Christoph Langer

FH Aachen

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Dieter Horstkotte

Hopital Universitaire Hedi Chaker

Thomas Butz

Evangelisches Krankenhaus Oberhausen

Marcus Wiemer

Johannes Wesling Klinikum Minden

Lothar Faber

Lukaskrankenhaus

Olaf Oldenburg

Clemenshospital Münster

Thomas Bitter

Jena University Hospital

R. Reifarth

Los Alamos National Laboratory

Norbert Frey

German Centre for Cardiovascular Research

K. Göbel

Goethe University Frankfurt

Cornelia Piper

Heart and Diabetes Center North Rhine-Westphalia

Cooperative Institutions

GSI Helmholtz Centre for Heavy Ion Research

166

Technical University of Darmstadt

107

Goethe University Frankfurt

Centre National de la Recherche Scientifique

Ruhr University Bochum

Heart and Diabetes Center North Rhine-Westphalia

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

University of Warsaw

Universidade de Santiago de Compostela

National Centre for Nuclear Research

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Arterial Accesses in Coronary Angiography and Intervention—Review with a Focus on Prognostic Relevance

Reviews in Cardiovascular Medicine (2022)

Christoph Langer Rostislav Prog

Arterial access in coronary angiography has always been an important issue. Convincing prognostic data from large randomized controlled trials (RCTs) in the first place but also safe performance of same-day-discharge after diagnostic and interventional procedures, improved patient comfort and cost-effectiveness led to a paradigm shift from the transfemoral approach (TFA) to the transradial approach (TRA) in several clinical situations. Consequently, today's relevant guidelines recommend a radial-first strategy as default approach. However, there is still strong controversy among interventional cardiologists resulting in delayed spread of the TRA causing significant regional differences. One major critics point is the rate of postprocedural radial artery occlusion (RAO) after using the traditional puncture site at the proximal radial artery (pTRA) which was registered too high in certain centers. A new access using the distal radial artery (dTRA) in the area of the snuff box (SB) and the dorsal box (DB) has been proven to minimize RAO and enabling even complex interventions using 7F guiding catheters. Although, dTRA seems to be an advantageous option, this approach is still not widely used. This review—addressed to beginners and even advanced interventionalists—presents all arterial access routes in interventional cardiology. It focusses on those to be routinely preferred and also on the possibility to guide the puncture with ultrasound. Thereby, the various approaches, including the transulnar (TRU) but also the still relevant TFA approach, are discussed in detail. Thereby, we introduce our philosophy of "radial freedom" and a new classification for TRA.

Intravascular Ultrasound

Interventional cardiology

10.31083/j.rcm2310331

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Cardiac volumetry in patients with heart failure and reduced ejection fraction: a comparative study correlating multi-slice computed tomography and magnetic resonance tomography. Reasons for intermodal disagreement

Clinical Research in Cardiology (2009)

Janina Schroeder Andreas Peterschroeder Bernhard Vaske Thomas Butz P. G. Barth

Cardiac magnetic resonance

10.1007/s00392-009-0074-5

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Citations (16)

Right atrial hemangioma in modern cardiac imaging

Clinical Research in Cardiology (2006)

Christoph Langer Jan Körfer Andreas Peterschröder Lothar Faber Philipp Beerbaum

Cardiac Imaging

10.1007/s00392-006-0404-9

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Citations (3)

Neutron-induced cross sections

The European Physical Journal Plus (2018)

R. Reifarth P. Erbacher Stefan Fiebiger K. Göbel T. Heftrich

Nuclear astrophysics

Nuclear data

10.1140/epjp/i2018-12295-3

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Sleep Disordered Breathing in Patients with Atrial Fibrillation and Normal Systolic Left Ventricular Function

Deutsches Ärzteblatt international (2009)

Thomas Bitter Christoph Langer Jürgen Vogt Mathias Lange Dieter Horstkotte

Obstructive sleep apnea (OSA) is more common in patients with atrial fibrillation (AFib). Recently, an additional association between central sleep apnea/Cheyne-Stokes respiration (CSA/CSR) and AFib has been described. The aim of this study was to investigate the prevalence and type of sleep-disordered breathing in patients with AFib and normal systolic left ventricular function.150 patients (110 men and 40 women, aged 66.1 +/- 1.7 years) underwent cardiorespiratory polygraphy, capillary blood gas analysis, measurement of NT-proBNP, and echocardiography to determine the diameter of the left atrium (LAD) and the peak systolic pulmonary artery pressure (PAP).Sleep-disordered breathing was documented in 74% of all patients with AFib (43% had OSA and 31% had CSA/CSR). Patients with CSA/CSR had a higher PAP, a higher apnea-hypopnea index, a greater LAD, and a lower capillary blood pCO(2) than patients with OSA.Patients with AFib were found to have not only a high prevalence of obstructive sleep apnea, as has been described previously, but also a high prevalence of CSA/CSR. It remains unknown whether CSA/CSR is more common in AFib because of diastolic dysfunction or whether phenomena associated with CSA/CSR predispose to AFib. Further research on this question is needed.

Cheyne–Stokes respiration

Central sleep apnea

10.3238/arztebl.2009.0164

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Low night-to-night variability of sleep disordered breathing in patients with stable congestive heart failure

Clinical Research in Cardiology (2008)

Olaf Oldenburg Barbara Lamp Klaus Freivogel Thomas Bitter Christoph Langer

Sleep-Disordered Breathing

Sleep study

10.1007/s00392-008-0695-0

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Citations (29)

Detection of a Type 1 Brugada ECG by ECG Recording at a Higher Intercostal Space of Leads V1 and V2

Herz (2010)

Thomas Butz Jürgen Vogt Christian Vielhauer Ulrike Wetzel Christoph Langer

Intercostal space

10.1007/s00059-010-3315-5

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Elite athletes with mitral or aortic regurgitation and their cardiopulmonary capability

Acta Cardiologica (2013)

Christoph Langer Thomas Butz Klaus‐Peter Mellwig Emanoel Oepangat Andreas Fruend

Background Aortic or mitral valvular regurgitation (left cardiac valvular regurgitation, LCVR) of less than second-degree (<°II) occasionally found in competitive athletes is of questionable relevance. Precisely detectable by echocardiography there is scarce published data that clarifi es cardiopulmonary capacity or any limitations LCVR <°II may cause.Methods In this single-centre study we consecutively recruited highly trained athletes (n = 14) with LCVR <°II detected in 2D echo. Not included were athletes with multi-or right-cardiac valvular dysfunction and structural heart disease other than bicuspid aortic valve or mitral valve prolaps. Target parameters were determined by 2D echo and spiroergometry.Results There were no signifi cant diff erences with regard to age and body mass index. Echocardiographically determined muscle mass index was increased in both groups (134 ± 14.7 vs 129.6 ± 27.5; P= 0.69), whereas the left-ventricular end-diastolic diameter index was signifi cant higher in the LCVR <°II group (27.3 ± 1.3 vs 25.2 ± 2.4; P= 0.04). However, there were no signifi cant diff erences with regard to (oxygen uptake) VO2 at baseline (athletes with LCVR <°II 5.7 ± 0.9 vs controls 5 ± 0.96, P= 0.06), at the anaerobic threshold (athletes with LCVR <°II 47.3 ± 8.4 vs controls 47.4 ± 5, P= 0.97) and maximally (VO2max; athletes with LCVR <°II 57.7 ± 6.3 vs controls 57.1 ± 5.1, P= 0.81). Neither levels of lactate nor of brain natriuretic peptide diff ered significantly.Conclusion High level athletes presenting with aortic or mitral regurgitation <°II in are not disadvantaged with regard to their cardiopulmonary capability.

Elite Athletes

10.1080/ac.68.5.2994470

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Citations (6)

A new 55Ni(p,g) rate and its implications on the rp-process

Bulletin of the American Physical Society (2016)

Wei Jia Ong Christoph Langer F. Montes

Source

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Introduction to Causal Fermion Systems

arXiv (Cornell University) (2021)

Christoph Langer

This paper is dedicated to give a concise introduction to the theory of causal fermion systems. After putting the theory of causal fermion systems into the historical context, we recall fundamental physical preliminaries. Afterwards, we enter the underlying ideas of the principle of the fermionic projector and clarify its connection to causal fermion systems. We finally outline the main structures of the theory of causal fermion systems.

10.48550/arxiv.2111.07405

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