This latter derives SV from pulse contour analysis of arterial femoral pressure, a derivation which could be biased in case of IAH and vascular constraint [ 12].
"We do teach a vascular neck restraint," Fernandez told me.
In recent years, provocative proposals about the limits to tree height and size growth have sparked debate about the hydraulic and physiological constraints underlying vascular system design and function.
The heterogeneity of JA accumulation within elicited leaves that we report here is an example of an "unpredictable" plant defense response to herbivory; each elicited leaf has a different patchwork pattern of JA accumulation based on certain constraints (such as vascular connectivity and conjugation efficiency).
Moreover, given that intracranial contents within the rigid skull (blood, brain tissue, and cerebral spinal fluid) are nearly incompressible, constraints on cerebral vascular compliance by the global intracranial compartment compliance are to be expected (Hu et al. 2006).
Kidney transplantation exclusion was related to family refusal (n = 15), past medical history, time constraints, viral serology, high vascular ex vivo resistance of the graft and macroscopic abnormalities.
The hypothesis posits that a number of innovations to the vascular system provided the release from constraints which allowed the implementation of an AIS.
Also, since it is argued that the closed vascular system provided the release from constraint, a number of vascular innovations must have preceded the advent of an AIS.
These local constraints, the low sensitivity of calf US vascular imaging [31] and the unknown significance of calf DVT explain why we intentionally focused our investigations on femoral and popliteal veins for the lower limb.
Beyond possible mechanical constraints, molecular genetic patterning is clearly pivotal in vascular morphodynamics.
