The course of a secondary pulmonary hypertension in a child with congenital heart disease and bronchopulmonary dysplasia in anamnesis is retraced in the article using a concrete clinical case. An assessment of echocardiographic and radiologic disease signs at a prolonged follow-up observation of a child with combined cardiorespiratory pathology was conducted. The main therapeutic approaches to this category of patients were covered.

17 children received cardiorespiratory monitoring in order to evaluate spread and dynamics of changes in the primary obstructive sleep apnea syndrome (OSAS) parameters at type II mucopolysaccharidosis. Mild OSAS [apnea/hypopnea index (AHI) – 1.5-5] was diagnosed in 4 patients (23.5%), moderate OSAS (AHI – 5-10) – in 4 patients (23.5%), severe OSAS (AHI>10) – in 2 patients (11.8%). Average AHI at Hunter syndrome was 5.3±6.9/hour. Mild OSAS (AHI – 0.8±0.3/hour) was prevalent in the group of younger children (1-3 years of age); severe OSAS was prevalent in the group of adolescents (AHI – 10.9±9.4/hour); average blood oxygen saturation (SpO2) was 87.5±10.6%, desaturation index – 10.4±13.3/hour. In total, OSAS was observed in 58.8% of children and aggravated in direct proportion to aggravation of the disease course. Thus, cardiorespiratory monitoring is necessary to reveal children with moderate and severe OSAS course with subsequent prevention of life-threatening conditions, which may appear at this syndrome.