Sendy Isarel Hernández-Gaytán

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OBJECTIVE To assess the effect of exclusive breastfeeding and its interactions with selected socioeconomic factors, on the incidence of acute infantile diarrhea during the first three months of life. MATERIAL AND METHODS A prospective cohort study with a follow up of three months was conducted in 327 mother and child pairs, living in the city of Durango,(More)
OBJECTIVE To evaluate the association of heart rate variability with job strain in first year resident physicians. METHODS We performed the study at the "Manuel Gea González" General Hospital in Mexico City. 54 resident doctors were studied over a period of 24 hr in their first year of specialization. Two questionnaires were administered: the first on(More)
OBJECTIVE To assess the availability, utilization, and costs of computerized tomography (CT scan) in private and public hospitals in Morelos State, Mexico. MATERIAL AND METHODS From January to April 1999, a cross-sectional study was carried out in two private and two public hospitals in Morelos, Mexico. Individual face-to-face interviews were conducted(More)
OBJECTIVE To assess the impact of occupational exposure to noise, as well as its relationship with other factors that can induce hearing loss. MATERIAL AND METHODS In January and February 1997, we conducted sonometry and dosimetry tests in a cement factory, as well as audiometric test in 85 cement workers, to identify sources of noise and evaluate the(More)
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