• 1
    Boon J., Wingfield WE, Miller CW. Echocardiographic indices in the normal dog. Vet Radiol 1984;24:214221.
  • 2
    Lombard CW. Normal values of the canine M-mode echocardio-gram. Am J Vet Res 1984;45:20152018.
  • 3
    Jacobs G., Mahjoob K. Multiple regression analysis, using body size and cardiac cycle length, in predicting echocardiographic variables in dogs. Am J Vet Res 1988;49:12901294.
  • 4
    de Madron E. Mise au point sur les valeurs echocardiographiques TM normales chez le chien. Prat Med Chirurg Anim Compagnie 1995; 30:647657.
  • 5
    Della Torre PK, Kirby AC, Church DB, Malik R. Echocardio-graphic measurements in Greyhounds, Whippets and Italian Greyhound dogs with a similar conformation but different size. Aust Vet J 2000;78:4955.
  • 6
    Kittleson MD, Kienle RD. Small animal cardiovascular medicine. St. Louis , MO : Mosby; 1998: 104.
  • 7
    Rishniw M., Erb HN. Evaluation of four 2-dimensional echocar-diographic methods of assessing left atrial size in dogs. J Vet Intern Med 2000;14:429435.
  • 8
    Bonagura JD, O'Grady MR, Herring DS. Echocardiology: Principles of interpretation. Vet Clin North Am Small Anim Pract 1985; 15:11771194.
  • 9
    Boon J. Handy Reference Veterinary Echocardiography. Jackson , WY : Teton New Media; 2000: 815.
  • 10
    Ware WA. Diagnostic tests for the cardiovascular system. In: NelsonRW, CoutoCG, eds. Essentials of Small Animal Internal Medicine, 2nd ed. St. Louis , MO : Mosby-Yearbook; 1998: 39.
  • 11
    Gonçalves AC, Orton EC, Boon JA, Salman MD. Linear, logarithmic, and polynomial models of M-mode echocardiographic measurements in dogs. Am J Vet Res 2002;63:994999.
  • 12
    Bonagura JD, Luis Fuentes V. Echocardiography. In: EttingerSJ, FeldmanEC, eds. Textbook of Veterinary Internal Medicine, 5th ed. Philadelphia , PA : WB Saunders; 2000: 849852.
  • 13
    Morrison SA, Moïse NS, Scarlett J., et al. Effect of breed and body weight on echocardiographic values in four breeds of dogs of differing somatotype. J Vet Intern Med 1992;6:220224.
  • 14
    Moïse NS, Fox PR. Echocardiography and Doppler imaging. In: FoxPR, SissonD., MoïseNS, eds. Textbook of Canine and Feline Cardiology: Principles and Clinical Practice, 2nd ed. Philadelphia , PA : WB Saunders; 1999: 145.
  • 15
    Brown DJ, Rush JE, MacGregor J., et al. M-mode echocardio-graphic ratio indices in normal dogs, cats and horses: A novel quantitative method. J Vet Intern Med 2003;17:653662.
  • 16
    Godfrey K. Simple linear regression in medical research. N Engl J Med 1985;313:16291636.
  • 17
    Snedecor GW, Cochran WG. Statistical methods, 6th ed. Ames , IA : Iowa State University Press; 1967: 135171.
  • 18
    BrownJH, WestGB, eds. Scaling in Biology. New York , NY : Oxford University Press; 2000: 4.
  • 19
    Schmidt-Nielsen K. Scaling, Why is Animal Size so Important? New York , NY : Cambridge University Press; 1984: 1114.
  • 20
    McMahon TA, Bonner JT. On Size and Life. New York , NY : Scientific American Library; 1983: 38.
  • 21
    Holt JP, Rhode EA, Peoples SA, Kines H. Left ventricular function in mammals of greatly different size. Circ Res 1962;10:798806.
  • 22
    Holt JP, Rhode EA, Kines H. Ventricular volumes and body weight in mammals. Am J Physiol 1968;215:704715.
  • 23
    Stahl WR. Scaling of respiratory variables in mammals. J Appl Physiol 1967;22:453460.
  • 24
    Gutgesell HP, Rembold CM. Growth of the human heart relative to body surface area. Am J Cardiol 1990;65:662668.
  • 25
    Holt JP, Rhode EA, Kines H. Geometric similarity of aorta venae cavae, and certain of their branches in mammals. Am J Physiol 1981;241:R100R104.
  • 26
    Batterham AM, George KP, Whyte G., et al. Scaling cardiac structural data by body dimensions: A review of theory, practice and problems. Int J Sports Med 1999;20:495502.
  • 27
    Sisson D., Schaeffer D. Changes in linear dimensions of the heart, relative to body weight, as measured by M-mode echocardiog-raphy in growing dogs. Am J Vet Res 1991; 52: 15911596.
  • 28
    Voogd PJ, Rijsterborgh H., Van Zwieten G., Lubsen J. Percen-tiles of echocardiographic dimensions in healthy children and young adolescents. In: LancéeCT, ed. Echocardiology. Proceedings of the Third Symposium on Echocardiology. The Hague , The Netherlands : Martinus Nijhoff Publishers; 1979: 299307.
  • 29
    Bayón A., Fernández del Palacio MJ, Montes AM, Gutiérrez Panizo C. M-mode echocardiography study in growing Spanish mastiffs. J Small Anim Pract 1994;35:473479.
  • 30
    Korcarz CE, Padrid PA, Shroff SG, et al. Doppler echocardio-graphic reference values for healthy rhesus monkeys under ketamine hydrochloride sedation. J Med Primatol 1997;26:287298.
  • 31
    Gooding JP, Robinson WF, Mews GC. Echocardiographic assessment of left ventricular dimensions in clinically normal English Cocker Spaniels. Am J Vet Res 1986;47:296300.
  • 32
    de Madron E. Aspects échocardiographiques normaux du coeur de chien. Prat Med Chirurg Anim Compagnie 1983;18:3951.
  • 33
    Mashiro I., Nelson RR, Cohn JN, Franciosa JA. Ventricular dimensions measured noninvasively by echocardiography in the awake dog. J Appl Physiol 1976;41:953959.
  • 34
    Häggström J., Hansson K., Kvart C., et al. Secretion patterns of the natriuretic peptides in naturally acquired mitral regurgitation attributable to chronic valvular disease in dogs. J Vet Cardiol 2000; 2: 716.
  • 35
    Vollmar AC. Echocardiographic measurement in the Irish Wolfhound: Reference values for the breed. J Am Anim Hosp Assoc 1999; 35:271277.
  • 36
    Wey AC, Thomas WP. Dobutamine stress echocardiography in normal adult dogs. J Vet Intern Med 2000;14:336.
  • 37
    Armitage P., Berry G. Statistical Methods in Medical Research, 4th ed. Oxford , UK : Blackwell Science; 2002: 203.
  • 38
    Stepien RL, Hinchcliff KW, Constable PD, Olson J. Effect of endurance training on cardiac morphology in Alaskan Sled Dogs. J Appl Physiol 1998;85:13681375.
  • 39
    Crippa L., Ferro E., Melloni E., et al. Echocardiographic parameters and indices in the normal Beagle dog. Lab Anim 1992; 26: 190195.
  • 40
    Hanton G., Geffray B., Lodola A. Echocardiography, a non-invasive method for the investigation of heart morphology and function in laboratory dogs: 1. Method and reference values for M-mode parameters. Lab Anim 1998; 32: 173182.
  • 41
    Herrtage M. Echocardiographic measurements in the normal Boxer. Proceeding 4th European Society of Veterinary Internal Medicine Annual Congress, 1994: 172173.
  • 42
    Vollmar A. Kardiologische untersuchungen beim Deerhound, referenzwerte für die echodiagnostik. Kleintierpraxis 1998; 43: 497508.
  • 43
    Calvert CA, Brown J. Use of M-mode echocardiography in the diagnosis of congestive cardiomyopathy in Doberman Pinschers. J Am Vet Med Assoc 1986;189:293297.
  • 44
    Sottiaux J., Amberger C. Normal echocardiographic values in the Doberman Pinscher (French breeding). Eur Soc Vet Cardiol Newsl 1997.
  • 45
    Koch J., Pedersen HD, Jensen AL, Flagstad A. M-mode echo-cardiographic diagnosis of dilated cardiomyopathy in giant breed dogs. J Vet Med 1996;43(Series A):297304.
  • 46
    Page A., Edmunds G., Atwell RB. Echocardiographic values in the greyhound. Aust Vet J 1993;70:361364.
  • 47
    Snyder PS, Sato T., Atkins CE. A comparison of echocardio-graphic indices of the nonracing healthy greyhound to reference values from other breeds. Vet Radiol Ultrasound 1995;36:387392.
  • 48
    Baade H., Schober K., Oechtering G. Echokardiographische Re-ferenzwerte beim West Highland White Terrier unter besonderer Berücksichtigung der Rechtsherzfunktion. Tierärztl Prax Ausg K Klein-tiere Heimtiere 2002;30:172179.
  • 49
    Tidholm A., Häggström J., Hannson K. Effects of dilated car-diomyopathy on the renin-angiotensin-aldosterone system, atrial na-triuric peptide activity, and thyroid hormone concentrations in dogs. Am J Vet Res 2001;62:961967.
  • 50
    Minors SL, O'Grady MR. Resting and dobutamine stress echo-cardiographic factors associated with the development of occult dilated cardiomyopathy in healthy Doberman Pinscher dogs. J Vet Intern Med 1998;12:369380.
  • 51
    Gaasch WH. Left ventricular radius to wall thickness ratio. Am J Cardiol 1979;43:11891194.
  • 52
    Brownlie SE, Cobb MA. Observations on the development of congestive heart failure in Irish Wolfhounds with dilated cardiomy-opathy. J Small Anim Pract 1999;40:371377.
  • 53
    Pombo JF, Troy BL, Russell RO Jr. Left ventricular volumes and ejection fraction by echocardiography. Circulation 1971; 43: 480490.
  • 54
    Troy BL, Pombo J., Rackly CE. Measurement of left ventricular wall thickness and mass by echocardiography. Circulation 1972; 45: 602611.
  • 55
    Moïse NS. Echocardiography. In: FoxPR, ed. Canine and Feline Cardiology, 1st ed. New York , NY : Churchill Livingstone; 1988: 146.
  • 56
    Bonagura JD, Luis Fuentes V. Echocardiography. In: EttingerSJ, FeldmanEC, eds. Textbook of Veterinary Internal Medicine, 5th ed. Philadelphia , PA : WB Saunders; 2000: 860.
  • 57
    Dukes-McEwan J., French AT, Corcoran BM. Doppler echocar-diography in the dog: Measurement variability and reproducibility. Vet Radiol Ultrasound 2002;43:144152.
  • 58
    Lonsdale RA, Labuc RH, Robertson ID. Echocardiographic parameters in training compared with non-training Greyhounds. Vet Ra-diol Ultrasound 1998;39:325330.
  • 59
    Batterham AM, George KP. Modeling the influence of body size and composition on M-mode echocardiographic dimensions. Am J Physiol 1998;274:H701H708.
  • 60
    Litster AL, Buchanan JW. Radiographic and echocardiographic measurements of the heart in obese cats. Vet Radiol Ultrasound 2000; 41:320325.
  • 61
    Verwaerde P., Sénard JM, Galinier M., et al. Changes in short-term variability of blood pressure and heart rate during the development of obesity-associated hypertension in high-fat fed dogs. J Hy-pertens 1999;17:11351143.
  • 62
    Jacobs G., Knight DH. M-mode echocardiographic measurements in nonanesthetized healthy cats: Effects of body weight, heart rate and other variables. Am J Vet Res 1985;46:17051711.
  • 63
    Jacobs G., Mahjoob K. Influences of alterations in heart rate on echocardiographic measurements in the dog. Am J Vet Res 1988; 49: 548552.
  • 64
    Noble MI, Wyler J., Milne EN, et al. Effect of changes in heart rate on left ventricular perfomance in conscious dogs. Circ Res 1969; 24:285295.
  • 65
    DeMaria AN, Neumann A., Schubart PJ, et al. Systematic correlation of cardiac chamber size and ventricular performance determined with echocardiography and alterations in heart rate in normal persons. Am J Cardiol 1979;43:19.
  • 66
    Sleeper MM, Henthorn PM, Vijayasarathy HC, et al. Dilated cardiomyopathy in juvenile Portuguese Water Dogs. J Vet Intern Med 2002;16:5262.
  • 67
    Chaves AA, Weinstein DM, Bauer JA. Non-invasive echocar-diographic studies in mice. Influence of anesthetic regimen. Life Sci 2001; 69: 213222.
  • 68
    Dunkle N., Moïse S., Scarlett-Kranz J., Short CE. Cardiac performance in cats after administration of xylazine or xylazine and gly-copyrrolate: Echocardiographic evaluations. Am J Vet Res 1986; 47: 22122216.
  • 69
    Dümmel C., Neu H., Hüttig A., Failing K. Echokardiographische referenzberieiche von sedierten katzen. Tierärzl Prax 1996; 24: 190196.
  • 70
    Fox PR, Bond BR, Peterson ME. Echocardiographic reference values in healthy cats sedated with ketamine hydrochloride. Am J Vet Res 1985;46:14791484.
  • 71
    Moïse NS, Horne WA, Flanders JA, Strickland D. Repeatability of the M-mode echocardiogram and the effects of acute changes in heart rate, cardiac contractility, and preload in healthy cats sedated with ketamine hydrochloride and acepromazine. Cornell Vet 1986; 76: 241258.
  • 72
    Allen DG. Echocardiographic study of the anesthetized cat. Can J Comp Med 1982;46:115122.
  • 73
    Allen DG, Nymeyer D. A preliminary investigation on the use of thermodilution and echocardiography as an assessment of cardiac function in the cat. Can J Comp Med 1983;47:112117.
  • 74
    Jacobs G., Knight DH. Change in M-mode echocardiographic values in cats given ketamine. Am J Vet Res 1985;46:17121713.
  • 75
    Marini RP, Li X., Harpster NK, Dangler C. Cardiovascular pathology possibly associated with ketamine/xylazine anesthesia in Dutch belted rabbits. Lab Anim Sci 1999;49:153160.
  • 76
    Rand JS, Reynolds WT, Priest J. Echocardiographic evaluation of the effects of medetomidine and xylazine in dogs. Aust Vet J 1996; 73:4144.
  • 77
    Yang XP, Liu YH, Rhaleb NE, et al. Echocardiographic assessment of cardiac function in conscious and anesthetized mice. Am J Physiol 1999;277:H1967H1974.
  • 78
    Buchanan JW. Prevalence of cardiovascular disorders. In: FoxPR, SissonD., MoiseNS, eds. Canine and Feline Cardiology, 2nd ed. Philadelphia , PA : WB Saunders; 1999: 457470.
  • 79
    Sahn D., DeMaria A., Kisslo J., Weyman A. Recommendations regarding quantitation in M-mode echocardiography: Results of a survey of echocardiographic measurements. Circulation 1978; 58: 10721083.