Littlejohn, A.Bowles, FelicityBigalke, R.D.Cameron, Colin McKenzieGilchrist, Frances M.C.Morren, A.J.Verster, Anna J.M.Walker, Jane B.Verwoerd, Daniel WynandSteyn, P.J.J.2016-07-072016-07-0720161980Littlejohn, A & Bowles, F 1980, 'Studies on the physiopathology of chronic obstructive pulmonary disease in the horse. III. The intrathoracic pressure’, Onderstepoort Journal of Veterinary Research, vol. 47, no. 4, pp. 193-196.0330-2465http://hdl.handle.net/2263/54062The 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.The intrathoracic pressure was determined by direct intrapleural cannulation in 17 clinically normal horses and 14 horses with chronic obstructive pulmonary disease (COPD). There were significant differences between the normal and COPD horses with regard to max. Ppl and max. Ppl. The mean values for minimum Ppl of the 2 groups of subjects were not significantly different. The results were discussed in relation to those of other workers.en©1980 ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©2016 University of Pretoria Department of Library Services (digital).Veterinary medicineVeterinary medicine -- South AfricaArticle