Publications by authors named "Christian Hohenstein"

Background: Advanced airway management (AAM) is part of the standard treatment during advanced cardiac life support (ACLS). Current studies underline the importance of a first-pass intubation success (FPS) during in-hospital ACLS. It was shown that a failed initial intubation attempt in out-of-hospital cardiac arrest (OHCA) patients in the emergency department is an independent risk factor for the decreased effectiveness of ACLS measured by the return of spontaneous circulation (ROSC).

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(1) Background: Endotracheal intubation in the prehospital setting is an important skill for emergency physicians, paramedics, and other members of the EMS providing airway management. Its success determines complications and patient mortality. The aim of this study was to find predictors for first-pass intubation success in the prehospital emergency setting.

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Background: Although pleural effusions are common among patients with acute heart failure, the relevance of pleural effusion size assessed on thoracic ultrasound has not been investigated systematically.

Methods: In this prospective observational study, we included patients hospitalised for acute heart failure and performed a thoracic ultrasound early after admission (thoracic ultrasound 1) and at discharge (thoracic ultrasound 2) independently of routine clinical management. A semiquantitative score was applied offline blinded to clinical findings to categorise and monitor pleural effusion size.

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Objective: Guidelines recommend Trendelenburg position for central venous cannulation. Critically ill patients in the emergency department often do not tolerate this positioning or have contraindications. Thirty-degree dorsal elevated position with positive end-expiratory pressure by noninvasive ventilation could pose an alternative.

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Objectives: Critically ill patients in emergency departments (ED) frequently require catheterization of the internal jugular vein. For jugular insertion, the Trendelenburg position (TP) is recommended. However, many patients in the ED do not tolerate lying in the supine or even the head-down position, or TP is contraindicated for other reasons.

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Purpose: The value of lactate as a screening biomarker in the emergency department is debated. We analysed all unselected patients in the emergency department with serum lactate measured with regard to different outcome parameters.

Material And Methods: In a retrospective single centre study, we analysed all digitalized patient data of a two-week period of all patients ≥18 where a serum lactate was measured.

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Background: Communication failure in prehospital emergency medicine can affect patient safety as it does in other areas of medicine as well. We analyzed the database of the critical incident reporting system for prehospital emergency medicine in Germany retrospectively regarding communication errors.

Methods: Experts of prehospital emergency medicine and risk management screened the database for verbal communication failure, non-verbal communication failure and missing communication at all.

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Objectives: The objective was to develop and evaluate an early sepsis detection score for the prehospital setting.

Methods: A retrospective analysis of consecutive patients who were admitted by emergency medical services (EMS) to the emergency department of the Jena University Hospital was performed. Because potential predictors for sepsis should be based on consensus criteria, the following parameters were extracted from the EMS protocol for further analysis: temperature, heart rate (HR), respiratory rate (RR), oxygen saturation (SaO2 ), Glasgow Coma Scale score, blood glucose, and systolic blood pressure (sBP).

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Background: Medical errors frequently contribute to morbidity and mortality. Prehospital emergency medicine is prone to incidents that can lead to immediate deadly consequences. Critical incident reporting can identify typical problems and be the basis for structured risk management in order to reduce and mitigate these incidents.

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[Me(4) N](+) [SO(2) F(3) ](-) , the first example of a [SO(2) F(3) ](-) salt, has been prepared from Me(4) NF and SO(2) F(2) . The colorless, microcrystalline solid was characterized by its infrared and Raman spectra. The trigonal bipyramidal structure of C(2v) symmetry of the [SO(2) F(3) ](-) anion is predicted by ab initio calculations.

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Dimethyltrifluorophosphorane reacts with strong fluoride donors, such as CsF, Me(4)NF, and Me(4)PF, under formation of dimethyltetrafluorophosphates. The salts were characterized by infrared and Raman spectroscopy and in acetonitrile solutions by NMR spectroscopy. The experimental results show that only the trans isomer is formed.

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Study Objective: Training physicians in new skills through classroom-based teaching has inherent cost and time constraints. We seek to evaluate whether Web-based didactics result in similar knowledge improvement and retention of basic ultrasonographic principles and the Extended Focused Assessment with Sonography for Trauma (EFAST) compared with the traditional method.

Methods: Physicians from 2 German emergency departments were randomized into a classroom group with traditional lectures and a Web group who watched narrated lectures online.

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We wanted to identify incidents that led or could have led to patient harm during prehospital cardiopulmonary resuscitation. A nationwide anonymous and Internet-based critical incident reporting system gave the data. During a 4-year period we received 548 reports of which 74 occurred during cardiopulmonary resuscitation.

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Background: Colloid cysts are usually benign brain tumors, which rarely cause acute neurological deterioration with sudden death due to an acute increase of intracranial pressure. So far, the final pathophysiology and clinical signs of impending death are unclear in this context.

Aim: We present a case of an adolescent who presented with symptoms similar to gastroenteritis.

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