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Search Results: 1 - 10 of 5177 matches for " Maité; Bacallao San Julian "
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Influencia de algunos factores de riesgo cardiovasculares sobre los eventos clínicos adversos más frecuentes, en pacientes revascularizados con circulación extracorpórea
Llanes Echevarría,José Ramón; Pérez López,Horacio; Rodríguez Nande,Lidia; Solís Cordero,Michel; Batista Castellanos,Maité; Bacallao San Julian,Francisco; Céspedes Arias,Gerardo; Mojena Morfa,Guillermo; Ramírez López,Milvio;
Revista Cubana de Cirug?-a , 2011,
Abstract: objective: to determine how different risk factors influence on the more frequent adverse clinical events during the immediate postoperative period of patients operated on myocardial revascularization surgery with extracorporeal circulation. methods: a prospective, longitudinal and observational study was conducted in 60 patients from the institute of cardiology and cardiovascular surgery for 2008-2009. results: there was predominance of dyslipemia patients (90 %) and hypertensive patients (86.7 %). patients with manifestation of adverse clinical events showed a close association with dyslipemia (p< 0.01), a significant decrease of ejection fraction of left ventricle (p< 0.05), a significant increase of extracorporeal circulation times (p < 0.01) and ischemic arrest (p< 0.05). conclusions: the basal dyslipemia, the depressed left ventricle ejection and the length of surgical procedure, were the more significant risk factors for development of adverse clinical events during the immediate postoperative period of revascularization patients.
Informed consent: A bridge towards change in the physician-patient relationship.
Francisco Bacallao San Julian,Irma Matos Santos
Revista Cubana de Cardiología y Cirugía Cardiovascular , 2012,
Abstract: The informed consent is a gradual process that is based on physician-patient relationship where the latter receives sufficient and comprehensibleinformation from the former, in order to take part in decision making with respect to diagnosis, treatment and knowledgeguidedresearch. Patient cooperation must be achieved without coercion and the physician must not abuse his potential, psychologicalinfluence on the patient.The physician-patient relationship is not unique and stagnant. Rather, it is a complex and progressive encounter. This substantialchange in the relationship between the medical professional and the patient, which transforms the traditional authoritative and verticalscheme in another type of democratic and horizontal relationship, is implied when informed consent is practiced as a process. The veryname ‘informed consent’ implies two characteristics: willingness and information. An adequate informed consent process createsgreater acceptance of the proposed measures by the patient.Consent is a fundamental right of the patient and an ethical duty of the physician. Medical organizational structures must adopt theresponsibility of propelling the practice of this ethical setting through information and systematic training of peers, so that necessarychange of outlook and professional and moral culture can be propitiated. The cardiovascular surgery group may need to adapt theinformed consent to new bioethical concepts without creating discrepancies with respect to Cuban sociological characteristics.
Aortic valve surgery morbidity and mortality.
Francisco Bacallao San Julián,Irma Matos Santos,José Ramón Llanes Echeverría,Luis Guevara González
Revista Cubana de Cardiología y Cirugía Cardiovascular , 2012,
Abstract: Introduction Cardiac valve replacement surgery substantially improved outcomes in patients with severe valvulopathies. Epidemiological studiesmake it possible to carry out the situation diagnosis, to identify and to hierarchize problems; as well as to take necessary and rational actionstowards modifying them.Objective The aim of this study is to characterize morbidity and mortality in the postoperative phase of aortic valve surgery at the HermanosAmeijeiras clinical and surgical hospital.Method A descriptive, retrospective and cross-sectional statistical analysis was carried out.Results Aortic stenosis was the disease with the highest number of patients (47). Non-combined aortic valve replacement was carried out on 54patients being 66.7% of the total number of patients. This is followed, in order of frequency, by the combination with mitral valve replacementthat was carried out on 17 patients (21%). 8 patients (9.9%) were revascularized at the same time aortic valve replacementwas carried out. 19mm and 21mm diameter mechanical prosthesis were used. The most frequent postoperative complications were arrhythmias,followed by low cardiac output and respiratory infections. Combined surgical operations had negative influences on morbidityand mortality.
Surgical management of severe tricuspid regurgitation with portal hypertension and hypersplenism. Report of a case.
Irma Matos Santos,Francisco Bacallao San Julián,Luis Miguel Morales Pérez,Roberto Núnez Fernández
Revista Cubana de Cardiología y Cirugía Cardiovascular , 2011,
Abstract: The tricuspid regurgitation is a heart affection that frequently is associated to diseases of theleft side of the heart. It also obeys to different primary causes, among them, the infectiousendocarditis. Generally is well tolerated, the patient can arrive to cardiac surgery in an advancedstage of the illness, with portal vein hypertension, hepatic and splenic cronic congestion. We present the case of a patient —with severe tricuspid regurgitation, post infectious endocarditis,with severe portal vein hypertension and secondary hypersplenism, pancytopeniaand deficit of the clotting factors V and VII—; that was surgically intervened of a tricuspidvalve substitution with extracorporeal circulation without the induction of cardiac arrest.
Metsa katvuse ja liituse hindamine lennukilt laserskanneriga
Mait Lang
Forestry Studies / Metsanduslikud Uurimused , 2010, DOI: 10.2478/v10132-011-0079-5
Abstract: Many of the forest definitions include a criterion based on the share of ground covered by tree crowns. However, the lack of a clear definition for the share and mixing of the terms is common in laws and documentation causing the variables canopy cover (K) and crown cower (L) to be used loosely (Jennings et al., 1999). Different methods exist to estimate K and L (Korhonen et al., 2006). Airborne lidar data are now widely used for estimation of forest inventory variables via regression methods (N sset, 2004; N sset et al., 2004; Suvanto & Maltamo, 2010), leaf area index, LAI (Ria o et al., 2004; Morsdorf et al., 2006) and are an attractive source to estimate canopy cover and crown cover. Tests were carried out in mature Scots pine, Norway spruce and Silver birch stands (Table 1) which are used also for RAMI experiment (RAMI, 2010) in J rvselja, Estonia, to study the options for estimating canopy cover from airborne lidar data. Lidar data were collected with Leica ALS50-II on 30th July 2009 at 500 meter over ground. The scanner beam divergence at 1/e2 energy criterion was 0,22 mrad. Scan angle ranged up to 11 degrees and with two perpendicular flights the final point density on the ground was 20 p m-2 (Kuusk et al., 2009c). Lidar data were processed with FUSION/LDV (McGaughey, 2010) to extract data from sample plot area, create digital terrain model and to calcluate return height statistics. Canopy cover was estimated from lidar data by using all returns (Eq 1), using first returns only (Eq 2) or using single returns (Eq 3). For crown cover estimate the ratio of all returns to first returns D, was calculated (Eq 4). Reference height z was varied in the range 0.2 m ≤ z ≤ 10.0 m. Results were compared to the canopy cover estimates (Kc) calculated from the Cajanus tube (Rautiainen et al., 2005) readings from the ground corresponding to the z = 1.3 m (Table 2). Lidar return distributions by height (Figure 1) were different in studied stands. N sset (2004) recommended to use the height distribution information of return counts in regression models for predicting forest inventory variables. Cover estimates from lidar data depended significantly on the estimator (K1, Kk, Ky) and stand structure (Figure 2). The value of all lidar based estimators decreased with increasing reference height z (Figure 2). Compared to Kc K1(1.3) was positively biased (3-10%) in all stands. However, only in the birch stand the K1(1.3) estimate was outside the confidence intervals of Kc (Table 2, Figure 2). The single return (Ky) and all return (Kk) based canopy cover estimates depended more on the stand structure compared to K1. In the Scots pine stand K1(1.3) gave most similar canopy cover estimate to the ground estimate Kc whereas Ky(1.3) and Kk(1.3) underestimated Kc significantly (>15%). The pine stand structure was rather simple - only one layer of pine trees having minor overlaps between crowns. Therefore the Cajanus tube based estimates of canopy cover Kc, crown cover Lc
“The First Buddhist Priest on the Baltic Coast”: Karlis Tennison and the Introduction of Buddhism in Estonia
Mait Talts
Folklore : Electronic Journal of Folklore , 2008,
Abstract: Karlis Tennison(s) is an essential, although controversial figure inthe history of Buddhism in Estonia and Latvia. He was, without doubt, the first to disseminate Buddhism in the Baltic countries and also one of the earliest disseminators of Buddhism in Eastern Europe. Karl August T nisson, born in 1883 near P ltsamaa, Estonia, later repeatedly changed his biography (for example, transformed from an Estonian to a Latvian and simultaneously became ten years older). The article focuses on the development of his ideas. All his books and other publications, which are modest in volume and usually self-published, were issued between 1909–1916 and 1925–1930. The development of his views can be divided into three main periods: the pre-Buddhist period (before 1911); the ‘theosophical Buddhist’ period (1911–1916) and the period of ego-Buddhism or neopaganism (1925–1930). Around 1910–1911 Tennison ultimately converts to Buddhism. As he did not identify with any particular school, we may call him an ‘abstract’ Buddhist. In 1925 Tennison published a book in Latvian and from 1928 to 1930 three books in Estonian. In the publications of this period, Tennison retreats from the principles of Buddhism and allots more space to the glorification of his own personality and to criticism of Christianity, which was typical of neopaganism popular in Europe at the period. One of the most peculiar ideas in Tennison’s books is that of the Pan-Baltonian Empire. In that period Tennison also began to disseminate his view that Estonians’, Latvians’ and Lithuanians’ pre-Christian beliefs were somewhat similar to the religious and philosophical systems of India in the Vedic period, which, in the present-day world, are represented in their purest form in Buddhism.In 1930, Tennison, accompanied by Friedrich V. Lustig, left the Baltics and a year later also Europe, settling for the period 1932–1949 in the Kingdom of Siam. After leaving the Baltics, Tennison did not publish his texts as separate books, although during the last period of his life, in the 1950s and early 1960s while living in Burma, he is known to have been writing his so-called Buddhist Catechism, which remained unfinished.
Spin Foam Models for Quantum Gravity and semi-classical limit
Maité Dupuis
Physics , 2011,
Abstract: The spinfoam framework is a proposal for a regularized path integral for quantum gravity. Spinfoams define quantum space-time structures describing the evolution in time of the spin network states for quantum geometry derived from Loop Quantum Gravity (LQG). The construction of this covariant approach is based on the formulation of General Relativity as a topological theory plus the so-called simplicity constraints which introduce local degrees of freedom. The simplicity constraints are essential in turning the non-physical topological theory into 4d gravity. In this PhD manuscript, an original way to impose the simplicity constraints in 4d Euclidean gravity using harmonic oscillators is proposed and new coherent states, solutions of the constraints, are given. Moreover, a consistent spinfoam model for quantum gravity has to be connected to LQG and must have the right semi-classical limit. An explicit map between the spin network states of LQG and the boundary states of spinfoam models is given connecting the canonical and the covariant approaches. Finally, new techniques to compute semiclassical asymptotic expressions for the transition amplitudes of 3d quantum gravity and to extract semi-classical information from a spinfoam model are introduced. Explicit computations based on approximation methods and on the use of recurrence relations on spinfoam amplitudes have been performed. The results are relevant to derive quantum corrections to the dynamics of the gravitational field.
IMPUTACIóN MúLTIPLE EN VARIABLES CATEGóRICAS USANDO DATA AUGMENTATION Y áRBOLES DE CLASIFICACIóN
Jorge Bacallao Guerra* y Jorge Bacallao Gallestey**
Revista Investigación Operacional , 2010,
Abstract: It is a modication of common multiple imputation algorithms which combines classification trees (CT) and data augmentation for categorical data. We describe the rationale of the method and compare it, on theoretical and practical grounds, with two of the most frequently used methods. We use a fictitious base and an “ad hoc" R-based software.
混凝土控制强度的快速确定
san
武汉理工大学学报 , 1982,
Abstract: ?施工现场需要在早于28天、甚至早于7天前对混凝土的质量是否合格作出判断。如果不能较早地查出低强度的混凝土,而要纠正这种失误则往往花费很大,同时也很困难。一种较早的确定混凝土强度潜力的方法,是提高混凝土强度试件的早期温度。本文讨论了几种这类加速养护的方法。在美国一些标准化的方法中,沸水法(boilngwatermethod)显得最可靠。此法提供了在24~25小时龄期时的加速强度。最简单的方法是自然养护法(autogenouscuringmethod),此法在48小时龄期可得到强度。虽然利用加速养护1天或2天的强度不完全象28天的强度那样容易得到,但是工程师还是依靠这样一些试验,以迅速防止由于28天的强度不合标准而产生的复杂后果。
Las curvas ROC y las medidas de detectabilidad para la validación de predictores del rendimiento docente
Bacallao Gallestey,Jorge;
Educaci?3n M??dica Superior , 1996,
Abstract: the well-know roc curves (relative operating characteristic) and their associated detectability measures, are introdced for the validation of several predictors of the academic achievement. emphasis is made on the advantages of this instrument over other know classic measures, as sensitivity and specificity, to compare the effectiveness of several variables with prognostic purposes. several results related with the foundation, interpretation and expressions for calculating the different detectability measures, are exposed, and the application of these measures is illustrated, to show the advantages of the academic index over the orthography tests in the prognostic of the educational achievement in the superior medical education.
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