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J Vet Intern Med. 2011 Jul-Aug;25(4):861-5. doi: 10.1111/j.1939-1676.2011.00735.x. Epub 2011 May 25.

White-coat effect on systemic blood pressure in retired racing Greyhounds.

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  • 1Department of Veterinary Clinical Sciences, The Ohio State University College of Veterinary Medicine, Columbus, OH, USA.



Greyhounds are known to have a higher systemic arterial blood pressure (BP) than non-Greyhound dogs.


The purpose of this study was to determine whether the high systemic BP was because of the white-coat effect.


Twenty-two healthy retired racing Greyhounds (RRG) enrolled in a blood donation program.


We prospectively measured systemic BP in 3 environments: in the hospital by the investigator (Hosp), in the home by the investigator (H/I), and in the home by the owner (H/O). Five serial measurements of systolic, diastolic, and mean arterial pressures (SAP, DAP, MAP) as well as heart rate (HR) were measured by an oscillometric method on the distal forelimb and distal hind limb in all 3 environments.


There was a significant difference for SAP, MAP, and HR between the Hosp and both H/I and H/O (P < .001); there were no significant differences for any of the parameters between the H/I and H/O environments. HR, but not SAP, MAP, or DAP (P < .05) decreased in RRG with multiple hospital visits for blood donation before this study. The hind limb SAP was significantly higher than the forelimb SAP (P < .05).


We conclude that the high SAP, MAP, and HR seen in the hospital setting are likely because of a white-coat effect. Furthermore, consideration should be given to defining the parameters of normal BP in RRG according to the environment in which they are obtained.

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