Rainer Dziewas

Prof. Dr. Rainer Dziewas

Department of Neurology and Neurorehabilitation, Hospital Osnabrueck, Osnabrueck, Germany
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Research Focus & Metrics

Academic Career Length

26Years (2001-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 September 2021 in European Stroke Journal
Verified
Journal Article
Open access
PDF file
RDRainer Dziewas
Rainer Dziewas
EMEmilia Michou
Emilia Michou
MTMichaela Trapl-Grundschober
Michaela Trapl-Grundschober
ALAvtar Lal
Avtar Lal
EAEthem Murat Arsava
Ethem Murat Arsava
EVEric Verin
Eric Verin
Post-stroke dysphagia (PSD) is present in more than 50% of acute stroke patients, increases the risk of complications, in particular aspiration pneumonia, malnutrition and dehydration, and is linked to poor outcome and mortality. The aim of this guideline is to assist all members of the multidisciplinary team in their management of patients with PSD. These guidelines were developed based on the European Stroke Organisation (ESO) standard operating procedure and followed the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach. An interdisciplinary working group identified 20 relevant questions, performed systematic reviews and meta-analyses of the literature, assessed the quality of the available evidence and wrote evidence-based recommendations. Expert opinion was provided if not enough evidence was available to provide recommendations based on the GRADE approach. We found moderate quality of evidence to recommend dysphagia screening in all stroke patients to prevent post-stroke pneumonia and to early mortality and low quality of evidence to suggest dysphagia assessment in stroke patients having been identified at being at risk of PSD. We found low to moderate quality of evidence for a variety of treatment options to improve swallowing physiology and swallowing safety. These options include dietary interventions, behavioural swallowing treatment including acupuncture, nutritional interventions, oral health care, different pharmacological agents and different types of neurostimulation treatment. Some of the studied interventions also had an impact on other clinical endpoints such as feedings status or pneumonia. Overall, further randomized trials are needed to improve the quality of evidence for the treatment of PSD.

1 October 2003 in Journal of Neurology
Verified
Journal Article
Closed access
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RDRainer Dziewas
Rainer Dziewas
CKCarsten Konrad
Carsten Konrad
SEStefan Evers
Stefan Evers
MBMichael Besselmann
Michael Besselmann
ERE. Bernd Ringelstein
E. Bernd Ringelstein
FSFlorian Stögbauer
Florian Stögbauer

1 June 2004 in Journal of Neurology, Neurosurgery & Psychiatry
Verified
Journal Article
Open access
PDF file
RDRainer Dziewas
Rainer Dziewas
MRM Ritter
M Ritter
MSM Schilling
M Schilling
CKC Konrad
C Konrad
SOS Oelenberg
S Oelenberg
PLP Lüdemann
P Lüdemann
Background: Aspiration pneumonia is the most important acute complication of stroke related dysphagia. Tube feeding is usually recommended as an effective and safe way to supply nutrition in dysphagic stroke patients. Objective: To estimate the frequency of pneumonia in acute stroke patients fed by nasogastric tube, to determine risk factors for this complication, and to examine whether the occurrence of pneumonia is related to outcome. Methods: Over an 18 month period a prospective study was done on 100 consecutive patients with acute stroke who were given tube feeding because of dysphagia. Intermediate outcomes were pneumonia and artificial ventilation. Functional outcome was assessed at three months. Logistic regression and multivariate regression analyses were used, respectvely, to identify variables significantly associated with the occurrence of pneumonia and those related to a poor outcome. Results: Pneumonia was diagnosed in 44% of the tube fed patients. Most patients acquired pneumonia on the second or third day after stroke onset. Patients with pneumonia more often required endotracheal intubation and mechanical ventilation than those without pneumonia. Independent predictors for the occurrence of pneumonia were a decreased level of consciousness and severe facial palsy. The NIH stroke scale score on admission was the only independent predictor of a poor outcome. Conclusions: Nasogastric tubes offer only limited protection against aspiration pneumonia in patients with dysphagia from acute stroke. Pneumonia occurs mainly in the first days of the illness and patients with decreased consciousness and a severe facial palsy are especially endangered.

1 October 2018 in The Lancet Neurology
Verified
Journal Article
Closed access
RDRainer Dziewas
Rainer Dziewas
RSRebecca Stellato
Rebecca Stellato
ITIngeborg van der Tweel
Ingeborg van der Tweel
EWErnst Walther
Ernst Walther
TBTobias Braun
Tobias Braun
BPBettina Pfausler
Bettina Pfausler

30 May 2008 in Cerebrovascular Diseases
Verified
Journal Article
Closed access
RDRainer Dziewas
Rainer Dziewas
TWTobias Warnecke
Tobias Warnecke
SÖStefan Ölenberg
Stefan Ölenberg
ITInga Teismann
Inga Teismann
JZJulian Zimmermann
Julian Zimmermann
WSWolf R. Schäbitz
Wolf R. Schäbitz
Background and Purpose: Dysphagia is an important complication of acute stroke with a reported incidence of up to 76%. The purpose of this investigation was to develop and to evaluate an endoscopic scoring system which has the potential to guide dysphagia management in acute stroke patients. Methods: A fiberoptic endoscopic evaluation of swallowing (FEES) was carried out in 100 patients within 72 h of stroke onset. During endoscopic examination, the secretion status was evaluated, and the patient was successively given standard volumes of puree consistency, liquids and soft solid food. Penetration and aspiration was assessed using a 5-point scale. Results: Nearly 80% of patients showed penetration or aspiration during FEES. These events occurred more frequently with liquids and soft solid food than with puree. Penetration or aspiration at any stage of examination predicted failure at the subsequent food consistency. Furthermore, key findings of endoscopic evaluation were predictive of the need for later orotracheal intubation. Based on these observations a score was developed that grades stroke-related dysphagia according to the risk of penetration or aspiration of the different food consistencies tested. Assessment of interrater reliability by means of 25 additional endoscopic examinations resulted in excellent agreement between three investigators, reflected by a ĸ coefficient of 0.89. Conclusion: Stroke-related dysphagia may effectively be graded using a simple endoscopic scoring system. The usefulness of this screening protocol with respect to patient outcome and intercurrent complications has to be studied in prospective clinical trials.

4 May 2021 in Neurological Research and Practice
Verified
Journal Article
Open access
PDF file
RDRainer Dziewas
Rainer Dziewas
HAHans-Dieter Allescher
Hans-Dieter Allescher
IAIlia Aroyo
Ilia Aroyo
GBGudrun Bartolome
Gudrun Bartolome
UBUlrike Beilenhoff
Ulrike Beilenhoff
CPChristina Pflug
Christina Pflug
Introduction: Neurogenic dysphagia defines swallowing disorders caused by diseases of the central and peripheral nervous system, neuromuscular transmission, or muscles. Neurogenic dysphagia is one of the most common and at the same time most dangerous symptoms of many neurological diseases. Its most important sequelae include aspiration pneumonia, malnutrition and dehydration, and affected patients more often require long-term care and are exposed to an increased mortality. Based on a systematic pubmed research of related original papers, review articles, international guidelines and surveys about the diagnostics and treatment of neurogenic dysphagia, a consensus process was initiated, which included dysphagia experts from 27 medical societies.Recommendations: This guideline consists of 53 recommendations covering in its first part the whole diagnostic spectrum from the dysphagia specific medical history, initial dysphagia screening and clinical assessment, to more refined instrumental procedures, such as flexible endoscopic evaluation of swallowing, the videofluoroscopic swallowing study and high-resolution manometry. In addition, specific clinical scenarios are captured, among others the management of patients with nasogastric and tracheotomy tubes. The second part of this guideline is dedicated to the treatment of neurogenic dysphagia. Apart from dietary interventions and behavioral swallowing treatment, interventions to improve oral hygiene, pharmacological treatment options, different modalities of neurostimulation as well as minimally invasive and surgical therapies are dealt with.Conclusions: The diagnosis and treatment of neurogenic dysphagia is challenging and requires a joined effort of different medical professions. While the evidence supporting the implementation of dysphagia screening is rather convincing, further trials are needed to improve the quality of evidence for more refined methods of dysphagia diagnostics and, in particular, the different treatment options of neurogenic dysphagia. The present article is an abridged and translated version of the guideline recently published online (https://www.awmf.org/uploads/tx_szleitlinien/030-111l_Neurogene-Dysphagie_2020-05.pdf).