The prevalence of irregularity in rhythm and heart sound in apparently healthy small ruminants

Document Type : Research Paper

Authors

1 Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran

2 Department of Internal Medicine, Faculty of Veterinary Medicine University of Tehran, Institute of Biomedical research, faculty of Veterinary Medicine, Tehran-Iran

3 Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, Shiraz, Iran

4 Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Institute of Biomedical research, University of Tehran, Tehran, Iran

5 Department of Food Hygiene and Quality Control,Faculty of Veterinary Medicine,University of Tehran,Tehran,Iran

Abstract

This study was conducted on 384 clinically healthy sheep and goats from farms around Tehran suburb. The animals were divided into two equal groups (according to species) and then assigned into three age groups, two gender groups and female animals into two groups: late pregnant and non-pregnant. Heart sounds were auscultated by two cardiologists and heart rate and probable murmurs were recorded. Using the base-apex lead, the electrocardiograms were taken. Three types of dysrhythmias including sinus tachycardia, sinus arrhythmia and atrial premature complex were observed. Regarding the incidence of dysrhythmias, there were significant statistical differences between the age and sex groups, but not between pregnant and non-pregnant animals. The mean heart rate of sheep and goats with sinus arrhythmia was significantly lower than those with regular cardiac rhythm (p<0.001). The prevalence of the murmurs in sheep and goats, which all were systolic, were 6.3% and 8.9%, respectively. Only one holosystolic murmur was detected in a sheep and the others were early to early-mid systolic murmurs. One murmur was detected with grade 3/5 in sheep and other murmurs were grade 1 and 2. The number of murmurs on the mitral valve was higher in age groups 1 (< 6 months) and 2 (6-12 months) compared to group 3 (> 12 months). But there was no significant relationship between the incidence of murmur and age, gender and pregnancy. The results of this study revealed that small ruminants have lower prevalence of dysrhythmias and murmurs compared to cattle and horses.

Keywords

References

References
Andersson, I. (2016). Behaviour and heart rate in sheep when herded by Border collies with different background.
Bélanger, M.C., & Côté, E. (2010). Innocent heart murmurs. Textbook of veterinary internal medicine.
Elsevier, St Louis. 7 th ed. PP: 255258.
Biancaniello,           T.         (2005).             Innocent murmurs. Circulation 111, 3, 20-22. Buczinski, S, & Bélanger, A.M. (2010). Bovine tricuspid endocarditis as a cause             of         increased         serum concentration of cardiac troponins. Can. Vet. J. 51, 2, 195-197
Chen, P.S, Lan S.C, & Lin, S.F. (2014). 40 -        Neural Activity           and      Atrial Tachyarrhythmias           A2       -           Zipes, Douglas            P.         In         Cardiac
Electrophysiology: From Cell to Bedside (Sixth Edition), edited by
José Jalife Philadelphia,PP: 399407.
Constable, P.D. Bonagura, J.D. Rings, D.M. & Jean, St. (1990). Clinical and electrocardiographic characterization of cattle with atrial premature complexes. J. Am. Vet. Med. Assoc. 197, 9, 1163-1169.
Constable, P.D., Hinchcliff, K.W., Done, S.H., & Gruenberg, W. (2017). Veterinary Medicine-E-BOOK: A textbook of the diseases of cattle, horses, sheep, pigs and goats: 11th ed. St Louis. Elsevier Health
Sciences. 
Frese, D.A. Thomason, J.D. Reinhardt, C.
Bartle, S. Rethorst, D. Loneragan, G.H. & Thomson, D. (2017).
Twenty-four hour Holter monitoring in finishing cattle housed outdoors.  J. Vet. Cardiol. 19, 2, 153-159.
Grimaldi, A., Capritti, E., Pappalardo, F.,
Radinovic,     A.,       Ferrarello,        S.,
Cammalleri,   V.,       Collu, E.,
Ammirati,      E.,        Fumero,           A.        &
Benussi, S. (2012). Blood cyst of the
mitral valve. J. Cardiovasc. Med.
13, 1, 46.
Hall, M.E., George, E.M. & Granger, JP.
(2011).The heart during pregnancy. 
Rev. Esp. Cardiol. (English Edition) 64, 11, 1045-1050.
Haskell, Scott R.R. (2011). Blackwell's five-minute veterinary        consult:
ruminant. 2th ed. John Wiley & Sons.  Koether, K., Ulian, C.M.V., Lourenço,
L.M.C., Gonçalves, R.S., Sudano, M.J., Cruz, R.K.S., Branchini, N., Alfonso, A. & Chiacchio, S.B.
(2015). The normal electrocardiograms in the conscious newborn lambs in neonatal period and its progression. BMC. Physiol. 16, 1, 1-12.
Kojouri, Gh., Karimi, I., & Afsharzadeh, M. (2005). Macroscopical and histopathological study on congenital heart anomalies of sheep in Shahrekord Pajouhesh-va-
Sazandegi. 18, 1, 80-84.
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.
Kurtoğlu, N. Uzunlar, B. Çevik, C. &
İncedere, O. (2005). A rare case: blood cyst of the mitral valve. 
Anatol. J. Cardiol. 5, 4, 346-346. 
Lopez-Pardo, F. J. Lopez-Haldon, C.
Granado-Sanchez, MJ. RodriguezPuras, & A. Martinez-Martinez. (2008). A heart inside the heart: blood cyst of mitral valve.
Echocardiography. 25, 8, 928-30. 
Madhavan, S.  Jayaprakash, K. Jayaprasad, N. Sathish, G. &
George, R. (2015). Blood cyst of the anterior mitral leaflet causing severe mitral regurgitation.  Proc (Bayl Univ Med Cent). 28, 3, 363-364.
Marr, C.M., and Bowen, I.M., (2010). Cardiology of the horse. Saunders Elsevier. 2th ed. PP: 67-249.
Ghadrdan Mashhadi, A., Haji Hajikolai, R., Rezakhani, A., Fatemi, R., & Kamali, S. (2014). The prevalence of cardiac arrhythmia in Khuzestan buffaloes (Bubalus bubalis).  Revue Méd. Vét 165, 3-4, 99-103.
McConnell, M.E. & Branigan, A. (2008). Innocent          Heart   Murmurs.         In Pediatric Heart Sounds, 13-25.
Springer.
Nagel, C., Aurich, J., Palm, F. & Aurich, C. (2011). Heart rate and heart rate variability in pregnant warmblood and Shetland mares as well as their fetuses. Anim. Reprod. Sci. 127, 3, 183-187.
Olsson, K., Hansson, A., Hydbring, E., von Walter L.W. & Häggstrom J. (2001). A serial study of heart function during pregnancy, lactation and the dry period in dairy goats using echocardiography.  Exp.
Physiol. 86, 1, 93-99.
Olsson, K., Hydbring, E. & Cvek, K. (1998). Cardiovascular and fluid regulatory mechanisms during pregnancy and lactation in small ruminants. Trends Comp.
Biochem.Physiol. 5, 283-296.
Pourjafar, M., Badiei, K., Chalmeh, A.A.,
Sanati, A.R., Bagheri, M.H., Badkobeh, M. & Shahbazi, A. (2011). Cardiac arrhythmias in clinically healthy newborn Iranian fat tailed lambs. Global. Veterinaria. 6, 2, 185-189.
Pourjafar, M., Badiei, K., Chalmeh, A.A.,
Sanati, A.R., Shahbazi, A., Badkobeh, M. & Bagheri, M.H. (2012). Age-related cardiac arrhythmias in clinically healthy Iranian Najdi goats. Bulg. J. Vet. Med. 15, 1, 37-43.
Pugh, D.G. & Baird, AN. (2012). Sheep and        goat     medicine.         Saunders
Elsevier, St. Louis, 2th ed. PP: 503-
505
Reef, VB. (1989). Frequency of cardiac arrhythmias and their significance in normal horses. Proc. 7th. ACIVM Forum.
Rezakhani, A., Godarzi, M. & Tabatabei Naeini, I. (2005). A combination of atrioventricular block and sinoatrial block in a horse.  Acta. Vet. Scand. 46, 3, 173-175.
Rezakhani, A., Paphan, A.A. & Gheisari, H.R. (2004). Cardiac dysrhythmias in clinically healthy heifers and cows. Revue Méd. Vét. 155, 3, 159162.
Rezakhani, A., Pirie, R.S. & Blissitt, K.J. (2010). Effects of age on the prevalence of cardiac dysrhythmias in ponies. I.J.VR.11, 3, 200-205.
Rezakhani, A. & Zarifi, M. (2007a). Auscultatory findings of cardiac murmurs in clinically healthy cattle. Online.J. Vet. Res. 11, 62-66.
Rezakhani, A. & Zarifi, M. (2007b). The prevalence of the third and fourth heart sounds in clinically healthy Holstein cattle.  Acta. Vet. Scand.
49, 1, 12.
Romeyer, A. & Bouissou, M.F. (1992). Assessment of fear reactions in domestic sheep, and influence of breed and rearing conditions. Appl. Anim. Behav. Sci. 34, 1, 93-119.
Samimi, A.S., Aghamiri, S.M., Tajik, J., Taheri, T. & Eshteraki, R. (2015). Analysis of cardiac arrhythmias and electrocardiographic indices of clinically healthy Saanen goats in different sexes and age groups.
Eurasian. J. Vet. Sci. 31, 4, 192-196.
Samimi, A.S., Tajik, J., Aghamiri, S.M.  &
Karimi, A. (2018). A serial evaluation of electrocardiographic indices and cardiac arrhythmias during pregnancy, lactation and dry periods in saanen goats. 21.1, 59-66.
Scott, P.R. (2015). Sheep medicine CRC Press, Florida, 2th ed. PP: 145
Sharifov,          O.F.,    Fedorov,          V.V., Beloshapko, G.G., Glukhov, A.V., Yushmanova,       A.V.    &
Rosenshtraukh, L.V. (2004). Roles of adrenergic and cholinergic stimulation in spontaneous atrial fibrillation in dogs. J. Am. Coll. Cardiol.43, 3, 483-490.
Shekarforoush, S.S., Rezakhani, A. & Katannejad, A. (2006). The prevalence of blood and serous cysts in the atrioventricular valves of the heart of cattle.  Revue. Méd. Vét. 157, 10, 477-480.
Smith, B.P. (2015). Large animal internal medicine.         Mosby             Elsevier,          St.
Louis, 5th ed. PP: 80-81.
Smith, M.C. & Sherman, D.M. (2011). Goat medicine: John Wiley & Sons. 2th ed. PP: 319-334
Syme, L.A. & Elphick, G.R. (1982). Heart-rate and the behaviour of sheep in yards.  Appl. Anim. Ethol. 9, 1, 31-35.
Tajik, J., Samimi, A.S., Shojaeepour, S. & Jarakani, S. (2016). Analysis of base-apex lead electrocardiogram in clinically healthy Kermani sheep. J.
 
Fac.Vet. Med. Istanbul Univ. 42, 1, 74-79.
Trenk, L. Kuhl, J. Aurich, J. Aurich, C. & Nagel, C. (2015). Heart rate and heart rate variability in pregnant dairy cows and their fetuses determined by fetomaternal electrocardiography. 
Theriogenology. 84, 8, 1405-1410.
Vandenheede, M. & Bouissou, M.F. (1993). Sex differences in fear reactions in sheep. Appl. Anim. Behav. Sci. 37, 1, 39-55.
Wren, C. (2012). Concise guide to pediatric arrhythmias. Wiley-
Blackwell. 1 edition. PP: 46
Yusuf, S. & Camm, A.J. (2005).
Deciphering the sinus tachycardias.
Clin. Cardiol. 28, 6, 267-276.
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. 72, 6, 781-785.
 
 
Iranian Journal of Ruminants Health Research
Volume 2, Issue 2
November 2017
Pages 75-92

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