|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 3 van 11 gevonden artikelen
| Titel: |
Breathing-phase selective filtering of respiratory data improves analysis of dynamic respiratory mechanics |
| Auteur: |
Lozano-Zahonero, Sara Buehler, Sarah Schumann, Stefan Guttmann, Josef |
| Verschenen in: |
Technology & health care |
| Paginering: | Jaargang 22 (2014) nr. 5 pagina's 717-728 |
| Jaar: |
2014-07-24 |
| Inhoud: |
BACKGROUND: The analysis of non-linear respiratory system mechanics under the dynamic conditions of controlled mechanical ventilation is affected by systemic disturbances of the respiratory signals. Cardio-pulmonary coupling induces cardiogenic oscillations to the respiratory signals, which appear prominently in the second half of expiration. OBJECTIVE: We hypothesized that breathing phase-selective filtering of expiratory data improves the analysis of respiratory system mechanics. METHODS: We retrospectively analyzed data from a multicenter-study (28 patients with injured lungs, under volume-controlled ventilation) and from two additional studies (3 lung healthy patients and 3 with injured lungs, under pressure-controlled ventilation). Data streams were recorded at different levels of positive end-expiratory pressure. Using the gliding-SLICE method, intratidal dynamic respiratory mechanics were analyzed with and without low-pass filtering of expiratory or inspiratory data separately. The quality of data analysis was derived from the coefficient of determination (R^2). RESULTS: Without filtering, R^2 lay below 0.995 for 87 of 280 investigated data streams. In 68 cases expiration-selective low-pass filtering improved the quality of analysis to R^2 ⩾ 0.995. In contrast, inspiration-selective filtering did not improve R^2. CONCLUSIONS: The selective filtering of expiration data eliminates negative side-effects of cardiogenic oscillations thus leading to a significant improvement of the analysis of dynamic respiratory system mechanics. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 11 gevonden artikelen
| << vorige | volgende >> |