Asociación entre el estado de infección por VIH y complicaciones infecciosas poscesárea electiva / Association between HIV infection status and infectious complications after an elective c-section

RESUMEN

Objetivos. Determinar la asociación entre VIH y complicaciones infecciosas (CI) después de una cesárea electiva. Materiales y métodos. Estudio de cohortes no concurrentes; se revisaron las historias clínicas de 237 cesáreas electivas en gestantes VIH reactivas atendidas en el Instituto Nacional Materno Perinatal de Perú, realizadas entre 2004 a 2012. Estas fueron pareadas por cirujano y fecha de cesárea con 237 gestantes VIH no reactivas. Se recogieron datos sociodemográficos, clínicos, características de la cesárea y relacionados a la infección por el VIH. Las CI se evaluaron según las recomendaciones del NHI Consensus Development Task Force. Se realizó el análisis bivariado con un nivel de significación del 5% y el cálculo del Odds Ratio (OR) con intervalo de confianza (IC) al 95%. Se construyó un modelo de regresión logística condicional. Resultados. El 13,9% de mujeres VIH positivas presentaron CI y 9,7% del grupo control (OR 1,5 IC95% [0,9-2,7]); las expuestas (mujeres con VIH) tuvieron mayor probabilidad de tener una infección del tracto urinario (ITU) que las no expuestas (ORa 4,5 IC95% [1,4-14,5]). Se encontró asociación entre CI y el tipo de incisión (ORa 2,3 IC95% [1,1-4,5]) y el tiempo de hospitalización (6 frente a 3 días, p<0,001). Conclusiones. Las mujeres VIH positivas sin tratamiento antirretroviral tuvieron mayor riesgo de CI; aunque no se observó mayor riesgo global de CI en expuestas después de una cesárea electiva. El principal factor de riesgo asociado a una CI poscesárea electiva en mujeres VIH positivas fue el tipo de incisión.

ABSTRACT

Objectives: To determine the connection between HIV and infectious complications (IC) after an elective C-section. Materials and methods. A non-concurrent cohort study was conducted, in which the clinical records of 237 elective C-sections on HIV-positive pregnant women who gave birth at the Instituto Nacional Materno Perinatal (National Maternal Perinatal Institute) between 2004 and 2012 were revised. The records were matched by surgeon and C-section date, with 237 HIV-negative pregnant women. Socio-demographic and clinical data were collected, along with characteristics of the C-section and data related to the HIV infection. IC were evaluated according to the NIH Consensus Development Task Force. The descriptive analysis and the bivariate analysis were carried out with a significance level of 5% for the hypothesis tests and the calculation of the Odds Ratio (OR) with a confidence interval (CI) at 95%. A conditional logistic regression model was built. Results. IC were present in 13.9% of HIV-positive women and 9.7% of the control group (OR 1.5 CI95% [0.9-2.7]); those who were exposed (women with HIV) were more likely to have a urinary tract infection (UTI) than those who were not exposed (ORa 4.5 CI95% [1.4-14.5]). A connection was found between the IC and the type of incision (ORa 2.3 CI95% [1.1-4.5]) and time of hospitalization (6 versus 3 days, p<0.001). Conclusions. Exposed women did not register a greater global risk of IC after an elective C-section; however, they were, indeed, more likely to get a UTI. Those HIV-positive women who were not receiving antiretroviral treatment were in greater risk of IC. The main risk factors associated with a post C-section IC in HIV-positive women were the type of incision, as well as the surgery time with the UTI.