Examinando por Autor "Márquez Guzmán, Christian Jesús"

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Eficacia del antígeno prostático específico y la fosfatasa ácida en la detección de fluido seminal en prendas de vestir pertenecientes a mujeres víctimas de violación sexual en la División Médico Legal II Lima - norte, año 2017 – 2018
(Universidad Privada Norbert Wiener, 2019-11-16) Márquez Guzmán, Christian Jesús; Quiroz Mejía, Jesús Miguel
An investigation was carried out using the prostate specific antigen (PSA) and acid phosphatase (FA) test, with the aim of determining its effectiveness in relation to the detection of seminal fluid in clothing, also the search for sperm was performed by microscopic observation (MC) as a confirmatory test for the detection of this type of fluid; 129 clothing items such as tricks, pants and shorts, belonging to women victims of rape were analyzed according to legal medical examination. The reliable presence of seminal fluid was detected in 90 garments (70%) checked by the positive results to the MC; seminal components such as: PSA in 94 garments (73%), FA in 88 garments (65%); in 39 samples (30%) the presence of seminal fluid was not detected; the integral analysis of the data obtained revealed 4 types of associations of results with variations of positivity and negativity of the tests, being 82 (64%) the I (PSA +, FA +, MC +), 2 (1.5%) the II (PSA +, FA -, MC -), 8 (6%) the III (PSA +, FA -, MC +) and 2 (1.5%) the IV (PSA +, FA+, MC -). The statistical analysis applied to the results reflected a well-marked positive correlation in relation to the results obtained by the PSA and MC association with a statistical value p0.05 and a Spearman correlation index (rho) of 0.9270 closer to 1, in comparison to the one obtained by the FA and MC test that showed a value (rho) of 0.8286, statistically determining a greater association and interdependence relationship between the results of the PSA and MC tests; 100% efficacy was also determined in terms of the detection of seminal fluid in garments by using the PSA test in relation to 91% effectiveness of the FA test, corroborated by the positive microscopy results.