Accidentul coronarian – sau infarctul miocardic – se instaleaza atunci cand o parte din muschiul cardiac nu mai este deloc hranita cu sange, iar celulele din tesutul respectiv se necrozeaza. De regula, atacul ischemic se produce atunci cand artera e blocata de o placa de ateroscleroza desprinsa de pe peretele vasului. Aceasta placa este formata din colesterol, leucocite, calciu si alte componente inconjurate de tesut fibros.
Infarctul apare de regula pe neasteptate si se manifesta prin durere sau o senzatie de apasare puternica in piept, insotita de transpiratie, greata, accelerarea respiratiei, iradierea durerii in umar, gat, bratul stang, ritm neregulat al inimii, pierderea cunostintei. Durerea este persistenta si necesita tratament de urgenta si supraveghere medicala.
Din ce in ce mai multe scoli medicale prestigioase din lume elaboreaza teste care pot evalua cu precizie riscurile de boli grave in urmatorii 10 ani, pornind de la informatii simple, legate de stilul de viata si anumite valori masurate in sange. Testele se bazeaza pe studierea in timp a indivizilor care renunta foarte greu la anumite tabieturi (fumatul, consumul de grasimi, carne de porc etc.), chiar in ciuda constientizarii riscurilor mari pe care le presupun acestea.
De exemplu, evaluarea colectivului Framingham se bazeaza pe studii efectuate pe o perioada de peste 50 de ani si iau in considerare:
VARSTA. Riscul creste cu varsta, fiind mai mare la barbatii de peste 45 de ani si la femeile de peste 55 de ani. (1 punct)
SEXUL. Barbatii sunt mai predispusi accidentului coronarian, iar femeile dupa instalarea menopauzei. (1 punct daca va incadrati la aceste categorii)
FUMATUL. Nu conteaza cat sau de cand fumati. Daca aveti acest obicei, adaugati 1 punct.
TENSIUNEA ARTERIALA MARE – peste 120 mmcolHg (1 punct).
MEDICATIA ANTIHIPERTENSIVA. Administrarea de diuretice, blocante ale canalelor de calciu, betablocante, inhibitori ai enzimei de conversie a angiotensinei, blocanti ai angiotensinei II etc. creste riscul de accident coronarian (1 punct daca luati vreunul dintre medicamentele antihipertensivei).
COLESTEROLUL BUN HDL. Valorile mari sunt cele salvatoare, riscul aparand la valori mai mici de 40mg/ dL (daca aveti valori mici, mai adaugati 1 punct).
COLESTEROLUL TOTAL. Cu cat este mai mare, cu atat este mai mare si riscul coronarian. Adaugati un punct daca aveti colesterol total peste 240 mg/dL. Valorile ideale sunt sub 200 mg/dL.
Un punctaj total de peste 5 indica un risc foarte mare de accident coronarian. Daca la acesta se adauga greutate in exces sau alte boli asociate, cum ar fi diabetul, este momentul sa va internati intr-o clinica de cardiologie pentru investigatii serioase si o medicatie preventiva. De asemenea, este momentul sa va schimbati radical modul de viata: sa slabiti, sa renuntati la fumat, la alcool, la consumul de grasimi de origine animala.
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