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24 results on '"Lauermann, Peer A."'

7. Treated Cases of Retinopathy of Prematurity in Germany

Author

Pfeil, Johanna M., Barth, Teresa, Lagrèze, Wolf A., Lorenz, Birgit, Hufendiek, Karsten, Liegl, Raffael, Breuss, Helge, Bemme, Sebastian, Aisenbrey, Sabine, Glitz, Barbara, Süsskind, Daniela, Gabel-Pfisterer, Ameli, Skevas, Christos, Krohne, Tim U., Kakkassery, Vinodh, Bründer, Marie-Christine, Engelmann, Katrin, Guthoff, Rainer, Walter, Peter, Choritz, Lars, Stahl, Andreas, Michalewicz, Emilia, Baumgarten, Sabine, Lohmann, Tibor, Walter, Peter, Breuß, Helge, Retzlaff, Annekatrin, Bödemann, Melanie, Liegl, Marian, El Moussaoui, Laila, Aisenbrey, Sabine, Saßmannshausen, Marlene, Liegl, Raffael, Engelmann, Katrin, Goldammer, Imke, Fleischer, Ulrike, Ander, Annika, Tietz, Martin, Wienigk, Anja, Li, Jeany Q., Krohne, Tim U., Guthoff, Rainer, Khamees, Ala, Kaya, Sema, Höhn, Thomas, Lohmeier, Klaus, Franzel, Julia, Busik, Valentina, Mais, Christine, Bemme, Sebastian, Khattab, Mohammed, Lauermann, Peer, Meyer, Yulia, Dieks, Jana Katharina, Bründer, Marie-Christine, Grundel, Bastian, Grundel, Milena, Paul, Sebastian, Stahl, Andreas, Tayar, Allam, Heckmann, Matthias, Bahlmann, Hagen, Linnemann, Knud, Skevas, Christos, Hagenau, Felix, Spitzer, Martin, Herden, Jonas, Gröber, Thomas, Haar, Melanie, Mester, Nils, Brockmann, Dorothee, Tode, Jan, Hufendiek, Karsten, Framme, Carsten, Bohnhorst, Bettina, Böhne, Carolin, Peter, Corinna, Pirr, Sabine, Brosig, Anton, Gniesmer, Stefanie, Grisanti, Salvatore, Lüken, Sabine, Piria, Roya, Prasuhn, Michelle, Ranjbar, Mahdy, Rommel, Felix, Schiemenz, Christian, Kakkassery, Vinodh, Heckert, Anni, Choritz, Lars, Glitz, Barbara, Eter, Nicole, Falkenau, Silvia, Gabel-Pfisterer, Ameli, Lindenberg, Ann-Sophie, Mathias, Altmann, Barth, Teresa, Benedikt, Blüml, Isabel, Oberacher-Velten, Patrick, Peters, Herbert, Jägle, Horst, Helbig, Stephan, Döring, Anette, Keller-Wackerbauer, Jochen, Kittel, Holger, Michel, Hugo, Segerer, Sven, Wellmann, Süsskind, Daniela, Partsch, Michael, Völker, Michael, and Hagemann, Ulrike

Abstract

To analyze changes in demographic parameters and retreatment patterns over a 10-year period in a clinical routine setting of infants with retinopathy of prematurity (ROP) requiring treatment documented in the German Retina.net ROP registry.

Published
2024
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8. Risk Factors for Severe Bleeding Complications in Glaucoma Surgery and the Role of Antiplatelet or Anticoagulant Agents

Author

Lauermann,Peer, Klingelhöfer,Anthea, Mielke,Dorothee, Bahlmann,Dirk, Hoerauf,Hans, Koscielny,Juergen, Sucker,Christoph, Feltgen,Nicolas, van Oterendorp,Christian, Lauermann,Peer, Klingelhöfer,Anthea, Mielke,Dorothee, Bahlmann,Dirk, Hoerauf,Hans, Koscielny,Juergen, Sucker,Christoph, Feltgen,Nicolas, and van Oterendorp,Christian

Abstract

Peer Lauermann,1 Anthea Klingelhöfer,1 Dorothee Mielke,2 Dirk Bahlmann,1 Hans Hoerauf,1 Juergen Koscielny,3 Christoph Sucker,4 Nicolas Feltgen,1 Christian van Oterendorp1 1Department of Ophthalmology, University Medical Center Goettingen, Goettingen, Germany; 2Department of Neurosurgery, University Medical Center Goettingen, Goettingen, Germany; 3Gerinnungsambulanz mit Hämophiliezentrum im Ambulanten Gesundheitszentrum (AGZ), Charité Universitätsmedizin Berlin, Berlin, Germany; 4COAGUMED Coagulation Center, Berlin, GermanyCorrespondence: Peer Lauermann, Department of Ophthalmology, University Medical Center Goettingen, Robert-Koch Str. 40, Goettingen, 37075, Germany, Email peer.lauermann@med.uni-goettingen.dePurpose: To evaluate the influences and risk factors for severe bleeding complications during glaucoma surgery, and to investigate the role of antiplatelet (AP) and anticoagulant (AC) agents.Methods: This prospective study enrolled patients undergoing trabeculectomy, trabeculotomy (with Trabectome® or Kahook Dual Blade®), viscocanaloplasty and Ahmed or Baerveldt implants. Bleeding severity was graded on an ordinal scale ranging from 0 to 5. Immediately after surgery and one day later, the incidence and severity of bleeding events was documented on a standardized form. A grade ≥ 3 was defined as severe bleeding. The influence of known systemic disorders, the type of anesthesia, surgical procedure, intraoperative blood pressure, and the use of or change in AP or AC agents on intraoperative bleeding were analyzed.Results: Data from 89 eyes undergoing glaucoma procedures were included (age 71.3y ± 10.5). We observed severe intraoperative bleeding in 8 eyes (9%) and found that concomitant diseases such as the history of a deep vein thrombosis or peripheral arterial occlusive disease, and the type of surgical procedure (trabeculectomy and viscocanaloplasty) were significantly associated with severe bleeding events. By contrast, the use of AP/ AC agents had no

Published
2022

9. Influence of the Size of the Foveal Avascular Zone on Functional and Morphological Parameters in Patients with Early-Stage Diabetic Retinopathy

Author

Storch,Marcus Werner, Zinser,Greta, Lauermann,Peer, Khattab,Mohammed Haitham, Nguyen-Höhl,Anna, Raddatz,Dirk, Gollisch,Katja, Callizo,Josep, Hoerauf,Hans, Feltgen,Nicolas, Storch,Marcus Werner, Zinser,Greta, Lauermann,Peer, Khattab,Mohammed Haitham, Nguyen-Höhl,Anna, Raddatz,Dirk, Gollisch,Katja, Callizo,Josep, Hoerauf,Hans, and Feltgen,Nicolas

Abstract

Marcus Werner Storch,1 Greta Zinser,1 Peer Lauermann,1 Mohammed Haitham Khattab,1 Anna Nguyen-Höhl,1 Dirk Raddatz,2 Katja Gollisch,2 Josep Callizo,1 Hans Hoerauf,1 Nicolas Feltgen1 1Department of Ophthalmology, University of Göttingen, Göttingen, Niedersachsen, Germany; 2Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University of Göttingen, Göttingen, Niedersachsen, GermanyCorrespondence: Marcus Werner Storch, Department of Ophthalmology, University of Göttingen, Robert-Koch-Str. 40, Göttingen, 37075, Germany, Tel +49-551-39-63580, Fax +49-551-39-63582, Email marcus.storch86@googlemail.comPurpose: To correlate functional and morphological parameters with foveal avascular zone’s (FAZ) size in diabetic patients with mild to moderate stage nonproliferative diabetic retinopathy.Methods: Monocentric and prospective study of a consecutive case series of diabetic patients. Medical history, best corrected visual acuity (BCVA), best corrected high/low contrast visual acuity (BChcVA/BClcVA), mean sensitivity (MS) and mean defect (MD) in central visual field testing, and FAZ size in fluorescein-angiography (FAG) were recorded. Macular thickness (central point thickness CPT, central subfield thickness CST) and volume measurements (central subfield volume CSV, total macular volume) were taken from SD-OCT (6x6mm ETDRS-grid). Groups were categorised as presenting FAZ sizes smaller (G1) or larger (G2) than 0.35mm2. Smallest (Q1) and largest quartiles (Q3) were also compared.Results: Thirty-six of 40 patients were included. MS differed significantly between G1 (n = 6) and G2 (n = 30), and BChcVA/BClcVA as well as TMV correlated significantly with FAZ size in correlation analysis. Mean HbA1c tended to be lower in G1 than G2. Patients in G1 were slightly older than in G2. Treatment period with insulin was shorter in G1/Q1 than in G2/Q3. CPT and TMV were lower in G1/Q1 than in G2/Q3. Our analysis of the FAZ in terms of patient age, HbA1c, disease

Published
2022

10. Influence of the Size of the Foveal Avascular Zone on Functional and Morphological Parameters in Patients with Early-Stage Diabetic Retinopathy

Author

Storch, Marcus Werner, primary, Zinser, Greta, additional, Lauermann, Peer, additional, Khattab, Mohammed Haitham, additional, Nguyen-Höhl, Anna, additional, Raddatz, Dirk, additional, Gollisch, Katja, additional, Callizo, Josep, additional, Hoerauf, Hans, additional, and Feltgen, Nicolas, additional

Published
2022
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13. Diagnosing SARS-CoV-2 with Antigen Testing, Transcription-Mediated Amplification and Real-Time PCR

Author

Dierks, Sascha, primary, Bader, Oliver, additional, Schwanbeck, Julian, additional, Groß, Uwe, additional, Weig, Michael, additional, Mese, Kemal, additional, Lugert, Raimond, additional, Bohne, Wolfgang, additional, Hahn, Andreas, additional, Feltgen, Nicolas, additional, Torkieh, Setare, additional, Denker, Fenja, additional, Lauermann, Peer, additional, Storch, Marcus, additional, Frickmann, Hagen, additional, and Zautner, Andreas, additional

Published
2021
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17. Distance-Thresholded Intercapillary Area Analysis Versus Vessel-Based Approaches to Quantify Retinal Ischemia in OCTA

Author

Lauermann, Peer, van Oterendorp, Christian, Storch, Marcus W., Khattab, Mohammed H., Feltgen, Nicolas, Hoerauf, Hans, and Bemme, Sebastian

Subjects
retina, Articles, OCT-angiography, ischemia
Abstract

Purpose: To develop and compare different analytic approaches for quantifying ischemia in OCT-angiography (OCTA), including vessel-based approaches and intercapillary area analysis. Methods: En face OCTA (6 × 6) images of the superficial plexus of 20 healthy eyes and 20 eyes with different ischemic retinal diseases were analyzed retrospectively. Included retinal diseases were diabetic retinopathy (n = 9), central (n = 5) and branch retinal vein occlusion (n = 4), hypertensive retinopathy (n = 1), and occlusive retinal vasculitis in sarcoidosis (n = 1). Vessel-based approaches consisted of the mean gray scale, perfusion density, and vessel density. Intercapillary areas (ICAs) were analyzed measuring the distance of each intercapillary pixel from the surrounding vessels. In particular, we applied a vector method to measure the shortest, the mean, and the longest distance in eight predefined directions. Size of ICAs was determined applying different global or local distance thresholds. Results: All approaches revealed significant differences between ischemic and healthy retinae (P < 0.001, with Bonferroni-Holm correction P = 0.001-0.025; Wilcoxon-Mann-Whitney test). Discrimination between the healthy and ischemic retinae based on ROC curves was best in the ICA analysis using a locally set threshold of the shortest distance. Conclusions: In the present study, ICA analysis was superior to vessel-based approaches in the quantification of retinal ischemia when defining a local or global distance threshold. Translational Relevance: In order to establish OCTA imaging in everyday clinical and scientific practice, standardized, device-independent image analysis methods are necessary. Open-Access-Publikationsfonds 2019 peerReviewed

Published
2019

19. Chronic Lung Allograft Dysfunction: Oxygen-enhanced T1-Mapping MR Imaging of the Lung

Author

Renne, Julius, primary, Lauermann, Peer, additional, Hinrichs, Jan B., additional, Schönfeld, Christian, additional, Sorrentino, Sajoscha, additional, Gutberlet, Marcel, additional, Jakob, Peter, additional, Haverich, Axel, additional, Warnecke, Gregor, additional, Welte, Tobias, additional, Wacker, Frank K., additional, Gottlieb, Jens, additional, and Vogel-Claussen, Jens, additional

Published
2015
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21. Clinical use of oxygen-enhanced T1 mapping MRI of the lung: Reproducibility and impact of closed versus loose fit oxygen delivery system.

Author

Renne, Julius, Lauermann, Peer, Hinrichs, Jan, Schönfeld, Christian, Sorrentino, Sajoscha, Gutberlet, Marcel, Jakob, Peter, Wacker, Frank, and Vogel‐Claussen, Jens

Abstract

Purpose To evaluate the reproducibility of oxygen-enhanced magnetic resonance imaging (MRI), and the influence of different gas delivery methods, in a clinical environment. Materials and Methods Twelve healthy volunteers were examined on two visits with an inversion recovery snapshot fast low angle shot sequence on a 1.5 T system. Coronal slices were obtained breathing room air as well as 100% oxygen with a flow rate of 15 L/min. For oxygen delivery a standard nontight face mask and a full closed air-cushion face mask were used. T1 relaxation times and the oxygen transfer function (OTF) were calculated. Results The mean T1 values did not change significantly between the two visits ( P > 0.05). The T1 values breathing 100% oxygen obtained using the full closed mask were significantly lower (1093 ± 38 msec; P < 0.05) compared to the standard mask (1157 ± 52 msec). Accordingly, the OTF was significantly higher for the full closed mask ( P < 0.05). The OTF changed significantly on the second visit using the standard mask ( P < 0.05). The full closed mask showed lower interindividual variation for both the T1 values (3.5% vs. 4.5%) as well as the OTF (12.4% vs. 22.0%) and no difference of the OTF on the second visit ( P > 0.05). Conclusion Oxygen-enhanced T1 mapping MRI produces reproducible data when using a full closed face mask. J. Magn. Reson. Imaging 2015;41:60-66. © 2013 Wiley Periodicals, Inc. [ABSTRACT FROM AUTHOR]

Published
2015
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