RT Journal Article T1 Effects of sedatives and opioids on trigger and cycling asynchronies throughout mechanical ventilation: an observational study in a large dataset from critically ill patients. A1 de Haro, Candelaria A1 Magrans, Rudys A1 López-Aguilar, Josefina A1 Montanyà, Jaume A1 Lena, Enrico A1 Subirà, Carles A1 Fernandez-Gonzalo, Sol A1 Gomà, Gemma A1 Fernández, Rafael A1 Albaiceta, Guillermo M A1 Skrobik, Yoanna A1 Lucangelo, Umberto A1 Murias, Gastón A1 Ochagavia, Ana A1 Kacmarek, Robert M A1 Rue, Montserrat A1 Blanch, Lluís A1 Asynchronies in the Intensive Care Unit (ASYNICU) Group, K1 Asynchronies K1 Double cycling K1 Ineffective inspiratory efforts during expiration K1 Mechanical ventilation K1 Opioids K1 Sedatives AB In critically ill patients, poor patient-ventilator interaction may worsen outcomes. Although sedatives are often administered to improve comfort and facilitate ventilation, they can be deleterious. Whether opioids improve asynchronies with fewer negative effects is unknown. We hypothesized that opioids alone would improve asynchronies and result in more wakeful patients than sedatives alone or sedatives-plus-opioids. This prospective multicenter observational trial enrolled critically ill adults mechanically ventilated (MV) > 24 h. We compared asynchronies and sedation depth in patients receiving sedatives, opioids, or both. We recorded sedation level and doses of sedatives and opioids. BetterCare™ software continuously registered ineffective inspiratory efforts during expiration (IEE), double cycling (DC), and asynchrony index (AI) as well as MV modes. All variables were averaged per day. We used linear mixed-effects models to analyze the relationships between asynchronies, sedation level, and sedative and opioid doses. In 79 patients, 14,166,469 breaths were recorded during 579 days of MV. Overall asynchronies were not significantly different in days classified as sedatives-only, opioids-only, and sedatives-plus-opioids and were more prevalent in days classified as no-drugs than in those classified as sedatives-plus-opioids, irrespective of the ventilatory mode. Sedative doses were associated with sedation level and with reduced DC (p  Sedatives, whether alone or combined with opioids, do not result in better patient-ventilator interaction than opioids alone, in any ventilatory mode. Higher opioid dose (alone or with sedatives) was associated with lower AI without depressing consciousness. Higher sedative doses administered alone were associated only with less DC. ClinicalTrial.gov, NCT03451461. YR 2019 FD 2019-07-05 LK https://hdl.handle.net/10668/26306 UL https://hdl.handle.net/10668/26306 LA en DS RISalud RD Apr 6, 2025