Publications by authors named "L Darbera"

Background: Therapeutic hypothermia was shown to facilitate resumption of spontaneous circulation when instituted during cardiac arrest. Here, we investigated whether it directly improved the chance of successful resuscitation independently of adrenaline administration in rabbits. We further evaluated the direct effect of hypothermia on vascular function in vitro.

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Background: Total liquid ventilation (TLV) with perfluorocarbons has been shown to induce rapid protective cooling in animal models of myocardial ischemia and cardiac arrest, with improved neurological and cardiovascular outcomes after resuscitation. In this study, the authors hypothesized that hypothermic TLV can also limit kidney injury after cardiac arrest.

Methods: Anesthetized rabbits were submitted to 15 min of untreated ventricular fibrillation.

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Objectives: Ultrafast and whole-body cooling can be induced by total liquid ventilation with temperature-controlled perfluorocarbons. Our goal was to determine whether this can afford maximal cardio- and neuroprotections through cooling rapidity when coronary occlusion is complicated by cardiac arrest.

Design: Prospective, randomized animal study.

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Article Synopsis
  • Mitochondrial dysfunction is a major issue after ischemic events, and this study aimed to see if mild hypothermia can reduce reactive oxygen species (ROS) production before such events.
  • During experiments with isolated rat heart cells and rabbit heart mitochondria, it was found that cooling to 32°C significantly decreased ROS generation and improved mitochondrial function compared to normal temperatures.
  • The findings suggest that applying mild hypothermia quickly during ischemia can protect heart cells by lowering oxidative stress and maintaining mitochondrial health.
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Background: In animal models of cardiac arrest, the benefit afforded by hypothermia is closely linked to the rapidity of the decrease in body temperature after resuscitation. Because total liquid ventilation (TLV) with temperature-controlled perfluorocarbons induces a very rapid and generalized cooling, we aimed to determine whether this could limit the post-cardiac arrest syndrome in a rabbit model. We especially focused on neurological, cardiac, pulmonary, liver and kidney dysfunctions.

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