Toxiinfectiile alimentare sunt boli acute, care apar izolat sau epidemic, in urma consumului de alimente contaminate cu variate bacterii sau cu toxinele acestora. Simptomele clasice sunt de gastroenterocolita acuta, cu debut brutal si fenomene toxice generale. Microorganismele cele mai vinovate sunt din genurile Salmonella, Shigella si stafilococi. Alimentele cele mai frecvent contaminate sunt carnea si produsele din carne, inclusiv conserve, pestele, laptele si produsele lactate (frisca, smantana, branza, iaurt), ouale. Dintre preparatele culinare, sunt de nominalizat inghetata, prajiturile, cremele, maioneza, tocaturile. In functie de agresivitatea microbului, de varsta, dar si de cantitatea inghitita, tulburarile digestive apar dupa 6-36 de ore de la consumarea alimentului contaminat. Varsaturile si diareea sunt cele mai comune manifestari, ele ducand la o pierdere masiva de apa si minerale si, in consecinta, la deshidratare. Pierderile importante de calciu, sodiu, potasiu se manifesta prin astenie marcata, slabiciune musculara, hipotensiune, ajungandu-se, la persoanele suferinde si de alte afectiuni, la complicatii cardiace, renale si/sau neurologice. Diagnosticul se pune relativ usor, pe baza semnelor clinice si a faptelor relatate de bolnav. Pentru identificarea germenului, este necesara analiza bacteriologica: culturi din alimentele incriminate si din lichidul de varsatura.
Tratamentul toxiinfectiilor trebuie individualizat in functie de forma clinica. In cazul formelor usoare si medii, se recomanda: repaus, dieta usoara („de crutare”: ceaiuri neindulcite, supe clare, branza de vaci, orez, sticks) si medicamente simptomatice: Emetiral pentru greata, Scobutil pentru colici, antidiareice usoare: Saprosan, Smecta. In general, antibioticele nu sunt recomandate. Formele severe se trateaza obligatoriu in spital.
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