Field screening of murmurs and arrhythmias in performance Argentine polo ponies

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Pemika Issariyodom
Angkana Kidtiwong
Kannika Na Lampang
Wanpitak Pongkan
Porrakote Rungsri


Polo is a high-intensity sport, and the horses who participate in it are known to receive a high workload on their hearts. Having cardiac disorders can impair their athletic performance or even increase the risk of collapsing during the game. In sport horses, murmurs and arrhythmias are commonly-found physiological conditions; nevertheless, many of them are related to heart diseases. Though numerous studies on murmurs and arrhythmias have been done among several kinds of horses, the information in polo horses is still limited. This study was done to investigate the prevalence of murmurs and arrhythmias in performance Argentine polo ponies by field screening with fast and convenient methods. A hundred and ninety-six performance Argentine polo ponies (162 mares and 34 geldings) with ages between 6 – 20 years old were included in this study. Cardiac auscultation with a simple stethoscope was done to detect and grade murmurs, and electrocardiography with an iPhone ECG (electrocardiogram) recorder was done at the same time to find if there were any arrhythmias. The results showed 98 ponies (50%) that probably had cardiac abnormalities, these could be divided into 61 ponies (31.1%) with only murmurs, 18 ponies (9.2%) with only arrhythmias, and 19 ponies (9.7%) with both murmurs and arrhythmias. In conclusion, murmurs and arrhythmias were found frequently by field screening of this study; cardiac examination should not be overlooked, and those ponies with murmurs and/or arrhythmias should be examined further to determine whether they were pathologic or not.


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Issariyodom, P. ., Kidtiwong, A. ., Na Lampang, K. ., Pongkan, W. ., & Rungsri, P. . (2022). Field screening of murmurs and arrhythmias in performance Argentine polo ponies: Veterinary Integrative Sciences, 20(1), 147–162. Retrieved from
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Barbesgaard, L., Buhl, R., Meldgaard, C., 2010. Prevalence of exercise‐associated arrhythmias in normal performing dressage horses. Equine Vet. J. 42, 202-207.

Bello, C.A.O., Dumont, C.B.S., Barreto-Vianna, A.R.C., Lima, E.M.M., 2014. Exercise-induced cardiac fatigue in low handicap polo horses. Arch. Med. Vet. 46(3),413-417.

Buhl, R., Meldgaard, C., Barbesgaard, L., 2010. Cardiac arrhythmias in clinically healthy showjumping horses. Equine Vet. J. 42, 196-201.

Carroll, C.L., Huntington, P.J., 1988. Body condition scoring and weight estimation of horses.Equine Vet. J. 20(1), 41-45.

Costa, C.F., Samesima, N., Pastore, C.A., 2014. Comparison of dubois and base-apex lead methods to calculate QRS angle (Mean Electrical Axis) in Thoroughbreds [Internet].In Proceedings of the 41st International Congress on Electrocardiology of the Heart Institute (InCor)–HCFMUSP, São Paulo (BR). 217-220.

Fakur, S., Mokhber, D.M., Nadalian, M.G., Lotfolahzadeh, S., 2010. The prevalence of cardiac arrhythmias in horses of the Sanandaj area. Iran J. Vet. Med. 4(4). 259-263.

Hewetson, M., 2013. Introduction to electrocardiography in the horse and recognition of common abnormalities. In Proceedings of the13th International Congress of World Equine Veterinary Association, Budapest, Hungary.

Jago, R., Keen, J., 2017. Identification of common equine cardiac murmurs. In Pract. 39(5),222-232.

Kraus, M.S., Rishniw, M., Divers, T.J., Reef, V.B., Gelzer, A.R., 2019. Utility and accuracy of a smartphone-based electrocardiogram device as compared to a standard base-apex electrocardiogram in the horse. Res. Vet. Sci. 125, 141-147.

Kriz, N.G, Hodgson, D.R., Rose, R.J., 2000. Prevalence and clinical importance of heart murmurs in racehorses. J. Am. Vet. Med. Assoc. 216(9), 1441-1445.

Leroux, A.A., Detilleux, J., Sandersen, C.F., Borde, L., Houben, R.M.A.C., Al Haidar, A., Art, T., Amory, H., 2013. Prevalence and risk factors for cardiac diseases in a hospital‐based population of 3,434 horses (1994–2011). J. Vet. Intern. Med. 27(6),1563-1570.

Marlin, D., Nankervis, K. 2002. Equine exercise physiology. Blackwell Science Ltd, Oxford,England, pp. 113-125.

Marr, C., Bowen, M. (Eds.)., 2011. Cardiology of the Horse. Elsevier Health Sciences, pp.91-104, 159-178.

Massie, S.L., Bezugley, R.J., McDonald, K.J., Leguillette, R., 2021. Prevalence of cardiac arrhythmias and RR interval variation in healthy horoughbred horses during official Chuckwagon races and recovery. Vet. J. 267, 105583.

Menzies-Gow, N., 2001. ECG interpretation in the horse. In Pract. 23(8), 454-459.

Mokhber Dezfouli, M., Mozaffari, M., Tavanaeimanesh, H., Vajhi, A., 2019. A survey on the prevalence of heart murmurs in polo horses. Iran J. Vet. Med. 13(2), 115-121.

Noszczyk-Nowak, A., Michałek, M., Kałuża, E., Cepiel, A., Pasławska, U., 2017. Prevalence of arrhythmias in dogs examined between 2008 and 2014. J. Vet. Res. 61(1), 103.

Patteson, M.W., Cripps, P.J., 1993. A survey of cardiac auscultatory findings in horses. Equine Vet. J. 25(5), 409-415.

Reef, V.B., 1995. Heart murmurs in horses: determining their significance with echocardiography. Equine Vet. J. 27(S19), 71-80.

Reef, V.B, Bonagura, J., Buhl, R., McGurrin, M.K.J., Schwarzwald, C.C., Van Loon, G.,Young, L.E., 2014. Recommendations for management of equine athletes with cardiovascular abnormalities. J. Vet. Intern. Med. 28(3), 749-761.

Serfass, P., Chetboul, V., Sampedrano, C.C., Nicolle, A., Benalloul, T., Laforge, H., Gau, C.,Hebert, C., Pouchelon, J.L., Tissier, R., 2006. Retrospective study of 942 small-sized dogs: Prevalence of left apical systolic heart murmur and left-sided heart failure, critical effects of breed and sex. J. Vet. Cardiol. 8(1), 11-18.

Slack, J., Boston, R.C., Soma, L.R., Reef, V.B., 2015. Occurrence of cardiac arrhythmias in Standardbred racehorses. Equine Vet. J. 47(4), 398-404.

Thrusfield, M.V., Aitken, C.G.G., Darker, P.G.G., 1985. Observations on breed and sex in relation to canine heart valve incompetence. J. Small Anim. Pract. 26(12), 709-717.

Vezzosi, T., Sgorbini, M., Bonelli, F., Buralli, C., Pillotti, M., Meucci, V., Tognetti, R., 2018. Evaluation of a smartphone electrocardiograph in healthy horses: comparison with standard base-apex electrocardiography. J. Equine Vet. Sci. 67, 61-65.

Young, L.E., Rogers, K., Wood, J.L.N., 2008. Heart murmurs and valvular regurgitation in thoroughbred racehorses: epidemiology and associations with athletic performance. J.Vet. Intern. Med. 22(2), 418-426.

Young, L.E., Wood, J.L.N., 2000. Effect of age and training on murmurs of atrioventricular valvular regurgitation in young Thoroughbreds. Equine Vet. J. 32(3), 195-199.

Zucca, E., Ferrucci, F., Stancari, G., Saporiti, T., Ferro, E., 2010. The prevalence of cardiac murmurs among Standardbred racehorses presented with poor performance. J. Vet.Med. Sci. 1001200135-1001200135.