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2.
Eur Heart J ; 20(17): 1276-84, 1999 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-10454979

RESUMEN

AIMS: The aim of this study was to analyse the processes through which job, career and research-related choices are determined in Italian cardiology, focusing on characteristics such as productivity, gender and family. METHODS AND RESULTS: In June 1996, a questionnaire surveying individual and career-related data was mailed to all members (8000) of the Italian societies of cardiology. Returned questionnaires numbered 1715 (21.4% of the total mailed), 83% were completed by men and 17% by women. For both hospital and academic careers, advancement in rank was influenced by variables denoting productivity, family and individual characteristics. However, men and women showed slightly different patterns. CONCLUSIONS: Promotion to the upper ranks of the hierarchy was highly dependent upon time (once the effects of the covariates were eliminated). This situation is typical of the internal labour market, that is, in institutions in which staff members are ranked on a hierarchical scale according to formal criteria that are 'rigid' and institutionalized, partially sheltered from competition. Therefore, once a member has gained access to the bottom of the hierarchy, the professional career is 'pre-determined' and seniority has an appreciable influence on promotion decisions; in this context, women appear to be at a disadvantage.


Asunto(s)
Movilidad Laboral , Médicos Mujeres , Prejuicio , Centros Médicos Académicos/organización & administración , Adulto , Selección de Profesión , Femenino , Humanos , Italia , Masculino
3.
Cardiologia ; 44(3): 269-80, 1999 Mar.
Artículo en Italiano | MEDLINE | ID: mdl-10327729

RESUMEN

Women are less present on the labor market and many studies have demonstrated the existence of gender differences regarding participation rate and career advancement of women. The process through which job-, career- and research-related choices are structured within the realm of Italian cardiology, is described in this study emphasizing the effects of productivity, gender and family commitments. In June 1996, a questionnaire was mailed to all members of the Italian societies of cardiology. It included mainly (pre-coded) set-choice questions concerning individual characteristics, career-related data, and information pertaining to teaching, scientific and research activity. Returned questionnaires numbered 1715 (21.4% of the total mailed), 83% were completed by males and 17% by females. For both hospital and academic careers, advancement in rank was influenced by variables denoting productivity, family and individual characteristics. Promotion to the upper ranks of the hierarchy was highly dependent upon time (once the effects of the covariates were eliminated). This is a situation that is typical of the internal labor market, that is, of an institution in which staff members are ranked on a hierarchical scale according to formal criteria that are "rigid" and institutionalized, partially and totally sheltered from competition. Therefore, once a member has gained access to the first level of the hierarchy, his/her professional career is to a certain extent pre-determined and the seniority ends up taking on importance in promotion decisions to an appreciable extent; in this field, the weight of seniority on promotion ranges between 30 and 50%.


Asunto(s)
Cardiología/tendencias , Movilidad Laboral , Médicos Mujeres , Prejuicio , Adulto , Anciano , Anciano de 80 o más Años , Interpretación Estadística de Datos , Femenino , Humanos , Italia , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios , Recursos Humanos
4.
G Ital Cardiol ; 29(3): 291-303, 1999 Mar.
Artículo en Italiano | MEDLINE | ID: mdl-10231675

RESUMEN

Women are less present on the labor market and many studies have demonstrated the existence of gender differences regarding the participation rate and career advancement of women. The processes through which job-, career- and research-related choices are structured within the realm of Italian cardiology is described in this study, emphasizing the effects of productivity, gender and family commitments. In June of 1996, a questionnaire was mailed to all members of the Italian societies of cardiology. It included mainly (pre-coded) set-choice questions concerning individual characteristics, career-related data and information pertaining to teaching, scientific and research activity. Returned questionnaires numbered 1715 (21.4% of the total mailed), with 83% completed by males and 17% by females. For both hospital and academic careers, advancement in rank was influenced by variables denoting productivity, family and individual characteristics. Promotion to the upper ranks of the hierarchy was highly dependent upon time (once the effects of the covariates were eliminated). This is a situation that is typical of the internal labor market or in other words, of an institution in which staff members are ranked on a hierarchical scale according to formal criteria that are "rigid" and institutionalized, partially or totally sheltered from competition. Therefore, once a member has gained access to the first level of the hierarchy, his/her professional career is pre-determined to a certain extent and seniority ends up taking on importance in promotion decisions to an appreciable extent; in this field, the weight of seniority on promotion ranges between 30 and 50%.


Asunto(s)
Cardiología , Selección de Profesión , Adulto , Cardiología/estadística & datos numéricos , Movilidad Laboral , Femenino , Humanos , Italia , Masculino , Persona de Mediana Edad , Médicos/estadística & datos numéricos , Médicos Mujeres/estadística & datos numéricos , Investigadores/estadística & datos numéricos , Sociedades Médicas , Encuestas y Cuestionarios , Recursos Humanos
5.
Neurology ; 51(6): 1703-8, 1998 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-9855526

RESUMEN

OBJECTIVE: To analyze the expression of adhesion molecules on mononuclear cells from blood and CSF of patients with exacerbations of MS before and after megadose IV methylprednisolone (MP). BACKGROUND: Adhesion molecules regulate transmigration of lymphocytes and monocytes/macrophages to the CNS and have an important role in the pathogenesis of MS. METHODS: The expression of very late activation antigen 4 (VLA-4) and vascular cell adhesion molecule 1, lymphocyte function-associated antigen 1 (LFA-1), and intercellular adhesion molecule 1 (ICAM-1) was analyzed immunocytologically on lymphocytes and monocytes from blood and CSF of 23 patients and 11 healthy control subjects. The results were correlated with the Expanded Disability Status Scale and in half of the patients with the number of T2-weighted MS plaques and brain atrophy analyzed by MRI. RESULTS: After treatment, the mean proportions of VLA-4, LFA-1, and ICAM-1 on blood lymphocytes (p < 0.0003, p < 0.00001, p < 0.01) and monocytes (p < 0.0001, p < 0.0002, p < 0.007) of 23 patients decreased. The expression of these adhesion proteins was also diminished on CSF leukocytes. However, even after treatment, the levels of VLA-4 and LFA-1 on lymphocytes from blood of MS patients remained higher than in the control subjects. The level of VLA-4 and LFA-1 on blood lymphocytes (r=0.67, p=0.023) and VLA-4 on monocytes (r=0.61, p=0.047) correlated with the number of T2-weighted lesions. CONCLUSIONS: Megadose MP may suppress brain inflammation by reducing the expression of adhesion molecules on mononuclear cells from blood and CSF of MS patients. The inhibition of cellular trafficking in MS by MP offers an important means of altering the autoimmune response in MS.


Asunto(s)
Antiinflamatorios/administración & dosificación , Moléculas de Adhesión Celular/análisis , Metilprednisolona/administración & dosificación , Esclerosis Múltiple/tratamiento farmacológico , Adulto , Antialérgicos/análisis , Femenino , Humanos , Integrina alfa4beta1 , Integrinas/análisis , Molécula 1 de Adhesión Intercelular/análisis , Antígeno-1 Asociado a Función de Linfocito/análisis , Linfocitos/química , Linfocitos/metabolismo , Masculino , Persona de Mediana Edad , Monocitos/química , Monocitos/metabolismo , Esclerosis Múltiple/sangre , Esclerosis Múltiple/líquido cefalorraquídeo , Receptores Mensajeros de Linfocitos/análisis
6.
Arch Gerontol Geriatr ; 23(2): 111-27, 1996.
Artículo en Inglés | MEDLINE | ID: mdl-15374156

RESUMEN

This study aimed to assess the relationships among depression level, memory and metamemory scores on a large sample of elderly subjects (139 men and 147 women). Preliminary examination showed that none of the sampled subjects had intellectual impairment (as assessed by means of the Mini-Mental State Examination) or neuropsychiatric symptoms. Each subject was administered the Randt Memory Test (RMT), the Sehulster Memory Scale (SMS) and the Geriatric Depression Scale (GDS). A Multivariate Analysis of Covariance revealed a negative influence of depression on the two RMT measures (Acquisition-Recall: AR; Delayed Memory: DM) and on the three SMS measures (Set1: self-comparison; Set2: memory complaints; Set3: peer comparison), and of age on AR and DM, and Set1 and Set2. A Multivariate Regression Analysis showed that DM scores were positively correlated with Set2 in men and women, and with Set1 in women and Set3 in men, whereas AR scores related to Set2 and Set3 in men and Set1 in women. In addition, depression influenced negatively Set1, Set2 and AR scores in both men and women and DM scores only in men. On the whole, the results suggest that depression, memory and metamemory are rather closely related in non-severely depressed older individuals, albeit with slightly different patterns in men and women, and that some areas of metamemory are congruent with objective functioning regardless of the level of depressive symptoms.

7.
Ann Chir Gynaecol ; 85(1): 17-21, 1996.
Artículo en Inglés | MEDLINE | ID: mdl-8739928

RESUMEN

The effects of dextran on the antithrombin (AT) III activity and blood coagulation, evaluated with thromboelastography, were investigated in 26 patients (anaesthesia risk class I or II) scheduled for minor surgery under general anaesthesia. In the Dextran group the patients were infused first with dextran 7 ml/kg, then with Ringer's acetate. In the Ringer group, the patients received only Ringer's acetate. In the recovery room fluid therapy was continued with 5% dextrose in water until the first postoperative day. Blood loss and fluid replacement were comparable in the groups. Haematocrit (Hcr) decreased significantly in the Dextran group, and the platelet count decreased in both groups during surgery. The median baseline AT III values were similar in the study groups. In the recovery room, the median AT III value was lower in the Dextran than in the Ringer group, 78% and 92%, respectively (P < 0.05). By the following day, the AT III values had returned near the initial level. After surgery, the maximal amplitude of thromboelastogram was 48 mm in the Dextran group, and 58 mm in the Ringer group (P < 0.05). In conclusion, fluid replacement with dextran resulted in modest and short-lived alterations in blood coagulation.


Asunto(s)
Antitrombina III/análisis , Pérdida de Sangre Quirúrgica/fisiopatología , Dextranos/administración & dosificación , Fluidoterapia , Hemodilución , Agregación Plaquetaria/efectos de los fármacos , Tromboelastografía , Adulto , Anestesia General , Femenino , Hematócrito , Hemoglobinometría , Humanos , Soluciones Isotónicas/administración & dosificación , Masculino , Persona de Mediana Edad , Recuento de Plaquetas/efectos de los fármacos , Valores de Referencia
8.
Acta Anaesthesiol Scand ; 39(2): 228-35, 1995 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-7540789

RESUMEN

The purpose of the study was to examine the effects of hypooncotic 4% hydroxyethyl starch 120/0.7, 3% dextran 70, 5% albumin and hyperoncotic 6% hydroxyethyl starch 120/0.7 on the perioperative colloid osmotic pressure (COP), albumin and protein concentrations and fluid balance. The plasma substitutes were used with red cell concentrates to replace blood loss with equal volume in sixty major abdominal or urological surgeries. A special effort was made to keep replacements and losses at even volumes constantly and to avoid fluctuation of blood volume. The blood specimen were obtained before induction, after each 20% blood loss, at the end of the recovery room phase and on the three following postoperative mornings. There were significant differences in the peroperative and immediate postoperative COPs. However, these differences had vanished by the first postoperative morning. COP was preserved above 16 mmHg in all groups throughout the study. The identical peroperative albumin and protein concentrations of the synthetic colloid groups suggests that their volume effect was the same, regardless of the varying COP. During the observation period there were no significant differences among the groups concerning the diuresis and the fluid balances. We conclude, that the hypooncotic 4% HES 120 and 3% dextran 70 solutions provide the same clinical effect as 6% HES 120 solution. Consequently less colloid is needed, which allows the use of greater volumes of the dilute colloid solutions in replacement therapy.


Asunto(s)
Pérdida de Sangre Quirúrgica/prevención & control , Sustitutos del Plasma/uso terapéutico , Abdomen/cirugía , Albúminas/administración & dosificación , Albúminas/uso terapéutico , Proteínas Sanguíneas/análisis , Volumen Sanguíneo , Coloides , Dextranos/administración & dosificación , Dextranos/uso terapéutico , Transfusión de Eritrocitos , Femenino , Hematócrito , Humanos , Derivados de Hidroxietil Almidón/administración & dosificación , Derivados de Hidroxietil Almidón/uso terapéutico , Masculino , Persona de Mediana Edad , Presión Osmótica , Sustitutos del Plasma/administración & dosificación , Sustitutos del Plasma/química , Albúmina Sérica/análisis , Sistema Urinario/cirugía , Equilibrio Hidroelectrolítico
9.
Acta Neurol (Napoli) ; 16(5-6): 255-61, 1994 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-7709796

RESUMEN

We present SPECT, electroencephalography (EEG) and magnetic resonance imaging (MRI) data of a homogeneous group of 12 young adults with rare focal seizures and a good response to carbamazepine. Our data suggest that the alterations of the rCBF are independent of severity and duration of the epilepsy and of the frequency of seizures. Based on our experimental data, it may be suggested that complex partial epilepsy is a good biological model to investigate the neurogenic control of cerebral flow and metabolism.


Asunto(s)
Encéfalo/diagnóstico por imagen , Electroencefalografía , Epilepsias Parciales/diagnóstico , Imagen por Resonancia Magnética , Tomografía Computarizada de Emisión de Fotón Único , Adolescente , Adulto , Encéfalo/fisiopatología , Carbamazepina/uso terapéutico , Circulación Cerebrovascular , Epilepsias Parciales/tratamiento farmacológico , Epilepsias Parciales/fisiopatología , Femenino , Humanos , Masculino , Radiografía
10.
Clin Physiol ; 14(6): 671-9, 1994 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-7851063

RESUMEN

Three out of the four Starling pressures were determined at arthroscopy of traumatic effusions of the knee. The range of the joint fluid hydrostatic pressure Pjoint was 5-83 cmH2O (0.5-8.1 kPa, 4-61 mmHg), that of the colloid osmotic pressure difference COPplasma-COPjoint 0-21.7 cmH2O. In 11 of 15 cases the sum Pjoint+COP difference exceeded 32.6 cmH2O (3.19 kPa, 24 mmHg), a high estimate of average capillary pressure at the level of the heart. The number of 'exceeding' cases was 8/15 if only 80% of the COP difference was considered effective. Pjoint and the COP difference oppose filtration of fluid from plasma into joints, indicating that mean capillary pressure, the only Starling pressure not determined, was elevated unless the effusions were being resorbed back into the blood. The findings can be explained by tamponade compensated by arteriolar vasodilatation, suspected to be metabolically mediated.


Asunto(s)
Cartílago Articular/fisiopatología , Traumatismos de la Rodilla/fisiopatología , Membrana Sinovial/irrigación sanguínea , Vasodilatación/fisiología , Adolescente , Adulto , Anciano , Arteriolas/fisiología , Artroscopía , Capilares/fisiología , Permeabilidad Capilar/fisiología , Resistencia Capilar/fisiología , Cartílago Articular/irrigación sanguínea , Cartílago Articular/metabolismo , Niño , Metabolismo Energético , Femenino , Humanos , Presión Hidrostática , Traumatismos de la Rodilla/metabolismo , Masculino , Ósmosis , Análisis de Regresión , Membrana Sinovial/metabolismo , Membrana Sinovial/fisiopatología
11.
Scand J Urol Nephrol ; 28(1): 21-7, 1994 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-8009188

RESUMEN

A prospective study was made of sequential changes in the metabolism of vitamin D and calcium in 19 allograft recipient during the first year after successful renal transplantation. All but one of the patients received cyclosporine A combined with corticosteroids and azathioprine as immunosuppressive therapy. Shortly after transplantation most patients showed transient hypocalcemia and hypophosphatemia. At the time of transplantation 17 of 19 patients had an elevated plasma intact parathyroid hormone (PTH) level, and at the close of follow-up one in four patients. In six other patients intact PTH was within the reference range, but high in relation to simultaneously measured serum ionized calcium. According, one year after transplantation less than half of the patients showed complete resolution of hyperparathyroidism. The change towards normal in the metabolism of vitamin D began within the first post-transplantation week irrespective of the onset of diuresis. One to two weeks after transplantation 1,25(OH)2D3 and 24,25(OH)2D3 reached the lower limit of normal range. In these renal allograft recipients who received cyclosporine A the long-term values of serum 1,25(OH)2D3 did not differ from those of normal subjects.


Asunto(s)
Calcio/sangre , Fallo Renal Crónico/cirugía , Trasplante de Riñón/fisiología , Complicaciones Posoperatorias/sangre , Vitamina D/sangre , 24,25-Dihidroxivitamina D 3/sangre , Adulto , Calcifediol/sangre , Calcitriol/sangre , Trastorno Mineral y Óseo Asociado a la Enfermedad Renal Crónica/sangre , Creatinina/sangre , Femenino , Estudios de Seguimiento , Humanos , Fallo Renal Crónico/sangre , Pruebas de Función Renal , Masculino , Persona de Mediana Edad , Osteocalcina/sangre , Hormona Paratiroidea/sangre , Fosfatos/sangre , Estudios Prospectivos , Albúmina Sérica/metabolismo
12.
Ann Chir Gynaecol ; 83(3): 251-5, 1994.
Artículo en Inglés | MEDLINE | ID: mdl-7857071

RESUMEN

Nineteen diabetic (DM) and twenty-two non-diabetic (NDM) uraemic patients undergoing renal transplantation were studied to evaluate coagulation abnormalities. Thirty-three healthy patients admitted for minor surgery served as controls. Antithrombin III (AT III), thromboelastogram (TEG), other haemostatic parameters and the influence of dialysis treatment were assessed in DM and NDM uraemic patients. All uraemic patients were anaemic and bleeding time was slightly prolonged (NS). The level of AT III was raised in the DM group when compared in the healthy controls (P < 0.001). Prothrombin time (PT) percentage was increased in both uraemic groups (P < 0.001) in comparison with the controls. Thrombocytosis was marked in DM patients (P < 0.001) when compared with controls and NDM patients. TEG parameters were similar in all groups. Continuous peritoneal dialysis treatment (CAPD) was associated with elevated total platelet count in NDM (P < 0.05) and DM group (P < 0.05) when compared with haemodialysis (HD) patients. Also, the PT was shortened in DM patients on CAPD vs HD (P < 0.05). AT III level was elevated in NDM patients on CAPD compared with those on HD (P < 0.05). There was no difference in clinical bleeding tendency during renal transplantation. Postoperatively, one patient in NDM group suffered from thrombosis of the graft artery and transplantectomy had to be performed. Our study showed a prethrombotic state in diabetic uraemic patients admitted for renal transplantation. The increased AT III activity may protect these patients against thrombotic complications. The role of CAPD treatment requires further studies.


Asunto(s)
Trastornos de la Coagulación Sanguínea/diagnóstico , Nefropatías Diabéticas/sangre , Nefropatías Diabéticas/cirugía , Trasplante de Riñón , Uremia/sangre , Uremia/cirugía , Adulto , Antitrombina III/análisis , Trastornos de la Coagulación Sanguínea/etiología , Pruebas de Coagulación Sanguínea , Diabetes Mellitus Tipo 1/complicaciones , Nefropatías Diabéticas/terapia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Diálisis Peritoneal Ambulatoria Continua , Diálisis Renal , Uremia/terapia
13.
Metabolism ; 42(7): 875-81, 1993 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-8345798

RESUMEN

The effects of alcohol abuse on the bone of women have scarcely been investigated, although women are more prone than men to osteoporosis. We studied 19 noncirrhotic female alcoholics (aged 24 to 48 years) hospitalized for 2 weeks for withdrawal and three groups of control women (n = 182). Sixteen patients and all control subjects had regular menstrual cycles. Forearm bone mineral content (BMC) and axial bone mineral density (BMD) were measured by single-photon absorptiometry and dual-energy x-ray absorptiometry, respectively. Parameters of bone metabolism were analyzed at the beginning and end of the withdrawal period. BMC and BMD did not differ between patients and controls at any of the five measurement sites. On admission, bone formation of the alcoholics was depressed as reflected by osteocalcin levels (-48%, P < .01); it normalized during abstention (P < .01). Urinary hydroxyproline, a parameter of bone resorption, and serum intact parathyroid hormone were at the control level throughout the observation period. Serum ionized calcium level increased by 4% (P < .0001), and serum free fatty acid (FFA) levels decreased by 30% (P < .05) during withdrawal; there was an inverse correlation between changes in these two parameters (r = -.49, P < .05). On admission, serum concentrations of 25-hydroxyvitamin D3 [25-OH-D3] and 1,25-dihydroxyvitamin D3 [1,25-(OH)2-D3] were reduced by 46% (P < .001) and 16% (P = .16); these did not normalize during abstention. In conclusion, provided that liver cirrhosis and gonadal dysfunction are not contributing, even heavy drinking does not seem to decrease bone mass in young and middle-aged women.(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Alcoholismo/complicaciones , Osteoporosis/etiología , Adulto , Alcoholismo/metabolismo , Densidad Ósea , Huesos/metabolismo , Calcifediol/sangre , Calcitriol/sangre , Femenino , Humanos , Persona de Mediana Edad
14.
Scand J Clin Lab Invest ; 52(1): 19-25, 1992 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-1594885

RESUMEN

The phospholipase A assay of Hoffmann et al based on the enzymatic photometric determination of the fatty acids liberated from soy-bean phospholipids was compared with the fluorometric assay of Thurén et al. where a synthetic pyrene-labelled substrate is used. Sera from patients with suspected pancreatitis or sepsis were studied. High values compared well while the Hoffmann method was not sensitive enough to detect slightly elevated values in sera from patients with suspected pancreatitis. The phospholipase A2 activities from enzymes purified from human duodenal juice, human sera from patients with sepsis and rat liver mitochondria were characterized in regard to activity towards several synthetic pyrene-labelled substrates, activation by Ca2+ and inhibition by Sr2+ and Mg2+. The enzyme from serum was distinctly different from both the pancreatic secretory and the mitochondrial ones, both in its substrate specificity pattern and in being most strongly inhibited by Mg2+.


Asunto(s)
Fluorometría , Fosfolipasas A/metabolismo , Fotometría , Enfermedad Aguda , Biomarcadores/sangre , Biomarcadores/química , Cationes Bivalentes , Duodeno/citología , Duodeno/enzimología , Humanos , Infecciones/sangre , Infecciones/metabolismo , Secreciones Intestinales/enzimología , Mitocondrias Hepáticas/enzimología , Pancreatitis/enzimología , Fosfolipasas A/sangre , Fosfolipasas A2 , Sensibilidad y Especificidad , Especificidad por Sustrato
15.
Transpl Int ; 5 Suppl 1: S190-2, 1992.
Artículo en Inglés | MEDLINE | ID: mdl-14621772

RESUMEN

Cyclosporin A (CsA) is metabolized principally by the hepatic cytochrome P 450-dependent microsomal enzyme system and eliminated virtually entirely as metabolites, mainly in the bile. Only less than 1% of the oral dose is excreted unmetabolized in the urine or bile. Metabolites account for 50-70% of the total CsA in whole blood. Some of the metabolites have been shown to possess an immunosuppressive and even toxic effect but the role of this effect remains uncertain. In order to evaluate the effect of liver and kidney failure on the metabolism of CsA, we studied twelve patients who had undergone liver transplantation. The samples were collected during the first 4 postoperative weeks. The aim of the study was threefold: to evaluate (1) whether an impairment of liver function, as measured by standard biochemical liver function tests, decreased the metabolism or excretion of CsA; (2) whether an induction of either the CsA metabolites or the parent compound took place in the first postoperative period; and (3) whether kidney failure, as measured by serum creatinine, correlated with blood levels of CsA or its metabolites.


Asunto(s)
Colestasis/orina , Ciclosporina/farmacocinética , Enfermedades Renales/orina , Trasplante de Hígado/efectos adversos , Adulto , Anciano , Ciclosporina/uso terapéutico , Ciclosporina/orina , Femenino , Humanos , Inmunosupresores/farmacocinética , Inmunosupresores/uso terapéutico , Inmunosupresores/orina , Masculino , Persona de Mediana Edad , Periodo Posoperatorio , Análisis de Regresión , Factores de Tiempo
16.
Acta Anaesthesiol Scand ; 35(7): 654-9, 1991 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-1723826

RESUMEN

An in vitro model of surgical bleeding was developed to simulate continuous blood loss and replacement therapy with plasma substitutes and red cell concentrates. The model was used to determine the lowest colloid concentration in vitro for each of the plasma substitutes that sustains colloid osmotic pressure above 2.4 kPa (or 18 mmHg) when used up to the recommended maximal total dose. Plasma, supernatant separated from red cell concentrates and dextran 70, hydroxyethyl starch 120 or albumin were mixed to create dilutions imitating plasma composition in the course of clinical blood loss and replacement therapy. The relative volume of each component was calculated according to the model when the bleeding was equal to multiples of 10% of blood volume up to a blood loss of 120%. Our measurements indicate that the colloid concentrations of 5.0% for albumin, 4.0% for hydroxyethyl starch 120 and 3.5% for dextran 70 preserve colloid osmotic pressure above 2.4 kPa.


Asunto(s)
Permeabilidad Capilar/efectos de los fármacos , Transfusión de Eritrocitos , Sustitutos del Plasma/farmacocinética , Albúminas/farmacocinética , Pérdida de Sangre Quirúrgica , Permeabilidad Capilar/fisiología , Dextranos/farmacocinética , Humanos , Derivados de Hidroxietil Almidón/farmacocinética , Técnicas In Vitro , Modelos Biológicos , Presión Osmótica
17.
Alcohol Clin Exp Res ; 14(4): 551-6, 1990 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-2221282

RESUMEN

To study the effect of prolonged ethanol consumption on calcium metabolism and on the prevalence of osteoporosis we examined 38 Finnish noncirrhotic male alcoholics (30-55 years of age) with dietary interviews and biochemical measurements and by measuring the bone mineral content of the forearm using single photon absorptiometry (SPA) and the bone mineral density of the spine, humerus and proximal femur using nonquantified computer tomography (CT) and dual-energy x-ray absorptiometry (DEXA). In comparison two groups of healthy controls were studied. The mean daily dietary intake of calcium was 1.3 g in the patients and 1.2 g in the controls. The dietary intake of vitamin D was equal in the study groups, too. The serum levels of calcium, phosphate and parathyroid hormone did not show any difference between the patients and controls but in the alcoholics the urinary excretion of calcium was reduced by 42% (p less than 0.0001) as compared to the controls. The serum levels of 25-hydroxyvitamin D3, 1,25-dihydroxyvitamin D3, and 24,25-dihydroxyvitamin D3 were reduced in the alcoholics by 40% (p less than 0.0001), 23% (p less than 0.01), and 48% (p less than 0.0001), respectively, as compared to the controls. The alcoholic men had normal levels of serum testosterone and they did not have hypercortisolism. The bone mineral content of the dominant forearm measured by SPA was similar in the study groups as were the bone mineral densities (BMD) of the lumbar and humeral areas measured by CT. The BMD at the lumbar, femoral neck, Ward's triangle and trochanter sites measured by DEXA did not differ, either.(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Alcoholismo/sangre , Densidad Ósea/efectos de los fármacos , Vitamina D/sangre , 24,25-Dihidroxivitamina D 3/sangre , Adulto , Consumo de Bebidas Alcohólicas , Calcifediol/sangre , Calcitriol/sangre , Calcio/sangre , Calcio de la Dieta/administración & dosificación , Finlandia , Humanos , Pruebas de Función Hepática , Masculino , Persona de Mediana Edad
18.
J Bone Joint Surg Br ; 72(4): 615-7, 1990 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-2380213

RESUMEN

Serial serum C-reactive protein (CRP) measurements were made, for three weeks, in 42 consecutive patients with solitary tibial fractures. The CRP response was related to the treatment: lower values were observed in 27 patients treated conservatively than in 15 operated patients. Open reduction and plating resulted in a greater response than closed intramedullary nailing. The timing of the CRP response was related to the timing of the treatment: the highest values were usually recorded two days after admission or operation. The timing of the operation did not affect the degree of CRP response. Neither the site, nor the type of fracture, nor the age of the patient played any role. Awareness of these natural CRP responses after fractures may help in the diagnosis of early post-traumatic and postoperative complications, especially infections.


Asunto(s)
Proteína C-Reactiva/análisis , Fracturas de la Tibia/sangre , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Fijación de Fractura/métodos , Humanos , Masculino , Persona de Mediana Edad , Fracturas de la Tibia/cirugía , Fracturas de la Tibia/terapia , Factores de Tiempo
19.
Aging (Milano) ; 2(1): 39-48, 1990 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-2094354

RESUMEN

This study aimed to assess the relationships between the scores of subjective assessment (metamemory) and those of performance testing for memory, on the one hand, and the level of depression, on the other. A hundred and eighty elderly subjects (102 women and 78 men; mean age 65.7 years) were selected for the study. They showed neither intellectual impairment (as assessed through Mini Mental State test: MMS) nor neuropsychiatric symptoms. Each subject was administered the Randt Memory Test (RMT) for performance testing, the Sehulster Memory Scale (SMS) for the subjective assessment, and the Geriatric Depression Scale (GDS). A MULTCOVA analysis showed that both age and the depression level are negatively correlated with both the measures (Acquisition-Recall: AR; Delayed Memory: DM) of the RMT. The scores of the second (memory complaints) of the three sets of SMS were positively correlated with those of AR and DM indices. A Multivariate Regression Analysis showed that in males age and the depression level were significant regressors for both AR and MD scores while in females only the depression level was a significant regressor for AR and only age was a significant regressor for DM. Our results suggest that a) the relationships between the depression level and memory functioning are close, although not fully homogeneous in men and women; and b) that the scores in some areas of metamemory parallel, independently of the level of depression, the performance outcomes of memory functioning.


Asunto(s)
Depresión/psicología , Memoria , Pruebas Neuropsicológicas , Autoevaluación (Psicología) , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Valores de Referencia , Análisis de Regresión
20.
Scand J Clin Lab Invest Suppl ; 200: 34-8; discussion 39-40, 1990.
Artículo en Inglés | MEDLINE | ID: mdl-2399435

RESUMEN

A recommendation concerning basic urine examinations and bacteriological cultures was published in 1983 in Finland including three clinical indication groups with different screening strategies. Close cooperation between laboratory experts and clinicians as well as much training in urine sediment cytology were essential before the new principle became widely accepted. Decreased workload in laboratories in clinically less significant cases was shown with the use of the full capacity and qualities of complete urinalysis when needed. Standardized test procedures combined with sediment staining improved the clinical efficiency of urine microscopy.


Asunto(s)
Enfermedades Renales/diagnóstico , Orina/análisis , Enfermedades Urológicas/diagnóstico , Finlandia , Humanos , Métodos , Orina/citología , Orina/microbiología
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