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Role of Haemophilus influenzae in intra-amniotic infection in patients with preterm rupture of membranes.
Martínez MA, Ovalle A, Ulloa MT, Vidal RM. Martínez MA, et al. Among authors: ovalle a. Eur J Clin Microbiol Infect Dis. 1999 Dec;18(12):890-2. doi: 10.1007/s100960050425. Eur J Clin Microbiol Infect Dis. 1999. PMID: 10691201
[Premature membrane rupture].
Oyarzún E, Germain A, Lira F, Ovalle A, Bernier L. Oyarzún E, et al. Among authors: ovalle a. Rev Chil Obstet Ginecol. 1994;59(3):165-76. Rev Chil Obstet Ginecol. 1994. PMID: 7659807 Spanish. No abstract available.
[Genital microbial flora in a population of high obstetrical risk].
Villagra CE, Martínez MA, Ovalle A. Villagra CE, et al. Among authors: ovalle a. Rev Chil Obstet Ginecol. 1994;59(1):32-8. Rev Chil Obstet Ginecol. 1994. PMID: 7809430 Spanish.
There was a significant higher incidence of lactobacilli in patients with balanced healthy vaginal flora, whereas Gardnerella vaginalis and Mycoplasma hominis were isolated significantly more frequently from women with bacterial vaginosis. With the exception of genital myc …
There was a significant higher incidence of lactobacilli in patients with balanced healthy vaginal flora, whereas Gardnerella vaginal …
[Placental histopathology in premature rupture of membranes. Its relationship with microbiological findings, maternal, and neonatal outcome].
Ovalle A, Martínez MA, Kakarieka E, Gómez R, Torres J, Fuentes A, Ruiz M, Angel R. Ovalle A, et al. Rev Med Chil. 1998 Aug;126(8):930-42. Rev Med Chil. 1998. PMID: 9830745 Spanish.
To establish a relationship between pathological findings, amniotic fluid and lower genital tract microbiological studies, maternal and neonatal outcome. ...Newborns with acute funisitis had a higher frequency of neonatal death (29%), severe asphyxia (42%) and neona …
To establish a relationship between pathological findings, amniotic fluid and lower genital tract microbiological studies, maternal a …
Urinary tract infections in pregnancy.
Ovalle A, Levancini M. Ovalle A, et al. Curr Opin Urol. 2001 Jan;11(1):55-9. doi: 10.1097/00042307-200101000-00008. Curr Opin Urol. 2001. PMID: 11148747 Review.
Evidence suggests that infection plays a role in the pathogenesis of preterm labour. Experimental models in pregnant mice support the theory that Escherichia coli propagated by the transplacental route, involving bacterial adhesins, induces preterm delivery, but this has n …
Evidence suggests that infection plays a role in the pathogenesis of preterm labour. Experimental models in pregnant mice support the …
[Premature labor with intact membranes: microbiology of the amniotic fluid and lower genital tract and its relation with maternal and neonatal outcome].
Ovalle A, Martínez MA, Gómez R, Sáez J, Menares I, Aspillaga C, Schwarze JE. Ovalle A, et al. Rev Med Chil. 2000 Sep;128(9):985-95. Rev Med Chil. 2000. PMID: 11349503 Spanish.

Compared to patients without infection, women with microbial invasion of amniotic cavity had a higher rate of prematurity (73.3% p < 0.05), a higher rate of prematurity of less than 34 weeks (60% p < 0.01), a higher frequency of preterm rupture of membr

Compared to patients without infection, women with microbial invasion of amniotic cavity had a higher rate of prematurity (73.3% p &l …
Occurrence and antimicrobial susceptibility of Ureaplasma parvum (Ureaplasma urealyticum biovar 1) and Ureaplasma urealyticum (Ureaplasma urealyticum biovar 2) from patients with adverse pregnancy outcomes and normal pregnant women.
Martínez MA, Ovalle A, Santa-Cruz A, Barrera B, Vidal R, Aguirre R. Martínez MA, et al. Among authors: ovalle a. Scand J Infect Dis. 2001;33(8):604-10. doi: 10.1080/00365540110026782. Scand J Infect Dis. 2001. PMID: 11525356
A recent phylogenetic analysis of Ureaplasma urealyticum resulted in the proposal to divide their 2 biovars into species. We used PCR to compare the distribution of species and the presence of the tet(M) and int-Tn resistance determinants in 63 strains of Ureaplasma spp. i
A recent phylogenetic analysis of Ureaplasma urealyticum resulted in the proposal to divide their 2 biovars into species. We used PCR
Antibiotic administration in patients with preterm premature rupture of membranes reduces the rate of histological chorioamnionitis: a prospective, randomized, controlled study.
Ovalle A, Martínez MA, Kakarieka E, Gómez R, Rubio R, Valderrama O, Leyton H. Ovalle A, et al. J Matern Fetal Neonatal Med. 2002 Jul;12(1):35-41. doi: 10.1080/jmf.12.1.35.41. J Matern Fetal Neonatal Med. 2002. PMID: 12422907 Clinical Trial.
Microbial invasion of the amniotic cavity was defined as the presence of a positive amniotic fluid culture obtained by transabdominal amniocentesis. Cervicovaginal infection was diagnosed when bacterial vaginosis or a positive culture for cervicovaginal pathogens or …
Microbial invasion of the amniotic cavity was defined as the presence of a positive amniotic fluid culture obtained by transabdominal …
[Human immunodeficiency virus infection in pregnant women. The importance of recognizing the infection during pregnancy and risk factors for perinatal transmission].
Ovalle A, Vizueta E, Casals A, Northland R, González R, Labbe E. Ovalle A, et al. Rev Med Chil. 2003 Jun;131(6):633-40. Rev Med Chil. 2003. PMID: 12942591 Spanish.
Risk factors increasing HIV perinatal infection are: breast feeding, lack of ART, vaginal delivery, premature rupture of membranes, rupture of membranes > 4 h and premature labor without a clinical cause....
Risk factors increasing HIV perinatal infection are: breast feeding, lack of ART, vaginal delivery, premature rupture of membranes, rupture …
[Serotypes and antimicrobial susceptibility of Streptococcus agalactiae].
Martínez MA, Ovalle A, Durán C, Reid I, Urriola G, Garay B, Cifuentes M. Martínez MA, et al. Among authors: ovalle a. Rev Med Chil. 2004 May;132(5):549-55. doi: 10.4067/s0034-98872004000500003. Rev Med Chil. 2004. PMID: 15279140 Spanish.
The strains had a constitutive macrolide-lincosamide-streptogramin (cMLSB) resistance phenotype and the erm(A) gene was present in the four isolates. ...The cMLSB resistance phenotype, and the erm(A) gene was detected in resistant strains....
The strains had a constitutive macrolide-lincosamide-streptogramin (cMLSB) resistance phenotype and the erm(A) gene was presen …
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