285Equipment January - December 2021
This modest but perfectly crafted device outwardly shows
an LCD numeric display showing Systolic, Diastolic, Mean
Arterial Pressure and Pulse - however, this unit springsto-life
when coupled with a Windows Computer or Tablet
(Connection is by USB in the standard version and by
BlueTooth in the deluxe version)
The free lifetime software that comes with the system - shows
off the true nature of HDO's capabilities - you will now be able
to monitor in "real-time" pulse recognition waves and view the
laminar flow throughout the cuff deflation.
Double Check - Validation Graph
VET HDO™ MDPro® software will allow you to spot any
undue artefacts that may affect the reading (if you like it is
an operators visual double check to ensure that your data is
valid). No other system on the market would allow you to do
this. The Validation Graph allows you to feel comfortable with
Is it super simple to use?
HDO™ system is clever enough to know the pulse rate of the
patient and to automatically set its own parameters to give
you the best reading possible ie. for that specific patient.
VET HDO™ MDPro® works out the pulse rate and cardiac
output, and then adjusts the cuff deflation rate, and the gain
needed to view the pulse identification amplitudes, at the
So the answer is yes, HDO™ sets its own parameters so you
can concentrate on your patient throughout the reading.
Simply apply the cuff to the patient's base of the tail - no
need to shave (the Coccygeal Artery is the most suitable cuff
site for reliable BP measurement) - and press START.
(NB Cuffs can also be applied to the limbs if necessary)
HDO Pulse Wave Analysis (PWA) What is it all about?
Non-invasive PWA allows for the first time, to look for changes in SVR = systemic vascular resistance (Vasodilation, Vasoconstriction, Arteriosclerosis, etc.), to judge stroke volume (SV) and stroke volume
variances (SVV) , which is particularly of interest in patients with arrhythmias or any heart condition but not limited to mitral valve insufficiency , dilated and hypertrophic Cardiomyopathy. PWA in
combination with blood pressure is a very sensitive information on cardiac performance, helpful during anaesthesia, for diagnosis of disease as well as regarding the need and intensity of treatment and
In particular SVR is new information, easily available now to the front line practitioner. With only 1 day training, you can successfully learn how to interpret the pulse waves and what consequences need to
be taken. Thus much faster and easier than ECG!
The resulting information could be proven reliable against invasive Gold Standard for SVR, SV and SVV. (Egner, ECVIM pre-congress symposium of ESVNU&VBPS, 5th September 2012, Maastricht/NL).
(with VET HDO™ MDPro® Software)
The above PC screen shot of an actual HDO measurement shows:
Pre-systolic waves followed by amplitudes with slightly increasing
height. Then relaxation of the arterial wall then further more dominant
increases in height.
Then initiation (SAP) and increase of blood flow. Due to turbulent flow,
the amplitudes increases to a maximum, which is close to MAP.
The reading then shows a decrease of amplitude size due to a
change from turbulent to laminar flow - reaching DAP and finally, the
complete open artery.
Visual Assurance of Accuracy