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ZusammenfassungDas innerklinische Notfallmanagement ist ein zentraler Baustein für die Patientensicherheit im Krankenhaus. Durch Frühwarnsysteme und die Etablierung Medizinischer Einsatzteams (MET) können sich verschlechternde Patienten frühzeitig erkannt und vermeidbare Todesfälle verhindert werden. Dieser Beitrag stellt wesentliche Elemente eines modernen innerklinischen Notfallmanagements dar.

Zusammenfassung Fragestellung Für Deutschland liegen nur wenige Daten zum Gesundheitszustand und Langzeitüberleben nach außerklinischer Reanimation vor. Die vorliegende Studie untersucht den allgemeinen Gesundheitszustand und das neurologische Langzeitergebnis 2,5 bis 5 Jahre nach dem Reanimationsereignis sowie den Zusammenhang zwischen Behandlungsergebnis und präklinischen Patienten- und Behandlungsfaktoren. Methodik Alle über einen Zeitraum von 30 Monaten (2011–2013) durch den Rettungsdienst der Stadt Bonn durchgeführten Reanimationen wurden auf Grundlage der Notarzteinsatzprotokolle und des Deutschen Reanimationsregisters retrospektiv analysiert. Der allgemeine Gesundheitszustand wurde in Anlehnung an den SF-12 erfasst und das neurologische Langzeitergebnis kategorisiert (Cerebral Performance Category [CPC]). Die vorliegenden Daten wurden einer uni- und multivariaten logistischen Regressionsanalyse unterzogen. Ergebnis Von insgesamt 458 Patienten überlebten 17,9 % bis zur Krankenhausentlassung, 13,8 % mehr als 2,5 Jahre und 7,7 % bis zum Stichtag der Befragung. Von den noch lebenden Patienten hatten 85,3 % ein gutes neurologisches Ergebnis (CPC ≤ 2), welches durch ein geringeres Alter, einen beobachteten Kollaps, die Durchführung einer Defibrillation und das Ausbleiben einer Vasopressorgabe begünstigt wurde (multivariate Analyse). 74,2 % der Überlebenden beschrieben ihren Gesundheitszustand als gut. Interpretation Insgesamt überleben langfristig nur wenige Patienten einen außerklinischen Herz-Kreislauf-Stillstand. Die überlebenden Patienten beurteilen ihren Gesundheitszustand als gut und zeigen ein gutes neurologisches Ergebnis. Dabei hängt dieses Behandlungsergebnis von denselben Parametern wie der primäre Reanimationserfolg (Überleben bis Krankenhausaufnahme) ab. Die Etablierung klinischer Instrumente zur frühen Prognoseerstellung ist wünschenswert. Hierzu sind weitere Langzeituntersuchungen größerer Patientenkollektive mit Zugriff auf Routinedaten notwendig.

Objective: To assess the feasibility of extracorporeal membrane oxygenation (ECMO) or life support (ECLS) as last resort life support therapy in patients with acute pancreatitis and subsequent secondary acute respiratory distress syndrome (ARDS). Methods: Retrospective analysis from January 2013, to April 2020, of ECMO patients with pancreatitis-induced ARDS at a German University Hospital. Demographics, hospital and ICU length of stay, duration of ECMO therapy, days on mechanical ventilation, fluid balance, need for decompressive laparotomy, amount of blood products, prognostic scores (CCI (Charlson Comorbidity Index), SOFA (Sequential Organ Failure Assessment), RESP(Respiratory ECMO Survival Prediction), SAVE (Survival after Veno-Arterial ECMO)), and the total known length of survival were assessed. Results: A total of n = 495 patients underwent ECMO. Eight patients with acute pancreatitis received ECLS (seven veno-venous, one veno-arterial). Five (71%) required decompressive laparotomy as salvage therapy due to abdominal hypertension. Two patients with acute pancreatitis (25%) survived to hospital discharge. The overall median length of survival was 22 days. Survivors required less fluid in the first 72 h of ECMO support and showed lower values for all prognostic scores. Conclusion: ECLS can be performed as a rescue therapy in patients with pancreatitis and secondary ARDS, but nevertheless mortality remains still high. Thus, this last-resort therapy may be best suited for patients with fewer pre-existing comorbidities and no other organ failure.

Background Extracorporeal membrane oxygenation (ECMO) support in acute respiratory failure may be lifesaving, but bleeding and thromboembolic complications are common. The optimal anticoagulation strategy balancing these factors remains to be determined. This retrospective study compared two institutional anticoagulation management strategies focussing on oxygenator changes and both bleeding and thromboembolic events. Methods We conducted a retrospective observational cohort study between 04/2015 and 02/2020 in two ECMO referral centres in Germany in patients receiving veno-venous (VV)-ECMO support for acute respiratory failure for > 24 h. One centre routinely applied low-dose heparinization aiming for a partial thromboplastin time (PTT) of 35–40 s and the other routinely used a high-dose therapeutic heparinization strategy aiming for an activated clotting time (ACT) of 140–180 s. We assessed number of and time to ECMO oxygenator changes, 15-day freedom from oxygenator change, major bleeding events, thromboembolic events, 30-day ICU mortality, activated clotting time and partial thromboplastin time and administration of blood products. Primary outcome was the occurrence of oxygenator changes depending on heparinization strategy; main secondary outcomes were the occurrence of severe bleeding events and occurrence of thromboembolic events. The transfusion strategy was more liberal in the low-dose centre. Results Of 375 screened patients receiving VV-ECMO support, 218 were included in the analysis (117 high-dose group; 101 low-dose group). Disease severity measured by SAPS II score was 46 (IQR 36–57) versus 47 (IQR 37–55) and ECMO runtime was 8 (IQR 5–12) versus 11 (IQR 7–17) days (P = 0.003). There were 14 oxygenator changes in the high-dose group versus 48 in the low-dose group. Freedom from oxygenator change at 15 days was 73% versus 55% (adjusted HR 3.34 [95% confidence interval 1.2–9.4]; P = 0.023). Severe bleeding events occurred in 23 (19.7%) versus 14 (13.9%) patients (P = 0.256) and thromboembolic events occurred in 8 (6.8%) versus 19 (19%) patients (P = 0.007). Mortality at 30 days was 33.3% versus 30.7% (P = 0.11). Conclusions In this retrospective study, ECMO management with high-dose heparinization was associated with lower rates of oxygenator changes and thromboembolic events when compared to a low-dose heparinization strategy. Prospective, randomized trials are needed to determine the optimal anticoagulation strategy in patients receiving ECMO support.

Background Extra Corporeal Membrane Oxygenation (ECMO) has become an accepted treatment option for severely ill patients. Due to a limited availability of ECMO support therapy, patients must often be transported to a specialised centre before or after cannulation. According to the ELSO guidelines, an ECMO specialist should be present for such interventions. Here we describe the safety and efficacy of a reduced team approach involving one anaesthesiologist, experienced in specialised intensive care medicine, and a specialised critical care nurse. Methods This study is a 10 years retrospective, single institution analysis of all data collected between January 2007 and December 2016 from the medical records at the University Hospital Bonn, Germany. Results The Bonner mobile ECMO team was deployed in 170 cases for on-site evaluation for ECMO support therapy. 4 (2.4%) patients died prior to arrival or during the implementation of ECMO support. Of the remaining 166 patients, 126 were cannulated at the referring site, 40 were transported without ECMO. Of those, 21 were subsequently cannulated out our centre. 19 patients never received ECMO treatment. The primary indication for ECMO treatment was ARDS (159/166 patients). Veno-venous ECMO was initiated in 137, whilst 10 patients received veno-arterial ECMO treatment. Mean transportation time was 75 ± 36 min, and mean transport distance was 56 ± 57 km. In total, 26 complications were observed, three being directly transport-related. The overall survival was 55%. Conclusions Initiation of extracorporeal membrane oxygenation and subsequent transport can be safely and efficiently performed by a two-man team with good outcome. Electronic supplementary material The online version of this article (10.1186/s12871-019-0687-9) contains supplementary material, which is available to authorized users.

Background Acute respiratory distress syndrome (ARDS) is a life-threatening condition and the identification of the underlying direct (pulmonary) or indirect (non-pulmonary) cause is mandatory for a successful treatment. Intragastric balloon (IGB) therapy is a minimal invasive and supposedly harmless option to reduce body weight for the growing number of obese people. We present a case of a young patient who developed a direct ARDS due to initially undiagnosed abdominal pathologies caused by an IGB therapy. Case presentation A 23-year old woman was admitted because of a direct ARDS for extracorporeal membrane oxygenation (ECMO) therapy. Weeks before, an IGB has been removed because of abdominal pain and free intraabdominal air. Diagnostic work-up of free intraabdominal air, previous pain of the left shoulder and newly developed abscess pneumonia revealed a perforation of the posterior wall of the gastral antrum. This resulted in a left subphrenic abscess with destruction of the diaphragm, development of pneumonia per continuitatem and subsequent direct lung injury. The gastric perforation was endoscopically clipped and the ARDS was successfully treated under ECMO therapy. Conclusion This case illustrates that a patient presenting with direct ARDS may have upper abdominal pathologies caused by a rare complication of a supposedly harmless treatment.

Purpose Extracorporeal membrane oxygenation (ECMO) is increasingly used with various indications. The clinical course can be complicated by an abdominal compartment syndrome (ACS). A decompressive laparotomy (DL) can be an option. Materials and methods Between 2014 and 2016 175 patients underwent ECMO support. Indications, demographic data, comorbidities, morbidity, mortality and length of stay were analyzed. Results Indications for ECMO were acute respiratory distress syndrome (n = 65), postpericardiotomy syndrome (n = 37), myocardial infarction (n = 26), extracorporeal cardiopulmonary resuscitation (n = 11), and others (n = 36). ECMO support was performed as veno-venous (VV, n = 91) or veno-arterial (VA, n = 84). Eleven patients developed ACS (VV-ECMO: n = 4; VA-ECMO: n = 7) and underwent DL. Three patients survived to hospital discharge. Risk factors were age (57 vs. 60.5 years, P = 0.032), a Charlson comorbidity index >1 (CCI, P = 0.004), a Simplified Acute Physiology Score (SAPS II) ≥ 42 at admission to ICU (P = 0.013) and ≥44 at the beginning of ECMO support (P = 0.004). When an ACS/DL occurred, mortality did not differ (DL: n = 11; 73% vs. no DL: n = 164; 65%; P = 0.749). Multivarate analysis revealed CCI and SAPS as independent predictors for mortality. Conclusions Approximately 10% of patients undergoing VA-ECMO support developed an ACS. If DL is undertaken, SAPS II scores can be used as predictive factor for mortality.

ZusammenfassungIm Gegensatz zur präklinischen Notfallmedizin existieren in Deutschland bis heute keine vergleichbaren fest etablierten Strukturen oder gesetzliche Vorgaben zur Aufbau- und Ablauforganisation sowie Personalqualifikation und Ausstattung der innerklinischen Notfallversorgung. Bei perioperativen Patienten treten unerwartete Komplikationen auf Normalstation jedoch relativ häufig auf. Oft sind bereits Stunden vor einem möglichen kritischen Ereignis Warnzeichen für eine Verschlechterung zu erkennen, wobei diese zu oft unbemerkt bleiben und es im Verlauf zu vermeidbaren schwerwiegenden Komplikationen oder Herz-Kreislauf-Stillständen kommen kann. Zur Verbesserung der innerklinischen Versorgungsstruktur und zur Vermeidung von innerklinischen Herz-Kreislauf-Stillständen dient die Etablierung sog. medizinischer Einsatzteams (engl. medical emergency teams). Dieser werden im Sinne eines präventiven Therapieansatzes bei erkennbaren Abweichungen der Vitalparameter frühzeitig alarmiert. Durch diesen präventiven Therapieansatz können innerklinische Kreislaufstillstände und ungeplante Aufnahmen auf eine Intensivstation vermieden und die perioperative Patientensicherheit erhöht werden.

The eligibility criteria for applying extracorporeal cardiopulmonary resuscitation (ECPR) in patients with cardiac arrest are currently unclear. For those patients with hypothermic cardiac arrest, the European Resuscitation Council (ERC) Guidelines recommend considering ECPR only for patients with potassium We report the case of an urban unwitnessed out-of-hospital cardiac arrest patient found with her head immersed in water at a temperature of 23°C. The patient presented an unclear history and a dire combination of clinical and laboratory parameters (asystole, arterial blood gas: pH 6.8, potassium 8.3 mmol/L, lactate 16.0 mmol/L). Despite these poor prognostic indicators, ECPR was initiated after 95 minutes of CPR and the patient survived with a good neurological outcome.This case highlights the uncertainty in ECPR eligibility and prognostication, especially in those with hypothermia and water immersion for whom aggressive therapies may be warranted. Further data and improved strategies are required to delineate candidacy for this resource-intensive procedure better.

Background: Despite being still invasive and challenging, technical improvement has resulted in broader and more frequent application of extracorporeal membrane oxygenation (ECMO), to prevent hypoxemia and to reduce invasiveness of mechanical ventilation (MV). Heparin-coated ECMO-circuits are currently standard of care, in addition to heparin based anticoagulation (AC) regimen guided by activated clotting time (ACT) or activated partial thromboplastin time (aPTT). Despite these advances, a reliable prediction of hemorrhage is difficult and the risk of hemorrhagic complication remains unfortunately high. We hypothesized, that there are coagulation parameters that are indices for a higher risk of hemorrhage under veno-venous (VV)-ECMO therapy. Methods: Data from 36 patients with severe respiratory failure treated with VV-ECMO at a University Hospital intensive care unit (ICU) were analyzed retrospectively. Patients were separated into two groups based on severity of hemorrhagic complications and transfusion requirements. The following data were collected: demographics, hemodynamic data, coagulation samples, transfusion requirements, change of ECMO-circuit during treatment and adverse effects, including hemorrhage and thrombosis. Results: In this study 74 hemorrhagic events were observed, one third of which were severe. Patients suffering from severe hemorrhage had a lower survival rate on VV-ECMO (43% vs . 91%; P=0.002) and in ICU (36% vs . 86%; P=0.002). SAPS II, factor VII and X were different between mild and severe hemorrhage group. Conclusions: Severe hemorrhage under VV-ECMO is associated with higher mortality. Only factor VII and X differed between groups. Further clinical studies are required to determine the timing of initiation and targets for AC therapies during VV-ECMO.

IMPORTANCE: Although current guidelines suggest the use of regional citrate anticoagulation (which involves the addition of a citrate solution to the blood before the filter of the extracorporeal dialysis circuit) as first-line treatment for continuous kidney replacement therapy in critically ill patients, the evidence for this recommendation is based on few clinical trials and meta-analyses. OBJECTIVE: To determine the effect of regional citrate anticoagulation, compared with systemic heparin anticoagulation, on filter life span and mortality. DESIGN, SETTING, AND PARTICIPANTS: A parallel-group, randomized multicenter clinical trial in 26 centers across Germany was conducted between March 2016 and December 2018 (final date of follow-up, January 21, 2020). The trial was terminated early after 596 critically ill patients with severe acute kidney injury or clinical indications for initiation of kidney replacement therapy had been enrolled. INTERVENTIONS: Patients were randomized to receive either regional citrate anticoagulation (n = 300), which consisted of a target ionized calcium level of 1.0 to 1.40 mg/dL, or systemic heparin anticoagulation (n = 296), which consisted of a target activated partial thromboplastin time of 45 to 60 seconds, for continuous kidney replacement therapy. MAIN OUTCOMES AND MEASURES: Coprimary outcomes were filter life span and 90-day mortality. Secondary end points included bleeding complications and new infections. RESULTS: Among 638 patients randomized, 596 (93.4%) (mean age, 67.5 years; 183 [30.7%] women) completed the trial. In the regional citrate group vs systemic heparin group, median filter life span was 47 hours (interquartile range [IQR], 19-70 hours) vs 26 hours (IQR, 12-51 hours) (difference, 15 hours [95% CI, 11 to 20 hours]; P

Introduction: The NLRP3 inflammasome is a key factor in innate immunity and plays a pivotal role in driving acute lung injury via IL-1β and IL-18. Recent studies highlighted the immunomodulatory effects of tetracyclines (TET) in the treatment of inflammatory diseases and identified inhibition of NLRP3 inflammsome as a potential mechanism. Aim: We investigated in a murine model whether TET reduces NLRP3 inflammasome-mediated lung inflammation and improves outcome. Methods: Mice were challenged with LPS i.t. and treated by i.p. injection of TET from d 0 for 10 d. Lung injury was determined by measurement of i) albumin concentration by ELISA, ii) neutrophil population by flow cytometry (both in BALF) and iii) histopathology. Concentration of IL-1β, IL-6, IL-18 and TNFα was measured by multiplex assay in BALF. The effect of TET on NLRP3 inflammasome was tested in BMDMs after stimulation with LPS plus nigericin. Concentration of IL-1β and TNFα was determined by ELISA and cleavage of caspase-1 via western blot. Results: TET treated mice showed significantly reduced weight loss and mortality (43% vs. 7%) compared to PBS treated animals. TET treatment diminished lung injury in terms of lower albumin (325±35 vs 144±16µg/ml) concentration and number of neutrophils. Histopathology showed reduced lung injury in TET-treated animals. TET decreased exclusively the concentration of IL-1β (152±16 vs 86±8 pg/ml) and IL-18 in BALF. TET selectively inhibited IL-1β secretion and caspase-1 activation after NLRP3 stimulation. Conclusions: Current study demonstrates that TET reduces acute lung injury in mice via inhibiting NLRP3 inflammasome activation, thereby reducing morbidity and mortality.

Heparine gelten im Rahmen der stationaren und zunehmend auch ambulanten Thromboseprophylaxe seit Jahrzehnten als Standardtherapie. Neben dem therapeutischen Nutzen birgt die Therapie mit Heparinen allerdings auch die Gefahr unerwunschter Nebenwirkungen wie Blutungen und Thrombozytopenien. Als schwerwiegende Nebenwirkung gilt die heparininduzierte Thrombozytopenie (HIT II). Die folgende Arbeit unterzieht die HIT II einer medizinokonomischen Betrachtung (Behandlung, Arzneimittel, Folgekosten aufgrund moglicher Komplikationen) und betrachtet im Hinblick auf eine mogliche HIT-II-Prophylaxe auch Aspekte der zunehmend im Fokus stehenden Patientensicherheit. Im Rahmen einer Literaturrecherche wurden die fur eine HIT-II-Behandlung zugelassenen Wirkstoffe Argatroban und Danaparoid evaluiert. Eine HIT II – insbesondere in Kombination mit thromboembolischen Komplikationen – bedeutet fur das Krankenhaus eine medizinokonomische Belastung. Zwar stellt dies nur eine Orientierungshilfe dar, zeigt aber auf, dass ein HIT-II-Syndrom nicht ausreichend durch das DRG-Entgeltsystem kostendeckend abgebildet wird. Eine fruhzeitige Thromboseprophylaxe mit Argatroban/Danaparoid bei HIT-II-Risikopatienten ist daher aus medizinokonomischen, aber auch aus patientensicherheitsrelevanten Gesichtspunkten in Erwagung zu ziehen. Erfahrungsgemas sollte bei diesen „medical needed“-Produkten (Antikoagulanzien) eine Arzneimittelversorgung aus Grunden der Patientensicherheit gewahrleistet sein. Das Risiko einer immunologischen Reaktion auf eine Heparintherapie ist bekannt. Im Sinne einer erhohten Patientensicherheit sollte die Thromboseprophylaxe mit einer risikoadjustierten HIT-II-Prophylaxe erfolgen.

INTRODUCTION: The aim of the EuReCa ONE study was to determine the incidence, process, and outcome for out of hospital cardiac arrest (OHCA) throughout Europe.METHODS: This was an international, pr ...

Sepsis, a life threating syndrome characterized by organ failure after infection, is the most common cause of death in hospitalized patients. The treatment of sepsis is generally supportive in nature, involving the administration of intravenous fluids, vasoactive substances and oxygen plus antibiotics to eliminate the pathogen. No drugs have been approved specifically for the treatment of sepsis, and clinical trials of potential therapies have failed to reduce mortality - suggesting that new approaches are needed. Abnormalities in the immune response elicited by the pathogen, ranging from excessive inflammation to immunosuppression, contribute to disease pathogenesis. Although hundreds of immunomodulatory agents are potentially available, it remains unclear which patient benefits from which immune therapy at a given time point. Results indicate the importance of personalized therapy, specifically the need to identify the type of intervention required by each individual patient at a given point in the disease process. To address this issue will require using biomarkers to stratify patients based on their individual immune status. This article reviews recent and ongoing clinical investigations using immunostimulatory or immunosuppressive therapies against sepsis including non-pharmacological and novel preclinical approaches.

(1) Background: With the rise of multi-/pan-drug resistant (MDR/PDR) pathogens, the less utilized antibiotic Colistin has made a comeback. Colistin fell out of favor due to its small therapeutic range and high potential for toxicity. Today, it is used again as a last resort substance in treating MDR/PDR pathogens. Although new guidelines with detailed recommendations for Colistin dosing are available, finding the right dose in critically ill patients with renal failure remains difficult. Here, we evaluate the efficiency of the current guidelines&rsquo, recommendations by using high resolution therapeutic drug monitoring of Colistin. (2) Methods: We analyzed plasma levels of Colistin and its prodrug colisthimethate sodium (CMS) in 779 samples, drawn from eight PDR-infected ICU patients, using a HPLC-MS/MS approach. The impact of renal function on proper Colistin target levels was assessed. (3) Results: CMS levels did not correlate with Colistin levels. Over-/Underdosing occurred regardless of renal function and mode of renal replacement therapy. Colistin elimination half-time appeared to be longer than previously reported. (4) Conclusion: Following dose recommendations from the most current guidelines does not necessarily lead to adequate Colistin plasma levels. Use of Colistin without therapeutic drug monitoring might be unsafe and guideline adherence does not warrant efficient target levels in critically ill patients.

The current outbreak of coronavirus disease (COVID-19) has reached Germany The majority of people infected present with mild disease, but there are severe cases that need intensive care Unlike other acute infectious diseases progressing to sepsis, the severe courses of COVID19 seemingly show prolonged progression from onset of first symptoms to life-threatening deterioration of (primarily) lung function Diagnosis relies on PCR using specimens from the respiratory tract Severe ARDS reflects the hallmark of a critical course of the disease Preventing nosocomial infections (primarily by correct use of personal protective equipment) and maintenance of hospitals’ operational capability are of utmost importance Departments of Anaesthesia, Intensive Care and emergency medicine will envisage major challenges

Background In Germany, emergency medical teams are staffed with physicians but evidence regarding their prehospital diagnostic accuracy remains poor. Objective To evaluate the out-of-hospital diagnostic accuracy of physician-staffed emergency medical teams (PEMTs). Methods A retrospective observational cohort study involving the Emergency Medical Service Bonn, Germany, from January to December 2004 and 2014 respectively. A total of 8346 patients underwent medical treatment by PEMTs, of which 1960 adult patients (inclusion criteria: ≥18 years of age, hospital diagnosis available) were included for further analysis. Reasons for non-inclusion: death on scene, outpatient, interhospital transfer, mental illness, false alarm, no hospital medical history available. The overall diagnostic accuracy (correct or false) of PEMTs was measured after matching the prehospital diagnosis with the corresponding diagnosis of the hospital. Secondary outcome measures were incidence of common PEMT diagnoses (acute coronary syndrome (ACS), dyspnea, stroke/intracerebral bleeding), recognition rate of a given disease by PEMTs, and prehospital diagnostic accuracy in elderly patients. Results PEMT calls increased 2-fold over a decade (2004: n = 3151 vs. 2014: n = 5195). Overall diagnostic accuracy of PEMTs increased from 87.5% in 2004 to 92.6% in the year 2014. The incidence of common PEMT diagnoses such as ACS, dyspnea or stroke/intracerebral bleeding increased 2-fold from 2004 to 2014. The recognition rate of a given disease by the PEMT varied between 2004 and 2014: an increase was observed when a stroke/intracerebral bleeding was diagnosed (2004: 67% vs. 2014: 83%; p = 0.054), a decreased rate of recognition occurred when a syncope/collapse was diagnosed (2004: 81% vs. 2014: 56%; p = 0.007) and a sepsis appears to be a rare event for EMS personnel (2004: 0% vs. 2014: 23%). Linear regression analysis revealed that the prehospital diagnostic accuracy decreases in the elderly patient. Conclusions The overall prehospital diagnostic accuracy of PEMTs improved between the year 2004 and 2014 respectively. Our findings suggest that the incidence of common diseases (ACS, dyspnea stroke/intracerebral bleeding, sepsis) increased over a 10-year period. Diagnostic accuracy of different diseases varied but generally decreased in the elderly patient. Regular training of EMS personnel and public campaigns should be implemented to improve the diagnostic accuracy in the future. Electronic supplementary material The online version of this article (10.1186/s13049-019-0617-3) contains supplementary material, which is available to authorized users.

Patient outcome after out of hospital cardiac arrest (OHCA) depends on the cardiopulmonary resuscitation (CPR) performance and might also be influenced by organisation of the emergency medical service (EMS) and implementation of guidelines.To assess the rate of return of spontaneous circulation (ROSC) after cardiac arrest to the predicted rate by the ROSC after cardiac arrest (RACA) score over a 15-year period reflecting three different implemented ALS-guidelines in a physician-staffed EMS.All adult patients with non-traumatic OHCA in the EMS of Bonn from 1996 to 2011 were included. Utstein data from three 5-years time periods (1996-2001, 2001-2006, 2006-2011) representing different ALS-guideline implementations were collected. Group comparisons were made in terms of incidence, epidemiology and short-term outcome of CPR with emphasis on changes over time and factors of importance. In each group observed ROSC rate were compared to the predicted ROSC rates (the RACA score).CPR by the ALS unit was attempted in a total of 1989 patients (735, 666, and 588 patients in the first, second and third period, respectively). Average crude incidence of CPR per 100,000 person-years decreased over time (61.3; 55.5; 49.0/100,000/years) while patients treated were significantly older (65.5 ± 16.5; 67.9 ± 15; 68.9 ± 15.7 (p0.001)). Observed ROSC rates were higher than predicted by the RACA score in all time periods, however, admittance to ICU decreased significantly from 50% in the first five-year period to 38% last five-year period (p0.001). From first to third period the proportion of arrests with first observed rhythm of VT/VF arrests did not change (29% vs. 27%, p=0.323) nor there were changes in bystander CPR rates (17% vs. 17%, p=0.520).In a 15-years period and in the setting of a physician-staffed EMS the ROSC rates remain higher than predicted by the RACA score but the admittance to the ICU after OHCA declined significantly. This finding was accompanied by a decrease in CPR incidence and an increase in age of patients.

AimSurvival rates after out-of-hospital-cardiac-arrest (OHCA) differ widely between EMS systems. Since hypertonic saline appears to improve long-term outcome after OHCA, some local EMS systems have included it in their treatment protocols for OHCA. Our first aim was to give a quality review of one of these protocols. Our second aim was to assess whether short-term survival improves when hypertonic saline is used in resuscitation after OHCA.MethodsMatched pairs were identified for the independent “return of spontaneous circulation (ROSC) after cardiac arrest” (RACA) score variables and for use of ACD-CPR, adrenaline, and amiodarone from the German Resuscitation Registry (GRR) for January 2000 to March 2011. Patients received either 2mlkg−1 hypertonic saline with hydroxyethyl starch (7.2% NaCl with 6% hydroxyethyl starch 200,000/0.5, HyperHAES® [HHS]) infused intravenously within 10min during CPR according to local treatment protocols or standard of care CPR (NON-HHS). The primary endpoint was admission to hospital rate (with spontaneous circulation); secondary endpoint was ROSC rate in relation to RACA score.Results322 matched pairs were defined for 14 variables. Predicted ROSC-rate using RACA-score was similar in HHS (44.63%) and NON-HHS (43.63%; p=0.440). In contrast, 190 (59.0%) HHS patients achieved ROSC compared with only 136 NON-HHS patients (42.2%; χ2: p

Der innerklinische Notfall stellt eine zunehmende Herausforderung fur das Risikomanagement eines Krankenhauses dar und bislang gibt es in Deutschland keine allgemein verbindlichen Empfehlungen fur ein innerklinisches Notfallmanagement. Die Zeitverzogerung bei der Erkennung und Behandlung des kritisch Kranken auf den Bettenstationen fuhrt haufig zu schwerwiegenden Zwischenfallen. Das Konzept der traditionellen Reanimationsteams greift regelhaft zu kurz, da sie erst nach Eintritt einer akuten Verschlechterung bzw. des Herz-Kreislauf-Stillstands aktiviert werden. Die Einfuhrung eines Rapid-response-Systems mit praventivem Ansatz basierend auf einem medizinischen Notallteam (MET) stellt eine unverzichtbare Verbesserung des innerklinischen Notfallmanagements dar. Dafur genugt nicht allein die Umbenennung und Umstrukturierung des bisherigen Reanimationsteams zu einem MET. Vielmehr bedarf es der Einfuhrung standardisierter praventiver Alarmierungskriterien und strukturierter Ablaufe, einer Standardisierung der Ausbildung und der Notfallausrustung in der Klinik sowie der Bereitstellung eines an die Intensivstation angebundenen MET. Fur ein Krankenhaus mit bisher etabliertem Reanimationsteam bedeutet dies einen grundlegenden Paradigmenwechsel mit einem nachhaltigen, interdisziplinaren und institutionalisierten Prozess des Umdenkens und Reorganisierens. Ein klares Bekenntnis und andauernde gemeinsame Anstrengungen des Krankenhaustragers und aller Klinikmitarbeiter ist hierfur Voraussetzung.

The currently valid guidelines for resuscitation of the European Resuscitation Council (ERC) do not give any unambiguous recommendations for "transport with ongoing cardiopulmonary resuscitation". Furthermore, up to now there are no generally accepted criteria for terminating cardiopulmonary resuscitation, apart from certain signs of death. In spite of the generally poor outcome of patients being transported with ongoing cardiopulmonary resuscitation, there are a number of positive case reports and undisputable indications (e.g., in cases with a potentially reversible cause of cardiac arrest). The increase observed over the past few years in the number of patients being transported under cardiopulmonary resuscitation has as yet not been reflected in an improved prognosis for these patients. The use of mechanical chest compression devices with a better quality of chest compression, also under transport conditions, may have an influence on the number transports but this has not yet been evaluated sufficiently with regard to patient outcome. However, the decision to transport a patient resides with the responsible emergency physician who has to evaluate the prognosis for the patient on an individual basis.

Das Uberleben nach einem Herz-Kreislauf-Stillstand bleibt trotz erheblicher Bemuhungen zur Verbesserung der kardiopulmonalen Reanimation (CPR) gering. Die jungsten Anderungen der Internationalen Reanimationsrichtlinien 2005 betonen die Vermeidung von Unterbrechungen der Thoraxkompressionen. So wurden in der Vergangenheit auch verschiedene Reanimationsassistenzgerate mit dem Ziel entwickelt, effektive und kontinuierliche Thoraxkompressionen zu erreichen. Eine dieser Entwicklungen stellt das AutoPulse-System dar. Ausgehend von dem Fallbeispiel eines 66-jahrigen Patienten wird uber den mehr als 3-jahrigen Routineeinsatz des AutoPulse-Systems im Rettungsdienst der Stadt Bonn berichtet. Der AutoPulse stellt dieser Erfahrung nach eine sinnvolle Erweiterung und Bereicherung im Rahmen der Effektivitatsverbesserung der CPR dar.

Objective: Cardiac surgery causes induction and release of inflammatory mediators that may be regulated by genetic background. Macrophage migration inhibitory factor (MIF) is a proinflammatory mediator that is known to be up-regulated in patients undergoing cardiac operations. Here we analyzed genotype distribution and allele frequency of the MIF-173*G/C single nucleotide polymorphism (SNP) and MIF plasma levels in patients undergoing surgical revascularization with (on-pump, n = 45) and without (off-pump, n = 34) cardiopulmonary bypass (CPB). Methods: Genotyping was performed using a real-time PCR-based system with a hybridization probe system specific for the MIF-173*G/C SNP. In on-pump patients, blood samples were drawn before start of CPB, after termination of CPB and 12 h postoperatively. In off-pump patients, blood samples were collected before stabilizer placement, after removal of the stabilizer and 12 h postoperatively. MIF levels were measured using ELISA technique. Results: Genotype distribution and allele frequencies were comparable between on-pump and off-pump patients. When comparing patients according to MIF genotype, a significant increase of MIF plasma levels after completed coronary bypass grafting using CPB was found in patients heterozygous for the MIF-173*G/C SNP (p < 0.05). Moreover, on-pump patients showed significantly decreased MIF plasma levels after 12 h postoperatively (p < 0.05). In off-pump patients, MIF plasma levels were not significantly different over the time-course and were independent of the genotype. Conclusions: Patients carrying the C-allele showed significantly increased levels of the proinflammatory cytokine MIF compared to G/G homozygous when revascularization was carried out using CPB. The G/C genotype may be associated with a severe inflammatory reaction and therefore preoperative screening could be beneficial for patients undergoing cardiac surgery using CPB.

In emergency medicine accidental hypothermia (

Urosepsis is defined as sepsis caused by urinary tract infection. This occurs in 25% of all sepsis cases. Because of the increasing incidence of sepsis, this entity will be seen more frequently in medical practice and outpatient units. The immediate identification and treatment of the septic focus is crucial. Depending on severity, early reconstitution of adequate oxygen delivery has parallel priority, therefore necessitating intensive care unit treatment within the first hours. Therapy should consist of eliminating the infectious focus, antimicrobial treatment, supportive therapy, and special sepsis therapy.

Die Sepsis gehort nach wie vor zu den haufigsten Todesursachen bei Intensivpatienten. Der Pathogenese der Erkrankung liegt ein komplexes Immungeschehen zugrunde. Neueste Erkenntnisse zeigen, dass Zellen des Abwehrsystems bei der Sepsis im Rahmen der Immunantwort haufig eine Signalkaskade aktivieren, die zum programmierten Zelltod, der sog. Apoptose, fuhrt. Apoptose von Leukozyten wurde sowohl im Tiermodell als auch bei Patienten mit Sepsis beobachtet. Bei der Regulation der Apoptose spielen das mitochondriale Protein Bcl-2 und die zytoplasmatische Enzymkaskade der Kaspasen eine wesentliche Rolle. Durch Uberexprimierung von Bcl-2 oder Hemmung der Kaspasen konnte im Tiermodell der Sepsis ein deutlicher Uberlebensvorteil demonstriert werden. Erste Arbeiten zeigten auch die Relevanz der Apoptose bei Patienten mit schwerer Sepsis. Ziel aktueller Forschung auf diesem Gebiet ist es, durch gezielte Beeinflussung der Apoptose neue molekulare Ansatze zur Therapie der Sepsis zu finden.

Background Heparin-induced thrombocytopenia (HIT) causes thromboembolic complications which threaten life and limb. Heparin is administered to virtually every critically ill patient as a protective measure against thromboembolism. Argatroban is a promising alternative anticoagulant agent. However, a safe dose which still provides effective thromboembolic prophylaxis without major bleeding still needs to be identified. Methods Critically ill patients (n = 42) diagnosed with HIT at a tertiary medical center intensive care unit from 2005 to 2010 were included in this retrospective analysis. Patient records were perused for preexisting history of HIT, heparin dosage before HIT, argatroban dosage, number of transfusions required, thromboembolic complications and length of ICU stay (ICU LOS). Patients were allocated to Simplified Acute Physiology Scores above and below 30 (SAPS >30, SAPS 0.05) to achieve effective anticoagulation. No thromboembolic complications were encountered. Argatroban had to be discontinued temporarily in 16 patients for a total of 57 times due to diagnostic or surgical procedures, supratherapeutic aPTT and bleeding without increasing the number of transfusions. A history of HIT was associated with a shorter ICU LOS and significantly reduced transfusion need when compared to patients with no history of HIT. Cost calculation favour argatroban due to increased transfusion needs during heparin administration and increase ICU LOS. Conclusion Argatroban can be used at doses

Introduction Sudden cardiac arrest is one of the most frequent causes of death in the world. In highly qualified emergency medical service (EMS) systems, including well-trained emergency physicians, spontaneous circulation may be restored in up to 53% of patients at least until admission to hospital. Compared with these highly qualified EMS systems, markedly lower success rates are observed in other systems. These data clearly show that there are considerable differences between EMS systems concerning treatment success following cardiac arrest and resuscitation, although in all systems international guidelines for resuscitation are used. In this study, we investigated the impact of response time reliability (RTR) on cardiopulmonary resuscitation (CPR) incidence and resuscitation success by using the return of spontaneous circulation (ROSC) after cardiac arrest (RACA) scores and data from seven German EMS systems participating in the German Resuscitation Registry. Methods Anonymised patient data after out-of-hospital cardiac arrest gathered from seven EMS systems in Germany from 2006 to 2009 were analysed with regard to socioeconomic factors (population, area and EMS unit-hours), process quality (RTR, CPR incidence, special CPR measures and prehospital cooling), patient factors (age, gender, cause of cardiac arrest and bystander CPR). End points were defined as ROSC, admission to hospital, 24-hour survival and hospital discharge rate. χ2 tests, odds ratios and the Bonferroni correction were used for statistical analyses. Results Our present study comprised 2,330 prehospital CPR patients at seven centres. The incidence of sudden cardiac arrest ranged from 36.0 to 65.1/100,000 inhabitants/year. We identified two EMS systems (RTR < 70%) that reached patients within 8 minutes of the call to the dispatch centre 62.0% and 65.6% of the time, respectively. The other five EMS systems (RTR > 70%) reached patients within 8 minutes of the call to the dispatch centre 70.4% up to 95.5% of the time. EMS systems arriving relatively later at the patients side (RTR < 70%) initiate CPR less frequently and admit fewer patients alive to hospital (calculated per 100,000 inhabitants/year) (CPR incidence (1/100,000 inhabitants/year) RTR > 70% = 57.2 vs RTR < 70% = 36.1, OR = 1.586 (99% CI = 1.383 to 1.819); P < 0.01) (admitted to hospital with ROSC (1/100,000 inhabitants/year) RTR > 70% = 24.4 vs RTR < 70% = 15.6, OR = 1.57 (99% CI = 1.274 to 1.935); P < 0.01). Using ROSC rate and the multivariate RACA score to predict outcomes, we found that the two groups did not differ, but ROSC rates were higher than predicted in both groups (ROSC RTR > 70% = 46.6% vs RTR < 70% = 47.3%, OR = 0.971 (95% CI = 0.787 to 1.196); P = n.s.) (ROSC RACA RTR > 70% = 42.4% vs RTR < 70% = 39.5%, OR = 1.127 (95% CI = 0.911 to 1.395); P = n.s.) Conclusion This study demonstrates that, on the level of EMS systems, faster ones more often initiate CPR and increase the number of patients admitted to hospital alive. Furthermore, we show that, with very different approaches, all centres that adhere to and are intensely trained according to the 2005 European Resuscitation Council guidelines are superior and, on the basis of international comparisons, achieve excellent success rates following CPR. peerReviewed

Regional anaesthesia is commonly used for elective caesarean section. The aim of this study was to investigate whether there is a positive effect of either spinal or epidural anaesthesia on postoperative analgesic requirements and pain relief.The analgesic effect of either spinal or epidural induction of perispinal anaesthesia have been compared in 132 women (ASA I or II) scheduled for elective caesarean section, all having epidural catheterization for perioperative anaesthesia and postoperative analgesia. The patients were randomized into two groups. To achieve a sensory block height to the level of the sixth thoracic dermatome, the parturients received isobaric bupivacaine 0.5% and 5 microg sufentanil intrathecally or ropivacaine 0.75% and 10 microg sufentanil epidurally. For postoperative analgesia, all patients used patient-controlled epidural analgesia at identical settings [bolus of ropivacaine 0.133% (11-15 mg according to patient's height), lock-out time 1 h]. Intraoperative and postoperative pain was recorded using a visual analogue pain score as well as analgesic requirements over the first 24 h after surgery.One hundred and twenty-five patients completed the study. There were no differences in patient-controlled epidural analgesic requirements between groups. During surgery, the pain score on a visual analogue scale was more intense with epidural anaesthesia than with spinal anaesthesia (P0.05). For the whole 24 h observation period, the area under the curve for pain was lower with spinal anaesthesia (P0.0005). At almost all postoperative time points, visual analogue scale scores at rest and during mobilization were lower with spinal anaesthesia (P0.05), which was accompanied by less motor blockade and lower frequency of adverse effects. More patients with epidural anaesthesia received supplemental analgesic medication.In parturients undergoing elective caesarean section, postoperative use of epidural ropivacaine via patient-controlled epidural analgesia is similar after spinal and epidural anaesthesia. Spinal anaesthesia is, however, accompanied with less postoperative pain, use of additional analgesics and side-effects.

3D holographic gratings with variable periodicity represent a central part of an optical sensing system. Periodic spatial modulation of the refractive index in all three dimensions is holographically induced by multiple beam interference. The periodicity of the resulting volume diffractive optical structure is controlled by the recording beam geometry. The recording medium is a photosensitive polymer. An experimental setup for creating and analyzing such 3D gratings is presented as well as first results achieved in a 300 μm thick photopolymer sample.

Introduction The potent endogenous antimicrobial peptide human β-defensin 2 (hBD2) is a crucial mediator of innate immunity. In addition to direct antimicrobial properties, different effects on immune cells have been described. In contrast to the well-documented epithelial β-defensin actions in local infections, little is known about the leukocyte-released hBD2 in systemic infectious disorders. This study investigated the basic expression levels and the ex vivo inducibility of hBD2 mRNA in peripheral whole blood cells from patients with severe sepsis in comparison to non-septic critically ill patients and healthy individuals.

Background Despite recent advances in resuscitation algorithms, neurological injury after cardiac arrest due to cerebral ischemia and reperfusion is one of the reasons for poor neurological outcome. There is currently no adequate means of measuring cerebral perfusion during cardiac arrest. It was the aim of this study to investigate the feasibility of measuring near infrared spectroscopy (NIRS) as a potential surrogate parameter for cerebral perfusion in patients with out-of-hospital resuscitations in a physician-staffed emergency medical service. Methods An emergency physician responding to out-of-hospital emergencies was equipped with a NONIN cerebral oximetry device. Cerebral oximetry values (rSO2) were continuously recorded during resuscitation and transport. Feasibility was defined as >80% of total achieved recording time in relation to intended recording time. Results 10 patients were prospectively enrolled. In 89.8% of total recording time, rSO2 values could be recorded (213 minutes and 20 seconds), thus meeting feasibility criteria. 3 patients experienced return of spontaneous circulation (ROSC). rSO2 during manual cardiopulmonary resuscitation (CPR) was lower in patients who did not experience ROSC compared to the 3 patients with ROSC (31.6%, ± 7.4 versus 37.2% ± 17.0). ROSC was associated with an increase in rSO2. Decrease of rSO2 indicated occurrence of re-arrest in 2 patients. In 2 patients a mechanical chest compression device was used. rSO2 values during mechanical compression were increased by 12.7% and 19.1% compared to manual compression. Conclusions NIRS monitoring is feasible during resuscitation of patients with out-of-hospital cardiac arrest and can be a useful tool during resuscitation, leading to an earlier detection of ROSC and re-arrest. Higher initial rSO2 values during CPR seem to be associated with the occurrence of ROSC. The use of mechanical chest compression devices might result in higher rSO2. These findings need to be confirmed by larger studies.

Introduction In transgenic animal models of sepsis, members of the Bcl-2 family of proteins regulate lymphocyte apoptosis and survival of sepsis. This study investigates the gene regulation of pro-apoptotic and anti-apoptotic members of the Bcl-2 family of proteins in patients with early stage severe sepsis. Methods In this prospective case-control study, patients were recruited from three intensive care units (ICUs) in a university hospital. Sixteen patients were enrolled when they fulfilled the criteria of severe sepsis. Ten critically ill but non-septic patients and 11 healthy volunteers served as controls. Blood samples were immediately obtained at inclusion. To confirm the presence of accelerated apoptosis in the patient groups, caspase-3 activation and phosphatidylserine externalisation in CD4+, CD8+ and CD19+ lymphocyte subsets were assessed using flow cytometry. Specific mRNAs of Bcl-2 family members were quantified from whole blood by real-time PCR. To test for statistical significance, Kruskal-Wallis testing with Dunn's multiple comparison test for post hoc analysis was performed. Results In all lymphocyte populations caspase-3 (p < 0.05) was activated, which was reflected in an increased phosphatidylserine externalisation (p < 0.05). Accordingly, lymphocyte counts were decreased in early severe sepsis. In CD4+ T-cells (p < 0.05) and B-cells (p < 0.001) the Bcl-2 protein was decreased in severe sepsis. Gene expression of the BH3-only Bim was massively upregulated as compared with critically ill patients (p < 0.001) and 51.6-fold as compared with healthy controls (p < 0.05). Bid was increased 12.9-fold compared with critically ill patients (p < 0.001). In the group of mitochondrial apoptosis inducers, Bak was upregulated 5.6-fold, while the expression of Bax showed no significant variations. By contrast, the pro-survival members Bcl-2 and Bcl-xl were both downregulated in severe sepsis (p < 0.001 and p < 0.05, respectively). Conclusions In early severe sepsis a gene expression pattern with induction of the pro-apoptotic Bcl-2 family members Bim, Bid and Bak and a downregulation of the anti-apoptotic Bcl-2 and Bcl-xl proteins was observed in peripheral blood. This constellation may affect cellular susceptibility to apoptosis and complex immune dysfunction in sepsis.