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Stress Echocardiography and myocardial Contrast Echocardiography in Viability Assessment
No full textX-ray magnetic circular dichroism investigation of the superparamagnetic transition-metal ion-cluster r-Mn12Bz
No full textDiagnosis of transient acute myocardial ischemia in man by M-mode echocardiography
No full textUnder basal conditions the echocardiographic findings in anginal patients (pts.) without previous myocardial infarction appears usually normal. Consequently, the usefulness of the ultrasounds evaluation in angina pectoris has been commonly considered poor and the utilization of this technique in coronary artery disease has been restricted to the detection of myocardial infarction in its acute phase or to its chronic mechanical alterations. The purpose of this study was to assess the possibility offered by M-mode echocardiography to detect changes caused by transient myocardial ischemia at rest in man, in view of the possible diagnostic application of this technique. The reported results were obtained from 25 ischemic attacks (13 spontaneous and 12 ergonovine induced) with ST segment elevation or pseudonormalization of a basally negative T wave at rest. The semiautomatic computerized analysis of echocardiograms continuously recorded during these attacks showed a reduction of motion and of systolic thickening, accompanied by a diastolic thinning of the wall involved by the ischemia. These changes occur very early: they appear few seconds before ECG changes and are accompanied by a reduction of contraction and relaxation dP/dt and precede the onset of chest pain; moreover, they are followed by an increase in left ventricular internal diameters. In conclusion M-mode echocardiography is a sensitive technique capable to detect transient myocardial ischemia in the course of spontaneous or induced angina with ST segment elevation or positivity of negative T wave. This approach could be helpful in the diagnostic evaluation of patients with atypical chest pain and/or aspecific ECG changes and it can be complementary to other non invasive techniques such dynamic ECG and nuclear cardiology techniques
Serial changes in cardiac output monitored by transcutaneus aortovelography: good correlation with thermodiluition
No full textReligiosity associated with prolonged survival in liver transplant recipients
No full textWe tested the hypothesis that religiosity (ie, seeking God's help, having faith
in God, trusting in God, and trying to perceive God's will in the disease) is
associated with improved survival in patients with end-stage liver disease who
have undergone orthotopic liver transplantation. We studied a group of 179
candidates for liver transplantation who responded to a questionnaire on
religiosity during the pretransplant psychological evaluation and underwent
transplantation between 2004 and 2007. The demographic data, educational level,
employment status, clinical data, and results of the questionnaire were compared
with the survival of patients during follow-up, regardless of the cause of any
deaths. Factorial analysis of responses to the questionnaire revealed 3 main
factors: searching for God (active), waiting for God (passive), and fatalism. The
consistency of the matrix was very high (consistency index = 0.92). Eighteen
patients died during follow-up (median time = 21 months). In multivariate
analysis, only the searching for God factor [hazard ratio (HR) = 2.95, 95%
confidence interval (CI) = 1.05-8.32, χ(2) = 4.205, P = 0.040] and the
posttransplant length of stay in the intensive care unit (HR = 1.05, 95% CI =
1.01-1.08, χ(2) = 8.506, P = 0.035) were independently associated with survival,
even after adjustments for the waiting for God factor, fatalism, age, sex,
marital status, employment, educational level, viral etiology, Child-Pugh score,
serum creatinine level, time from the questionnaire to transplantation, donor
age, and intraoperative bleeding. Patients who did not present the searching for
God factor were younger than those who did, but they had shorter survival times
(P = 0.037) and a 3-fold increased relative risk of dying (HR = 3.01, 95% CI =
1.07-8.45). In conclusion, religiosity is associated with prolonged survival in
patients undergoing liver transplantation
Infezione da BHV-1 nella capra. Isolamento ed identificazione del virus, riattivazione dell'infezione latente
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Serial changes in cardiac output monitored by transcutaneous aortovelography: good correlation with thermodilution
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