Biology Reference
In-Depth Information
Table 16.2 Results of X-Strain
®
evaluations performed at
T
0
and
T
1
in each patient
X-Strain
®
Rad
S
(%)
Rad
SR
(1/s)
Endo
circ S
(%)
Endo
circ SR
(1/s)
Epi
circ S
(%)
Epi
circ
SR
(1/s)
Endo
rot
Displ
(
)
Endo
rad
Displ
(mm)
Epi
rot
Displ
(
)
Epi rad
Displ
(mm)
Case 1
T
0
5.61 1.13
3.34
0.5
2.48
0.37 1.29
1.4
0.61
1.29
T
1
12.67 1.37
6.83
0.65
3.73
0.43 2.36
2.19
0.85
1.95
Case 2
T
0
11.9
1.24
5.42
0.42
2.76
0.32 0.13
2.16
0.48
1.26
T
1
19
1.42
6.89
0.65
2.8
0.32 0.87
2.66
1.06
1.4
and the absence of pulmonic crackles; however, the same cardiac murmur that was
auscultated at
T
0
persisted. The results of the m-mode, b-mode (Table
16.1
), and
X-Strain
®
ultrasound evaluations (Table
16.2
), performed at
T
0
and
T
1
in each
patient, are reported in the indicated tables.
16.4 Discussion
The clinical and instrumental examinations performed in these two patients allowed
us to properly diagnose and choose the right treatment. Therapeutic success was
proven not only through ameliorating the clinical conditions of the subjects at
T
1
but also by the improvement in the echocardiographic indices at the same time.
Together, the m-mode, b-mode, and X-Strain
®
indices proved a reduction in the
internal dimensions of the left cardiac chambers and an increase in myocardial
contractility. In detail, the increase at
T
1
of the X-Strain
®
parameters, such as the
epi circ S, endo circ S, epi circ SR, and endo circ SR, also revealed improvement in
the circumferential movement of the left ventricle. In fact, torsion could not be
studied through the application of traditional mono- and two-dimensional
techniques. Although preliminary, the results of the present study suggest the
importance of including X-Strain
®
in routine echocardiographic evaluations of
patients affected by alterations in myocardial movement. Despite an increase in
examination time, the inclusion of X-Strain
®
in medical practice could be useful
both to better understand the pathogenesis of diseases characterized by alterations
in myocardial contractility and to increase the accuracy of patient monitoring
during follow-up to optimize the therapeutic protocol as well as to identify the
reference limits of X-Strain
®
indices in the dog.
References
Buckberg GD (2002) Basic science review: the helix and the heart. J Thorac Cardiovasc Surg
124:863-883
D'Andrea A, Caso P, Romano S, Scarafile R, Cuomo S, Salerno G, Riegler L, Limongelli G, Di
Salvo G, Romano M, Liccardo B, Iengo R, Ascione L, Del Viscovo L, Calabr` P, Calabr` R
