Browsing by Author "Linares Benavides, Dayana Vanessa"
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Item Modo ventilatorio (NAVA)(Universidad Santiago de Cali, 2024) Medina Tarapues, Lennys Andrea; Linares Benavides, Dayana Vanessa; Estupiñán Pérez, Víctor Hugo (Director)Abstract Neurally Adjusted Ventilatory Assist (NAVA) is a mode of mechanical ventilation that utilizes the electrical activity of the diaphragm (Eadi) to synchronize respiratory support with the patient’s effort. Through an esophageal catheter, the ventilator detects the diaphragm's electrical signal in real time, providing assistance proportional to the neural drive. This enhances patient-ventilator synchronization, reduces respiratory workload, and allows physiological variations in tidal volume and inspiratory time, decreasing ventilatory asynchrony by up to 50%. NAVA is indicated for awake and stable patients requiring ventilation for more than 48 hours, with a PaO2/FiO2 ratio < 200. However, there are contraindications, such as hemodynamic instability, severe respiratory failure, difficulties in placing a nasogastric tube, and neuromuscular conditions or elevated intracranial pressure. Among its advantages, NAVA improves synchronization between the patient and the ventilator, automatically adjusts the level of assistance based on diaphragmatic activation, and is unaffected by leaks. However, complications may arise, including residual asynchrony, interference with the Eadi signal, diaphragm overload, and issues related to the esophageal catheter. In summary, NAVA represents a significant advancement in assisted ventilation, optimizing the interaction between the patient and the ventilator while providing more physiological and individualized support tailored to the patient's needs.