Opiniones y recomendaciones de la Sociedad Argentina de Diabetes. Hemoglobina A1c / Opinions and recommendations of the Argentine Diabetes Society. Hemoglobin A1c

La estandarización de la hemoglobina A1c (HbA1c) permitió en algunos países su uso para el diagnóstico de la diabetes mellitus (DM) y la prediabetes, además de su empleo en el seguimiento del paciente con DM. Es importante recordar que se trata de una medida indirecta del promedio glucémico durante el tiempo de vida media del eritrocito, pudiendo verse afectada por variables no glucémicas, como también por interferencias analíticas según la metodología empleada para su determinación. A continuación, se describen las recomendaciones y consideraciones a tener en cuenta para la determinación de la HbA1c cuando se emplea como criterio diagnóstico de la DM, teniendo en cuenta que al utilizarla para tal fin es necesario que la medida se realice con métodos certificados y estandarizados al ensayo utilizado en el Diabetes Control and Complications Trial (DCCT).

The standardization of hemoglobin A1c (HbA1c) allowed in some countries its use for the diagnosis of diabetes mellitus (DM) and prediabetes, in addition to its use in the follow-up of patients with DM. It is important to highlight that it is an indirect measurement of the glycemic average during the halflife of the erythrocyte, and may be affected by non-glycemic variables, as well as by analytical interferences depending on the methodology used for its determination. The recommendations and considerations to take into account for the determination of HbA1c when it is used as a diagnostic criterion for diabetes are described below. In addition, it is important to emphasize that it is essential that the HbA1c measurement be performed with certified and standardized methods to the Diabetes Control and Complications Trial (DCCT)results.

Opiniones y recomendaciones de la Sociedad Argentina de Diabetes. Glucemia en ayunas alterada: ¿es oportuno utilizar el punto de corte en 100 mg/dl en Argentina? / Opinions and recommendations of the Argentine Diabetes Society. Impaired fasting blood glucose: is it appropriate to use a cut-off point of 100 mg/dl in Argentina?

Establecer el punto de corte entre la glucemia en ayunas normal y la alterada resulta de suma importancia a los efectos de considerar a un paciente en riesgo, tanto de progresar a estdos más avanzados de la enfermedad como de sufrir complicaciones micro y macroangiopáticas. Desde 2006 la Sociedad Argentina de Diabetes (SAD), sobre la base de la evidencia considerada en ese momento, estableció el límite inferior de la glucemia alterada en ayunas (GAA) en 110 mg/dl; posteriormente, durante 2022, la Comisión Directiva de la SAD convocó a un grupo de expertos con el objeto de evaluar si esta recomendación debía mantenerse o, al igual que otras sociedades científicas de prestigio, adoptar a tal efecto 100 mg/dl. En este documento de Opiniones y Recomendaciones se encuentran los fundamentos por los cuales la SAD adoptará, de ahora en más, 100 mg/dl como límite inferior de la GAA, en base a las nuevas evidencias científicas que muestran que desde este punto de corte se produce un aumento en la progresión a la diabetes mellitus y de las complicaciones tanto macro como microangiopáticas.

To establish the cut-off point between normal and impaired fasting glycemia (IFG) is extremely important for the purposes of considering a patient at risk both of progressing to more advanced stages of the disease and of suffering micro- and macroangiopathic complications. Since 2006, the Argentine Diabetes Society (ADS), based on the evidence considered at that time, established the lower limit of IFG at 110 mg/d, laterduring the year 2022, The Board of Directors of the ADS vened a group of experts in order to assess whether this recommendation should be maintained or, like other prestigious scientific societies, adopt 100 mg/dl for this purpose. This Opinions and Recommendations document contains therationale for which the SAD will adopt, from now on, 100 mg/dlas the lower limit of the IFG, based on the new scientific edence that shows that from this cut-off point it produces increase in progression to diabetes and both macro and microangiopathic complications.

Asociación entre uricemia y síndrome metabólico en un centro hospitalario de Corrientes / Association between uricemia and metabolic syndrome in a hospital center in Corrientes

Resumen Introducción: en los últimos años numerosa evidencia científica sugiere que la hiperuricemia puede jugar un papel en el desarrollo del síndrome metabólico (SM). En algunos estudios se ha explorado la asociación entre la uricemia y la presencia de SM. Sin embargo, aún no está del todo esclarecido si altos niveles del ácido úrico se relacionan de una manera causal con el desarrollo del SM. Más aún, existen pocos estudios acerca de la presencia del SM y su relación con los niveles de AU en la ciudad de Corrientes. Objetivos: determinar la relación de los niveles séricos de AU y los parámetros que definen el SM en pacientes que concurren al consultorio externo de Clínica Médica y Medicina General del Hospital Ángela I. de Llano, Corrientes, Argentina. Resultados: se incluyó un total de 435 pacientes mayores de 18 años: 312 mujeres (72%) y 123 hombres (28%). El 58% de la población cumplía con el criterio de SM del NCEP-ATP III (60% mujeres y 52% hombres). El 75% presentó hiperuricemia y SM. En este estudio la presencia de SM se asoció significativamente con los valores de uricemia OR: 1.5 (IC 95%: 1,3-1,8). La asociación fue estadísticamente significativa. Conclusiones: los resultados demostraron que el aumento de la frecuencia de los componentes del SM está en relación directa con el incremento de los niveles séricos de AU, y que el valor de corte para esta asociación fue de 4 mg/dl; de ahí la importancia de considerar la determinación de los niveles séricos de AU como posible predictor de SM.

Abstract Introduction: in recent years, numerous scientific evidence suggest that hyperuricemia may play a role in the development of metabolic syndrome (MS). Some studies have explored the association between uricemia and the presence of MS. However, it remains unclear whether high uric acid levels are causally related to the development of MS. Moreover, there are few studies on the presence of metabolic syndrome and its relationship with uric acid (UA) levels in the city of Corrientes, Argentina. Objectives: to determine the relationship between serum UA levels and the parameters that define MS in patients attending the outpatient clinic of Medical Clinic and General Medicine of the Ángela I. de Llano Hospital, Corrientes. Results: a total of 435 patients over 18 years of age were included: 312 (72%) women and 123 (28) men. Fifty-eight percent of the population met the NCEP-ATP III criteria for MS (60% females and 52% males). Seventy-five percent of the population had hyperuricemia and MS. In this study the presence of MS was significantly associated with uricemia values OR:1.5 (95%CI:1.3-1.8). The association is statistically significant. Conclusions: the results show that the increase in the frequency of the components of MS, goes in direct relation with the increase in serum UA levels and that the cut-off value for this association is 4 mg/dl. Hence the importance of considering the determination of serum UA levels as a possible predictor of MS.

Dopplervelocimetria nas gestações complicadas por hiperglicemia - curva do índice de pulsatilidade da artéria umbilical / Doppler velocimetry of pregnancies complicated by hyperglycemia - curve of the pulsatility index of the umbilical artery

Construir uma curva de PI umbilical exclusiva de gestações complicadas por diabete melito (DM) ou hiperglicemia e compará-la com curvas de referência (Arduini e Rizzo, 1990; Sakamoto, 2007). Estudo longitudinal, onde foram incluídas 163 gestantes e excluídos os casos de gemelaridade, malformação, dificuldade técnica e menos de cinco consultas no pré-natal. Foram avaliados idade materna, índice de massa corporal (IMC) pré-gestacional, número de gestações e associação com tabagismo e hipertensão arterial (HA), além dos níveis de hemoglobina glicada (HbA1c) no final da gestação. No total, foram avaliadas 431 medidas de PI umbilical, entre 24 e 41 semanas de gestação. Para cada semana gestacional foram realizadas medidas de tendência central e de dispersão dos valores atribuídos e calculados os índices dos respectivos percentis (P5, 10, 25, 50 e 95). A correlação, a equação de predição e os intervalos de confiança (IC 95%) foram estimados por análise de regressão linear simples. Realizou-se comparação qualitativa por sobreposição das três curvas e, quantitativa, entre as curvas do estudo e de Sakamoto (2007). Adotou-se o limite de significância de 95% (p < 0,05). A equação de predição do PI umbilical foi expressa por [PI umb = 1,521 - 0,018* semana de gestação]. Os limites de P95 do PI umbilical evoluíram sempre abaixo dos limites da curva de referência de Arduini e Rizzo (1990) e apresentaram queda acentuada a partir da 37ª. semana, quando se confirmou diferença estatística em relação aos índices de Sakamoto (2007)...

To construct a curve PI umbilical exclusive of pregnancies complicated by diabetes mellitus (DM) or hyperglycemia and compare it with reference curves (Arduini and Rizzo, 1990; Sakamoto, 2007). A longitudinal study where 163 women were included and excluded cases of multiple births, malformations, technical difficulty and less than five prenatal visits. We assessed maternal age, body mass index (BMI) before pregnancy, number of pregnancies and is associated with smoking and hypertension (HA), and levels of glycated hemoglobin (HbA1c) in late pregnancy. In total, 431 measurements were evaluated umbilical PI, between 24 and 41 weeks gestation. For each gestational week were performed measures of central tendency and dispersion values assigned and calculated indices of the respective percentiles (P5, 10, 25, 50 and 95). The correlation equation prediction and confidence intervals (95% CI) were estimated by linear regression analysis. We carried out a qualitative comparison of the three curves overlap and quantitative study between the curves and Sakamoto (2007). The adopted threshold of significance of 95% (p <0.05).The prediction equation was expressed by umbilical PI [PI umb = 1.521 - 0.018 * week of pregnancy...