Praeityje naudoti mioglobinas, kreatinkinazė ir kreatinkinazė-MB, tačiau šie žymenys aptinkami pavėluotai, jau prasidėjus miokardo ląstelių nekrozei arba jiems trūko specifiškumo, todėl šiuo metu auksinis standartas ŪKS diagnostikoje yra troponino tyrimas dinamikoje, derinant su klinikiniais ir instrumentiniais radiniais (3). Biožymenys reikšmingai pakeitė ŪKS diagnostiką. Likusiems diagnozuojamos nekardiologinės ligos, tokios kaip skeleto raumenų ligos, gastroezofaginės, pulmonologinės ar psichiatrinės ligos. šių pacientų galiausiai diagnozuojamas ūminis miokardo infarktas (1). Krūtinės skausmas yra vienas dažniausių skundų priėmimo – skubios pagalbos skyriuje. Conclusions: The study data confirmed the hypothesis that morphological changes in the cortical layer at the mandibular base were found among young and middle aged individuals with normal skeletal bone status and were significantly associated with subject’s age, gender, and other factors such as cigarette smoking, diseases having an influence on bone metabolism, used medicines. There was a significant relationship between mandibular cortical index and subject’s age (F=4.54 df=2 p=0.01), gender (χ2=16.22 df=2 p<0.01), thyroid diseases (p=0.05), hormonal preparation use (p<0.01), cigarette smoking (p<0.01). Analysis was carried out by mentioned factors. According to the classification by Klemetti, subjects were divided into 3 index morphological groups: C1, C2, and C3. Skeletal bone status was examined according One – Minute test, panoramic radiography was performed, and panoramic radiographic images were analyzed to determine the mandibular cortical index. A questionnaire was used to collect data on subjects’ age, gender, sociodemographic status, diseases, and used medicines, harmful habits. The study included 216 randomly selected subjects aged 19 to 50 years. The aim of this study was morphological analysis of the cortical layer in the mandibular base distally from the mental foramen for determination of the mandibular cortical index in the Lithuanian young and middle-aged individuals according to gender, age, general health status, used medicine.

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