Asunto(s)
Tumor Glómico/complicaciones , Neoplasias Gástricas/complicaciones , Adulto , Urgencias Médicas , Femenino , Hemorragia Gastrointestinal/etiología , Hemorragia Gastrointestinal/patología , Hemorragia Gastrointestinal/cirugía , Tumor Glómico/patología , Tumor Glómico/cirugía , Humanos , Neoplasias Gástricas/patología , Neoplasias Gástricas/cirugía , Rotura Gástrica/etiología , Rotura Gástrica/patología , Rotura Gástrica/cirugíaRESUMEN
The toxicological study was performed in order to establish the optimum carbon thromboresistant coat of titanium in creating new constructions of the artificial heart valves under conditions of chronic experiments in albino rats. Fine samples of carbon coats made by different techniques were studied. The biological activity of only one coat made by the method of ionoplasmic spraying with using chemically pure carbon target was established.
Asunto(s)
Compuestos Inorgánicos de Carbono , Carbono/toxicidad , Prótesis Valvulares Cardíacas/normas , Modelos Cardiovasculares , Compuestos de Silicona , Silicio/toxicidad , Titanio/toxicidad , Animales , Masculino , Ratas , Ratas Endogámicas , Seguridad , Propiedades de SuperficieRESUMEN
The main characteristics of systemic hemodynamics and relative changes in the blood content, blood flow and uptake of intravenous 86Rb in several tens of organs, tissues and parts of the body were examined in rat experiments 6 days after ligation of the common bile duct. This made it possible to appraise the resistive, capacitance and capillary constituents of the general peripheral vascular resistance. In this case the fractions of cardiac discharge diminished in a number of the internal organs of the abdomen and increased in muscle and bone tissues of the chest. The signs of extensive venodilation were defined, with these signs being the least remarkable in the liver and lungs. Transcapillary permeability for 86Rb substantially increased in the organs of the splanchic area and in the lungs.