Hematologic parameters and biomarkers predictors of severity in Multisystem Inflammatory Syndrome in children associated with SARS-CoV-2. / Parámetros hematológicos y biomarcadores predictores de gravedad en Síndrome Inflamatorio Pediátrico Multisistémico asociado a SARS-CoV-2.

INTRODUCTION: The multisystem inflammatory syndrome in children associated with SARS-CoV-2 (MIS-C) is cha racterized by a hyperinflammatory state resulting from a cytokine storm, evidenced by alterations in laboratory blood testing and acute-phase proteins. OBJECTIVE: to describe the clinical and labora tory characteristics of patients hospitalized due to MIS-C and identify predictive markers of severity. PATIENTS AND METHOD: Retrospective study of 32 patients. The group was divided into critical and non-critical according to clinical presentation and therapy used. Clinical and laboratory aspects were studied, including complete blood count, coagulation tests, and biomarkers. RESULTS: 18/32 were males, with a median age of 6.8 years. The most frequent manifestations were cardiovascular (84.3%), digestive (84%), and mucocutaneous (59%). The group of critical patients included 15 patients, 12 were males with a median age of 8.9 years, and the non-critical group included 17 patients, 6 were males with a median age of 5.4 years. The laboratory parameters at the admission in the global group showed increased C-reactive protein, D-dimer, leukocytes, neutrophils, ferritin, and fibrinogen. In contrast, albumin and blood sodium levels were decreased. At admission, the critical group was cha racterized by presenting thrombocytopenia, hypoalbuminemia, prolonged prothrombin time, and elevated ferritin. At the time of deterioration, there was an intensification of thrombocytopenia, in creased C-reactive protein together with increased neutrophils level. CONCLUSION: The blood count, C-reactive protein, and albuminemia at admission proved to be significantly important in the identi fication of patients at risk of clinical deterioration.

Compromiso cardiovascular en pacientes con síndrome inflamatorio pediátrico multisistémico, asociado a infección por SARS-CoV-2 / Cardiovascular involvement in pediatric patients with SARS-CoV-2 associated to multisystemic inflammatory syndrome

INTRODUCCION: El Síndrome Inflamatorio Pediátrico Multisistémico (PIMS) ha emergido como una nueva enfermedad en niños, secundaria a infección por SARSCoV-2. Se caracteriza por presentar compromiso multiorgánico con parámetros inflamatorios elevados y manifestaciones clínicas graves, siendo el corazón el órgano más severamente comprometido. OBJETIVO: Describir las características clínicas y de laboratorio de 23 pacientes con diagnóstico de PIMS con compromiso cardiovascular hospitalizados en un centro único. MÉTODO: Se efectuó un estudio retrospectivo analizando los hallazgos clínicos y de laboratorio junto a las manifestaciones cardiovasculares que presentaron estos pacientes. RESULTADOS: 23/29 pacientes con PIMS (78%) presentaron manifestaciones digestivas y mucocutáneas. Las manifestaciones cardiovasculares fueron: Síndrome Kawasaki y "Kawasaki like" sin compromiso coronario en 15/23 (65%) y con compromiso coronario en 3 (13%). Shock en 9 pacientes (39%), injuria miocárdica- miocarditis en 8 (35%) y derrame pericárdico en 13 (56%). Trastornos del ritmo cardíaco se observaron en 6 pacientes (26%). La terapia más utilizada fue inmunoglobulina y corticoides. 18 /23 requirieron manejo en unidades de intermedio y/o intensivo. Un 70% de los pacientes se recuperó del compromiso cardiovascular antes del alta. CONCLUSIÓN: El compromiso cardiovascular en PIMS es la complicación más frecuente de esta enfermedad, que se acompaña de manifestaciones inmunológicas y hematológicas graves lo que hace necesario un tratamiento multidisciplinario para un mejor manejo de estos pacientes.

INTRODUCTION: Pediatric Multisystemic Inflammatory Syndrome (PIMS) has emerged as a new disease in children, secondary to SARSCoV-2 infection. It is characterized by multi-organ involvement with elevated inflammatory parameters and severe clinical manifestations, the heart being the organ most severely involved. OBJETIVE: to describe the clinical and laboratory characteristics of 23 patients diagnosed with PIMS with cardiovascular involvement hospitalized in a single center. METHOD: We conducted a retrospective study in which we analyzed the clinical and laboratory findings along with the cardiovascular manifestations presented by these patients. Results: 23/29 patients with PIMS and cardiovascular involvement were selected, 78% had digestive and mucocutaneous manifestations. Cardiovascular manifestations consisted of KawasakiKawasaki like syndrome without coronary involvement in 15/23 (65%) and coronary involvement in 3 (13%). Nine patients developed shock (39%), 8 (35%) myocardial injury in and 13 (56%) pericardial effusion.. Heart rhythm disorders were observed in 6 patients (26%). The main therapy was immunoglobulin and corticosteroids. 18 /23 required management in intermediate and/or intensive care unit. 70% of patients recovered from cardiovascular involvement before discharge. CONCLUSION: Cardiovascular involvement in PIMS is the most frequent complication of this disease, but it is associated with severe immunological and hematological manifestations, which makes necessary a multidisciplinary treatment for a better management

Aneurismas y divertículos cardíacos congénitos: reporte de una serie pediátrica / Congenital cardiac aneurysms and diverticula: a pediatric series

Introduccion: Los aneurismas y divertículos cardíacos congénitos constituyen malformaciones poco frecuentes y generalmente comprometen el ventrículo izquierdo. Pueden presentarse en forma asintomática, causar embolización, arritmia, insuficiencia cardíaca, rotura o muerte súbita. La ecocardiografía Doppler color realiza el diagnóstico y detecta malformaciones asociadas. La terapia puede ser médica o quirúrgica dependiendo de la presentación clínica y de los hallazgos en cada paciente. Método: Estudio retrospectivo de 5 pacientes durante un período de diez años, uno con divertículo, cuatro con aneurismas, en los cuales se analizó sexo, edad, motivo de consulta, sintomatología, hallazgos al examen físico, malformaciones extracardíacas o cardíacas asociadas. La ecocardiografía confirmó el diagnóstico y analizó la localización, efecto sobre la función cardíaca y presencia de complicaciones. Se estudió el tipo de tratamiento elegido como terapia antiplaquetaria, antiarrítmica o quirúrgica, además del seguimiento. Resultados: De un total de 5 pacientes, tres eran hombres, la mediana de edad al diagnóstico fue de 13 meses; dos de diagnóstico antenatal. Soplo cardíaco (3/5) fue el principal hecho que motivó el estudio. La ubicación más frecuente fue en el ventrículo izquierdo y la malformación cardíaca asociada la comunicación interventricular (2 pacientes). La terapia elegida fue médica en todos los pacientes con aspirina y en un caso se agregó atenolol por taquicardia ventricular no sostenida. Ningún paciente falleció. Conclusion: Constituye la primera publicación sobre esta patología en nuestro país; si bien es una serie pequeña, aporta aspectos clínicos, diagnósticos y de seguimiento que ayudan a sospechar esta rara malformación en el paciente pediátrico.

Introduction: Congenital cardiac aneurysms and diverticula are rare cardiac malformations which mainly affects the left ventricle. Clinically, most are asymptomatic or may cause systemic embolization, arrhyth-mia, heart failure, ventricular wall rupture or sudden cardiac death. Doppler echocardiography establishes the diagnosis and can detect associated malformations. Treatment may be medical or surgical, depending on findings. Patients and Methods: Retrospective study of 5 patients followed for ten years. One patient presented with a diverticulum and four with aneurysms. We analyzed sex, age at diagnosis, symptoms, physical examination, and associated cardiac and extracardiac malformations. Echocardiography confirmed the diagnosis and established location, cardiac function, and presence of complications. We analyzed the treatments used: antiplatelet, anti-arrhythmic or surgical therapy, and follow up. Results: Three were males, the median age at diagnosis was 13 months; in two patients the diagnosis was made before birth. Heart murmur in 3 of 5 patients was the main presenting finding. The most frequent location was the left ventricle and the associated cardiac malformation was ventricular septal defect in 2 patients. All patients were treated with aspirin. One patient with non-sustained ventricular tachycardia received ateno-lol. There were no deaths. Conclusion: This is the first report of this disease in our country. Although it is a small series it provides important clinical aspects for the diagnosis, treatment and follow-up that help us suspect this rare malformation in pediatric patients.