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Iqbal M, Atherton P, Macgregor C, Wieczorek A, Singer J, Walther J, Little F, Harden S, Peedell C, Cyriac A, Chowdhury S, Bayne M, Yip K, Britten A, Powell C, Brock J, Datta S, Sevitt T, Mehta A, Greystoke A. Implications for UK practice of the use of durvalumab in stage III NSCLC. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz067.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Korcyl G, Bialas P, Curceanu C, Czerwinski E, Dulski K, Flak B, Gajos A, Glowacz B, Gorgol M, Hiesmayr BC, Jasinska B, Kacprzak K, Kajetanowicz M, Kisielewska D, Kowalski P, Kozik T, Krawczyk N, Krzemien W, Kubicz E, Mohammed M, Niedzwiecki S, Pawlik-Niedzwiecka M, Palka M, Raczynski L, Rajda P, Rudy Z, Salabura P, Sharma NG, Sharma S, Shopa RY, Skurzok M, Silarski M, Strzempek P, Wieczorek A, Wislicki W, Zaleski R, Zgardzinska B, Zielinski M, Moskal P. Evaluation of Single-Chip, Real-Time Tomographic Data Processing on FPGA SoC Devices. IEEE TRANSACTIONS ON MEDICAL IMAGING 2018; 37:2526-2535. [PMID: 29994248 DOI: 10.1109/tmi.2018.2837741] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A novel approach to tomographic data processing has been developed and evaluated using the Jagiellonian positron emission tomography scanner as an example. We propose a system in which there is no need for powerful, local to the scanner processing facility, capable to reconstruct images on the fly. Instead, we introduce a field programmable gate array system-on-chip platform connected directly to data streams coming from the scanner, which can perform event building, filtering, coincidence search, and region-of-response reconstruction by the programmable logic and visualization by the integrated processors. The platform significantly reduces data volume converting raw data to a list-mode representation, while generating visualization on the fly.
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Morgenstern DA, Pötschger U, Moreno L, Papadakis V, Owens C, Ash S, Pasqualini C, Luksch R, Garaventa A, Canete A, Elliot M, Wieczorek A, Laureys G, Kogner P, Malis J, Ruud E, Beck-Popovic M, Schleiermacher G, Valteau-Couanet D, Ladenstein R. Risk stratification of high-risk metastatic neuroblastoma: A report from the HR-NBL-1/SIOPEN study. Pediatr Blood Cancer 2018; 65:e27363. [PMID: 30015396 DOI: 10.1002/pbc.27363] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/18/2018] [Accepted: 06/23/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND Risk stratification is crucial to treatment decision-making in neuroblastoma. This study aimed to explore factors present at diagnosis affecting outcome in patients aged ≥18 months with metastatic neuroblastoma and to develop a simple risk score for prognostication. PROCEDURE Data were derived from the European high-risk neuroblastoma 1 (HR-NBL1)/International Society for Paediatric Oncology European Neuroblastoma (SIOPEN) trial with analysis restricted to patients aged ≥18 months with metastatic disease and treated prior to the introduction of immunotherapy. Primary endpoint was 5-year event-free survival (EFS). Prognostic factors assessed were sex, age, tumour MYCN amplification (MNA) status, serum lactate dehydrogenase (LDH)/ferritin, primary tumour and metastatic sites. Factors significant in univariate analysis were incorporated into a multi-variable model and an additive scoring system developed based on estimated log-cumulative hazard ratios. RESULTS The cohort included 1053 patients with median follow-up 5.5 years and EFS 27 ± 1%. In univariate analyses, age; serum LDH and ferritin; involvement of bone marrow, bone, liver or lung; and >1 metastatic system/compartment were associated with worse EFS. Tumour MNA was not associated with worse EFS. A multi-variable model and risk score incorporating age (>5 years, 2 points), serum LDH (>1250 U/L, 1 point) and number of metastatic systems (>1, 2 points) were developed. EFS was significantly correlated with risk score: EFS 52 ± 9% for score = 0 versus 6 ± 3% for score = 5 (P < 0.0001). CONCLUSIONS A simple score can identify an "ultra-high risk" (UHR) cohort (score = 5) comprising 8% of patients with 5-year EFS <10%. These patients appear not to benefit from induction therapy and could potentially be directed earlier to alternative experimental therapies in future trials.
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Braun EM, Wieczorek A, Stotz L, Hamza A, Solomayer EH, Radosa CG, Radosa MP, Radosa JC. Nahtdehiszenz nach totaler laparoskopischer Hysterektomie – Inzidenz und Risikofaktoren. Geburtshilfe Frauenheilkd 2017. [DOI: 10.1055/s-0037-1606163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Raczyński L, Wiślicki W, Krzemień W, Kowalski P, Alfs D, Bednarski T, Białas P, Curceanu C, Czerwiński E, Dulski K, Gajos A, Głowacz B, Gorgol M, Hiesmayr B, Jasińska B, Kamińska D, Korcyl G, Kozik T, Krawczyk N, Kubicz E, Mohammed M, Pawlik-Niedźwiecka M, Niedźwiecki S, Pałka M, Rudy Z, Rundel O, Sharma NG, Silarski M, Smyrski J, Strzelecki A, Wieczorek A, Zgardzińska B, Zieliński M, Moskal P. Calculation of the time resolution of the J-PET tomograph using kernel density estimation. Phys Med Biol 2017; 62:5076-5097. [DOI: 10.1088/1361-6560/aa7005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bushuven E, Wieczorek A, Stotz L, Hamza A, Juhasz-Böss I, Papaioannou C, Solomayer EF, Radosa MP, Radosa JC. Nahtdehiszenz nach totaler laparoskopischer Hysterektomie – Inzidenz und Risikofaktoren. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1593130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Zielinski M, Alfs D, Bednarski T, Białas P, Czerwiński E, Gajos A, Głowacz B, Gorgol M, Jasińska B, Kamińska D, Korcyl G, Kowalski P, Kozik T, Krzemień W, Kubicz E, Mohammed M, Pawlik-Niedźwiecka M, Niedźwiecki S, Pałka M, Raczyński L, Rudy Z, Rundel O, Sharma N, Silarski M, Strzelecki A, Wieczorek A, Wiślicki W, Zieliński M, Zgardzińska B, Moskal P. Mobile PET insert for simultaneous PET/MRI imaging. Phys Med 2016. [DOI: 10.1016/j.ejmp.2016.07.477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Wieczorek A, Matusiak L, Szepietowski JC. Acquired Perforating Dermatosis Associated With End-stage Diabetic Kidney Failure in a Hemodialysis Patient. IRANIAN JOURNAL OF KIDNEY DISEASES 2016; 10:164-167. [PMID: 27225725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 04/06/2016] [Indexed: 06/05/2023]
Abstract
Acquired perforating dermatosis (APD) is an uncommon skin disorder seen in majority among patients with chronic kidney disease and also in those with diabetes mellitus. We present the clinicopathological features of APD in a 65-year-old patient with diabetes mellitus and end-stage kidney disease on hemodialysis and review the recent advances in the management of APD, as well as the mechanisms of transepidermal elimination of perforating dermatoses.
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Moskal P, Rundel O, Alfs D, Bednarski T, Białas P, Czerwiński E, Gajos A, Giergiel K, Gorgol M, Jasińska B, Kamińska D, Kapłon Ł, Korcyl G, Kowalski P, Kozik T, Krzemień W, Kubicz E, Niedźwiecki S, Pałka M, Raczyński L, Rudy Z, Sharma NG, Słomski A, Silarski M, Strzelecki A, Wieczorek A, Wiślicki W, Witkowski P, Zieliński M, Zoń N. Time resolution of the plastic scintillator strips with matrix photomultiplier readout for J-PET tomograph. Phys Med Biol 2016; 61:2025-47. [PMID: 26895187 DOI: 10.1088/0031-9155/61/5/2025] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Recent tests of a single module of the Jagiellonian Positron Emission Tomography system (J-PET) consisting of 30 cm long plastic scintillator strips have proven its applicability for the detection of annihilation quanta (0.511 MeV) with a coincidence resolving time (CRT) of 0.266 ns. The achieved resolution is almost by a factor of two better with respect to the current TOF-PET detectors and it can still be improved since, as it is shown in this article, the intrinsic limit of time resolution for the determination of time of the interaction of 0.511 MeV gamma quanta in plastic scintillators is much lower. As the major point of the article, a method allowing to record timestamps of several photons, at two ends of the scintillator strip, by means of matrix of silicon photomultipliers (SiPM) is introduced. As a result of simulations, conducted with the number of SiPM varying from 4 to 42, it is shown that the improvement of timing resolution saturates with the growing number of photomultipliers, and that the [Formula: see text] configuration at two ends allowing to read twenty timestamps, constitutes an optimal solution. The conducted simulations accounted for the emission time distribution, photon transport and absorption inside the scintillator, as well as quantum efficiency and transit time spread of photosensors, and were checked based on the experimental results. Application of the [Formula: see text] matrix of SiPM allows for achieving the coincidence resolving time in positron emission tomography of [Formula: see text]0.170 ns for 15 cm axial field-of-view (AFOV) and [Formula: see text]0.365 ns for 100 cm AFOV. The results open perspectives for construction of a cost-effective TOF-PET scanner with significantly better TOF resolution and larger AFOV with respect to the current TOF-PET modalities.
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Skoczen S, Tomasik PJ, Fijorek K, Strojny W, Wieczorek A, Balwierz W, Sztefko K, Siedlar M. Concentrations of adipokines in children before and after hematopoietic stem cell transplantation. Pediatr Hematol Oncol 2016; 33:21-38. [PMID: 26901378 DOI: 10.3109/08880018.2015.1135362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Adipokines have multiple effects, including regulation of glucose metabolism, cell proliferation, inflammation, and angiogenesis. The aim of the study was to determine plasma concentrations of adiponectin, apelin, leptin, and resistin as well as soluble leptin receptor in pediatric hematopoietic stem cell transplantation (HSCT). The expression of genes encoding the studied peptides was measured using microarray technique. Plasma concentrations of tested peptides were measured before and after oral glucose tolerance test in children treated with HSCT (n = 38) and in healthy controls (n = 26). The peptides were measured before HSCT (pre-HSCT group; n = 38) and after a median of 6 months after HSCT (post-HSCT group; n = 27 of 38 children treated with HSCT). In addition, measurements of fasting plasma glucose, insulin, lipids, and high-sensitivity C-reactive protein (hsCRP) were performed. In both HSCT groups, atherogenic lipid profile, low-grade systemic inflammation was observed. Leptin, adiponectin, and resistin also appear to be good markers of disease burden and low-grade systemic inflammation. Adipokines may be good markers of disease burden and may influence metabolic complications of HSCT. Future studies on larger groups of patients will explain if changes of the concentrations of leptin, adiponectin, and apelin observed in our study and confirmed by expression levels influence engraftment and reconstitution of cell lines.
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Głowacz B, Zieliński M, Alfs D, Bednarski T, Białas P, Czerwiński E, Gajos A, Gorgol M, Jasińska B, Kamińska D, Kapłon Ł, Korcyl G, Kowalski P, Kozik T, Krzemień W, Kubicz E, Mohammed M, Pawlik-Niedźwiecka M, Niedźwiecki S, Pałka M, Raczyński L, Rudy Z, Rundel O, Sharma N, Silarski M, Słomski A, Strzelecki A, Wieczorek A, Wiślicki W, Zgardzińska B, Moskal P. Hybrid TOF-PET/MRI local transceiver coil. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30097-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Zieliński M, Głowacz B, Alfs D, Bednarski T, Białas P, Czerwiński E, Gajos A, Gorgol M, Jasińska B, Kamińska D, Kapłon Ł, Korcyl G, Kowalski P, Kozik T, Krzemień W, Kubicz E, Mohammed M, Pawlik-Niedźwiecka M, Niedźwiecki S, Pałka M, Raczyński L, Rudy Z, Rundel O, Sharma N, Silarski M, Słomski A, Strzelecki A, Wieczorek A, Wiślicki W, Zgardzińska B, Moskal P. The mobile PET insert for simultaneous PET/MRI imaging. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30242-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Krzemień W, Alfs D, Bednarski T, Białas P, Czerwiński E, Gajos A, Głowacz B, Gorgol M, Jasińska B, Kamińska D, Kapłon Ł, Korcyl G, Kowalski P, Kozik T, Kubicz E, Mohammed M, Niedźwiecki S, Pałka M, Raczyński L, Rudy Z, Rundel O, Sharma N, Silarski M, Słomski A, Strzelecki A, Wieczorek A, Wiślicki W, Zgardzińska B, Zieliński M, Moskal P. Front-end electronics and hit position reconstruction methods for the J-PET scanner. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30129-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Moskal P, Alfs D, Bednarski T, Białas P, Curceanu C, Czerwiński E, Dulski K, Gajos A, Głowacz B, Gupta-Sharma N, Gorgol M, Hiesmayr BC, Jasińska B, Kamińska D, Khreptak O, Korcyl G, Kowalski P, Krzemień W, Krawczyk N, Kubicz E, Mohammed M, Niedźwiecki S, Pawlik-Niedńwiecka M, Raczyński L, Rudy Z, Silarski M, Smyrski J, Wieczorek A, Wiślicki W, Zgardzińska B, Zieliński M. Studies of discrete symmetries in a purely leptonic system using the Jagiellonian Positron Emission Tomograph. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201613007015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pawlik-Niedźwiecka M, Khreptak O, Gajos A, Wieczorek A, Alfs D, Bednarski T, Białas P, Curceanu C, Czerwiński E, Dulski K, Głowacz B, Gupta-Sharma N, Gorgol M, Hiesmayr BC, Jasińska B, Kamińska D, Korcyl G, Kowalski P, Krzmień W, Krawczyk N, Kubicz E, Mohammed M, Niedźwiecki S, Raczyński L, Rudy Z, Silarski M, Wiślicki W, Zgardzińska B, Zieliński M, Moskal P. J-PET detector system for studies of the electron-positron annihilations. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201613007020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kamińska D, Gajos A, Czerwiński E, Alfs D, Bednarski T, Białas P, Curceanu C, Dulski K, Głowacz B, Gupta-Sharma N, Gorgol M, Hiesmayr BC, Jasińska B, Korcyl G, Kowalski P, Krzemień W, Krawczyk N, Kubicz E, Mohammed M, Niedźwiecki S, Pawlik-Niedźwiecka M, Raczyński L, Rudy Z, Silarski M, Wieczorek A, Wiślicki W, Zgardzińska B, Zieliński M, Moskal P. A feasibility study of ortho-positronium decays measurement with the J-PET scanner based on plastic scintillators. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2016; 76:445. [PMID: 27547122 PMCID: PMC4978780 DOI: 10.1140/epjc/s10052-016-4294-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 08/01/2016] [Indexed: 05/13/2023]
Abstract
We present a study of the application of the Jagiellonian positron emission tomograph (J-PET) for the registration of gamma quanta from decays of ortho-positronium (o-Ps). The J-PET is the first positron emission tomography scanner based on organic scintillators in contrast to all current PET scanners based on inorganic crystals. Monte Carlo simulations show that the J-PET as an axially symmetric and high acceptance scanner can be used as a multi-purpose detector well suited to pursue research including e.g. tests of discrete symmetries in decays of ortho-positronium in addition to the medical imaging. The gamma quanta originating from o-Ps decay interact in the plastic scintillators predominantly via the Compton effect, making the direct measurement of their energy impossible. Nevertheless, it is shown in this paper that the J-PET scanner will enable studies of the [Formula: see text] decays with angular and energy resolution equal to [Formula: see text] and [Formula: see text], respectively. An order of magnitude shorter decay time of signals from plastic scintillators with respect to the inorganic crystals results not only in better timing properties crucial for the reduction of physical and instrumental background, but also suppresses significantly the pile-ups, thus enabling compensation of the lower efficiency of the plastic scintillators by performing measurements with higher positron source activities.
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Zawada T, Wieczorek A, Garba P. Point of care ultrasound - the noninvasive evaluation of hemodynamic status. Intensive Care Med Exp 2015. [PMCID: PMC4797846 DOI: 10.1186/2197-425x-3-s1-a543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Zawada T, Bartczak J, Kozak M, Wieczorek A, Garba P. The usefulness of non-directed bronchoalveolar lavage in diagnosis pneumonia in ICU. Intensive Care Med Exp 2015. [PMCID: PMC4796244 DOI: 10.1186/2197-425x-3-s1-a711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Zawada T, Wieczorek A, Garba P. Point of care ultrasound - a way to reduce radiation exposure of patients and medical staff. Intensive Care Med Exp 2015. [PMCID: PMC4797692 DOI: 10.1186/2197-425x-3-s1-a273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Abstract
Id (DNA binding and/or differentiation) proteins occur physiologically during ontogenesis and negatively regulate the activity of other helix-loop-helix (HLH) proteins. Id2 protein causes block of cells differentiation in the S phase of the cell cycle and regulates the activity of Rb protein. The role of Id2 protein in physiological cell cycle progression and in neuroblastoma (NBL) pathogenesis was proposed by Lasorella. The aim of the study was evaluation of Id2 expression and its prognostic significance in NBL cells coming from primary tumors and evaluation of its prognostic significance, and correlation of Id2 expression with known prognostic factors. Sixty patients with primary NBL treated from 1991 to 2005 were included in the analysis. We found 50 patients with high and 10 patients with low intensity of Id2 expression. The median percentage of NBL cells with Id2 expression was 88 %. We found no correlation between the number of NBL cells or the intensity of Id2 expression and OS and DFS. In patients with stage 4 NBL, almost all patients had high expression of Id2 and it was significantly more common than in other disease stages (p = 0,03). We found no correlation between Id2 expression and other known prognostic factor in NBL patients. We assume that Id2 is not prognostic factor. However, due to its abundant expression in most of NBL cells and its role in cell cycle, it may be potential therapeutic target. Exact knowledge of expression time may be helpful in explaining mechanisms of oncogenesis.
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Tambe N, Colley W, Marsden J, Beavis A, Wieczorek A, El-Mahdawi N. 132: Implementation of stereotactic ablative body radiotherapy (SABR) for early stage medically inoperable lung cancer: an experience from a medium size clinical centre. Lung Cancer 2015. [DOI: 10.1016/s0169-5002(15)50126-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wieczorek A, Krasomski G. Twin pregnancy as the risk factor for neonatal intraventricular hemorrhage. Ginekol Pol 2015; 86:137-42. [DOI: 10.17772/gp/2001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Dzierzega M, Ossowska M, Chmiel D, Wieczorek A, Balwierz W. The malposition of central venous catheters in children. Pol J Radiol 2014; 79:275-8. [PMID: 25177409 PMCID: PMC4148418 DOI: 10.12659/pjr.890408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 02/28/2014] [Indexed: 11/09/2022] Open
Abstract
Background Contemporary medical care, especially in the field of pediatrics often requires central venous line (CVC – Central Venous Catheter) implantation for carrying out treatment. Some conditions are treated intravenously for several months, other require long-term venous access due to periodical administration of medications or daily nutritional supplementation. Material/Methods A total number of 309 CVCs were implanted at Children’s University Hospital in Cracow between January 2011 and December 2012 (24 months). Malposition of the CVC is not common. The target of our article was to present two rare cases of malposition of catheters and two displacements of catheter due to chest tumors, and to enhance the importance of differential diagnostic imaging when difficulties occur. Results CVC malposition was detected with different imaging modalities followed by appropriate medical procedures. Conclusions In case of any difficulties with central lines, it is necessary to investigate the underlying cause. The central line team at hospital cooperating with other specialists is needed to detect complications and to prevent them.
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Sliwowski R, Andrzejewski M, Wieczorek A, Barinow-Wojewódzki A, Jadczak L, Adrian S, Pietrzak M, Wieczorek S. Changes in the anaerobic threshold in an annual cycle of sport training of young soccer players. Biol Sport 2013; 30:137-43. [PMID: 24744480 PMCID: PMC3944579 DOI: 10.5604/20831862.1044459] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2012] [Indexed: 11/17/2022] Open
Abstract
The aim of the study was to assess changes in the anaerobic threshold of young soccer players in an annual training cycle. A group of highly trained 15-18 year old players of KKS Lech Poznań were tested. The tests included an annual training macrocycle, and its individual stages resulted from the time structure of the sports training. In order to assess the level of exercise capacities of the players, a field exercise test of increasing intensity was carried out on a soccer pitch. The test made it possible to determine the 4 millimolar lactate threshold (T LA 4 mmol · l-1) on the basis of the lactate concentration in blood [LA], to establish the threshold running speed and the threshold heart rate [HR]. The threshold running speed at the level of the 4 millimolar lactate threshold was established using the two-point form of the equation of a straight line. The obtained indicators of the threshold running speed allowed for precise establishment of effort intensity used in individual training in developing aerobic endurance. In order to test the significance of differences in mean values between four dates of tests, a non-parametric Friedman ANOVA test was used. The significance of differences between consecutive dates of tests was determined using a post-hoc Friedman ANOVA test. The tests showed significant differences in values of selected indicators determined at the anaerobic threshold in various stages of an annual training cycle of young soccer players. The most beneficial changes in terms of the threshold running speed were noted on the fourth date of tests, when the participants had the highest values of 4.01 m · s-1 for older juniors, and 3.80 m · s-1 for younger juniors. This may be indicative of effective application of an individualized programme of training loads and of good preparation of teams for competition in terms of players’ aerobic endurance.
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Schäfer M, Bonnet U, Herrmann D, Hoch E, Schröder W, Reymann G, Veltrup C, Wessel B, Wieczorek A, Wodarz N. Von den Spielarten klinischer Praxis zur Evidenz – Pharmakologische Strategien im Alkoholentzug. SUCHTTHERAPIE 2012. [DOI: 10.1055/s-0032-1330977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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