[Comparison between two diagnostic tests for preterm rupture of membrane].
BACKGROUND
Rupture premature of membranes occurs in 8% of all births constituting one of main causes of prematurity.


OBJECTIVE
Determine qualitatively the presence of human chorionic gonadotropin hormone in vagina and used as diagnostic test to rupture of membranes.


METHODS
We performed a study of diagnostic test observational, transverse, comparative, prospective, not blind type; in 175 healthy pregnant woman with 20 to 42 weeks of gestation, with suspicion of vaginal liquid outlet, at the Obstetrics Department Academic Hospital "Dr Jose Eleuterio Gonzalez" during the period of April 2009 to June 2011, crystallography and vaginal human chorionic gonadotropin hormone test were performed.


RESULTS
We analyzed 175 patients, average age was 22.35 years old, was obtained sensibility and specificity of 98.90% y 77.38% to crystallography and 93.41% y 73.81% to vaginal human chorionic gonadotropin hormone test, with value positive predictive of 79.44% and value negative predictive of 91.18% for this last.


CONCLUSIONS
Determine qualitatively the presence of human chorionic gonadotropin hormone in vagina is a diagnostic test useful for detecting premature rupture of membranes has been shown to be as effective as crystallography.
Hospital Universitario Dr. José Eleuterio González, Universidad Autónoma de Nuevo León, Monterrey, NL, México. jenny_judyth@hotmail.com
Jenny Judith
JJ
Ramírez Martínez
Juan Antonio
JA
Soria López
Roberto
R
Ambriz López
José Luis
JL
Iglesias Benavides
D000293:Adolescent; D000328:Adult; D000653:Amniotic Fluid / Q000737:chemistry*; D001826:Body Fluids / Q000737:chemistry; D006063:Chorionic Gonadotropin / Q000032:analysis*; D004630:Emergencies; D005260:Female; D005322:Premature Rupture of Fetal Membranes / Q000175:diagnosis*; D005865:Gestational Age; D006785:Hospitals, University / Q000706:statistics & numerical data; D006801:Humans; D011237:Predictive Value of Tests; D011247:Pregnancy; D012680:Sensitivity and Specificity; D014621:Vagina / Q000378:metabolism*; D014626:Vaginal Smears; D055815:Young Adult
D006063:Chorionic Gonadotropin