In a high-income country like Germany, the use of ECMO has been rapidly increasing since 2007 for both respiratory and cardiac support, with a recent plateau in vv-ECMO use. In-hospital mortality decreased with increasing ECMO utilization, but remains high, especially in older patients and in the first 48 h of use.

Table of contentsP001 - Sepsis impairs the capillary response within hypoxic capillaries and decreases erythrocyte oxygen-dependent ATP effluxR. M. Bateman, M. D. Sharpe, J. E. Jagger, C. G. EllisP002 - Lower serum immunoglobulin G2 level does not predispose to severe flu.J. Solé-Violán, M. López-Rodríguez, E. Herrera-Ramos, J. Ruíz-Hernández, L. Borderías, J. Horcajada, N. González-Quevedo, O. Rajas, M. Briones, F. Rodríguez de Castro, C. Rodríguez GallegoP003 - Brain protective effects of intravenous immunoglobulin through inhibition of complement activation and apoptosis in a rat model of sepsisF. Esen, G. Orhun, P. Ergin Ozcan, E. Senturk, C. Ugur Yilmaz, N. Orhan, N. Arican, M. Kaya, M. Kucukerden, M. Giris, U. Akcan, S. Bilgic Gazioglu, E. TuzunP004 - Adenosine a1 receptor dysfunction is associated with leukopenia: A possible mechanism for sepsis-induced leukopeniaR. Riff, O. Naamani, A. DouvdevaniP005 - Analysis of neutrophil by hyper spectral imaging - A preliminary reportR. Takegawa, H. Yoshida, T. Hirose, N. Yamamoto, H. Hagiya, M. Ojima, Y. Akeda, O. Tasaki, K. Tomono, T. ShimazuP006 - Chemiluminescent intensity assessed by eaa predicts the incidence of postoperative infectious complications following gastrointestinal surgeryS. Ono, T. Kubo, S. Suda, T. Ueno, T. IkedaP007 - Serial change of c1 inhibitor in patients with sepsis – A prospective observational studyT. Hirose, H. Ogura, H. Takahashi, M. Ojima, J. Kang, Y. Nakamura, T. Kojima, T. ShimazuP008 - Comparison of bacteremia and sepsis on sepsis related biomarkersT. Ikeda, S. Suda, Y. Izutani, T. Ueno, S. OnoP009 - The changes of procalcitonin levels in critical patients with abdominal septic shock during blood purificationT. Taniguchi, M. OP010 - Validation of a new sensitive point of care device for rapid measurement of procalcitoninC. Dinter, J. Lotz, B. Eilers, C. Wissmann, R. LottP011 - Infection biomarkers in primary care patients with acute respiratory tract infections – Comparison of procalcitonin and C-reactive proteinM. M. Meili, P. S. SchuetzP012 - Do we need a lower procalcitonin cut off?H. Hawa, M. Sharshir, M. Aburageila, N. SalahuddinP013 - The predictive role of C-reactive protein and procalcitonin biomarkers in central nervous system infections with extensively drug resistant bacteriaV. Chantziara, S. Georgiou, A. Tsimogianni, P. Alexandropoulos, A. Vassi, F. Lagiou, M. Valta, G. Micha, E. Chinou, G. MichaloudisP014 - Changes in endotoxin activity assay and procalcitonin levels after direct hemoperfusion with polymyxin-b immobilized fiberA. Kodaira, T. Ikeda, S. Ono, T. Ueno, S. Suda, Y. Izutani, H. ImaizumiP015 - Diagnostic usefullness of combination biomarkers on ICU admissionM. V. De la Torre-Prados, A. Garcia-De la Torre, A. Enguix-Armada, A. Puerto-Morlan, V. Perez-Valero, A. Garcia-AlcantaraP016 - Platelet function analysis utilising the PFA-100 does not predict infection, bacteraemia, sepsis or outcome in critically ill patientsN. Bolton, J. Dudziak, S. Bonney, A. Tridente, P. NeeP017 - Extracellular histone H3 levels are in...

BackgroundVeno-venous extracorporeal CO2 removal (vv-ECCO2R) is increasingly being used in the setting of acute respiratory failure. Blood flow rates through the device range from 200 ml/min to more than 1500 ml/min, and the membrane surface areas range from 0.35 to 1.3 m2. The present study in an animal model with similar CO2 production as an adult patient was aimed at determining the optimal membrane lung surface area and technical requirements for successful vv-ECCO2R.MethodsFour different membrane lungs, with varying lung surface areas of 0.4, 0.8, 1.0, and 1.3m2 were used to perform vv-ECCO2R in seven anesthetized, mechanically ventilated, pigs with experimentally induced severe respiratory acidosis (pH 7.0–7.1) using a 20Fr double-lumen catheter with a sweep gas flow rate of 8 L/min. During each experiment, the blood flow was increased stepwise from 250 to 1000 ml/min.ResultsAmelioration of severe respiratory acidosis was only feasible when blood flow rates from 750 to 1000 ml/min were used with a membrane lung surface area of at least 0.8 m2. Maximal CO2 elimination was 150.8 ml/min, with pH increasing from 7.01 to 7.30 (blood flow 1000 ml/min; membrane lung 1.3 m2). The membrane lung with a surface of 0.4 m2 allowed a maximum CO2 elimination rate of 71.7 mL/min, which did not result in the normalization of pH, even with a blood flow rate of 1000 ml/min. Also of note, an increase of the surface area above 1.0 m2 did not result in substantially higher CO2 elimination rates. The pressure drop across the oxygenator was considerably lower (<10 mmHg) in the largest membrane lung, whereas the smallest revealed a pressure drop of more than 50 mmHg with 1000 ml blood flow/min.ConclusionsIn this porcine model, vv-ECCO2R was most effective when using blood flow rates ranging between 750 and 1000 ml/min, with a membrane lung surface of at least 0.8 m2. In contrast, low blood flow rates (250–500 ml/min) were not sufficient to completely correct severe respiratory acidosis, irrespective of the surface area of the membrane lung being used. The converse was also true, low surface membrane lungs (0.4 m2) were not capable of completely correcting severe respiratory acidosis across the range of blood flows used in this study.Electronic supplementary materialThe online version of this article (doi:10.1186/s40635-017-0147-0) contains supplementary material, which is available to authorized users.

No abstract

Zusammenfassung Hintergrund Die außerklinische Beatmung erfährt in Deutschland eine rasante Entwicklung. Patienten mit chronischer respiratorischer Insuffizienz werden in deutlich zunehmender Zahl nichtinvasiv oder invasiv in einem häuslichen Setting beatmet. Diese Patienten müssen im Rahmen von Kontrolluntersuchungen oder Akut-Problemen immer wieder stationär behandelt werden. Die für die Steuerung des Gesundheitswesens wichtige Entwicklung der stationären Behandlungsfälle ist bislang ebenso unbekannt wie die Morbidität und Krankenhaussterblichkeit der häuslich beatmeten Patienten. Methode Von 2006 – 2016 wurden alle stationären Aufnahmen analysiert, bei denen eine Langzeit-Abhängigkeit vom Respirator (mindestens 3 Monate) bestand (Daten des Deutschen Statistischen Bundesamtes). Ergebnisse Es zeigte sich eine exponentielle Zunahme von stationären Behandlungsfällen, wobei 2006 noch 24 845 Patienten stationär behandelt werden mussten, im Jahr 2016 hingegen 86 117 Patienten. Im gleichen Zeitraum zeigte sich eine Abnahme der Krankenhaussterblichkeit von 13,2 % (2006) auf 5,7 % (2016). Im Jahr 2016 wurden zudem 47 % der Patienten auf einer Intensiv-, Weaning- oder Überwachungsstation behandelt. Es bestand eine Vielzahl von internistischen und neurologischen Komorbiditäten, welche in Verbindung mit der chronischen respiratorischen Insuffizienz die große Patientenkohorte als schwer krankes Patientenkollektiv charakterisierte. Führende Diagnosen waren die COPD mit 58 % und eine Vielzahl kardiologischer Diagnosen. Auffällig viele Patienten (24 %) zeigten eine Einschränkung der Nierenfunktion bis hin zur Dialysepflichtigkeit. Diskussion Die rasante Zunahme der außerklinischen Beatmung hat wesentlichen Einfluss auf die Entwicklung der Krankenhauslandschaft in Deutschland. Der exponentielle Anstieg der sehr pflegeintensiven Patienten stellt das Gesundheitssystem vor extreme Herausforderungen und erfordert eine gesundheitspolitische Diskussion über die Grenzen des Systems.

BackgroundElectrical impedance tomography (EIT) has been used to guide mechanical ventilation in ICU patients with lung collapse. Its use in patients with obstructive pulmonary diseases has been rare since obstructions could not be monitored on a regional level at the bedside. The current study therefore determines breath-by-breath regional expiratory time constants in intubated patients with chronic obstructive pulmonary disease (COPD) and acute respiratory distress syndrome (ARDS).MethodsExpiratory time constants calculated from the global impedance EIT signal were compared to the pneumatic volume signals measured with an electronic pneumotachograph. EIT-derived expiratory time constants were additionally determined on a regional and pixelwise level. However, regional EIT signals on a single pixel level could in principle not be compared with similar pneumatic changes since these measurements cannot be obtained in patients. For this study, EIT measurements were conducted in 14 intubated patients (mean Simplified Acute Physiology Score II (SAPS II) 35 ± 10, mean time on invasive mechanical ventilation 36 ± 26 days) under four different positive end-expiratory pressure (PEEP) levels ranging from 10 to 17 cmH2O. Only patients with moderate-severe ARDS or COPD exacerbation were included into the study, preferentally within the first days following intubation.ResultsSpearman’s correlation coefficient for comparison between EIT-derived time constants and those from flow/volume curves was between 0.78 for tau (τ) calculated from the global impedance signal up to 0.83 for the mean of all pixelwise calculated regional impedance changes over the entire PEEP range. Furthermore, Bland-Altman analysis revealed a corresponding bias of 0.02 and 0.14 s within the limits of agreement ranging from − 0.50 to 0.65 s for the aforementioned calculation methods. In addition, exemplarily in patients with moderate-severe ARDS or COPD exacerbation, different PEEP levels were shown to have an influence on the distribution pattern of regional time constants.ConclusionsEIT-based determination of breath-by-breath regional expiratory time constants is technically feasible, reliable and valid in invasively ventilated patients with severe respiratory failure and provides a promising tool to individually adjust mechanical ventilation in response to the patterns of regional airflow obstruction.Trial registrationGerman Trial Register DRKS 00011650, registered 01/31/17.Electronic supplementary materialThe online version of this article (10.1186/s13054-018-2137-3) contains supplementary material, which is available to authorized users.

Zusammenfassung Hintergrund Die außerklinische Beatmung erfährt in Deutschland eine rasante Entwicklung. Patienten mit chronischer respiratorischer Insuffizienz werden in deutlich zunehmender Zahl nichtinvasiv oder invasiv in einem häuslichen Setting beatmet. Diese Patienten müssen im Rahmen von Kontrolluntersuchungen oder Akut-Problemen immer wieder stationär behandelt werden. Die für die Steuerung des Gesundheitswesens wichtige Entwicklung der stationären Behandlungsfälle ist bislang ebenso unbekannt wie die Morbidität und Krankenhaussterblichkeit der häuslich beatmeten Patienten. Methode Von 2006 – 2016 wurden alle stationären Aufnahmen analysiert, bei denen eine Langzeit-Abhängigkeit vom Respirator (mindestens 3 Monate) bestand (Daten des Deutschen Statistischen Bundesamtes). Ergebnisse Es zeigte sich eine exponentielle Zunahme von stationären Behandlungsfällen, wobei 2006 noch 24 845 Patienten stationär behandelt werden mussten, im Jahr 2016 hingegen 86 117 Patienten. Im gleichen Zeitraum zeigte sich eine Abnahme der Krankenhaussterblichkeit von 13,2 % (2006) auf 5,7 % (2016). Im Jahr 2016 wurden zudem 47 % der Patienten auf einer Intensiv-, Weaning- oder Überwachungsstation behandelt. Es bestand eine Vielzahl von internistischen und neurologischen Komorbiditäten, welche in Verbindung mit der chronischen respiratorischen Insuffizienz die große Patientenkohorte als schwer krankes Patientenkollektiv charakterisierte. Führende Diagnosen waren die COPD mit 58 % und eine Vielzahl kardiologischer Diagnosen. Auffällig viele Patienten (24 %) zeigten eine Einschränkung der Nierenfunktion bis hin zur Dialysepflichtigkeit. Diskussion Die rasante Zunahme der außerklinischen Beatmung hat wesentlichen Einfluss auf die Entwicklung der Krankenhauslandschaft in Deutschland. Der exponentielle Anstieg der sehr pflegeintensiven Patienten stellt das Gesundheitssystem vor extreme Herausforderungen und erfordert eine gesundheitspolitische Diskussion über die Grenzen des Systems.

BackgroundVeno-venous extracorporeal carbon dioxide (CO2) removal (vv-ECCO2R) is increasingly being used in the setting of acute respiratory failure. Blood flow rates range in clinical practice from 200 mL/min to more than 1500 mL/min, and sweep gas flow rates range from less than 1 to more than 10 L/min. The present porcine model study was aimed at determining the impact of varying sweep gas flow rates on CO2 removal under different blood flow conditions and membrane lung surface areas.MethodsTwo different membrane lungs, with surface areas of 0.4 and 0.8m2, were used in nine pigs with experimentally-induced hypercapnia. During each experiment, the blood flow was increased stepwise from 300 to 900 mL/min, with further increases up to 1800 mL/min with the larger membrane lung in steps of 300 mL/min. Sweep gas was titrated under each condition from 2 to 8 L/min in steps of 2 L/min. Extracorporeal CO2 elimination was normalized to a PaCO2 of 45 mmHg before the membrane lung.ResultsReversal of hypercapnia was only feasible when blood flow rates above 900 mL/min were used with a membrane lung surface area of at least 0.8m2. The membrane lung with a surface of 0.4m2 allowed a maximum normalized CO2 elimination rate of 41 ± 6 mL/min with 8 L/min sweep gas flow and 900 mL blood flow/min. The increase in sweep gas flow from 2 to 8 L/min increased normalized CO2 elimination from 35 ± 5 to 41 ± 6 with 900 mL blood flow/min, whereas with lower blood flow rates, any increase was less effective, levelling out at 4 L sweep gas flow/min. The membrane lung with a surface area of 0.8m2 allowed a maximum normalized CO2 elimination rate of 101 ± 12 mL/min with increasing influence of sweep gas flow. The delta of normalized CO2 elimination increased from 4 ± 2 to 26 ± 7 mL/min with blood flow rates being increased from 300 to 1800 mL/min, respectively.ConclusionsThe influence of sweep gas flow on the CO2 removal capacity of ECCO2R systems depends predominantly on blood flow rate and membrane lung surface area. In this model, considerable CO2 removal occurred only with the larger membrane lung surface of 0.8m2 and when blood flow rates of ≥ 900 mL/min were used.