Influenza is a viral infection that mainly affects the respiratory tract from the most proximal to the most distal portion, it is characterized by lasting about 7 days and by having a variable clinical picture. This infectious disease is positioned as one of the most relevant causes of hospitalization in the child population associated with possible complications that can be fatal, generally the treatment is symptomatic but in special cases antivirals are used, in the pediatric population oseltamivir is the indicated drug.

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The diabetic foot is defined as the ulceration and destruction of the deep tissues of the foot due to the suffering of diabetes mellitus, which is a disease of great prevalence and importance today, due to its high rates in the world, therefore, it is necessary that measures be implemented as a treatment of it, that meet various conditions such as reduced wound volume, rapid healing and granulation of new tissue. In recent years, the use of negative pressure systems has been implemented, which, compared to other treatments, has yielded gratifying results, which is why in the following review article, the current literature on this technique is analyzed, to evaluate its effectiveness in this type of injury.

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Tracheal stenosis, consisting of the narrowing of the caliber and the tracheal lumen due to the formation of fibrous tissue, caused by damage to the mucosa and cartilage, is one of the most frequent complications and the reason for admission to the emergency department in Post-intubated patients during the course of the disease produced by covid 19, due to the suffocation conditions presented by them. In this way, the direct association between tracheal stenosis and orotracheal intubation and mechanical ventilation is analyzed, in order to know its structural and functional consequences; and in turn know the possible preventive measures.