Aus dem Fachgebiet Allgemeine Radiologie und Medizinische ...

Summary 96
The measurements were performed from June to November. Leg volume changes
were significantly different at low (1-12°C) compared to high (23-31°C) temperatures.
The volume changes turned out to be significant smaller at lower temperatures. High
temperatures could have influenced the distribution of fluid within the blood vessels
and lymph vessels by the exposure of circulation. In addition, non visible edema
could have been temporarily removed at high temperatures.
Male horses had higher changes of the volume than females.
Training condition and running direction did not significantly influence differences of
limb volume at values (I), (II) and (III). Well trained horses showed lower volume
changes than less trained horses. Probably well trained horses were able to better
compensate the lymphatic and bloodvascular load of fluid.
For the measurements, the measurement frame of the Perometer ® had been rebuilt
to suit veterinary medical purposes in that it can be opened. This is a great
advantage when operating with horses. The nearly soundless measuring process
proved to be another advantage.
The reproducibility of measurement was calculated by the ICC (Interclass Correlation
Coefficient), which showed a low measuring error of 0,996. The ANOVA (Analysis of
Variance) showed no significant differences between the three measurements that
were taken per leg in each case. The Perometer ® can, therefore, be said to give
highly reproducible values. Tested on horses, the Perometer ® is a reliable and
convenient tool for the measurement of limb volume. 90 percent of the examined
horses accepted the optoelectronic scanner without any problems.
In conclusion, on horses the Perometer ® can be used for scientific purposes, as well
as for quantifying leg edema and monitoring edema therapy. Based on the results of
this study, it could be possible to identify an early stage of lymphedema by using the
Perometer ® in further experiments. To review the specific causes of limb volume
changes, for example, ultrasonographic and lymphographic researches should be
added.