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Albani, Filippo; Fusina, Federica; Ciabatti, Gianni; Pisani, Luigi; Lippolis, Valeria; Franceschetti, Maria Elena; Giovannini, Alessia; di Mussi, Rossella; Murgolo, Francesco; Rosano, Antonio; Grasso, Salvatore; Natalini, Giuseppe
Critical care, 12/2021, Letnik: 25, Številka: 1Journal Article
Flow Index, a numerical expression of the shape of the inspiratory flow-time waveform recorded during pressure support ventilation, is associated with patient inspiratory effort. The aim of this study was to assess the accuracy of Flow Index in detecting high or low inspiratory effort during pressure support ventilation and to establish cutoff values for the Flow index to identify these conditions. The secondary aim was to compare the performance of Flow index,of breathing pattern parameters and of airway occlusion pressure (P ) in detecting high or low inspiratory effort during pressure support ventilation. Data from 24 subjects was included in the analysis, accounting for a total of 702 breaths. Breaths with high inspiratory effort were defined by a pressure developed by inspiratory muscles (P ) greater than 10 cmH O while breaths with low inspiratory effort were defined by a P lower than 5 cmH O. The areas under the receiver operating characteristic curves of Flow Index and respiratory rate, tidal volume,respiratory rate over tidal volume and P were analyzed and compared to identify breaths with low or high inspiratory effort. P , P , Pressure Time Product and Flow Index differed between breaths with high, low and intermediate inspiratory effort, while RR, RR/V and V /kg of IBW did not differ in a statistically significant way. A Flow index higher than 4.5 identified breaths with high inspiratory effort AUC 0.89 (CI 95% 0.85-0.93), a Flow Index lower than 2.6 identified breaths with low inspiratory effort AUC 0.80 (CI 95% 0.76-0.83). Flow Index is accurate in detecting high and low spontaneous inspiratory effort during pressure support ventilation.
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Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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