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Tako-tsubo cardiomyopathy in clinical toxinology: A systematic review.
Tako-tsubo cardiomyopathy (TTC) is a transient left ventricular dysfunction, normally triggered by emotional or physical stress, although it is also associated with to use of drugs, drug abuse, or some intoxications. In addition, TTC has been reported in some case reports derived from the exposure of patients to animal venoms, toxins or poisons, or bacterial infections. However, to date, a systematic assessment of TTC in clinical toxinology is lacking. Therefore the aim of this study was to collect and integrate the available information about TTC in clinical toxinology. After our search strategy, 19 articles were retrieved, resulting in 20 case reports. Most cases occurred in women (75.0%). The venomous species that trigger TTC are bee/wasp, including probable Africanized honey bee and Vespa orientalis (15.0%), scorpions (Tytius serrulatus and Androctonus australis, 15.0%), a spider (Latrodectus tredecimguttatus, 5.0%), snakes (Gloydius blomhofii and Naja nivea, 10.0%), Clostridium sp (C. tetani, C. botulinum and C. difficile, 45.0%) and jellyfish (Pelagia noctiluca and Carukia barnesi, 10.0%). Among the affected people there were two deaths. In all case reports authors diagnosed TTC by using the combination of some of the following strategies: clinical findings, echocardiography, magnetic cardiac resonance, electrocardiogram changes and/or the increased plasma levels of cardiac damage biomarkers. In most cases images were available. We hypothesized the possible mode of action of venoms, toxins or poisons to induce TTC, however other mechanisms may exist, but they have not been described yet. Therefore, further studies are needed. In some cases, venoms, toxins, or poisons might cause catecholamine discharge either directly or indirectly, therefore, this was suggested as the trigger of TTC. Finally, the appearance of TTC should be considered in clinical toxinology.
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