13 research outputs found
World Report on Women’s Health 2006
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135254/1/ijgo80.pd
Relation between ST segment elevation during dobutamine stress test and myocardial viability after a recent m
OBJECTIVE: To assess the relation between ST segment elevation during the
dobutamine stress test and late improvement of function after acute Q wave
myocardial infarction. PATIENTS AND DESIGN: 70 patients were studied a
mean (SD) 8 (3) days after acute myocardial infarction with high dose
dobutamine-atropine stress echocardiography and a follow up echocardiogram
at 85 (10) days. A score model based on 16 segments and four grades was
used to assess left ventricular function. Functional improvement was
defined as a reduction of wall motion score > or = 1 in > or = 1 segments
at follow up. INTERVENTION: Myocardial revascularisation was performed in
23 patients (33%) before follow up studies. RESULTS: ST segment elevation
occurred in 40 patients (57%). Late functional improvement occurred in 35
patients (50%). Functional improvement was more common in patients with ST
segment elevation (68% v 30%, P < 0.005) and they had a higher mean (SD)
number of improved segments at follow up (1.9 (2.2) v 0.5 (1.1), P <
0.005). The wall motion score index decreased between baseline and follow
up in patients with ST segment elevation (1.54 (0.50) v 1.48 (0.43), P <
0.05) but not in patients without ST segment elevation (1.39 (0.60) v 1.45
(0.47)). The accuracy of ST segment elevation for the prediction of
functional improvement was similar to that of low dose dobutamine
echocardiography in patients with anterior infarction (80% v 83%) and in
patients who underwent revascularisation (78% v 83% respectively).
CONCLUSION: In patients with a recent Q wave myocardial infarction,
dobutamine-induced ST segment elevation is a valuable marker of myocardial
viability particularly when the test is performed without or with
suboptimal echocardiographic imaging
Second-gradient continua as homogenized limit of pantographic microstructured plates: a rigorous proof
International audienceSince the works by Gabrio Piola, it has been debated the relevance of higher-gradient continuum models in mechanics. Some authors even questioned the logical consistency of higher-gradient theories, and the applicability of generalized continuum theories seems still open. The present paper considers a pantographic plate constituted by Euler beams suitably interconnected and proves that Piola’s heuristic homogenization method does produce an approximating continuum in which deformation energy depends only on second gradients of displacements. The Gamma-convergence argument presented herein shows indeed that Piola’s conjecture can be rigorously proven in a Banach space whose norm is physically dictated by energetic considerations
Brachytherapy in men with prostate cancer: update on indications and outcomes
Brachytherapy (BT), using either a low-dose-rate (LDR) or mostly high-dose-rate (HDR) technique, is the device able to deliver the highest dose-rate in the most conformal way. It is used as monotherapy or in combination with external beam radiotherapy (EBRT). LDR-BT is mostly used as monotherapy; HDR-BT is combined with EBRT \ub1 adjuvant hormone therapy. In patients with low-risk disease and in selected intermediate-risk patients, LDR-BT ensures long-term good disease control rates and HDR-BT can show similar results, even if with shorter follow-up. In patients with intermediate/high risk disease the combination therapy (EBRT + HDR-BT) shows better oncological outcomes compared to EBRT monotherapy, even if the role of adjuvant hormone therapy is still unclear. Literature shows variable efficacy of BT in case of local recurrence after EBRT and radical prostatectomy even if few cases have been reported with short follow-up. Side effects are acceptable (urogenital toxicity, urinary incontinence, sexual function) and comparable with the other treatment modalities. So far, randomized controlled trials comparing the different treatment modalities are necessary to clarify indications and real efficacy