Disfunção Ventricular e do Átrio Esquerdo Subclínica em Pacientes com Acromegalia: Um Estudo de Ecocardiograma de Rastreamento de Manchas / Subclinical Left Atrial and Ventricular Dysfunction in Acromegaly Patients: A Speckle Tracking Echocardiography Study

Resumo Fundamento Embora se saiba que a fração de ejeção (FE) do ventrículo esquerdo (VE) medida por eletrocardiograma seja preservada em pacientes com acromegalia, não há informação suficiente sobre deformação longitudinal global e deformação do átrio esquerdo (SLG-VE e SAE). Objetivo O objetivo deste estudo foi avaliar as funções do ventrículo esquerdo (VE) e do átrio esquerdo (AE) por ecocardiograma strain (ES) em pacientes com acromegalia. Métodos Este estudo incluiu 50 pacientes com acromegalia na forma ativa da doença e 50 controles saudáveis com idade, sexo e área de superfície corporal similares. Além dos ecocardiogramas de rotina, medições de SLG-VE e SAE foram realizadas com o ES. Resultados Os valores dos SAE e SLG-VE foram significativamente mais baixos em pacientes com acromegalia (p<0,05 para todos). Na análise bivariada, a pressão arterial sistólica, o pró-hormônio N-terminal do peptídeo natriurético cerebral, o fator de crescimento semelhante à insulina tipo 1, e detectou-se que os níveis de IMVE tinham correlação positiva com SAE e SLG-VE (p<0,05). O nível de IGF-1 tinha forte correlação com SAE e SLG-VE (p<0,001 e β=0,5 vs. p<0,001 e β=0,626, respectivamente); 48% dos pacientes com acromegalia têm SLG-VE reduzido (<20%). O índice de massa do ventrículo esquerdo (IMVE) determina independentemente a presença de SLG-VE reduzido, e cada 1g/m2 de aumento no nível de IMVE aumenta a probabilidade de redução de SLG-VE em 6%. Conclusão Embora a fração de ejeção de VE seja normal em pacientes com acromegalia, os valores de SAE e SLG-VE são significativamente mais baixos. Além do aumento em IMVE, outro achado do envolvimento cardíaco pode ser a redução de SAE e SLG-VE. Portanto, além do ecocardiograma de rotina, SAE e SLG-VE podem ser úteis para avaliar os sinais iniciais de envolvimento cardíaco antes da ocorrência de alterações cardíacas irreversíveis.

Abstract Background Although it is known that the left ventricular (LV) ejection fraction (EF) measured by echocardiography is preserved in patients with acromegaly, there is not enough information about the LV and left atrial strain (LV-GLS and LAS). Objective This study aimed to evaluate the left ventricular (LV) and left atrial (LA) functions with strain echocardiography (SE) in patients with acromegaly. Methods This study included 50 acromegaly patients with active disease and 50 healthy controls with similar age, gender, and body surface area. In addition to routine echocardiography examinations, LV-GLS and LAS measurements were performed with SE. Results LAS and LV-GLS values were significantly lower in patients with acromegaly (p<0.05 for all). In bivariate analysis, systolic blood pressure, N-terminal prohormone of brain natriuretic peptide, Insulin-like growth factor-1, LA diastolic diameter, and LVMI levels were found to be positively correlated with both LAS and LV-GLS (p <0.05). IGF-1 level was strongly correlated with LAS and LV-GLS (p<0.001 and β=0.5 vs. p<0.001 and β=0.626, respectively); 48% of patients with acromegaly have reduced LV-GLS (<20%). Left ventricular mass-index (LVMI) independently determines the presence of reduced LV-GLS and each 1g/m2increase in LVMI level increases the likelihood of reduced LV-GLS by 6%. Conclusion Although LV ejection fraction is normal in patients with acromegaly, LAS and LV-GLS values were significantly reduced. Apart from LVMI increase, another finding of cardiac involvement may be LAS and LV-GLS decrease. Therefore, in addition to routine echocardiography, LAS and LV-GLS may be useful to evaluate early signs of cardiac involvement before the occurrence of irreversible cardiac changes.

Remisión espontánea de acromegalia y enfermedad de Cushing en adultos mayores: casos clínicos / Spontaneous remission of acromegaly and Cushing's disease in older patients: report of two cases

Pituitary diseases such as acromegaly and Cushing's disease require surgical or medical therapy. In some functioning pituitary tumors, a spontaneous remission of hormonal hypersecretion is observed, mainly associated to apoplexy or pituitary infarction. We report the evolution of two female patients older than 70 years at the time of diagnosis, with multiple comorbidities. In case 1, acromegaly was diagnosed at 74 years of age. Sellar CT scan showed a 10-mm adenoma. During her follow-up, IGF1 levels remained normal. Nine years later, a magnetic resonance (MR) showed a 7-mm adenoma. In case 2, clinical and biochemical diagnosis of Cushing's disease was done being 71 years old. Sellar MR showed a 6-mm adenoma. Three years later, urinary cortisol normalized with no changes in adenoma at MR. Seven years later, she remains without clinical or biochemical signs of hypercortisolism. In both cases, no signs of hemorrhage were observed at MR.

Guía de recomendaciones para el diagnóstico clínico, bioquímico y por imágenes de la acromegalia. Federación Argentina de Sociedades de Endocrinología (FASEN) - 2017 / Guidelines for the clinical, biochemical and imaging diagnosis of acromegaly. Federación Argentina de Sociedades de Endocrinología (FASEN) - 2017

RESUMEN Objetivo El objetivo de esta guía es formular pautas para el diagnóstico de acromegalia adecuadas a los parámetros internacionales y a los recursos disponibles en Argentina. Participantes El grupo de trabajo propuesto por la Federación Argentina de Sociedades de Endocrinología (FASEN) incluyó un equipo multidisciplinario compuesto por 5 médicos endocrinólogos (4 especialistas y una profesional joven), un neurocirujano y una bioquímica, expertos en el tema. Evidencia Esta guía basada en la evidencia se desarrolló utilizando la metodología AGREE para describir tanto las recomendaciones como la calidad de las pruebas. Los borradores de esta guía fueron revisados por un grupo multidisciplinario de especialistas reconocidos en acromegalia. Conclusiones Utilizando un enfoque basado en la evidencia, esta guía aborda la evaluación diagnóstica de la acromegalia en Argentina.

ABSTRACT Objective The aim is to formulate guidelines for the clinical, biochemical and imaging diagnosis of acromegaly in accordance with international criteria and resources available in Argentina. Participants The task force selected by FASEN included a multidisciplinary team of 5 endocrinologists (4 senior and 1 junior), a neurosurgeon and a biochemist, experts in the field. Evidence This evidence-based guidelines were developed using the AGREE methodology to describe both the recommendations and the quality of evidence. The draft of these guidelines was reviewed by endocrinologists, biochemists and neurosurgeons experts in the field. Conclusions Using an approach based on evidence, these guidelines address the diagnosis of acromegaly in Argentina.

Acromegalia: diagnóstico y tratamiento / Acromegaly: diagnosis and treatment

La acromegalia es una enfermedad crónica multisistémica, de baja prevalencia, cuyo diagnóstico y tratamiento deben adecuarse a las realidades actuales. No obstante, continúa siendo una enfermedad subdiagnosticada, que evoluciona con una elevada tasa de mortalidad, generalmente por causas cardiovasculares y cerebrovasculares, lo cual reduce la esperanza de vida de la persona que la padece. En el presente artículo se describen las formas de presentación del hipersomatotropismo, los métodos de diagnóstico y las modalidades terapéuticas, que incluyen la quirúrgica, la farmacológica y la radioterapia.

Acromegaly is a multisystem chronic disease, of low prevalence which diagnosis and treatment should be adapted to the current realities. Nevertheless, it continues being an underdiagnosed disease with a clinical course of high mortality rate, generally due to cardiovascular and cerebrovascular causes, which reduce the life expectancy of the person suffering it. In this work, the forms of presentation of hypersomatotropism, the methods of diagnosis and the therapeutic modalities are described, that include the surgical one, the pharmacological one and the radiotherapy.