Management of a patient with dengue virus infection and tetralogy of Fallot

TOF belongs to cyanotic heart disease group, which has polycythemia and a high baseline hematocrit. A heart defect that features four problems:a hole between the lower chambers of the heart, an obstruction from the heart to the lungs, the aorta lies over the hole in the lower chambers, the muscle surrounding the lower right chamber becomes overly thickened. Dengue viral infection in patients with TOF would have a greater potential for the occurrence of heart failure because the baseline of hematocrit is already higher compare with non-congenital heart disease. A 22-year-old man complains offever and nausea since three days before hospitalized. The principal treatment is enough rest and rehydration to achieve normal range of hematocrit (around 65%) and to avoid drugs that may precipitate bleeding (like salicylic acid).In the management of this patient, we should be more careful because there wascomorbid with TOF. The focus of the management is to prevent dehydration during the critical phase and aware of overhydration in the recovery phase.