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Sokołowska EM, Wityk P, Szypenbejl J, Petrosjan R, Raczak-Gutknecht J, Waszczuk-Jankowska M, Dudzik D, Markuszewski M, Siemiński M. Clinical image of sepsis-associated encephalopathy midst E. coli urosepsis: Emergency department database study. Heliyon 2024; 10:e29530. [PMID: 38655312 PMCID: PMC11036046 DOI: 10.1016/j.heliyon.2024.e29530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/26/2024] Open
Abstract
Background Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection, which, if untreated, leads to multi-organ failure. One of the severe possible complications is sepsis associated encephalopathy (SAE), a neurological dysfunction occurring secondary to a severe inflammatory response. It manifests as acute cognitive dysfunction and sudden-onset dysfunctions in mental state. Uropathogenic Escherichia coli is the most common pathogen causing bacteremia, responsible for 80% of uncomplicated outpatient urinary tract infections and 40% of nosocomial infections. The study aimed to assess the difference in the severity and the course of urosepsis caused by E. coli in patients with and without septic encephalopathy. Materials and methods This study presents a retrospective analysis of the population of urosepsis patients admitted to the Emergency Department between September 2019 and June 2022. Inflammatory parameters, urinalysis and blood cultures were performed, along with a clinical evaluation of sepsis severity and encephalopathy. The patients were then stratified into SAE and non-SAE groups based on neurological manifestations and compared according to the collected data. Results A total of 199 septic patients were included in the study. E. coli-induced urosepsis was diagnosed in 84 patients. In this group, SAE was diagnosed in 31 (36.9%) patients (33.3% in males, 40.5% females). Patients with SAE were found to be hypotensive (p < 0,005), with a higher respiratory rate (p < 0,017) resulting in a higher mortality rate (p = 0.002) compared to non-SAE septic patients. The APACHE II score was an independent risk factor associated with a higher mortality rate. Biochemical parameters between the groups did not show any statistical importance related to the severity of urosepsis. Conclusions The severity of urosepsis and risk of SAE development increase according to the clinical condition and underlying comorbidities. Urosepsis patients with SAE are at a higher risk of death. Patients should undergo more careful screening for the presence of SAE on admission, and more intense monitoring and treatment should be provided for patients with SAE. This study indicates the need to develop projects aiming to further investigate neuroprotective interventions in sepsis.
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Affiliation(s)
| | - Paweł Wityk
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Gdańsk, Poland
| | - Jacek Szypenbejl
- Department of Emergency Medicine, Medical University of Gdansk, Poland
| | - Rafael Petrosjan
- Emergency Department, University Clinical Center, Gdansk, Poland
| | - Joanna Raczak-Gutknecht
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Gdańsk, Poland
| | | | - Danuta Dudzik
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Gdańsk, Poland
| | - Michał Markuszewski
- Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Gdańsk, Poland
| | - Mariusz Siemiński
- Department of Emergency Medicine, Medical University of Gdansk, Poland
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Szypenbejl J, Hoffmann M, Chwojnicki K, Czyż-Szypenbejl K, Kowalke A, Węgłowska Z, Siemiński M. The importance of blood pressure measurements at the emergency department in detection of arterial hypertension. Cardiol J 2023:VM/OJS/J/91386. [PMID: 37067335 DOI: 10.5603/cj.a2023.0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 12/30/2022] [Accepted: 03/24/2023] [Indexed: 04/18/2023] Open
Abstract
BACKGROUND Arterial hypertension (AH) is the most important modifiable risk factor for cardiovascular diseases in Poland and around the world. Unfortunately, despite its potentially catastrophic consequences, more than 30% of hypertensive patients in Poland remain undiagnosed. Therefore, emergency department (ED) triage may play a role in screening of a significant proportion of the population. The present study aimed to assess the prevalence of hypertension in patients reporting to the ED by verifying ad hoc measurements with ambulatory blood pressure monitoring (ABPM). METHODS The study included 78,274 patients admitted to the ED of the University Clinical Center in Gdansk from 01.01.2019 to 31.12.2020, with elevated blood pressure values (systolic blood pressure [SBP] > 140 mmHg and/or diastolic blood pressure [DBP] > 90 mmHg) during triage according to the inclusion and exclusion criteria. RESULTS Out of 34,597 patients with SBP > 140 mmHg and/or DBP > 90 mmHg, 27,896 patients (80.6% of patients) had previously been diagnosed with AH. Finally, a group of 6701 patients with elevated values of arterial blood pressure in triage, who had not yet been diagnosed with AH, was identified. This accounted for 8.6% of patients admitted to the ED. Ultimately, 58 patients (26 women and 36 men) agreed to undergo ABPM. Based on the analysis, AH 32 patients were diagnosed with AH (55.2%). CONCLUSIONS The ED plays an essential role in diagnosing hypertension among people reporting to the ED for various reasons. There is a high probability of a diagnosis of AH in a group of patients who have elevated blood pressure values during triage and have not yet been diagnosed with hypertension.
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Affiliation(s)
- Jacek Szypenbejl
- Department of Emergency Medicine, Medical University of Gdansk, Poland.
| | - Michał Hoffmann
- Department of Hypertension and Diabetology, Medical University of Gdansk, Poland
| | - Kamil Chwojnicki
- Department of Anesthesiology and Intensive Care, Medical University of Gdansk, Poland
| | | | - Adrianna Kowalke
- Department of Emergency Medicine, Medical University of Gdansk, Poland
| | - Zuzanna Węgłowska
- Department of Emergency Medicine, Medical University of Gdansk, Poland
| | - Mariusz Siemiński
- Department of Emergency Medicine, Medical University of Gdansk, Poland
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Pyrzowski J, Le Douget JE, Fouad A, Siemiński M, Jędrzejczak J, Le Van Quyen M. Zero-crossing patterns reveal subtle epileptiform discharges in the scalp EEG. Sci Rep 2021; 11:4128. [PMID: 33602954 PMCID: PMC7892826 DOI: 10.1038/s41598-021-83337-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 12/14/2020] [Indexed: 11/08/2022] Open
Abstract
Clinical diagnosis of epilepsy depends heavily on the detection of interictal epileptiform discharges (IEDs) from scalp electroencephalographic (EEG) signals, which by purely visual means is far from straightforward. Here, we introduce a simple signal analysis procedure based on scalp EEG zero-crossing patterns which can extract the spatiotemporal structure of scalp voltage fluctuations. We analyzed simultaneous scalp and intracranial EEG recordings from patients with pharmacoresistant temporal lobe epilepsy. Our data show that a large proportion of intracranial IEDs manifest only as subtle, low-amplitude waveforms below scalp EEG background and could, therefore, not be detected visually. We found that scalp zero-crossing patterns allow detection of these intracranial IEDs on a single-trial level with millisecond temporal precision and including some mesial temporal discharges that do not propagate to the neocortex. Applied to an independent dataset, our method discriminated accurately between patients with epilepsy and normal subjects, confirming its practical applicability.
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Affiliation(s)
- Jan Pyrzowski
- Bioelectrics Lab, Institute of Brain and Spine (ICM), (UMRS 1127, CNRS UMR 7225), Pitié-Salpêtriere Hospital, 47 Boulevard de l'Hôpital, 75013, Paris, France
| | | | - Amal Fouad
- Bioelectrics Lab, Institute of Brain and Spine (ICM), (UMRS 1127, CNRS UMR 7225), Pitié-Salpêtriere Hospital, 47 Boulevard de l'Hôpital, 75013, Paris, France
- Department of Neurology, Ain-Shams University, Cairo, Egypt
| | - Mariusz Siemiński
- Department of Emergency Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Joanna Jędrzejczak
- Department of Neurology and Epileptology, Medical Centre for Postgraduate Education, Warsaw, Poland
| | - Michel Le Van Quyen
- Bioelectrics Lab, Institute of Brain and Spine (ICM), (UMRS 1127, CNRS UMR 7225), Pitié-Salpêtriere Hospital, 47 Boulevard de l'Hôpital, 75013, Paris, France.
- Sorbonne University, UPMC Univ, Paris 06, 75005, Paris, France.
- Laboratoire D'Imagerie Biomédicale, (INSERM U1146UMR7371 CNRS, Sorbonne université), Campus des Cordeliers, 15 rue de l'Ecole de Médecine, 75006, Paris, France.
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Jaskólska M, Chylińska M, Masiak A, Siemiński M, Ziętkiewicz M, Czuszyńska Z, Smoleńska Ż, Zdrojewski Z. Neuro-Sjögren: Uncommon or underestimated problem? Brain Behav 2020; 10:e01665. [PMID: 32583978 PMCID: PMC7428478 DOI: 10.1002/brb3.1665] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVES Sjögren's syndrome (SS) is a chronic inflammatory disease with an autoimmune background with possible complications from peripheral (PNS) and central nervous system (CNS). The aim of this study was to assess the prevalence and to describe the phenotype of peripheral neuropathies in patients with SS. MATERIALS & METHODS We studied fifty patients with primary Sjögren's syndrome for peripheral nervous system involvement. All patients underwent neurological and rheumatological examination followed by nerve conduction studies (NCS) of nine peripheral nerves. RESULTS Thirty-six patients (72%) fulfilled the criteria for the diagnosis of neuropathy. Carpal tunnel syndrome (54%) and axonal sensorimotor neuropathy (22%) were the most common. Neurological symptoms preceded the diagnosis of SS in eight patients. CONCLUSIONS Peripheral neuropathies are frequent in SS patients. Neurologists should be aware of possible autoimmune causes of neuropathies because clinical manifestations of neuropathy may precede the development of other symptoms of the autoimmune disease.
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Affiliation(s)
- Marta Jaskólska
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdansk, Poland
| | | | - Anna Masiak
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdansk, Poland
| | - Mariusz Siemiński
- Department of Adult Neurology, Medical University of Gdansk, Gdansk, Poland
| | - Marcin Ziętkiewicz
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdansk, Poland
| | - Zenobia Czuszyńska
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdansk, Poland
| | - Żaneta Smoleńska
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdansk, Poland
| | - Zbigniew Zdrojewski
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdansk, Poland
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Jaskólska M, Chylińska M, Masiak A, Nowicka-Sauer K, Siemiński M, Ziętkiewicz M, Czuszyńska Z, Zdrojewski Z. Peripheral neuropathy and health-related quality of life in patients with primary Sjögren's syndrome: a preliminary report. Rheumatol Int 2020; 40:1267-1274. [PMID: 32172462 PMCID: PMC7316843 DOI: 10.1007/s00296-020-04543-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 02/27/2020] [Indexed: 12/20/2022]
Abstract
Sjögren's syndrome (SS) is a chronic autoimmune disease with a wide spectrum of possible organ involvement. Peripheral (PNS) and central nervous system (CNS)-related symptoms may occur in the course of the disease. The aim of this study was to compare the health-related quality of life (HR-QOL) in SS patients with and without peripheral neuropathy. The study involved 50 patients with primary Sjögren's syndrome (pSS). All patients underwent neurological clinical examination followed by nerve conduction studies (NCS) and rheumatological examination. Thirty-six-item Short Form Health Survey (SF-36) was used for evaluating HR-QOL. To assess pSS activity, the EULAR Sjögren's Syndrome Disease Activity Index (ESSDAI) and EULAR Sjögren's Syndrome Patient Reported Index (ESSPRI) were used. For the assessment of clinical disability due to peripheral neuropathy, the Overall Disability Sum Score scale (ODSS) was used. Additional evaluation of pain was performed with the use of the Visual Analogue Scale (VAS) and a semistructured interview. Twenty-three (46%) patients were diagnosed with peripheral neuropathy. The most common PNS manifestation was sensorimotor neuropathy (47%). Neurological symptoms preceded the diagnosis of pSS in eight patients. The following domains of the SF-36 form were significantly lower scored by patients with peripheral nervous system involvement: role-physical [0 (0-100) vs. 75 (0-100)], role-emotional [67 (0-100) vs. 100 (0-100)], vitality [40 (10-70) vs. 50 (20-75)], bodily pain [45 (10-75) vs. 55 (0-100)], and general health [20 (5-50) vs. 30 (0-50)] (p ≤ 0.05). Our study showed that peripheral neuropathy was a common organ-specific complication in SS patients. In pSS patients, coexisting neurological involvement with symptoms such as pain and physical disability may be responsible for diminished HR-QOL.
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Affiliation(s)
- Marta Jaskólska
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdańsk, Poland.
| | | | - Anna Masiak
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdańsk, Poland
| | | | - Mariusz Siemiński
- Department of Adult Neurology, Medical University of Gdansk, Gdańsk, Poland
| | - Marcin Ziętkiewicz
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdańsk, Poland
| | - Zenobia Czuszyńska
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdańsk, Poland
| | - Zbigniew Zdrojewski
- Department of Internal Medicine, Connective Tissue Diseases and Geriatrics, Medical University of Gdansk, Gdańsk, Poland
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Lewandowska K, Małkiewicz MA, Siemiński M, Cubała WJ, Winklewski PJ, Mędrzycka-Dąbrowska WA. The role of melatonin and melatonin receptor agonist in the prevention of sleep disturbances and delirium in intensive care unit - a clinical review. Sleep Med 2020; 69:127-134. [PMID: 32074506 DOI: 10.1016/j.sleep.2020.01.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 12/16/2019] [Accepted: 01/15/2020] [Indexed: 12/19/2022]
Abstract
AIM The intensive care unit (ICU) environment contributes to the development of sleep disturbances. Sleep disturbances, sleep fragmentation, and multiple awakening episodes lead to the circadian rhythm disorder, which increases the risk of delirium. Melatonin and melatonin receptor agonist is widely used agent in the therapy of sleep disturbances. However, there is also some for its efficacy in ICU delirium. Enteral melatonin and ramelteon supplementation eliminates (partially) the delirium inducing factors. METHODS PubMed/MEDLINE, OVID, Embase, Cochrane Library, and Web of Science databases were searched using adequate key words. We reviewed the literature on the role of melatonin and ramelteon in the prevention of sleep disturbances and delirium in intensive care units and analysed the methods of melatonin therapy in an ICU setting. Review followed the PRISMA statement. A review written protocol was not drafted. RESULTS Originally 380 studies were searched in five scientific databases. After rejecting the duplicate results, 125 results were obtained. Finally, 10 scientific studies were included in the review. In selected articles, the leading topics analysed were the role of melatonin and ramelteon in the prevention of delirium and sleep disorders. In addition, the noted effect of therapy with these agents on reducing the ventilation time of mechanical time and the demand for psychoactive substances in the ICU environment. CONCLUSION Reduction of either the incidence or the severity of delirium course is possible by eliminating its risk factors. Risk factors are directly related to sleep disorders. To reduce the problem, therefore, a holistic approach to the source is necessary. The efficacy of melatonin therapy in an ICU setting requires confirmation in studies including a greater number of participants as the impact of melatonin on these factors is yet to be fully elucidated. However, the prognosis is predictive because this concept provides patients with a minimally invasive and natural form of therapy.
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Affiliation(s)
- Katarzyna Lewandowska
- Department of Anaesthesiology Nursing and Intensive Care, Medical University of Gdansk, Gdansk, Poland
| | - Marta A Małkiewicz
- Department of Human Physiology, Medical University of Gdansk, Gdansk, Poland; Department of Psychiatry, Medical University of Gdansk, Gdansk, Poland
| | - Mariusz Siemiński
- Department of Emergency Medicine, Medical University of Gdansk, Gdansk, Poland
| | - Wiesław J Cubała
- Department of Psychiatry, Medical University of Gdansk, Gdansk, Poland
| | - Paweł J Winklewski
- Department of Human Physiology, Medical University of Gdansk, Gdansk, Poland; Department of Clinical Anatomy and Physiology, Pomeranian University of Slupsk, Slupsk, Poland
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Wszolek ZK, Sławek J, Siemiński M. Editorial Announcement - The Change of Publisher of the Polish Journal of Neurology and Neurosurgery (Neurologia i Neurochirurgia Polska). Neurol Neurochir Pol 2018; 52:637. [PMID: 30553409 DOI: 10.1016/j.pjnns.2018.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Siemiński M, Sławek J, Wszołek Z. Editorial - The Bibliometric Measurements of the Polish Journal of Neurology and Neurosurgery (Neurologia i Neurochirurgia Polska) for 2017. Neurol Neurochir Pol 2018; 52:ii. [PMID: 30119779 DOI: 10.1016/s0028-3843(18)30304-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jędrzejczak J, Mazurkiewicz-Bełdzińska M, Szmuda M, Majkowska-Zwolińska B, Steinborn B, Ryglewicz D, Owczuk R, Bartkowska-Śniatkowska A, Widera E, Rejdak K, Siemiński M, Nagańska E. Convulsive status epilepticus management in adults and children: Report of the Working Group of the Polish Society of Epileptology. Neurol Neurochir Pol 2018; 52:419-426. [PMID: 29937151 DOI: 10.1016/j.pjnns.2018.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 04/11/2018] [Indexed: 10/14/2022]
Abstract
INTRODUCTION The Working Group was established at the initiative of the General Board of the Polish Society of Epileptology (PSE) to develop an expert position on the treatment of convulsive status epilepticus (SE) in adults and children in Poland. Generalized convulsive SE is the most common form and also represents the greatest threat to life, highlighting the importance of the choice of appropriate therapeutic treatment. AIM OF GUIDELINE We present the therapeutic options separately for treatment during the early preclinical (>5-30min), established (30-60min), and refractory (>60min) SE phases. This division is based on time and response to AEDs, and indicates a practical approach based on pathophysiological data. RESULTS Benzodiazepines (BZD) are the first-line drugs. In cases of ineffective first-line treatment and persistence of the seizure, the use of second-line treatment: phenytoin, valproic acid or phenobarbital is required. SE that persists after the administration of benzodiazepines and phenytoin or another second-line AED at appropriate doses is defined as refractory and drug resistant and requires treatment in the intensive care unit (ICU). EEG monitoring is essential during therapy at this stage. Anesthesia is typically continued for an initial period of 24h followed by a slow reversal and is re-established if seizures recur. Anesthesia is usually administered either to the level of the "burst suppression pattern" or to obtain the "EEG suppression" pattern. CONCLUSIONS Experts agree that close and early cooperation with a neurologist and anesthetist aiming to reduce the risk of pharmacoresistant cases is an extremely important factor in the treatment of patients with SE. This report has educational, practical and organizational aspects, outlining a standard plan for SE management in Poland that will improve therapeutic efficacy.
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Affiliation(s)
- J Jędrzejczak
- Department of Neurology and Epileptology, Centre of Postgraduate Medical Education, Warsaw, Poland
| | | | - M Szmuda
- Department of Developmental Neurology, Chair of Neurology, Medical University of Gdańsk, Poland
| | - B Majkowska-Zwolińska
- Centre for Epilepsy Diagnosis and Treatment, Foundation of Epileptology, Warsaw, Poland
| | - B Steinborn
- Department of Developmental Neurology, Poznan Univerity of Medical Sciences, Poznań, Poland
| | - D Ryglewicz
- 1st Neurological Department, Institute of Psychiatry and Neurology, Warsaw, Poland
| | - R Owczuk
- Department of Anaesthesiology and Intensive Therapy, Medical University of Gdansk, Poland
| | - A Bartkowska-Śniatkowska
- Department of Paediatric Anaesthesiology and Intensive Therapy, Poznan University of Medical Sciences, Poznań, Poland
| | - E Widera
- Clinic of Pediatrics and Neurology of Developmental Age, Medical University of Silesia, Katowice, Poland
| | - K Rejdak
- Department of Neurology, Medical University of Lublin, Poland
| | - M Siemiński
- Department of Emeregency Medicine, Medical University of Gdansk, Poland
| | - E Nagańska
- Department of Experimental and Clinical Neuropathology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.
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Pyrzowski J, Siemiński M, Sarnowska A, Jedrzejczak J, Nyka WM. Interval analysis of interictal EEG: pathology of the alpha rhythm in focal epilepsy. Sci Rep 2015; 5:16230. [PMID: 26553287 PMCID: PMC4639771 DOI: 10.1038/srep16230] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 10/09/2015] [Indexed: 11/26/2022] Open
Abstract
The contemporary use of interictal scalp electroencephalography (EEG) in the context of focal epilepsy workup relies on the visual identification of interictal epileptiform discharges. The high-specificity performance of this marker comes, however, at a cost of only moderate sensitivity. Zero-crossing interval analysis is an alternative to Fourier analysis for the assessment of the rhythmic component of EEG signals. We applied this method to standard EEG recordings of 78 patients divided into 4 subgroups: temporal lobe epilepsy (TLE), frontal lobe epilepsy (FLE), psychogenic nonepileptic seizures (PNES) and nonepileptic patients with headache. Interval-analysis based markers were capable of effectively discriminating patients with epilepsy from those in control subgroups (AUC~0.8) with diagnostic sensitivity potentially exceeding that of visual analysis. The identified putative epilepsy-specific markers were sensitive to the properties of the alpha rhythm and displayed weak or non-significant dependences on the number of antiepileptic drugs (AEDs) taken by the patients. Significant AED-related effects were concentrated in the theta interval range and an associated marker allowed for identification of patients on AED polytherapy (AUC~0.9). Interval analysis may thus, in perspective, increase the diagnostic yield of interictal scalp EEG. Our findings point to the possible existence of alpha rhythm abnormalities in patients with epilepsy.
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Affiliation(s)
- Jan Pyrzowski
- Department of Adult Neurology, Medical University of Gdansk, Poland
| | | | - Anna Sarnowska
- Department of Neurology and Epileptology, Medical Centre for Postgraduate Education, Warsaw, Poland
| | - Joanna Jedrzejczak
- Department of Neurology and Epileptology, Medical Centre for Postgraduate Education, Warsaw, Poland
| | - Walenty M Nyka
- Department of Adult Neurology, Medical University of Gdansk, Poland
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Teodorczyk J, Szmuda T, Siemiński M, Lass P, Słoniewski P. Evaluation of usefulness of scintigraphic imaging in diagnosis of intrathecal drug delivery system malfunction - a preliminary report. Pol J Radiol 2013; 78:21-7. [PMID: 24115956 PMCID: PMC3789929 DOI: 10.12659/pjr.889130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 06/20/2013] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Implantable intrathecal drug delivery systems (IDDS) are basic tool enabling chronic intrathecal pharmacotherapy. Lack of expected clinical results of IDDS therapy necessitates search for the cause with the help of diagnostic imaging methods among other things. Beside radiological techniques, it is also possible to visually assess IDDS systems by nuclear medicine methods. In this study we assess utility of radioisotopic methods in differential diagnosis of failure of therapy with IDDS systems. MATERIAL/METHODS Scintigraphic studies were performed in selected patients with neurological diseases associated with spasticity, who had IDDS system implanted and were unable to maintain satisfying clinical effect of inrathecally infused baclofen. After emptying the IDDS system of the drug, radiotracer (99mTc-DTPA) solution was injected into the pump reservoir. Subsequently, a series of scintigraphic images was registered, demonstrating passage and distribution of the infused radiotracer. RESULTS In all investigated cases, scintigraphic study resulted in acquiring relevant additional diagnostic information. Normal or disrupted distribution of radiotracer in spinal canal allowed for a diagnosis drug resistance or demonstrated presence of arachnoid adhesions respectively. Early appearance of radiotracer in blood was considered a proof of leak. Our examinations had decisive influence on further patient treatment, allowing for diagnosis of drug resistance in one patient or complication related to IDDS system in three other cases including breakage of a catheter, pump malfunction and arachnoid adhesions. CONCLUSIONS Scintigraphic methods carry significant amount of information facilitating final diagnosis of the cause of IDDS therapy failure. They should become an important element complementing the diagnostic strategy in patients with suspected failure of intrathecal drug administration systems. Interpretation of radioisotopic studies, since they are purely functional, must be performed in strict relation to clinical data and radiological examinations as they carry indispensable, basic information regarding morphology.
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Affiliation(s)
- Jacek Teodorczyk
- Department of Nuclear Medicine, Medical University of Gdańsk, Gdańsk, Poland
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Abstract
OBJECTIVE Sleep pattern at high altitude has been studied, mainly with the use of polysomnography. This study aimed to analyze subjective sleep quality at high altitude using the following standardized scales: the Pittsburgh Sleep Quality Index (PSQI) and the Athens Insomnia Scale (AIS-8). METHODS Thirty-two members of 2 expeditions--28 males and 4 females (mean age 31 years)--participated in this study conducted in Nepal, Himalayas (Lobuche East, 6119 m above sea level [masl]), Kyrgyzstan, Pamirs (Lenin Peak, 7134 masl), and Poland (sea level). The scales were administered twice, at high altitude (mean altitude 4524 masl) and at sea level. RESULTS Both measures showed a decrease in sleep quality at high altitude (statistical significance, P < .001). Sleep problems affected general sleep quality and sleep induction. Sleep disturbances due to awakenings during the night, temperature-related discomfort, and breathing difficulties were reported. High altitude had no statistically significant effect on sleep duration or daytime dysfunction as measured by PSQI. CONCLUSIONS The overall results of PSQI and AIS-8 confirm the data based on the climbers' subjective accounts and polysomnographic results reported in previous studies. The introduction of standardized methods of subjective sleep quality assessment might resolve the problem of being able to perform precise evaluations and research in the field of sleep disturbances at high altitude.
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Affiliation(s)
- Robert K Szymczak
- Clinical Department of Emergency Medicine, Medical University of Gdańsk, Poland.
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Siemiński M, Jaszczuk A, Bukolt J, Nyka W. P3.184 Restless legs syndrome and depression in primary care patients. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70748-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Siemiński M, Wojcik-Draczkowska H, Nyka W. P3.185 Restless legs syndrome, sleep quality and interferon therapy in multiple sclerosis patients. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70749-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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