Study of 52 Pediatric Patients Who Required 78 Hospital Admissions for Cerebral Venous Sinus Thrombosis from 2013 to 2020 Using Data from the Polish National Health Fund Registry

BACKGROUND Cerebral venous sinus thrombosis (CVST) in children is a rare disease with a complex, multifactorial etiopathogenesis. The Polish National Health Fund (NHF) Registry [Narodowy Fundusz Zdrowia (NFZ)], contains health insurance data from all 16 national provinces, or voivodeships. This study used data from the Polish NHF Registry to evaluate 52 pediatric patients who required 78 hospital admissions for CVST from 2013 to 2020. MATERIAL AND METHODS The data in the Polish NHF Registry were acquired based on the disease code I67.6 from the International Classification of Diseases, Tenth Revision (ICD-10), and the patients' age (up to 18 years old). RESULTS We identified 78 hospitalizations of 52 pediatric patients due to CVST in Poland from 2013 to 2020 (63.5% boys and 36.5% girls, mean age 9.7±5.8 years old). The mean duration of hospitalization was 10.5±11.7 days, the mean cost of hospitalization was 3273±2191 Polish zloty (PLN). The most common age subgroup was adolescents (27%). Ten percent of patients were hospitalized in a region other than their region of residence. The duration and cost of hospitalization were positively correlated with each other (r=0.512, P<0.001). The most common type of admission was an emergency (51%), and the most common discharge was referral for further outpatient treatment (50%). CONCLUSIONS Polish registry data showed that from 2013 to 2020, CVST was more commonly diagnosed in male adolescents from 15 to 18 years of age who presented as emergency hospital admissions. There were regional differences in incidence and duration of hospital stay and healthcare costs between patients.