Conscious Sedation in the Critically Ill Ventilated Patient
Marco Cigada , Davide Corbella, Giovanni Mistraletti, Chiara Reali Forster, Concezione Tommasino, Alberto Morabito,Gaetano Iapichino
Journal of Critical Care (2008) 23
Purpose: the aim of sedation is to provide comfort and minimize anxiety. However, adverse effects are noteworthy, and the optimal end point of sedation in intensive care unit patients is still debated. We analyzed if a level 2 on the Ramsay Scale (ie, awake, cooperative, oriented, tranquil patient) is suitable for an invasive therapeutic approach.
Materials and Methods: forty-two patients requiring respiratory support and sedation for at least 4 days were enrolled in a prospective interventional cohort study aiming at maintaining patients awake and collaborative. The Ramsay score was recorded 3 times a day. Once a day, the nurse in charge evaluated adequacy of sedation according to the compliance with nursing care and therapeutic maneuvers in the previous 24 hours. Data were collected until patients were ventilated.
Results: overall, 264 of 582 days were classified as conscious. Sedation was adequate in 93.9% of them. In conscious days, a higher Simplified Acute Physiology Score II score and male sex significantly correlated with inadequate sedation.
Conclusions: in a population of severe intensive care unit patients, conscious sedation was achieved in almost half of the days spent on ventilation. The positive implications (eg, on length of weaning and cost of sedation) of a conservative sedation strategy may be highly relevant.
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