.
https://www.sciencedirect.com/science/article/pii/S0735109717379391?via%3Dihub
.
Voltamos a este artigo intrigante.
.
The model showed that GCS contributes more than twice as much to EF than GLS. A significant reduction of GLS could be compensated by a small increase of GCS or wall thickness or reduced diameter. The model further demonstrated how EF can be maintained in ventricles with increased wall thickness or reduced diameter, despite reductions in both longitudinal and circumferential shortening.
.
Incrível como alterações do Strain podem ser compensadas por alterações discretas da geometria e levar a fração de ejeção por Simpson normal em pacientes com alterações de encurtamento.
.
Two specific objectives of this study were to investigate if:
- 1.
-
The contribution of longitudinal shortening to EF is so small that reduced longitudinal shortening can be compensated by small changes in other factors to preserve EF; and
- 2.
-
EF can be preserved, despite reductions in both longitudinal and circumferential shortening in LVs with increased wall thickness and/or reduced end-diastolic volume(EDV).
.
.
Aceitamos o Strain longitudinal como ligado ao subendocárdio e o Strain circunferencial mais transmural.
.
Perspectives
In ventricles with increased wall thickness and/or reduced EDV, EF is higher for the same degree of global myocardial shortening. Despite reductions of both longitudinal and circumferential shortening, the EF can be preserved in ventricles with thick walls and/or reduced EDV. Since alterations in LV geometry may compensate for reduced shortening, measurement of EF may not accurately reflect overall ventricular systolic function. Reduced longitudinal shortening is more easily compensated as it contributes less to EF than circumferential shortening.
.
Sinal de alerta para o uso do Simpson na HVE.
.
Strain em aplicação clínica na ROTINA!
.