López Campos Celsa, Rincón Castañeda Cuauhtémoc B, Borja Aburto Víctor, Gómez Muñoz Aristides, Téllez Valdés Oswaldo, Martínez Ordaz Verónica, Cano Ríos Pedro, Ramírez Arriaga Elia, Martínez Hernández Enrique, Martínez-Cairo Cueto Salvador, Albores Medina Arnulfo
Unidad de Investigación Médica en Epidemiología Clínica, Hospital de Especialidades núm. 71, Centro Médico Nacional de Torreón, Coahuila, IMSS.
Rev Alerg Mex. 2003 Jul-Aug;50(4):129-46.
Bronchial asthma is the most common chronic disease in children, producing the highest absenteeism among children and adults.
To determine the relation between respiratory function in asthmatic children and contaminant and climatic environmental factors.
It was performed a study with 26 asthmatic patients, from the Immuno-Allergies Department of the Specialties Hospital no. 71 of the Centro Medico Nacional Torreon, with an 8-month-follow-up. By a home monitoring, subjects determined their peak expiratory flow (PEF) twice a day: PEF1: in the morning, at getting up without or before medication, and PEF2: at night, before sleeping without or before medication.
From June to August 1995, as well as from September to November 1995, a relation between pulmonary function, measured by PEF1 and PEF2, and some of the palinologic families or species studied was not found. On the other hand, from December 1995 to February 1996 a significant relation between the concentration of pollen's particles of Chenopodiaceaes and Amaranthaceaes and the difference between PEF1 and PEF2 (Difpef), with a p value < 0.05.
Environmental Chenopodiaceaes' and Amaranthaceaes' pollen is related to a variability of 0.0075 L/min of Difpef for each grain of pollen/m3 in the environment during winter, after rain time of the Comarca Lagunera.
支气管哮喘是儿童最常见的慢性疾病，在儿童和成人中缺勤率最高。
确定哮喘儿童的呼吸功能与污染物及气候环境因素之间的关系。
对国立托雷翁医疗中心第71专科医院免疫过敏科的26例哮喘患者进行了一项为期8个月的随访研究。通过家庭监测，受试者每天测量两次呼气峰值流速（PEF）：PEF1：早晨起床后未用药或用药前；PEF2：晚上睡觉前未用药或用药前。
1995年6月至8月以及1995年9月至11月，未发现通过PEF1和PEF2测量的肺功能与所研究的一些古生物学科或物种之间存在关联。另一方面，1995年12月至1996年2月，藜科和苋科花粉颗粒浓度与PEF1和PEF2之差（Difpef）之间存在显著关联，p值<0.05。
在拉古内拉地区雨后的冬季，环境中藜科和苋科的花粉与环境中每粒花粉/立方米Difpef的0.0075升/分钟的变异性有关。
