In addition to the number of diseased vessels involved, proximal arterial segment and coronary artery jeopardy scores were calculated to evaluate the extent of disease and amount of myocardium at risk.
The final measurements included pressure values throughout three cardiac cycles at the proximal (guiding catheter at the ostium of the artery) and distal locations of each arterial segment, combined with flow velocity values at the distal location both at baseline and during maximal hyperemia.
In addition, the need for a large arterial segment (2 to 3 cm) due to the segmental nature of the vascular inflammation [ 22- 25] and the practical difficulties in repeating it, make temporal artery biopsy not a simple procedure [ 26].
Williams and Stewart [ 96] have suggested that, in most patients, coronary ectasia is a diffuse disease of the coronary arteries rather than a localized abnormality of a single arterial segment.
Therefore, in all children with arterial occlusion at the time of diagnosis who were included in this study, vascular imaging revealed additional arterial wall abnormalities, consisting of one or more areas of stenosis proximal to but in the same arterial segment as the occlusion, or involvement of stenosed arteries other than the occluded one.
Chronic hindlimb ischemia was induced by unilateral excision of an arterial segment extending from the external iliac to the femoral vessels (artery and vein) in male athymic nude rats (NIH-Foxn1rnu, Charles River Laboratory Inc, Sulzfeld, Germany) during 0.2% isoflurane anesthesia.
Two animals died from intraoperative refractory ventricular fibrillation during coil deployment in the circumflex and right coronary arteries, possibly due to the unwanted occlusion of the more proximal arterial segment due to excessively long coils.
Histology results were obtained in all 22 GCA patients and in 27 of 33 non-GCA patients, but because all 18 positive biopsies in GCA patients were directed to a particular arterial segment after obtaining the CDS results, the true value of the temporal artery biopsy alone for the diagnosis of GCA could not be estimated in our patients.
In many cases, pedestrian crossing demands are distributed discretely along an arterial segment.
Direct luminal neovascular sprouting was evident between day 10 and day 14 from the vein and the IVG but not from the arterial segment.
To achieve the most secure shear stress value, the optimum stent geometry can be obtained with respect to the mentioned parameters for a specific arterial segment.
