Relaciones entre los rotíferos, copépodos planctónicos ciclopoides y la calidad del agua en dos embalses Brasileños

Planktonic rotifers and cyclopoid copepods were studied in two reservoirs of different trophic states (eutrophic and oligo/mesoeutrophic) in the south of Brazil. During a year, monthly samplings were carried out in three stations in each reservoir. Species richness, frequency and abundance were used to find out useful and indicatives trends of water quality based on these organisms, reinforced by literature data. Species that showed higher differences between reservoirs were chosen. For Rotifera, richness, frequency and abundance of Brachionus were higher in the eutrophic reservoir, but Plationus patulus occurred only in the oligo/mesotrophic reservoir. For copepods, Tropocyclops prasinus dominated in the eutrophic reservoir, but Thermocyclops decipiens, T. minutus, T. inversus and Microcyclops anceps were dominants in the oligo/mesotrophic reservoir. In the canonical correspondence analysis, these species were indicators of the trophic state and were related with chlorophyll-a, total phytoplankton and total phosphorus. The use of these species can be efficient in the studied regions (subtropical/temperate), but comparing with other Brazilian reservoirs of tropical climate, the results could be different. Despite the dominance of T. decipiens over T. minutus, T. inversus has been widely used in Brazil as an indicator of eutrophic waters; in those cases of excessive eutrophication, other species, more rustic, commonly dominate. In the present study, Thermocyclops was dominant in the oligo/mesotrophic reservoir. The dominance of Brachionus for rotifers and Tropocyclops prasinus and Acanthocyclops robustus for copepods were indicative of eutrophic conditions.

Síndrome da apnéia obstrutiva do sono: diagnóstico e tratamento

The Syndrome Obstructive Sleep Apnea (OSA) is defined by recurrent episodes of a total or partial obstruction of the airway during sleep, considered apnea and hypopnea respectively. Considered to be increasing by increasing the number of individuals with a disorder breathing, Being continually increasing the number of individuals with a respiratory disorder, OSA can be considered a public health problem that deserves greater attention in relation to diagnoses and treatments that are being conducted. The objective of this study is through a literature review which should be evaluated during the diagnosis and etiology, consequences and treatment of respiratory disorders not adequately treated. The etiology is multifactorial and may be associated with exogenous factors or pathological and anatomical factors. In addition to the own symptoms interfere with the quality of life of the individual, depending on the intensity, OSA can trigger more serious complications. This is a complex syndrome which may have varying degrees and irreversible consequences to the body. The choice of treatment should be based on clinical conditions, the severity of the apnea, the degree of urgency of treatment and the patient's preferences, but the treatments available will not be fully effective if there are no changes in lifestyle of it. The respiratory disorders can range from a simple nasal obstruction and intermittent obstruction more severe, emphasizing the importance of a complete diagnosis, which must be multidisciplinary, through a team relationship between doctor and dentist.