Littlejohn, A.Bowles, FelicityBigalke, R.D.Cameron, Colin McKenzieGilchrist, Frances M.C.Morren, A.J.Verster, Anna J.M.Verwoerd, Daniel WynandWalker, Jane B.Steyn, P.J.J.2016-07-072016-07-0720161980Littlejohn, A & Bowles, F 1980, 'Studies on the physiopathology of chronic obstructive pulmonary disease in the horse. II. Right heart haemodynamics’, Onderstepoort Journal of Veterinary Research, vol. 47, no. 3, pp. 187-192.0330-2465http://hdl.handle.net/2263/54164The articles have been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Pressure curves obtained by cardiac catheterization of the pulmonary artery, right ventricle and right atrium of 9 horses and ponies with chronic obstructive pulmonary disease (COPD) were compared with those similarly recorded from 6 clinically normal control subjects. The mean pulmonary peak systolic, pulmonary minimum diastolic and ventricular peak systolic pressures of the COPD subjects were significantly higher (P< 0,01) than the corresponding mean pressures of the clinically normal control subjects. The mean pressures calculated from pressure curves obtained from 8 Thoroughbreds in training did not differ significantly from those of the clinically normal subjects not in training.en©1980 ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©2016 University of Pretoria Department of Library Services (digital).Horses -- DiseasesPulmonary diseaseVeterinary medicine -- South AfricaArticle