Since the onset of the SARS-CoV-2 pandemic, the pediatric population has been less affected by the disease both in frequency and severity. However, since April cases of variable presentation and severity characterized by inflammatory phenomena that affect multiple organs have been reported, a condition called Multisystem Inflammatory Syndrome in Children (MIS-C). The literature has reported frequent cardiac involvement, up to 80%. This is characterized by myocardial injury with a significant increase of biomarkers such as serum troponins I and T, BNP, or NT-ProBNP coupled with varying degrees of ventricular dysfunction, pericarditis, valvulitis, and arrhythmias. Coronary compromise has also been described, which can occur in up to 23% of cases, and ranges from dila tations to aneurysms. Inpatient and outpatient cardiology follow-up has been systematized based on the clinical phenotypes such as myocardial injury (myocarditis, valvulitis, pericarditis), shock (usua lly vasoplegic), Kawasaki disease-type manifestations, and those MIS-C that do not comply with the clinic of the previous three. This last group represents the main challenge in the short-, medium- and long-term follow-up, therefore, it is necessary a multidisciplinary team for managing these patients. Considering the high frequency of cardiac compromise in MIS-C, and the importance of reaching a consensus regarding its management and follow-up, we present these recommendations according to the current state of knowledge regarding this recently described pathology.

Stridor is an abnormal respiratory sound caused by obstruction or collapse of the laryngotracheal airway, either acutely or chronically. There are different causes, both congenital and acquired, that can produce shortness of breath which may be severe and potentially life-threatening. The clini cal diagnosis must be complemented with an endoscopic airway assessment and sometimes with imaging, to try to determine the areas involved and possible associated malformations. Treatment should be individualized, considering the patient's overall condition, stridor etiology, its impact on breathing and swallowing, prognosis, and technical capacity of the managing team, among others. Alternatives may include observation, non-pharmacological measures, local or systemic medications, endoscopic and open surgeries, or a temporary or long-term tracheostomy. A thorough understan ding of the pathophysiology and etiopathogenesis of persistent pediatric stridor is essential for the correct management of these complex patients, ideally in a multidisciplinary manner.

Craniosynostosis is defined as the premature fusion of one or more skull sutures, characterized by an abnormal shape of the head. It is a rare condition but should be recognized and timely referred to Neurosurgery in order to prevent complications. The objective of this review is to describe the most frequent clinical and genetic characteristics of this pathology, its classification according to the shape of the skull, and the most characteristic signs to achieve timely recognition. A search for scientific articles in Pubmed, Scielo, and EMBASE databases was performed using the terms craniosynostosis, plagiocephaly, scaphocephaly, and brachycephaly. We selected articles in Spanish and English that described the characteristics of the pathology and about its management, choosing systematic reviews or recommendations from scientific societies when available. Craniosynostosis may occur in isola tion or associated with other deformities. Its classification depends on the affected suture(s), leading to the characteristic shape of the skull and the presence of other malformations. This condition is usually diagnosed and referred late, which is associated with complications such as intracranial hy pertension and impaired brain development. Early surgery has less comorbidity and better esthetic results. In conclusion, the abnormal shape of the skull must raise the suspicion of craniosynostosis, even if it occurs in isolation. Surgical management before one year of life is associated with a better prognosis.