Recent literature is ever more frequently proposing the use of RPEs in adult patients, or using protocols of alternating expansion and contraction, which severely test the mechanical resistance of such devices [16 19].
However, the highly hydrated nature of collagen hydrogels results in their lack of mechanical properties and instability, as well as extensive cell-mediated contraction, which must be overcome to achieve process control.
Airway inflation of the lungs induces mechanical strain and in turn causes either smooth muscle relaxation or contraction, which are mediated for the most part by airway epithelium and mechanosensors, such as slowly and rapidly adapting receptors and C-fiber receptors [ 1, 2].
Our strategy relies on the definition of a model of the electromechanical contraction which is registered on ECG data but also on measured mechanical displacements of the heart tissue typically extracted from medical images.
Speckle tracking echocardiography (STE) has the potential to detect the heterogeneous initiation of active myocardial contraction, which is the primary cause of left ventricular (LV) systolic dysfunction in patients with mechanical dyssynchrony.
These movements unleash a muscle contraction which compresses deep veins.
Scar in the lateral wall Another cause for failure of CRT is the presence of extensive scar in the LV, which causes electrical capture and mechanical contraction.
As previously described [ 11], the onset of mechanical contraction per cardiac region was measured using count-based wall-thickening curves which were derived from alternations in myocardial counts during the cardiac cycle.
Mechanical contraction parameters, cardiac tissue damage and oxidative stress markers were evaluated.
