Introduction: Due to growing evidence suggesting COVID-19 may have a benign course in the newborn, a number of guidelines supporting rooming-in and breastfeeding were developed. The main aim of the study was to assess the safety of this approach, through the risk of developing severe neonatal infection.Material and Methods: Prospective observational study from April 2020 to February 2021 on the approach and neonatal follow-up of infants born to mothers with COVID-19 at the time of delivery in a hospital with advanced neonatal care, where rooming in and breastfeeding were promoted whenever possible. We collected data during hospital admission and over the phone during the neonatal period.Results: We included 77 infants born to mothers with COVID-19 (3.8% of newborns born during the time of study), median gestational age 39 weeks + 5 days and median birth weight 3270 g; 9% were born premature (versus 12% born premature among newborns born during the time of study). Rooming-in took place in all of them although 4% were briefly admitted to the Neonatal Intensive Care Unit; 88% were discharged home up to day three, 97% were breastfed at the time of discharge and 90% were still breastfed by the end of the neonatal period. We completed neonatal follow-up of 63 newborns, eight of them developed COVID-associated symptoms, three with need of medical evaluation; 40% had no medical assessment after being discharged. Out of 77, 5% of infants were infected with SARS-CoV-2 (total of four, one mild, three asymptomatic), with no significant differences during hospital stay or follow-up.Discussion: Neonatal infection was uncommon and mild, and there was no increase in prematurity. Rooming-in and breastfeeding were safe and should be promoted whenever clinically possible. Follow-up care after hospital discharge needs improvement.Conclusion: Infants born to mothers with COVID-19 were safely roomed in with their mothers and exclusively breastfed.

Atrioventricular block can occur in normal children, young adults or athletes. It is also associated with underlying heart disease or occurs as a drug adverse effect. Amphotericin B is used in the treatment of invasive fungal infections. Cardiac toxicity is a rare adverse reaction. We report the case of a 9-month girl, admitted in the paediatric intensive care unit with cytomegalovirus pneumonitis. During hospitalisation the patient developed a systemic fungic infection and was medicated with liposomal amphotericin B. On the third day of treatment she began repeated episodes of bradycardia with spontaneous reversion. The investigation revealed a second-degree atrioventricular block. We excluded the misplacement of the central catheter, myocarditis or structural cardiomyopathy and suspended amphotericin. After 8 days, the bradycardia episodes ceased what was consistent with the drug's half-life. Amphotericin cardiotoxic mechanism is still unclear. It may be related with alteration of myocardial membrane depolarisation.

Hypertension is recognized as one of the major contributing factors to cardiovascular disease, but its etiology remains incompletely understood. Known genetic and environmental influences can only explain a small part of the variability in cardiovascular disease risk. The missing heritability is currently one of the most important challenges in blood pressure and hypertension genetics. Recently, some promising approaches have emerged that move beyond the DNA sequence and focus on identification of blood pressure genes regulated by epigenetic mechanisms such as DNA methylation, histone modification and microRNAs. This review summarizes information on gene-environmental interactions that lead toward the developmental programming of hypertension with specific reference to epigenetics and provides pediatricians and pediatric cardiologists with a more complete understanding of its pathogenesis.

SUMMARYJuvenile dermatomyositis ( JDM) is a rare autoimmune disease, characterised by a systemic capillary vasculopathy that typically affects skin and muscle. Gastrointestinal involvement is relatively rare. We report the case of an 11-year-old girl admitted for investigation of skin rash, progressive symmetric proximal muscle weakness, dysphagia and weight loss. The diagnosis of JDM was confirmed and during hospitalisation the patient developed abrupt and intense right hypocondrium pain associated with nausea and vomiting. Abdominal ultrasound revealed a thick gallbladder wall (8 mm) with pericholecystic fluid and no evidence of gallstones. An acute acalculous cholecystitis was assumed and the patient was started on intravenous fluids, prednisolone and analgaesic therapy. Clinical resolution was verified after 48 h. We hypothesised that the vasculitic process of JDM could have been the basis for this complication as described in other autoimmune diseases. BACKGROUND

Infectious complications represent an important cause of morbidity and death in patients with transplant. Parasitic infections are less frequent than viral and bacterial agents, and are often overlooked. We describe the case of a 13-year-old adolescent, born in São Tomé Island, who was under immunosuppressive therapy after a cardiac transplant. The patient had an intermittent course of diarrhoea, abdominal pain and vomiting. She was admitted dehydrated, and Strongyloides stercoralis, Schistosoma intercalatum and Cystoisospora belli were isolated in her stools. The patient was treated with ivermectin, albendazole, praziquantel and ciprofloxacin with clinical and microbiological resolution. Her immunosuppressive therapy was reduced during hospitalisation. We believe that the parasitic infection was a result of a recrudescence of dormant infections acquired in her homeland. To the best of our knowledge, there are no reports of cystoisosporiasis or schistosomiasis in heart transplant recipients.