The addition of silver and nickel increases the contraceptive effectiveness of copper IUDs. A clinical study was presented in 672 women with 6.982 months-use. Pregnancy rates were 0.0% at 12 months of use in 245 women with devices containing Cu + Ag and Cu + Ni. Copper only, pregnancy were 1.5% and with the same metal IUDs, 4.4%. 200 control women with Lippes C and D group showed 2.5% of pregnancies. Incidences of bleeding and first expulsions were about twice that Lippes, probably due to the design of the device rather than metals. There were no significant differences in subsequent expulsions and occurrence of pain and vaginal discharge. The feasibility of using pairs Cu + Ag and Cu + Ni in a model more appropriate IUD is discussed. Postcoital test sperm by recovery in 76 patients has demonstrated an almost complete absence of sperm in the uterine cavity in the presence of metallic IUD...

The authors have studied the contraceptive effect of 17-Alpha Hydroxi-19-Norprogesterona Capronate (SN - 582) in 21 normal women; the effect is present during 6-8 weeks after the inyection of 200 mg. During this time menstrual irregularities as spotting and amenorrhea were observed, but their incidence was lower than those produced by the norethisterone enanthate (SN - 393).

The addition of silver and nickel increases the contraceptive effectiveness of copper IUDs. A clinical study was presented in 672 women with 6.982 months-use. Pregnancy rates were 0.0% at 12 months of use in 245 women with devices containing Cu + Ag and Cu + Ni. Copper only, pregnancy were 1.5% and with the same metal IUDs, 4.4%. 200 control women with Lippes C and D group showed 2.5% of pregnancies. Incidences of bleeding and first expulsions were about twice that Lippes, probably due to the design of the device rather than metals. There were no significant differences in subsequent expulsions and occurrence of pain and vaginal discharge. The feasibility of using pairs Cu + Ag and Cu + Ni in a model more appropriate IUD is discussed. Postcoital test sperm by recovery in 76 patients has demonstrated an almost complete absence of sperm in the uterine cavity in the presence of metallic IUD...

La presente investigación tuvo como propósito determinar la relación que existe entre la calidad de servicios y la lealtad de los clientes de una empresa de telecomunicaciones, San Juan de Lurigancho. De igual manera, fue un estudio de tipo aplicada, con diseño no experimental, además ostentó un enfoque cuantitativo, así como un nivel descriptivo correlacional. Se utilizó una muestra censal de 100 clientes en estudio. La recolección de datos se utilizó dos cuestionarios conformado por 53 preguntas, con escala de Likert. La información fue recolectada y procesada mediante el programa estadísticos SPSS versión 26. Finalmente se realizó la prueba de hipótesis, en el cual se pudo determinar que existe relación positiva muy fuerte entre la calidad de servicios y lealtad del cliente según el coeficiente de correlación Spearman (Rho = 0.401) y el Sig. (bilateral) = 0.000. Así...