16 research outputs found
Carotid artery plaque composition : Relationship to clinical presentation and ultrasound B-mode imaging
Objective: To correlate B-mode ultrasound findings to carotid plaque histology.
Design: European multicentre study (nine centres).
Material and Methods: Clinical presentation and risk factors were recorded and preoperative ultrasound Duplex scanning with special emphasis on B-mode imaging studies was performed in 270 patients undergoing carotid endarterectomy. Perioperatively macroscopic plaque features were evaluated and the removed specimens were analysed histologically for fibrous tissue, calcification and 'soft tissue' (primarily haemorrhage and lipid).
Results: Males had more soft tissue than females (p = 0.0006), hypertensive patients less soft tissue than normotensive (p = 0.01) and patients with recent symptoms more soft tissue than patients with earlier symptoms (p = 0.004). There was no correlation between surface description on ultrasound images compared to the surface judged intraoperatively by the surgeon. Echogenicity on B-mode images was inversely related to soft tissue (p=0.005) and calcification ions directly related to echogenicity (p < 0.0001). Heterogeneous plaques contained more calcification than homogeneous (p = 0.003), however there was no difference in content of soft tissue.
Conclusion: Ultrasound B-mode characteristics are related to the histological composition of carotid artery plaques and to patient's history. These results may imply that patients with distant symptoms may be regarded and treated as asymptomatic patients whereas asymptomatic patients with echolucent plaques should be considered for carotid endarterectomy
Determination of the execution points of mutations in the nuclear replication cycle of Aspergillus nidulans
CONCEPTUALIZING THE GOAL AND SYSTEM MODELS OF ORGANIZATIONAL EFFECTIVENESS ?IMPLICATIONS FOR COMPARATIVE EVALUATION RESEARCH
Initial characterization of Aspergillus nidulans mutants blocked in the nuclear replication cycle
Reprinted Article "carotid artery plaque composition - Relationship to clinical presentation and ultrasound b-mode imaging"
Objective: To correlate B-mode ultrasound findings to carotid plaque histology. Design: European multicentre study (nine centres). Material and Methods: Clinical presentation and risk factors were recorded and preoperative ultrasound Duplex scanning with special emphasis on B-mode imaging studies was performed in 270 patients undergoing carotid endarterectomy. Perioperatively, macroscopic plaque features were evaluated and the removed specimens were analysed histologically for fibrous tissue, calcification and 'soft tissue' (primarily haemorrhage and lipid). Results: Males had more soft tissue than females (p = 0.0006), hypertensive patients less soft tissue than normotensive (p = 0.01) and patients with recent symptoms more soft tissue than patients with earlier symptoms (p = 0.004). There was no correlation between surface description on ultrasound images compared to the surface judged intraoperatively by the surgeon. Echogenicity on B-mode images was inversely related to soft tissue (p = 0.005) and calcification was directly related to echogenicity (p < 0.0001). Heterogeneous plaques contained more calcification than homogeneous (p = 0.003), however, there was no difference in content of soft tissue. Conclusion: Ultrasound B-mode characteristics are related to the histological composition of carotid artery plaques and to patient's history. These results may imply that patients with distant symptoms may be regarded and treated as asymptomatic patients whereas asymptomatic patients with echolucent plaques should be considered for carotid endarterectomy
Analysis of Bacteriophage φ29 Gene Function: Protein Synthesis in Suppressor-Sensitive Mutant Infection of Bacillus subtilis
Carotid Artery Plaque Composition Relationship to Clinical Presentation and Ultrasound B-mode Imaging (Reprinted from Eur J Vasc Endovasc Surg, vol 10, pg 23-30, 1995)
Objective: To correlate B-mode ultrasound findings to carotid plaque
histology.
Design: European multicentre study (nine centres).
Material and Methods: Clinical presentation and risk factors were
recorded and preoperative ultrasound Duplex scanning with special
emphasis on B-mode imaging studies was performed in 270 patients
undergoing carotid endarterectomy. Perioperatively, macroscopic plaque
features were evaluated and the removed specimens were analysed
histologically for fibrous tissue, calcification and ‘soft tissue’
(primarily haemorrhage and lipid).
Results: Males had more soft tissue than females (p = 0.0006),
hypertensive patients less soft tissue than normotensive (p = 0.01) and
patients with recent symptoms more soft tissue than patients with
earlier symptoms (p = 0.004). There was no correlation between surface
description on ultrasound images compared to the surface judged
intraoperatively by the surgeon. Echogenicity on B-mode images was
inversely related to soft tissue (p = 0.005) and calcification was
directly related to echogenicity (p < 0.0001). Heterogeneous plaques
contained more calcification than homogeneous (p = 0.003), however,
there was no difference in content of soft tissue.
Conclusion: Ultrasound B-mode characteristics are related to the
histological composition of carotid artery plaques and to patient’s
history. These results may imply that patients with distant symptoms may
be regarded and treated as asymptomatic patients whereas asymptomatic
patients with echoluceht plaques should be considered for carotid
endarterectomy. (C) 2011 Published by Elsevier Ltd on behalf of European
Society for Vascular Surgery
Using consensus as a criterion for groupness: implications for the cohesion-group success relationship
The purpose of the study was to examine how the exclusion of teams failing to meet varying statistical criteria for consensus on cohesiveness influences the magnitude of the cohesion-team success relationship. The index of agreement was calculated for 78 teams (n = 1000 athletes) that had completed the Group Environment Questionnaire. Results showed that excluding teams because they fail to satisfy various criteria for consensus leads to changes in the magnitude of the cohesion-team success relationship. The magnitude of the relationship between team success and the Individual attractions to group-task manifestation of cohesion showed progressive decreases as criteria required to demonstrate consensus became more stringent. Conversely, the magnitude of the relationship between team success and the Group integration-task and Group integration-social manifestations of cohesion showed progressive increases as criteria required to demonstrate consensus became more stringent. The results are discussed in terms of their relationship to group dynamics theory and practice