventricular (AV) block, and in horses that had no abnormalities on clinical examination, resting electrocardiography or upper respiratory tract endoscopy. No significant differences in heart rate, plasma lactate concentration, arterial blood gases, oxygen uptake, run time, peak velocity, or blood and red cell volumes were found between normal horses and horses with T wave changes or second-degree AV block. These results indicate that some electrocardiographic findings that are considered by some clinicians to indicate cardiac dysfunction, may have little effect on exercise capacity.  相似文献   

Another Veterinary College?          下载免费PDF全文

C. M. Fraser 《The Canadian veterinary journal. La revue veterinaire canadienne》1960,1(11):510-498

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Plasmid transfer and plasmid-mediated genetic exchange in Brucella abortus.   总被引：2，自引：0，他引：2       下载免费PDF全文

C E Rigby  A D Fraser 《Canadian journal of veterinary research》1989,53(3):326-330

Naturally-occurring plasmids and gene transfer mechanisms have not yet been reported in brucellae. Here we show that Brucella abortus is capable of maintaining and transferring the broad-host-range plasmids pTH10 (IncP), pSa (IncW) and R751 (IncP), and describe pTH10-mediated transfer of B. abortus chromosomal genes to Escherichia coli. All three plasmids transferred by conjugation from E. coli to B. abortus S19, and from B. abortus S19 to B. abortus 292 (biovar 4). They were stably maintained with no effect on biotyping characteristics. Plasmid pTH10 is a Tn1-containing derivative of RP4. It confers temperature-sensitive resistance to kanamycin, tetracycline and ampicillin to E. coli, but its tetracycline resistance and temperature sensitivity were poorly expressed in B. abortus. Plasmids pTH10 and pSa both transferred from B. abortus to E. coli DP50, a strain that is auxotrophic for diaminopimelic acid (DAP) Plasmid pTH10 (but not pSa) mobilized Brucella chromosomal gene(s) for DAP synthesis to DP50, yielding non-DAP-requiring (NDR) transconjugants. Neither plasmid transferred the NDR marker from their original E. coli host strains, nor did pTH10 transfer it from NDR transconjugants. Escherichia coli NDR transconjugant EP8.11 was cured of pTH10 by passage at the nonpermissive temperature, but retained the NDR marker and the Tn1-encoded resistance to ampicillin, indicating Tn1-mediated integration of Brucella chromosomal DNA into the E. coli chromosome.  相似文献   

Genetic Conservation of Domestic Livestock          下载免费PDF全文

Andrew F. Fraser 《The Canadian veterinary journal. La revue veterinaire canadienne》1994,35(6):385-386

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Amyloidosis in an Angora goat     

VL THAM  CM BUNN 《Australian veterinary journal》1992,69(2):40-41

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Agents of Psittacosis-Lymphogranuloma Venereum Group Isolated from Muskrats and Snowshoe Hares in Saskatchewan   总被引：2，自引：0，他引：2       下载免费PDF全文

J. Spalatin  C. E. O. Fraser  R. Connell  R. P. Hanson    D. T. Berman 《Canadian journal of veterinary research》1966,30(9):260-264

Agents lethal to chicken embryos and mice were isolated from the blood and spleen of 2 muskrats and 2 snowshoe hares which died during the cataclysmic die-off of 1961 in Central Saskatchewan. The 4 isolates are probably identical. One of them was identified as a member of the psittacosis-lymphogranuloma venereum (PLV) group of organisms on the basis of morphological and tinctorial properties and on the possession of group specific antigens. Application of the method of specificity differences permitted its serotype differentiation.  相似文献