Vet Med - Czech, 2017, 62(1):35-40 | DOI: 10.17221/77/2016-VETMED

The use of colour Doppler imaging to determine the effects of administration of butorphanol, medetomidine and ketamine on indices of feline ocular impedanceOriginal Paper

T. Vrbovska*, L. Hornakova, Z. Drahovska, M. Kozar, A. Trbolova
Small Animals Clinic, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, Slovak Republic

Doppler impedance indices, such as the resistive index (RI) and pulsatility index (PI), are commonly used to characterise resistance to the flow in the vascular system. Chemical restraint can potentially affect these indices, although in some patients such restraint is necessary before ultrasonographic examination. The objective of this study was to compare ocular vascular velocity parameters, measured using Doppler imaging, in healthy conscious cats and in cats after administration of a combination of anaesthetics (butorphanol, medetomidine and ketamine). Twelve healthy cats of different breeds and both sexes were studied using Doppler imaging. The long posterior ciliary arteries in both eyes were examined. Mean comparison tests (paired and unpaired t-test) were used to determine whether any significant differences existed between right and left ocular indices and between sexes. A correlation study was applied between RI, PI and body weight. There were no significant differences in RI and PI between left and right eyes. Values also did not significantly differ among males and females. The RI and PI in long posterior ciliary arteries of cats anaesthetised with butorphanol, medetomidine and ketamine were significantly lower than those of healthy conscious cats. There was no correlation between impedance indices and body weight.

Keywords: anaesthesia; cat; eye; posterior ciliary artery; resistive index; pulsatility index

Published: January 31, 2017  Show citation

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Vrbovska T, Hornakova L, Drahovska Z, Kozar M, Trbolova A. The use of colour Doppler imaging to determine the effects of administration of butorphanol, medetomidine and ketamine on indices of feline ocular impedance. Vet Med - Czech. 2017;62(1):35-40. doi: 10.17221/77/2016-VETMED.
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    References

    1. Choi H, Lee Y, Yeon S, Lee H, Lee H (2011): Effects of anti-glaucoma drugs on resistive index of the medial long posterior ciliary artery using color Doppler imaging in Beagle dogs. Journal of Veterinary Science 12, 99-101. Go to original source... Go to PubMed...
    2. Ferrandis I, Jakovljevic S, Aprea F, Corletto F (2013): Effect of two sedative protocols and hepatosplenic disease on Doppler indices of splenic arteries in dogs: A preliminary study. Veterinary Journal 197, 713-716. Go to original source... Go to PubMed...
    3. Gelatt-Nicholson KJ, Gelatt KN, MacKay E, Brooks DE, Newell SM (1999a): Doppler imaging of the ophtalmic vasculature of the normal dog: blood velocity measurements and reproducibility. Veterinary Ophthalmology 2, 87-96. Go to original source... Go to PubMed...
    4. Gelatt-Nicholson KJ, Gelatt KN, MacKay E, Brooks DE, Newell SM (1999b): Comparative Doppler imaging of the ophthalmic vasculature in normal Beagles and Beagles with inheredited primary open-angle glaucoma. Veterinary Ophthalmology 2, 97-105. Go to original source... Go to PubMed...
    5. Goncalves GF, Pippi NL, Leme MC, Custodio AT, da Silva AV, Romagnolli P, Pachaly JR, Bottin JMP, Livero FA (2008): Correlation between arterial pressure and blood flow in the external ophthalmic artery in cats (Felis catus Linnaeus, 1758). Brazilian Journal of Veterinary Research and Animal Science 45, 57-66. Go to original source...
    6. Gonzalez EM, Rodriguez A, Garcia I (2001): Review of ocular ultrasonography. Veterinary Radiology and Ultrasound 42, 485-495. Go to original source... Go to PubMed...
    7. Lee H, Chang D, Lee Y, Eom K, Choi H, Seo K, Choi M, Yoon J (2002): Use of color Doppler imaging for determining the resistive index of the medial long posterior ciliary artery in clinically normal conscious dogs. American Journal of Veterinary Research 63, 211-214. Go to original source... Go to PubMed...
    8. Lee K, Choi M, Yoon J, Jung J (2004): Spectral waveform analysis of major arteries in conscious dogs by Doppler ultrasonography. Veterinary Radiology and Ultrasound 45, 166-171. Go to original source... Go to PubMed...
    9. Legarth J, Thorup E (1989): Characteristics of Doppler blood-velocity waveforms in a cardiovascular in vitro model. II. The influence of peripheral resistance, perfusion pressure, and blood flow. Scandinavian Journal of Clinical and Laboratory Investigation 49, 459-464. Go to original source... Go to PubMed...
    10. Liu CJ, Chou Y, Chou JC, Chiou HJ, Chiang SC, Liu JH (1997): Retrobulbar haemodynamic changes studied by colour Doppler imaging in glaucoma. Eye 11, 818-826. Go to original source... Go to PubMed...
    11. Macri F, Pugliese M, Di Petro S, Coco MA, Liotta L, Niutta PP, Nardi S, Quartuccio M, Lanteri G, Piccionello AP (2015): Doppler ultrasonographic estimation of renal resistive index in horse: Comparison between left and right kidneys. Journal of Equine Veterinary Science 35, 111-115. Go to original source...
    12. Nassr MA, Morris CL, Netland PA, Karcioglu ZA (2009): Intraocular pressure change in orbital disease. Survey of Ophthalmology 54, 519-544. Go to original source... Go to PubMed...
    13. Novellas R, Espada Y, Ruiz de Gopegui R (2007a): Doppler ultrasonographic estimation of renal and ocular resistive and pulsatility indices in normal dogs and cats. Veterinary Radiology and Ultrasound 48, 69-73. Go to original source... Go to PubMed...
    14. Novellas R, Ruiz de Gopegui R, Espada Y (2007b): Effect of sedation with midazolam and butorphanol on resistive and pulsatility indices in healthy dogs. Veterinary Radiology and Ultrasound 48, 276-280. Go to original source... Go to PubMed...
    15. Ostrowska J, Kielbowicz Z, Zaleska-Dorobisz U, Atamaniuk W, Pietsch-Fulbiszewska A, Kinda W (2016): Resistive index (RI) obtained in renal interlobar arteries of normal dogs and cats by means of Doppler ultrasonography. Pakistan Veterinary Journal 36, 45-48.
    16. Pozniak MA, Kelcz F, Stratta RJ, Oberley TD (1988): Extraneous factors affecting resistive index. Investigative Radiology 23, 899-904. Go to original source... Go to PubMed...
    17. Sindak N, Ozturk A, Biricik HS (2003): Color Doppler Imaging of the internal ophthalmic and long posterior ciliary arteries in the dog. Turkish Journal of Veterinary and Animal Sciences 27, 1219-1224.
    18. Szatmari V, Sotonyi P, Voros K (2001): Normal duplex Doppler waveform of major abdominal blood vessels in dogs: A review. Veterinary Radiology and Ultrasound 42, 93- 107. Go to original source... Go to PubMed...

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