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1.
Acta Anaesthesiol Scand ; 55(3): 259-66, 2011 Mar.
Article in English | MEDLINE | ID: mdl-21288207

ABSTRACT

There is no consensus on which drugs/techniques/strategies can affect mortality in the perioperative period of cardiac surgery. With the aim of identifying these measures, and suggesting measures for prioritized future investigation we performed the first International Consensus Conference on this topic. The consensus was a continuous international internet-based process with a final meeting on 28 June 2010 in Milan at the Vita-Salute University. Participants included 340 cardiac anesthesiologists, cardiac surgeons, and cardiologists from 65 countries all over the world. A comprehensive literature review was performed to identify topics that subsequently generated position statements for discussion, voting, and ranking. Of the 17 major topics with a documented mortality effect, seven were subsequently excluded after further evaluation due to concerns about clinical applicability and/or study methodology. The following topics are documented as reducing mortality: administration of insulin, levosimendan, volatile anesthetics, statins, chronic ß-blockade, early aspirin therapy, the use of pre-operative intra-aortic balloon counterpulsation, and referral to high-volume centers. The following are documented as increasing mortality: administration of aprotinin and aged red blood cell transfusion. These interventions were classified according to the level of evidence and effect on mortality and a position statement was generated. This International Consensus Conference has identified the non-surgical interventions that merit urgent study to achieve further reductions in mortality after cardiac surgery: insulin, intra-aortic balloon counterpulsation, levosimendan, volatile anesthetics, statins, chronic ß-blockade, early aspirin therapy, and referral to high-volume centers. The use of aprotinin and aged red blood cells may result in increased mortality.


Subject(s)
Cardiac Surgical Procedures/mortality , Critical Care , Anesthesia , Humans
2.
Article in English | MEDLINE | ID: mdl-23439940

ABSTRACT

BACKGROUND: There is no consensus on which drugs/techniques/strategies can affect mortality in the perioperative period of cardiac surgery. With the aim of identifying these measures, and suggesting measures for prioritized future investigation we performed the first international consensus conference on this topic. METHODS: The consensus was a continuous international internet-based process with a final meeting on June 28th 2010 in Milan at the Vita-Salute University. Participants included 340 cardiac anesthesiologists, cardiac surgeons and cardiologists from 65 countries all over the world. A comprehensive literature review was performed to identify topics that subsequently generated position statements for discussion, voting and ranking. RESULTS: Of the 17 major topics with a documented mortality effect, seven were subsequently excluded after further evaluation due to concerns about clinical applicability and/or study methodology. The following topics are documented as reducing mortality: administration of insulin, levosimendan, volatile anesthetics, statins, chronic beta-blockade, early aspirin therapy, the use of preoperative intra-aortic balloon counterpulsation and referral to high-volume centers. The following are documented as increasing mortality: administration of aprotinin and aged red blood cell transfusion. These interventions were classified according to the level of evidence and effect on mortality and a position statement was generated. CONCLUSION: This international consensus conference has identified the non-surgical interventions that merit urgent study to achieve further reductions in mortality after cardiac surgery: insulin, intra-aortic balloon counterpulsation, levosimendan, volatile anesthetics, statins, chronic beta-blockade, early aspirin therapy, and referral to high-volume centers. The use of aprotinin and aged red blood cells may result in increased mortality.

3.
Article in English | MEDLINE | ID: mdl-23440680

ABSTRACT

INTRODUCTION: Acute kidney injury requiring renal replacement therapy is a serious complication following cardiac surgery associated with poor clinical outcomes. Until now no drug showed nephroprotective effects. Fenoldopam is a dopamine-1 receptor agonist which seems to be effective in improving postoperative renal function. The aim of this paper is to describe the design of the FENO-HSR study, planned to assess the effect of a continuous infusion of fenoldopam in reducing the need for renal replacement therapy in patients with acute kidney injury after cardiac surgery. METHODS: We're performing a double blind, placebo-controlled multicentre randomized trial in over 20 Italian hospitals. Patients who develop acute renal failure defined as R of RIFLE score following cardiac surgery are randomized to receive a 96-hours continuous infusion of either fenoldopam (0.025-0.3 µg/kg/min) or placebo. RESULTS: The primary endpoint will be the rate of renal replacement therapy. Secondary endpoints will be: mortality, time on mechanical ventilation, length of intensive care unit and hospital stay, peak serum creatinine and the rate of acute renal failure (following the RIFLE score). CONCLUSIONS: This trial is planned to assess if fenoldopam could improve relevant outcomes in patients undergoing cardiac surgery who develop acute renal dysfunction. Results of this double-blind randomized trial could provide important insights to improve the management strategy of patients at high risk for postoperative acute kidney injury.

5.
Eur J Histochem ; 50(1): 51-60, 2006.
Article in English | MEDLINE | ID: mdl-16584985

ABSTRACT

The diabetes causes alterations in various organ systems, including the male accessory sex glands. The prostate is very important in the reproductive process and it is a frequent target of malignant changes. The aim of this work was to demonstrate the histochemical and ultrastructural alterations in the prostate of diabetic animals. Two groups of animals were utilized: control and non-obese diabetic mice (NOD). Twelve days after the characterization of diabetic status the ventral prostate was collected, fixed in Karnovsky and paraformaldehyde, processed for histochemistry and TEM associated to stereology. The results showed reduction of the epithelial area and increasing of the stromal area with muscular and collagen hypertrophy in the prostatic gland. It was characterized the development of prostatic intraepithelial neoplasia, inflammatory processes and dilation of the organelles involved in the secretory process. It was concluded that diabetes besides damaging the reproductive process, affects the glandular homeostasis favoring the development of prostatic pathologies.


Subject(s)
Diabetes Mellitus, Type 1/pathology , Prostate/pathology , Stromal Cells/pathology , Animals , Cell Communication , Diabetes Mellitus, Type 1/physiopathology , Epithelial Cells/pathology , Epithelial Cells/ultrastructure , Male , Mice , Mice, Inbred BALB C , Mice, Inbred NOD , Microscopy, Electron, Transmission , Organ Size , Prostate/physiopathology , Prostatic Diseases/etiology , Prostatic Diseases/pathology , Prostatic Intraepithelial Neoplasia/etiology , Prostatic Intraepithelial Neoplasia/pathology , Prostatic Neoplasms/etiology , Prostatic Neoplasms/pathology , Stromal Cells/ultrastructure
6.
Rev. ciênc. farm. básica apl ; 27(3): 213-220, 2006. tab
Article in English | LILACS | ID: lil-466203

ABSTRACT

Semiquantitative (Maki) and quantitative (Brun-Buisson) culture techniques were employed in the diagnosis of catheter-related bloodstream infections(CRBSI) in patients who have a short-term central venous catheter (inserted for 30 days). The diagnosis of CRBSI was based on the results of semiquantitative and quantitative culture of material from the removed catheters. Catheter tips (118) from 100 patients were evaluated by both methods. Semiquantitative analysis revealed 34 catheters (28.8%) colonized by greater or equal 15 colonyforming units (cfu), while quantitative cultures (34 catheters, 28.8%) showed the growth of greater or equal 103 cfu/mL. Bacteremia was confirmed in four patients by isolating microorganisms of identical species from both catheters and blood samples. Using the semiquantitative culture technique on short-term central venous catheter tips, we have shown that with a cut-off level of greater or equal 15 cfu, the technique had 100.0% sensitivity, specificity of 68.4%, 25.0% positive predictive value (PPV) and 100.0% negative predictive value (NPV), efficiency of 71.4% and a prevalence of 9.5%. The quantitative method, with a cut-off limit of greater or equal 103 cfu/mL, gave identical values: the sensitivity was 100.0%, specificity 68.4%, positive predictive value (PPV) 25.0%, negative predictive value(NPV) 100.0%, efficiency 71.4% and prevalence 9.5%. We concluded that the semiquantitative and quantitative culture methods, evaluated in parallel, for the first time in Brazil, have similar sensitivity and specificity.


Subject(s)
Bacteremia/complications , Bacteremia/microbiology , Culture Media , Catheters, Indwelling/adverse effects , Catheters, Indwelling/statistics & numerical data , Catheters, Indwelling/microbiology
7.
Braz J Biol ; 64(2): 251-6, 2004 May.
Article in English | MEDLINE | ID: mdl-15462298

ABSTRACT

The insect marking technique of Tadei & Mourão (1976) is until now the only experimental method allowing real-age determination of each individual in a population and, consequently, determination of age structure in a given population. We propose an improvement of this technique, used here to determine the population age structure of the geographical strain SR of the Megaselia scalaris Loew (Diptera; Phoridae), maintained by serial transfer technique at constant temperatures 25 +/- 1.0 degree C and 20 +/- 1.0 degree C. Determining the age structure allowed the calculation of the real longevity of the flies and the identification of the effect of temperature decisive factors in these are the technique of marking insects, because otherwise we would only have an estimate, and depending on mistakes there in, the effect of the determinant factor (temperature) cannot be detected.


Subject(s)
Animal Identification Systems/methods , Diptera , Longevity , Paint , Animals , Female , Male , Models, Biological , Temperature
8.
Braz. j. biol ; 64(2): 251-256, May 2004. ilus, tab
Article in English | LILACS | ID: lil-365639

ABSTRACT

A técnica de marcação de insetos de Tadei & Mourão (1976) é, até o momento, o único método experimental que possibilita determinar a idade real de cada indivíduo na população e, conseqüentemente, determinar a estrutura etária da mesma. Para isto propomos um aprimoramento dessa técnica, utilizada aqui para determinar a estrutura etária de populaçäes da linhagem geográfica SR do díptero forídeo Megaselia scalaris Loew, mantidas pela técnica da transferência seriada em câmaras com temperatura constante de 25 ñ 1,0§C e 20 ñ 1,0§C. O estabelecimento da estrutura etária permitiu calcular a longevidade real das moscas e detectar o efeito ambiental temperatura, sendo fator determinante neste trabalho a marcação dos insetos, pois se não o fosse, teríamos somente estimativas e, dependendo do erro cometido na estimação, o efeito do fator de interesse (temperatura) poderia não ser detectado.


Subject(s)
Animals , Male , Female , Animal Identification Systems , Diptera , Longevity , Pigments, Biological , Temperature
9.
Rev. bras. biol ; 60(3): 415-424, ago. 2000. graf, tab
Article in English | LILACS | ID: lil-280969

ABSTRACT

Based on experimental population profiles of strains of the fly Megaselia scalaris (Phoridae), the minimal number of sample profiles was determined that should be repeated by bootstrap simulation process in order to obtain a confident estimation of the mean population profile and present estimations of the standard error as a precise measure of the simulations made. The original data are from experimental populations founded with SR and R4 strains, with three replicates, which were kept for 33 weeks by serial transfer technique in a constant temperature room (25 ± 1.0°C). The variable used was population size and the model adopted for each profile was a stationary stochastic process. By these simulations, the three experimental population profiles were enlarged so as to determine minimum sample size. After sample size was determined, bootstrap simulations were made in order to calculate confidence intervals and to compare the mean population profiles of these two strains. The results show that with a minimum sample size of 50, stabilization of means begins


Subject(s)
Animals , Male , Female , Diptera , Confidence Intervals , Linear Models , Models, Biological , Population Density
10.
Rev Bras Biol ; 60(3): 415-24, 2000 Aug.
Article in English | MEDLINE | ID: mdl-11188867

ABSTRACT

Based on experimental population profiles of strains of the fly Megaselia scalaris (Phoridae), the minimal number of sample profiles was determined that should be repeated by bootstrap simulation process in order to obtain a confident estimation of the mean population profile and present estimations of the standard error as a precise measure of the simulations made. The original data are from experimental populations founded with SR and R4 strains, with three replicates, which were kept for 33 weeks by serial transfer technique in a constant temperature room (25 +/- 1.0 degrees C). The variable used was population size and the model adopted for each profile was a stationary stochastic process. By these simulations, the three experimental population profiles were enlarged so as to determine minimum sample size. After sample size was determined, bootstrap simulations were made in order to calculate confidence intervals and to compare the mean population profiles of these two strains. The results show that with a minimum sample size of 50, stabilization of means begins.


Subject(s)
Diptera , Animals , Female , Male , Population Density
11.
Panminerva Med ; 42(3): 207-10, 2000 Sep.
Article in English | MEDLINE | ID: mdl-11218627

ABSTRACT

BACKGROUND: The observations here presented come from an action-research project carried out at the Dialysis Centre of Ivrea. The work is focused on the articulation between subjective (the felt experience) and objective variables (the structure and intervention typology) with the aim of understanding patient's needs from an organizational point of view. METHODS: A questionnaire to evaluate the needs of dialytic patients and the burden that these have on the health service and staff, was formulated by the nurses. RESULTS: The results showed how the patient's clinical history indicate, significantly, not only personal and subjective aspects (e.g. interpersonal relationships), but also how they construct their relationships with the hospital and its services (including the hospital staff). CONCLUSIONS: Data open up certain reflections on what role communication and information play within the hospital structure. Efficient communication contributes both to reduce the anxiety level and to improve the organizational climate therefore influencing service quality.


Subject(s)
Peritoneal Dialysis/psychology , Renal Dialysis/psychology , Adult , Aged , Communication , Female , Hemodialysis Units, Hospital/organization & administration , Hemodialysis, Home/nursing , Hemodialysis, Home/psychology , Humans , Italy , Kidney Transplantation/psychology , Male , Peritoneal Dialysis/nursing , Psychology , Renal Dialysis/nursing , Self Care/psychology , Surveys and Questionnaires , Waiting Lists
12.
Cytobios ; 96(382): 81-93, 1998.
Article in English | MEDLINE | ID: mdl-10384710

ABSTRACT

The productivity of Drosophila prosaltans treated with six concentrations of caffeine (from 50 micrograms/ml to 2,500 micrograms/ml of culture medium) during ten generations (approximately 8 months) decreased in a dosage dependent manner in every generation, but at the end of the treatment the flies in all experiments recovered normal productivity, except for those treated with 2,500 micrograms/ml. Longevity in the tenth generation was significantly reduced in males and females only in the 2,500 micrograms/ml dosage, with males being much more affected than females. In a previous study in which the treatment was done in a single generation, productivity exhibited only a partial recovery when the treatment ceased and longevity was significantly reduced in 1,500 micrograms/ml dosages. The hypothesis of selection occurring in ten generations leading to recovery in productivity and to a reduction in the processes which cause a decrease in longevity is being considered.


Subject(s)
Caffeine/pharmacology , Drosophila/growth & development , Longevity/drug effects , Phosphodiesterase Inhibitors/pharmacology , Animals , Dose-Response Relationship, Drug , Drosophila/drug effects , Female , Fertility/drug effects , Male
13.
Minerva Urol Nefrol ; 49(3): 115-9, 1997 Sep.
Article in Italian | MEDLINE | ID: mdl-9432732

ABSTRACT

A questionnaire to evaluate the needs of dialytic patients and the burden that these have on the health service and staff, was formulated by the nurses. The results showed how the patient's case history indicate, significantly, not only personal and subjective aspects (e.g. interpersonal relationships), but also how they construct their relationships with the hospital and its service (including the hospital staff). This opens up certain reflections on what role communication and information play within the hospital structure.


Subject(s)
Kidney Failure, Chronic/psychology , Peritoneal Dialysis/psychology , Renal Dialysis/psychology , Adult , Aged , Female , Humans , Kidney Failure, Chronic/therapy , Kidney Transplantation/psychology , Male , Middle Aged , Patient Care Management , Patients/psychology , Peritoneal Dialysis/nursing , Professional-Patient Relations , Renal Dialysis/nursing , Surveys and Questionnaires
14.
Sangre (Barc) ; 40(2): 97-102, 1995 Apr.
Article in Spanish | MEDLINE | ID: mdl-7784954

ABSTRACT

OBJECTIVES: This paper was meant to analyse distribution of HbS carriers in Brazil, comprising its regional prevalence and the relationship with racial settlement and age groups. MATERIAL AND METHODS: 67,667 blood samples from 48 Brazilian towns were analysed from 1976 to 1988. Such samples were classified as Caucasoid and Negroid. The diagnosis was defined by means of qualitative electrophoresis in alkaline and acid pH, quantification of haemoglobin fractions, cytological studies and some cases were confirmed after examination of the parents. RESULTS: The study of those 67,667 samples allowed us to detect 1,492 HbS carriers (2.2%). That frequency is higher among Negroids (5.16%) than among Caucasoids (1.22%): Z = 22.1397 (Zcritical; 0.05 = 1.9600). Taking the HbS carrier distribution into consideration, we noticed that it is relatively homogeneous among Negroids and higher than 5% in 9 out of the 16 areas involved in the study. By classifying the age group of the areas in the general sample and by comparing the proportions, we found out that there are significant differences (chi 2 = 50.88; chi 2 critical; 0.05; 5 gl = 11.070). CONCLUSIONS: Sickle-cell anaemia diseases play an important role among the pathologies found in several countries, including Brazil. This paper shows that the carriers prevalence varies in the several areas under study and is higher among Negroids in almost all of them. The decreasing frequency occurring from North to South in the general samples and among Caucasoids may be assigned to the contribution of the Negroes in the interracial crossing, particularly in the Northeast.


Subject(s)
Black People , Hemoglobin, Sickle , White People , Age Distribution , Brazil/epidemiology , Humans , Prevalence
15.
Cytobios ; 83(335): 245-8, 1995.
Article in English | MEDLINE | ID: mdl-8689898

ABSTRACT

Parameters of sexual behaviour were studied in Drosophila prosaltans treated with 2,500 micrograms/ml of caffeine per 1 ml of banana culture medium. The mating frequency and copulation duration were greater in control than in treated flies, while the pre-copulation duration was greater in treated flies than in controls. Statistical analysis showed that for the pre-copulation duration the difference was significant.


Subject(s)
Caffeine/pharmacology , Copulation/drug effects , Drosophila/drug effects , Animals , Courtship , Culture Media , Drosophila/physiology , Female , Male , Sexual Behavior, Animal/drug effects , Species Specificity , Time Factors , Wings, Animal/drug effects , Wings, Animal/physiopathology
17.
Mutat Res ; 282(3): 213-7, 1992 Jul.
Article in English | MEDLINE | ID: mdl-1378556

ABSTRACT

In order to investigate the effect of folate depletion, lymphocyte sister-chromatid exchange (SCE) rates were compared among homozygous beta-thalassaemic patients with low folic acid levels, heterozygous beta-thalassaemic patients with normal folate levels and healthy persons with normal haemoglobin, in cultures with both normal and depleted folate conditions. Significantly higher SCE rates were found in homozygous patients in all assays, but the in vitro folate depletion did not induce an increase in SCE frequency in any group.


Subject(s)
Folic Acid Deficiency/metabolism , Thalassemia/genetics , Adolescent , Adult , Analysis of Variance , Cells, Cultured , Child , Child, Preschool , Humans , Infant , Lymphocytes/metabolism , Lymphocytes/ultrastructure , Sister Chromatid Exchange , Thalassemia/metabolism
18.
Int J Cancer ; 50(3): 341-4, 1992 Feb 01.
Article in English | MEDLINE | ID: mdl-1735601

ABSTRACT

Chromosomal aberrations (CA) and sister-chromatid exchanges (SCE) were investigated in peripheral lymphocytes of 15 nurses and nurse's aides handling cytostatic agents in hospital oncology units. Significantly increased frequencies were noted for both CA and SCE rates when the exposed individuals were compared with 15 nurses working in other hospital units and to a control sample matched by sex and age. This points to the need for emphasizing protective measures in the handling of anti-neoplastic agents.


Subject(s)
Antineoplastic Agents/adverse effects , Nurses , Nursing Assistants , Adult , Chromosome Aberrations , Female , Humans , Occupational Exposure , Sister Chromatid Exchange
19.
J Card Surg ; 4(2): 184-5, 1989 Jun.
Article in English | MEDLINE | ID: mdl-2519997

ABSTRACT

A patient with diffuse and severe aortic calcification is described. The patient had a double vessel coronary disease and it was impossible to cannulate the ascending aorta or the femoral arteries for the cardiopulmonary bypass. Arterial cannulation was performed in the innominate artery and both mammary arteries were used during a short period of ventricular fibrillation.


Subject(s)
Aortic Diseases/complications , Brachiocephalic Trunk , Calcinosis/complications , Catheterization, Peripheral , Myocardial Revascularization , Aged , Aorta/pathology , Cardiopulmonary Bypass/methods , Coronary Disease/surgery , Humans , Intraoperative Complications , Male
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