Irrigation-induced or secondary salinization can occur when salts are introduced by irrigation water and accumulate within the root zone due to insufficient leaching. Mediterranean regions are especially susceptible, given the predominant climate and the expanding of irrigation areas. In this study, two indices to assess the risk of salinization (RSA) and sodification (RSO), previously applied at a regional scale, were used in a hydro-agricultural area (AHA) in Southern Portugal, in ten crop fields. Information on climate, irrigation water quality, soil characteristics, and land use was obtained from large databases and from local data. The results revealed the feasibility of using the RSA and RSO indices both on large and smaller scales, seeing as most of the area in the monitored crop fields presented the same risk classes (62% in RSA and 78% in RSO). Deviations were due to the reduction in scores for drainage and, in the case of RSO, the assigned irrigation method based on the land occupation class. Considering that different spatial scales of risk assessment are associated with different objectives and management options, a risk management framework was outlined following a multi-scale perspective for mitigation actions in salt-sensitive areas, ranging from territorial planning to the adoption of on-farm practices that can contribute to the sustainability of irrigated agriculture.
Intravenous thrombolysis with recombinant tissue plasminogen activator (rtPA) is the established treatment for acute ischemic stroke and has been highly effective in reducing the neurological deficit. Serious adverse events are not uncommon, with hemorrhage being the major complication. We describe the case of a patient with acute ischemic stroke that also presented with vague cardiac symptoms and was treated with rtPA, which was complicated by a hemopericardium causing cardiac tamponade. Pericardiocentesis was promptly performed, which resulted in rapid resolution of the cardiogenic shock. The patient recovered consciousness within a few minutes. A search of the MEDLINE database shows that this is the first report of cardiac tamponade after rtPA thrombolysis occurring in a patient with no history of recent myocardial infarction or aortic dissection.
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