Examinando por Autor "Pérez Alvarez, Ruth Antonia Jenyfer"

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    Efficacy of levonorgestrel as an emergency oral contraceptive
    (Universidad Privada Norbert Wiener, 1905-07-09) Chávez Andrade, Maribel; Pérez Alvarez, Ruth Antonia Jenyfer; Calsin Pacompia, Wilmer
    Objective: Analyze and systematize the effectiveness of levonorgestrel as an emergency oral contraceptive. Materials and Methods: Systematic review of 10 national and international research articles that had as their main topic the effectiveness of levonorgestrel as an emergency oral contraceptive. Of all the articles that were found, the most important ones were included according to level of evidence and the least relevant ones were excluded, where they were subjected to a critical reading. Results: 70% of the articles demonstrate that levonorgestrel is effective as an emergency oral contraceptive in preventing pregnancy and agree that levonorgestrel is effective within 72 hours to prevent pregnancy. Because it is an emergency and not a regular method of contraception, it is recommended to use it only 2 times a year. Conclusions: Levonorgestrel is effective as an emergency oral contraceptive in preventing pregnancy.