Adrián Poblano

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BACKGROUND Infants from neonatal intensive care units (NICU) are at high risk for sensorineural hearing loss (SNHL); however, risk factors may change from NICU to NICU and from country to country. Our objective was to describe the main causes associated with SNHL in infants from a tertiary level NICU in Mexico City and to show the associated audiometric(More)
Wave III latency and the III-V interpeak interval of brainstem auditory evoked responses in infants in the first weeks of life decreased and increased, respectively, in association with mid-pregnancy maternal blood lead levels (2.5-35 micrograms/dl) in a group of 30 prospectively followed healthy pregnancies and deliveries. The rapid myelination of(More)
Previous work from this laboratory demonstrated an association between higher maternal blood lead level at 20 weeks of pregnancy and increased I-V and III-V interpeak intervals in the brainstem auditory evoked response (BAER) recorded in 1-month-old infants. We repeated the BAER measurements with a larger group of children (n = 100-113) from the same study(More)
OBJECTIVE The main objective of this study was to describe frequency of risk factors in newborns who present different types of apnea in polysomnographic (PSG) recordings in neonatal care units. METHODS The study was carried out in neonatal care units of a perinatal tertiary level institution in Mexico City between August 2002 and August 2003. Infants(More)
OBJECTIVE To perform a complete Intelligence quotient (IQ) measurement (verbal, performance, and total) and subsequently, to compare executive function (EF) measurements in subgroups of children with attention deficit-hyperactivity disorder (ADHD) with a control group. METHOD We studied a group of children from 7-12 years of age from public elementary(More)
The relationship between low-level childhood lead exposure and developmental retardation has been proposed but the existing evidence is weak. We examined the EEG of 42 children participating in the Mexico City Prospective Lead Study to determine if relative theta power and distribution across the scalp was related to history of lifetime lead exposure as(More)
BACKGROUND Extremely low birth weight (ELBW) has been associated with poor cognitive development in children. We performed this research to establish the association between ELBW and the influence of biological and socioeconomic factors in the intelligence quotient (IQ) score in school-age children. METHODS This study comprised 184 children with mean and(More)
OBJECTIVE To compare frequency of sleep disorders (SD) and executive dysfunction (ED) in children with attention deficit-hyperactivity disorder (ADHD) and a control group. METHOD We studied 156 children with ADHD with a mean age of 8.5 years, and a control group with 111 children with a mean age of 8.3 years. We utilized the Pediatric Sleep Questionnaire(More)
BACKGROUND Some authors have mentioned that intersensory integration is damaged in children with learning disabilities (LDs), and other investigators point to motor control alterations in the same patients. Thus, we decided to study these hypotheses by means of posturographic recordings. METHODS A highly selected group of 27 children with LDs was compared(More)
Although most investigators agree that there are electroencephalogram (EEG) changes with chronological age around puberty, no one has remarked on why this is so. As the increase in testosterone at the end of prepubertal childhood is a biomarker for the on-set of a period of accelerated growth and development, we searched for an association between(More)