Objectives: The first aim of this study was to assess the implementation of a sedative and analgesic drug rotation protocol in a PICU. The second aim was to analyze the incidence of withdrawal syndrome, drug doses, and time of sedative or analgesic drug infusion in children after the implementation of the new protocol. Design: Prospective observational study. Setting: PICU of a tertiary care hospital between June 2012 and June 2016. Patients: All patients between 1 month and 16 years old admitted to the PICU who received continuous IV infusion of sedative or analgesic drugs for more than 4 days were included in the study. Interventions: A sedative and analgesic drug rotation protocol was designed. The level of sedation, analgesia, and withdrawal syndrome were monitored with validated scales. The relationship between compliance with the protocol and the incidence of withdrawal syndrome was studied. Measurements and Main Results: One-hundred pediatric patients were included in the study. The protocol was followed properly in 35% of patients. Sixty-seven percent of the overall cohort presented with withdrawal syndrome. There was a lower incidence rate of withdrawal syndrome (34.3% vs 84.6%; p < 0.001), shorter PICU length of stay (median 16 vs 25 d; p = 0.003), less time of opioid infusion (median 5 vs 7 d for fentanyl; p = 0.004), benzodiazepines (median 5 vs 9 d; p = 0.001), and propofol (median 4 vs 8 d; p = 0.001) in the cohort of children in which the protocol was followed correctly. Conclusions: Our results show that compliance with the drug rotation protocol in critically ill children requiring prolonged sedation may reduce the appearance of withdrawal syndrome without increasing the risk of adverse effects. Furthermore, it may reduce the time of continuous IV infusions for most sedative and analgesic drugs and the length of stay in PICU.

BackgroundPersistent interstitial pulmonary emphysema (PIE) is a rare disease and it is even more uncommon in full-term infants, like our patient. When conservative management is not successful, surgical treatment should be considered. In our case, ECMO support was iniciated to keep the patient ventilated in order to allow the lung to heal using lung protection strategies.Case presentationWe report an 18-day-old male infant with bronchiolitis that required mechanical ventilation with high positive airway pressures due to severe respiratory insufficiency. Chest X-rays and computed tomography scan revealed a severely hyperinflated left lung with extensive destructive changes and multiple small bullae. These findings were consistent with diffuse persistent interstitial emphysema (PIE), probably due to mechanical ventilation. The patient required high frequency oscillatory ventilation, inotropic support and continuous renal replacement therapy. He eventually suffered a cardiac arrest that required cardiopulmonary resuscitation and ECMO during 5 days with progressive clinical improvement and normalization of the X-ray.ConclusionWe present a patient with diffuse persistent interstitial emphysema who, despite an unfavorable evolution with different mechanical ventilation strategies, had a good response after ECMO assistance.

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