Electrocardiogram of Anesthetized Laboratory Cats
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概要
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By the least square method, the mean electrical axes for P, QRS and T wave were measured in seven randomly bred laboratory cats originated from the authors' disease-free cat breeding colonies, under different anesthetic conditions.<BR>1) In cats in right lateral recumbency anesthetized with pentobarbiton sodium, mean voltage (R) and degree of angle (θ) of mean electrical axes for P, QRS and T were as follows : R<SUB>P</SUB>=0.059±0.011 MV, θ<SUB>P</SUB>=81±7° R<SUB>QRS</SUB>=0.067±0.037 MV θ<SUB>QRS</SUB>=50±42°, R<SUB>T</SUB>=0.104±0.046 MV and θ<SUB>T</SUB>=73±20°.<BR>2) In cats anesthetized with ketamin hydrochloride in the same body position as mentioned above, mean electrical axes for P, QRS and T were as follows: R<SUB>P</SUB>=0.049±0.01 MV, θ<SUB>P</SUB>=79±15°, R<SUB>QRS</SUB>=0.054±0.032 MV, θ<SUB>QRS</SUB>=109±40°R<SUB>T</SUB>=0.11±0.003 MV and θ<SUB>T</SUB>=50±22°.<BR>3) In the case of horizontal plane in right lateral recumbency, the influence on the mean electrical axes revealed a significant difference between the two anesthetics (P<0.05), except θP.<BR>4) Analysis was carried out on the variance among four different body positions on three plane. θ<SUB>QRS</SUB> and θ<SUB>T</SUB> only on the horizontal plane revealed a significant difference (P<0.05). Scattering was found on the transeverse plane. Further studies would be required on lead positions in the cat.
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