Electrical impedance tomography monitoring in acute respiratory distress syndrome patients with mechanical ventilation during prolonged positive end-expiratory pressure adjustments
| Autor: | Sheng Hsiang Lin, Jen Suo Cheng, Wei Chi Lin, Yen Fen Ko, Chang Wen Chen, Chia Fu Hsu, Kuo-Sheng Cheng |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male ARDS Respiratory rate medicine.medical_treatment Positive-Pressure Respiration 03 medical and health sciences 0302 clinical medicine Fraction of inspired oxygen Electric Impedance Tidal Volume Medicine Humans 030212 general & internal medicine Tomography Tidal volume Positive end-expiratory pressure Aged Medicine(all) Mechanical ventilation Aged 80 and over lcsh:R5-920 Respiratory Distress Syndrome business.industry 030208 emergency & critical care medicine General Medicine Oxygenation acute respiratory distress syndrome respiratory system Middle Aged medicine.disease respiratory tract diseases Anesthesia Linear Models Arterial blood Female lcsh:Medicine (General) business therapeutics electrical impedance tomography positive end-expiratory pressure circulatory and respiratory physiology |
| Zdroj: | Journal of the Formosan Medical Association, Vol 115, Iss 3, Pp 195-202 (2016) |
| ISSN: | 0929-6646 |
| Popis: | Background/purposeThe time required to reach oxygenation equilibrium after positive end-expiratory pressure (PEEP) adjustments in mechanically ventilated patients with acute respiratory distress syndrome (ARDS) is unclear. We used electrical impedance tomography to elucidate gas distribution and factors related to oxygenation status following PEEP in patients with ARDS.MethodsNineteen mechanically ventilated ARDS patients were placed on baseline PEEP (PEEPB) for 1 hour, PEEPB − 4 cmH2O PEEP (PEEPL) for 30 minutes, and PEEPB + 4 cmH2O PEEP (PEEPH) for 1 hour. Tidal volume and respiratory rate were similar. Impedance changes, respiratory parameters, and arterial blood gases were measured at baseline, 5 minutes, and 30 minutes after PEEPL, and 5 minutes, 15 minutes, 30 minutes, and 1 hour after PEEPH.ResultsPaO2/fraction of inspired oxygen (P/F ratio) decreased quickly from PEEPB to PEEPL, and stabilized 5 minutes after PEEPL. However the P/F ratio progressively increased from PEEPL to PEEPH, and a significantly higher P/F ratio and end-expiratory lung impedance were found at 60 minutes compared to 5 minutes after PEEPH. The end-expiratory lung impedance level significantly correlated with P/F ratio (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|