[Association between early miscarriage and Chlamydia trachomatis infection in Aguascalientes, Mexico]. / Asociación entre aborto temprano e infección por Chlamydia trachomatis en Aguascalientes, México.

Background: Chlamydia trachomatis infection in women has been strongly associated with early membrane rupture and pre-term labor; however, the evidence linking Chlamydia trachomatis infection and early miscarriage is inconsistent. Objective: To determine if there is an association between Chlamydia trachomatis infection and early abortion in a group of women from Aguascalientes, Mexico. Material and methods: 108 early abortion product samples were analyzed using polymerase chain reaction technique, along with 42 samples that belonged to 42 patients with a normal pregnancy, in order to determine the presence of Chlamydia trachomatis. The strength of association between early abortion and Chlamydia trachomatis infection was measured with odds ratio (OR) and 95% confidence intervals (95% CI). A value of p < 0.05 was considered statistically significant. Results: Chlamydia trachomatis infection was positive in 39 of 150 patients (26%), in 37 of 108 women with early abortion (34%) and in two of 42 of women with uneventful control pregnancies (4.7%) (p = 0.002). We observed a positive association between the risk of early miscarriage and Chlamydia trachomatis infection (OR = 10.42, 95% CI, 2.39 45.54, p = 0.002). Conclusions: We found a higher frequency of Chlamydia trachomatis infection than the one previously reported in our country, and a higher risk of early abortion for Chlamydia trachomatis infection (10.42) in pregnant women, which suggests the necessity of including the molecular study of this pathogen in women in prenatal control.

Introducción: la infección por Chlamydia trachomatis es un factor de riesgo bien establecido en pacientes con ruptura prematura de membranas y parto prematuro; sin embargo, su papel en el riesgo de aborto temprano es incierto. Objetivo: determinar si existe asociación entre la presencia de infección por Chlamydia trachomatis y aborto temprano en un grupo de mujeres de Aguascalientes, México. Material y métodos: se estudiaron muestras de 108 productos de aborto temprano y 42 pacientes con embarazo normal mediante reacción en cadena de la polimerasa de punto final para determinar la presencia de Chlamydia trachomatis. Se evaluó la magnitud de la asociación entre aborto temprano e infección por este microrganismo con razón de momios (RM) e intervalos de confianza al 95% (IC 95%). Un valor de p < 0.05 se consideró significativo. Resultados: se encontró Chlamydia trachomatis en 39 de las 150 pacientes (26%), en 37 de 108 mujeres con aborto temprano (34.2%) y en dos de 42 mujeres con embarazo normal (4.7%) (p = 0.002). Se observó asociación positiva del riesgo de aborto temprano e infección por Chlamydia trachomatis con RM de 10.42, IC 95%: 2.39 45.54, p = 0.002. Conclusiones: encontramos una frecuencia de infección por Chlamydia trachomatis más elevada que la reportada previamente en nuestro país y un riesgo significativamente mayor de aborto temprano en mujeres embarazadas con esta infección (10.42), lo que sugiere la necesidad de incluir el estudio molecular de este patógeno en mujeres en control prenatal.

Código azul, histerotomía de reanimación en embarazo de término: reporte de un caso / Blue Code, resuscitative hysterotomy on a term pregnancy: a case report

Resumen: ANTECEDENTES: El paro cardiorrespiratorio durante el embarazo es un evento poco común, ocurre en 1 de cada 12,500 a 30,000 gestaciones, con una tasa de supervivencia de 17-59%. CASO CLÍNICO: Paciente de 23 años, con evolución normal del embarazo de 41.2 semanas; acudió a la consulta de Urgencias por actividad uterina irregular. Durante la conducción del trabajo de parto, y después de la analgesia espinal, tuvo un paro cardiorrespiratorio. Se le aplicaron las maniobras de reanimación básicas y monitoreo de la asistolia; a los 4 minutos se le practicaron: histerotomía de reanimación y retorno espontáneo de la circulación. La paciente requirió cuidados inmediatos, con seguimiento y tratamiento en terapia intensiva obstétrica durante 1 mes; fue dada de alta con mínimo daño de las funciones mentales, con restablecimiento íntegro de las mismas a los 3 meses de seguimiento. CONCLUSIONES: Debido a las implicaciones éticas y características de la enfermedad, no existe un modelo experimental para establecer las medidas durante la reanimación cardiopulmonar en el embarazo; por tanto, se implementan con base en la revisión de casos y estudios de la fisiología cardiovascular en esta etapa fisiológica de la vida. El apego y seguimiento de las recomendaciones establecidas se asocian con buen desenlace y pronóstico para la madre y su hijo, como sucedió en el caso aquí reportado.

Abstract: BACKGROUND: Cardiorespiratory arrest during pregnancy is a rare event that occurs in 1 in 12,500 to 30,000 pregnancies, with a survival rate of 17-59%. CLINICAL CASE: We report the case of a 23-year-old female patient, late-term pregnancy and labor. During labor conduction and after spinal analgesia, she presented cardiorespiratory arrest. After the start of basic resuscitation maneuvers, monitoring, and confirmed asystole, advanced maneuvers were started, culminating at 4 minutes with resuscitation hysterotomy and a subsequent spontaneous return of circulation. The patient required immediate post-arrest cares with follow-up and management in the intensive obstetric care unit for one month, after which the patient was discharged with minimal compromise of her superior mental functions; after 3 months of out clinic follow-up, the patient was healthy and her superior functions deemed to have been fully restored. CONCLUSIONS: Due to the ethical implications and characteristics of the pathology, there are no experimental models to establish measures during cardiopulmonary resuscitation in pregnancy, they are developed based on the review of clinical cases and the study of cardiovascular physiology during pregnancy. In this case report, we conclude that adhering to the established recommendations were associated with a good outcome and prognosis for both mother and child.

Plasma Levels of Free Fatty Acids in Women with Gestational Diabetes and Its Intrinsic and Extrinsic Determinants: Systematic Review and Meta-Analysis.

BACKGROUND: Free fatty acids, also known as nonesterified fatty acids, are proinflammatory molecules that induce insulin resistance in nonpregnant individuals. Nevertheless, the concentration of these molecules has not been systematically addressed in pregnant women. OBJECTIVE: This meta-analysis is aimed at evaluating the difference in free fatty acid plasma levels between women with gestational diabetes and healthy pregnant controls and their intrinsic and extrinsic determinants. METHODS: We performed a systematic search to find relevant studies published in English and Spanish using PubMed, SCOPUS, and ISI Web of Knowledge. We included observational studies measuring the mean plasma levels of free fatty acids among gestational diabetes and healthy pregnant women, with at least ten subjects being analyzed in each group. The standardized mean difference (SMD) by random effects modeling was used. Heterogeneity was assessed using Cochran's Q, H, and I 2 statistics. RESULTS: Among the 290 identified studies, twelve were selected for analysis. A total of 2426 women were included, from which 21% were diagnosed as having gestational diabetes. There were significantly higher levels of free fatty acids among women with gestational diabetes (SMD: 0.86; 0.54-1.18; p < 0.001) when compared to healthy pregnant controls and between-study heterogeneity (I 2 = 91%). The metaregression analysis showed that the gestational age at inclusion was the only cofactor influencing the mean levels of free fatty acids, indicating a trend towards lower plasma levels of free fatty acids later in gestation (estimate: -0.074; -0.143 to -0.004; p = 0.036). No significant publication bias was found nor a trend towards greater results in small studies. CONCLUSIONS: Women with gestational diabetes have higher levels of free fatty acids when compared to healthy pregnant controls. More investigation is needed to assess the potential role of free fatty acids in the prediction of gestational diabetes earlier in pregnancy.

Utilidad y eficacia de la clasificación de Robson para disminuir la tasa de cesáreas / Utility and efficacy of Robson's classification to reduce the rate of cesareas

Resumen Objetivo: Evaluar la eficacia y utilidad de la clasificación de Robson en la reducción de la práctica de cesáreas. Materiales y métodos: Estudio observacional, descriptivo, retrospectivo y de corte transversal efectuado en pacientes de nivel socioeconómico medio y bajo atendidas entre enero y diciembre de 2016 en un hospital de segundo nivel. Para clasificar a las pacientes, según sus características obstétricas, se aplicó el modelo de Robson. Resultados: Se estudiaron 374 pacientes embarazadas; de ellas 91 (24.3%) terminaron la gestación mediante cesárea. Los grupos de Robson con mayor contribución al porcentaje de cesáreas fueron: grupo 1 con 50.5%, grupo 2 con 29.8% y grupo 10 con 8.7%. El grupo 5 reportó que 62.7% de los embarazos terminaron mediante parto. El 89.8% de las pacientes ingresó con trabajo de parto espontáneo. Las principales indicaciones de cesárea fueron, en el grupo 1, trabajo de parto estacionario; en el grupo 2, cesárea iterativa y en el grupo 10, feto pretérmino. Conclusiones: La aplicación del modelo de clasificación de Robson es útil y práctica para identificar los grupos de pacientes en los que es posible disminuir el porcentaje de cesáreas.

Abstract Objective: Evaluate the effectiveness and usefulness of the Robson classification to reduce the practice of cesarean sections. Materials and methods: Observational, descriptive, retrospective and cross section was made in patients of medium and low socioeconomic status attended between January and December 2016 in a second level hospital. For classify the patients, according to their obstetric characteristics, the model of Robson was applied. Results: 374 pregnant patients were studied; in 91 (24.3%) the pregnancy ended by caesarean section. The Robson groups with the greatest percentage contribution of caesarean sections were: group 1 with 50.5%, group 2 with 29.8% and group 10 with 8.7%. Group 5 reported that 62.7% of pregnancies ended by delivery; 89.8% of the patients was admitted with spontaneous labor. The main Cesarean indications were, in group 1, stationary labor; at group 2, iterative caesarean section and group 10, preterm fetus. Conclusions: The application of the Robson classification model is useful and practice to identify groups of patients in who it is possible to decrease the percentage of cesareans.