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- W2472714882 abstract "No studies have evaluated the impact of different settings of non-invasive ventilation (NIV) in patients affected by amyotrophic lateral sclerosis (ALS). We explored consequences of positive end-expiratory pressure (PEEP) application on effectiveness of ventilation, sleep architecture and heart rate variability (HRV) in patients with ALS naïve to ventilatory treatment.In two consecutive nights, 25 patients received in random order 0 or 4 cm H2 0 of PEEP during nocturnal NIV administration (Idea Ultra ResMed) with the same level of total positive inspiratory pressure. Polysomnographies were performed to evaluate sleep and NIV quality, as well as HRV. HRV was analyzed on 4-h periods and on 5-min segments of stable NREM sleep.We did not observe differences in gas exchanges during NIV with and without PEEP. Conversely, during PEEP application increases in leaks (41.4 ± 29.3% vs 31.0 ± 25.7%, P = 0.0007) and in autotriggerings (4.2 (IQR 1.3-10.0) vs 0.9 (IQR 0.0-3.0) events/h, P < 0.001, PEEP vs no PEEP, respectively) occurred. Besides, N3 sleep stage duration decreased (2.5% (IQR 0.0-18.0) vs 0.0% (IQR0.0-12.1), P = 0.001) and arousal/awakening index increased (16.9 ± 7.4 vs 13.4 ± 5.0 events/h, P = 0.01). Data on HRV were available in 15 patients. A higher low/high frequency ratio, either in the 4-h (3.8 ± 2.6 vs 2.9 ± 1.7, P = 0.04, PEEP vs no PEEP, respectively) or in the 5-min segments (2.6 ± 1.8 vs 1.45 ± 0.9 P = 0.01) was found during PEEP administration.In ALS patients, PEEP application during NIV was associated with worse NIV and sleep quality and with higher sympathetic activity." @default.
- W2472714882 created "2016-07-22" @default.
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- W2472714882 date "2016-06-20" @default.
- W2472714882 modified "2023-10-03" @default.
- W2472714882 title "Effects of positive end expiratory pressure administration during non-invasive ventilation in patients affected by amyotrophic lateral sclerosis: A randomized crossover study" @default.
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- W2472714882 doi "https://doi.org/10.1111/resp.12836" @default.
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