• 1
    Edwards WD, Edwards JE. Clinical primary pulmonary hypertension: Three pathologic types. Circulation 1977;56:884888.
  • 2
    Rich S, Braunwald E, Grossman W. Pulmonary hypertension. In: BraunwaldE, ed. Heart Disease. A Textbook of Cardiovascular Medicine, 5th ed. Philadelphia , PA : WB Saunders; 1997: 780806.
  • 3
    Winter H. The pathology of canine dirofilariasis. Am J Vet Res 1959;20:366371.
  • 4
    Castleman WL, Wong MM. Light and electron microscopic pulmonary lesions associated with retained microfilariae in canine occult dirofilariasis. Vet Pathol 1982;19:355364.
  • 5
    Sasaki Y, Kitagawa H, Hirano Y. Relationship between pulmonary arterial pressure and lesions in the pulmonary arteries and parenchyma, and cardiac valves in canine dirofilariasis. J Vet Med Sci 1992; 54:739744.
  • 6
    McManus EC, Pulliam JD. Histopathologic features of canine heartworm microfilarial infection after treatment with ivermectin. Am J Vet Res 1984;45:9197.
  • 7
    O'Grady MR. Pulmonary hypertension in dogs with mitral re-gurgitation. 12th Annual American College of Veterinary Medicine Forum, San Francisco, CA, June 25, 1994.
  • 8
    Turk JR, Miller JB, Sande RD. Plexogenic pulmonary arteriopathy in a dog with ventricular septal defect and pulmonary hypertension. J Am Anim Hosp Assoc 1982;18:608612.
  • 9
    Oswald GP, Orton EC. Patent ductus arteriosus and pulmonary hypertension in related Pembroke Welsh Corgis. J Am Vet Med Assoc 1993;202:761764.
  • 10
    Lehmkuhl LB, Ware WA, Bonagura JD. Mitral stenosis in 15 dogs. J Vet Intern Med 1994;8:217.
  • 11
    Berger M, Haimowitz A, Van Tosh A, et al. Quantitative assessment of pulmonary hypertension in patients with tricuspid regurgitation using continuous wave Doppler ultrasound. J Am Coll Cardiol 1985;6:359365.
  • 12
    Hatle L, Angelsen B. Doppler Ultrasound in Cardiology: Physical Principles and Clinical Application. Philadelphia , PA : Lea & Febiger; 1982: 113116.
  • 13
    Thomas WP, Gaber CE, Jacobs GJ, et al. Recommendations for standards in transthoracic two-dimensional echocardiography in the dog and cat. J Vet Intern Med 1993;7:247252.
  • 14
    Martin-Duran R, Larman M, Trugeda A, et al. Comparison of Doppler-determined elevated arterial pressure with pressure measured at cardiac catheterization. Am J Cardiol 1986;57:859863.
  • 15
    Uehara Y An attempt to estimate pulmonary artery pressure in dogs by means of pulsed Doppler echocardiography. J Vet Med Sci 1993;55:307312.
  • 16
    Jardin F, Dubourg O, Bourdarias JP Echocardiographic pattern of acute cor pulmonale. Chest 1997;111:209217.
  • 17
    Tucker A, McMurtry IF, Reeves JT, et al. Lung vascular smooth muscle as a determinant of pulmonary hypertension at altitude. Am J Physiol 1975;228:762767.
  • 18
    Fletcher EC, Luckett RA, Miller T, et al. Pulmonary vascular hemodynamics in chronic lung disease patients with and without oxyhemoglobin desaturation during sleep. Chest 1989;95:757764.
  • 19
    Schulman DS, Matthay RA. The right ventricle in pulmonary disease. Cardiol Clin 1992;10:111135.
  • 20
    Maksimowich DS, Mupanomunda M, Williams JF, Kaiser L. Effect of heartworm infection on in vitro contractile response of canine pulmonary artery and vein. Am J Vet Res 1997;58:394397.
  • 21
    Voelkel NF, Tuder RM. Cellular and molecular mechanisms in the pathogenesis of pulmonary hypertension. Eur Respir J 1995;8:21292138.
  • 22
    Nazeyrollas P, Mertz D, Chapoutot L, et al. Diagnostic accuracy of echocardiography-Doppler in acute pulmonary embolism. Int J Cardiol 1995;47:273280.
  • 23
    West JB, Mathieu-Costello O. Vulnerability of pulmonary capillaries in heart disease. Circulation 1995;92:622631.
  • 24
    Calvert CA, Jacobs GJ, Pickus CW Bradycardia-associated episodic weakness, syncope, and aborted sudden death in cardiomyopathic Doberman Pinschers. J Vet Intern Med 1996;10:8893.
  • 25
    Gomez A, Unruh H, Mink SN. Altered left ventricular chamber stiffness and isovolumic relaxation in dogs with chronic pulmonary hypertension caused by emphysema. Circulation 1993;87:247260.
  • 26
    Tilley LP Essentials of Canine and Feline Electrocardiography, 3rd ed. Philadelphia , PA : Lea & Febiger; 1992: 6668.
  • 27
    Abramson SV, Burke JF, Kelly JJ, et al. Pulmonary hypertension predicts mortality and morbidity in patients with dilated cardiomyopathy. Ann Intern Med 1992;116:888895.