Pulmonary hypertension as a cause of atrial fibrillation in young horses: four cases (1980-1989).

TitlePulmonary hypertension as a cause of atrial fibrillation in young horses: four cases (1980-1989).
Publication TypeJournal Article
Year of Publication1991
AuthorsGelberg HB, Smetzer DL, Foreman JH
JournalJournal of the American Veterinary Medical Association
Volume198
Issue4
Pagination679-82
Date Published1991 Feb 15
ISSN0003-1488
KeywordsAnimals, Atrial Fibrillation, Female, Horse Diseases, Horses, Hypertension, Pulmonary, Male, Retrospective Studies
Abstract

Four young horses of various breeds and suffering from atrial fibrillation died of heart failure. All had markedly high pulmonary arterial pressure, right-sided cardiomegaly, and lack of histologic lesions in the right atrium or pulmonary parenchyma. Three horses had hypertrophy and/or necrosis of the tunica media of the pulmonary vasculature. Clinical signs of disease, physiologic data, and pathologic findings indicated that these horses had primary pulmonary hypertension with secondary right-sided cardiac ventricular hypertrophy and dilatation, atrial fibrillation, and heart failure.

Alternate JournalJ. Am. Vet. Med. Assoc.