La crítica y la educación médica: hacia un conocimiento liberador. Parte II / Critique and medical education: towards liberating knowledge. Part II

Resumen La crítica del quehacer médico como espacio educativo implicó caracterizar el entramado de lógicas, ideas y prácticas prevalentes: la disyunción y el reduccionismo; el binomio salud-enfermedad; la historia natural de la enfermedad; la medicalización de la vida social; la tecnologización deshumanizante de la práctica médica, y la medicina supresora reduccionista. La crítica continúa discutiendo la contribución de ese entramado al control social como agente de la dominación de los intereses de lucro sin límites y como expresión del poder de la industria de la salud, justificándose con la argumentación de alternativas tendientes a superar ese entramado: la lógica transdisciplinaria y el concepto de organismo como totalidad jerarquizada e interactuante con su entorno respecto de la disyunción y el reduccionismo; la historia cultural de la enfermedad como alternativa a la historia natural de la enfermedad y al binomio salud-enfermedad; el bien vivir, la búsqueda de la superación espiritual, intelectual, moral y convivencial que confiere sentido profundo a la vida humana, como alternativa a la medicalización y antídoto de la tecnologización deshumanizante y los rasgos degradantes; la medicina estimulante de fuerzas curativas endógenas para afecciones crónicas no trasmisibles, cuyo fundamento de factibilidad y credibilidad radica en la omnipresencia del efecto placebo con respecto a la medicina supresora, basada en fármacos con efectos secundarios indefectibles. Sin una educación basada en la crítica, difícilmente el conocimiento liberador podrá acompañar y orientar a médicos y otros profesionales a organizarse en la búsqueda, desde su ámbito, de un mundo inclusivo, igualitario, justo, solidario y cuidadoso del ecosistema planetario.

Abstract The critique of medicine begins at unveiling and specifying its network of predominant logics, ideas and practices: logics of disjunction and reductionism; the health-disease binomial; the natural history of the disease; the medicalization of social life; the dehumanizing technologization of medical practice and reductionist suppressive medicine. It goes on to argue about its role as agents of domination of limitless profit interests and as an expression of the power of the health industry, justifying itself with the proposal of alternatives tending to overcome that network: transdisciplinarity and the concept of organism as hierarchical totality and interacting with its environment, with respect to disjunction and reductionism; the cultural history of the disease in relation to the health-disease binomial and the dehumanizing technologization; good living, the search for spiritual, intellectual, moral and coexistence growth as meaning of human life, as an alternative to the medicalization and antidote of degrading traits and stimulating medicine of the endogenous healing forces of the organism whose foundation of possibility and credibility is the placebo effect as an alternative to suppressive therapy for non-communicable chronic conditions, based on the pharmacological effect with unfailing side effects. It concludes that without an education based on critique, liberating knowledge would hardly accompany and guide the various social groups in the search for an inclusive, pluralistic, egalitarian, fair, solidary and caring of the planetary ecosystem world.

Indicadores socioeconómicos de la obesidad materna en México y Francia: análisis comparado de dos cohortes / Socioeconomic determinants of maternal obesity in Mexico and France: comparative analysis of two cohorts

RESUMEN Objetivo Identificar y analizar los indicadores socioeconómicos de obesidad materna en México y Francia. Metodología Estudio comparativo de dos cohortes EDEN sus siglas en francés (Etude des déterminants pré et post natals précoces de la santé et de développement de l'enfant) (Francia) y NUTTSEA (México). La población de estudio se conformó por mujeres que solicitaron consulta prenatal en semana 24 de gestación. Los datos fueron recolectados con cuestionarios y entrevistas semi-estructuradas. Las variables de interés fueron aspectos socioeconómicos, alimentación, antropometría y seguridad alimentaria. El análisis cuantitativo se realizó utilizando Stata y el análisis cualitativo con Atlas-ti. Resultados En cohorte EDEN el 68.6% resultó con edad de 25-34 años, el 73% tenían un empleo remunerado, el 53% preparatoria completa; el 6.6% refirió tener dificultad para acceder a los alimentos; la media del IMC gestacional fue de 23.23±4.6. En la cohorte NUTTSEA el 55% se encontraba en el rango de edad de 18-24 años; el 15% refirió contar con un empleo remunerado; el 42% de la población tenía secundaria completa; el 32.1% presentó un grado de inseguridad alimentaria; la media de IMC fue de 27.8±4.8. Conclusiones Los resultados cuali-cuantitativos de ambas cohortes sugieren que poblaciones con mayor vulnerabilidad socio-económica son más propensas a la obesidad materna, determinando directrices sobre barreras y facilitadores para fortalecer programas de prevención de la obesidad materna.(AU)

ABSTRACT Objective To identify and analyze the socioeconomic indicators of maternal obesity in Mexico and France. Material and Methods Comparative study of two cohorts: EDEN (France) and NUTTSEA (Mexico). The study population consisted of women who requested prenatal consultation at week 24 of pregnancy. Data were collected using questionnaires and semi-structured interviews. The variables of interest were socioeconomic aspects, nutrition, anthropometry and food security. The quantitative analysis was performed using Stata and the qualitative analysis with Atlas-ti. Results In the EDEN cohort, 68.6% were aged 25-34 years, 73% had paid employment and 53% completed high school. In addition, 6.6% reported having difficulty accessing food and the mean gestational BMI was 23.23 ± 4.6. In the NUTTSEA cohort, 55% were in the age range 18-24 years, 15% reported having paid employment, 42% had completed secondary education, 32.1% presented a degree of food insecurity, and the mean BMI was 27.8 ± 4.8. Conclusions The qualitative and quantitative results of both cohorts suggest that populations with greater socio-economic vulnerability are more prone to maternal obesity, which leads to determine guidelines on barriers and facilitators to strengthen programs to prevent it maternal obesity.(AU)

Preoperatively undiagnosed papillary thyroid carcinoma in patients thyroidectomized for benign multinodular goiter

ABSTRACT Objective Incidental thyroid cancers (ITCs) are often microcarcinomas; among them, the most frequent histotype is the papillary one. The purpose of this study was to evaluate the rate of papillary thyroid cancer (PTC) in patients thyroidectomized for benign multinodular goiter. Subject and methods We retrospectively evaluated the histological incidence of PTC in 207 consecutive patients who, in a 1-year period, underwent thyroidectomy for benign multinodular goiter. All patients came from an iodine-deficient area (Orleans, France) with three nuclear power stations located in the neighboring areas of the county town. Results Overall, 25 thyroids (12.1%) harbored 37 PTC, of which 31 were microcarcinomas. In these 25 PTC patients, mean age was 55 ± 10 years (range 30-75), female:male ratio 20:5 (4:1). In 10 patients (40% of 25 and 4.8% of 207), PTCs were bilateral, and in 7 (2 with microPTCs) the thyroid capsule was infiltrated. These 7 patients underwent central and lateral cervical lymph node dissections, which revealed lymph node metastases in one and two cases, respectively. Radioiodine treatment was performed in 7 cases. Neither mortality nor transient and permanent nerve injuries were observed. Four (16%) transient hypocalcaemias occurred as early complications. At last follow-up visit (mean length of follow-up 17.2 ± 3.4 months), all patients were doing well and free of any clinical local recurrence or distant metastases. Conclusion With a 12% risk that multinodular goiter harbors preoperatively unsuspected PTCs, which can have already infiltrated the capsule and that can be accompanied by PTC foci contralaterally, an adequate surgical approach has to be considered.

Heart Transplantation for Peripartum Cardiomyopathy: A Single-Center Experience / Transplante Cardíaco por Cardiomiopatia Periparto: Uma Experiência de Centro Único

Abstract Background: Peripartum cardiomyopathy is an idiopathic disorder defined by the occurrence of acute heart failure during late pregnancy or post-partum period in the absence of any other definable cause. Its clinical course is variable and severe cases might require heart transplantation. Objective: To investigate long-term outcomes after heart transplantation (HT) for peripartum cardiomyopathy (PPCM). Methods: Out of a single-center series of 1938 HT, 14 HT were performed for PPCM. We evaluated clinical characteristics, transplant-related complications, and long-term outcomes, in comparison with 28 sex-matched controls. Primary endpoint was death from any cause; secondary endpoints were transplant-related complications (rejection, infection, cardiac allograft vasculopathy). A value of p < 0.05 was considered of statistical significance. Results: PPCM patients and matched controls were comparable for most variables (all p values > 0.05), except for a higher use of inotropes at the time of HT in PPCM group (p = 0.03). During a median follow-up of 7.7 years, 16 patients died, 3 (21.5%) in PPCM group and 13 (46.5%) in control group. Mortality was significantly lower in PPCM group (p = 0.03). No significant difference was found in terms of transplant-related complications (p > 0.05). Conclusions: Long-term outcomes following HT for PPCM are favorable. Heart transplantation is a valuable option for PPCM patients who did not recover significantly under medical treatment.

Resumo Fundamento: A cardiomiopatia periparto é uma doença idiopática definida pela ocorrência de insuficiência cardíaca aguda durante a gravidez tardia ou pós-parto na ausência de qualquer outra causa definível. Seu curso clínico é variável e casos graves podem exigir transplante. cardíaco. Objetivo: Pesquisar os resultados a longo prazo após transplante cardíaco (TC) por cardiomiopatia periparto (CMPP). Métodos: De uma única série central de 1938 TC, 14 TC foram realizados por CMPP. Foram avaliadas características clínicas, complicações relacionadas ao transplante e resultados a longo prazo, em comparação com 28 controles pareados por gênero. O principal critério de avaliação foi a morte por qualquer causa; os critérios secundários foram complicações relacionadas ao transplante (rejeição, infecção, vasculopatia do aloenxerto cardíaco). Um valor de p < 0,05 foi considerado estatisticamente significante. Resultados: As pacientes com CMPP e controles pareados foram comparáveis ​​para a maioria das variáveis (todos os valores de p > 0,05), exceto para um maior uso de inotrópicos no momento do TC no grupo CMPP (p = 0,03). Durante um seguimento médio de 7,7 anos, 16 pacientes morreram, 3 (21,5%) no grupo CMPP e 13 (46,5%) no grupo controle. A mortalidade foi significativamente menor no grupo CMPP (p = 0,03). Não foram encontradas diferenças significativas em termos de complicações relacionadas ao transplante (p> 0,05). Conclusões: Os resultados a longo prazo após TC para CMPP são favoráveis. O transplante cardíaco é uma opção valiosa para pacientes com CMPP que não se recuperaram significativamente sob tratamento médico.

Urodynamics in a community-dwelling population of females 80 years or older: which motive? Which diagnosis?

PURPOSE: To determine why community-dwelling women aged 80 years or over were referred for urodynamic evaluation despite their advanced age and which urodynamic diagnosis was made. MATERIALS AND METHODS: One hundred consecutive females (80-93 years) were referred to our urodynamics outpatient clinic for evaluation of lower urinary tract symptoms (LUTS) between 2005 and 2008. Clinical evaluation comprised of a previous history of LUTS, previous medical history of neurological disease or dementia, pelvic floor dysfunction or prior pelvic surgery. Exclusion criteria were complete retention and severe dementia involving failure to understand simple instructions. Assessed items were results of uroflows (free flow and intubated flow), cystometry and urethral pressure profilometry, and final urodynamic diagnosis. RESULTS: The main complaint evoked by the patients was incontinence (65.0 percent) of which 61.5 percent was "complicated" and urgency was reported by 70.0 percent. Interpretable free flow at arrival was very low (44.0 percent). Prevalence of detrusor overactivity was high, found in 45 patients of whom 16 had detrusor hyperactivity with impaired detrusor contractility. Detrusor overactivity and urgency were strongly associated (p = 0.004). Twenty-five patients had intrinsic sphincteric deficiency alone and 15 detrusor underactivity. CONCLUSION: In this particular community-dwelling with an elderly female population, urodynamics is easily feasible. Incontinence, mainly "complicated" is the more frequent complaint and urgency the more frequent symptom. Urodynamic diagnosis underlines the high incidence of detrusor overactivity as well as impaired detrusor function.

Diagnosis of congenital toxoplasmosis: prenatal and neonatal evaluation of methods used in Toulouse University Hospital and incidence of congenital toxoplasmosis

The aim of this study was to determine the incidence of congenital toxoplasmosis (CT) and to assess the performances of prenatal and neonatal diagnoses. From 1994-2005, in Toulouse University Hospital, France, amniocentesis was performed on 352 pregnant women who were infected during pregnancy. All women were treated with spiramycin and pyrimethamine-sulfadoxine when prenatal diagnosis was positive. Among the 275 foetuses with follow-up, 66 (24 percent) were infected. The transmission rates of Toxoplasma gondii were 7 percent, 24 percent and 59 percent in the first, second and third trimesters, respectively. The sensitivity and specificity of PCR on amniotic fluid (AF) were 91 percent and 99.5 percent, respectively. One case was diagnosed by mouse inoculation with AF and six cases were diagnosed by neonatal or postnatal screening. The sensitivity and specificity of PCR on placentas were 52 percent and 99 percent, respectively. The sensitivity of tests for the detection of specific IgA and IgM in cord blood was 53 percent and 64 percent, respectively, and specificity values were 91 percent and 92 percent. In conclusion, PCR performed on AF had the highest levels of sensitivity and specificity for the diagnosis of CT. This permits an early diagnosis of most cases and should be recommended.

Relationship Between the Extent of Chromosomal Losses and the Pattern of CpG Methylation in Gastric Carcinomas

The extent of unilateral chromosomal losses and the presence of microsatellite instability (MSI) have been classified into high-risk (high- and baseline-level loss) and low-risk (low-level loss and MSI) stem-line genotypes in gastric carcinomas. A unilateral genome-dosage reduction might stimulate compensation mechanism, which maintains the genomic dosage via CpG hypomethylation. A total of 120 tumor sites from 40 gastric carcinomas were examined by chromosomal loss analysis using 40 microsatellite markers on 8 chromosomes and methylation analysis in the 13 CpG (island/non-island) regions near the 10 genes using the bisulfite-modified DNAs. The high-level-loss tumor (four or more losses) showed a tendency toward unmethylation in the Maspin, CAGE, MAGE-A2 and RABGEF1 genes, and the other microsatellite-genotype (three or fewer losses and MSI) toward methylation in the p16, hMLH1, RASSF1A, and Cyclin D2 genes (p<0.05). The non-island CpGs of the p16 and hMLH1 genes were hypomethylated in the high-level-loss and hypermethylated in the non-high-level-loss sites (p<0.05). Consequently, hypomethylation changes were related to a high-level loss, whereas the hypermethylation changes were accompanied by a baseline-level loss, a low-level loss, or a MSI. This indicates that hypomethylation compensates the chromosomal losses in the process of tumor progression.

Perspectiva desenvolvimental no estudo da representação social da AIDS / A developmental perspective in the study of social representation of AIDS

Esta pesquisa se situa na perspectiva das representações sociais e se propõe a estudar o que crianças e adolescentes sabem sobre a AIDS e como percebem o impacto da epidemia no seu futuro. A população estudada foi de 302 estudantes (10-15) de escolas sociologicamente contrastadas de Paris. Foi aplicado um questionário a cinco turmas do ensino primário e a 11 turmas do ensino intermediário, após realização de entrevistas semi-diretivas. Os resultados foram obtidos a partir da análise fatorial de correspondências. Os resultados foram divididos em dois conjuntos: análise das atitudes frente à AIDS e análise dos conhecimentos. O primeiro eixo fatorial diferencia os alunos que conhecem e se interessam pela AIDS, e se mostram solidários com a população contaminada, e os alunos que não conhecem e não se interessam pela doença, e também não se mostram interessados pelos doentes. O segundo eixo revela uma população que conhece mas não expressa carga efetiva diante das mensagens das campanhas de prevenção. As conclusões apontam para o papel determinante das atitudes, e a multiplicidade dos fatores que as determinam, na estruturação da representação social. Entretanto, a finalidade prática das representações sociais conduz a um saber lacunar na maioria dos sujeitos investigados.

Epidemiological markers of group A streptococcal infections in France.

BACKGROUND & OBJECTIVES: A limited number of biotypes, T-types, and emm-types have been found to be associated with invasive isolates of group A streptococci, confirming the involvement of the M protein in virulence and its importance as an epidemiological marker. In this study, the epidemiological markers in the clinical isolates of group A streptococci were compared in invasive and non invasive isolates. METHODS: From 1998 to 2001, 141 invasive and 353 non invasive isolates in France were studied and their biotype, T-type, and emm-type were determined. RESULTS: The invasive isolates were mostly obtained from blood whereas the non invasive isolates were isolated from throat. Most of the isolates were of biotype 1. The invasive isolates were mostly of the T-type 1 associated with emm-type 1. The T-type 4 associated with emm-type 4 and the T-type 28 associated with emm-type 28 were also frequent. Invasive isolates responsible for puerperal sepsis and non invasive isolates were mostly of the T-type 28 associated with emm-type 28. INTERPRETATION & CONCLUSION: This study confirms the high prevalence of isolates of biotype 1, T-type 1, and emm-type 1 among invasive isolates of group A streptococci. The emm-type 28 associated with T-type 28 was frequently observed in non-invasive isolates. A prospective study is being conducted to update the prevalence of the different emm-types in France, which will be of importance for the development of future vaccines.