Research Topics
| H OmranSummaryAffiliation: University of Bonn Country: Germany Publications
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Detail Information
Publications
A prospective and randomized comparison of the safety and effects of therapeutic levels of enoxaparin versus unfractionated heparin in chronically anticoagulated patients undergoing elective cardiac catheterizationHeyder Omran
Department of Medicine Cardiology, University of Bonn, Sigmund Freud Strasse 25, 53105 Bonn, Germany
Thromb Haemost 90:267-71. 2003....- Mechanical occlusion of the left atrial appendageHeyder Omran
Department of Medicine Cardiology, University of Bonn, Bonn, Germany
J Cardiovasc Electrophysiol 14:S56-9. 2003..The aim of this prospective study was to assess the feasibility, safety, and technical aspects of interventionally occluding the left atrial appendage... - Incidence of left atrial thrombi in patients in sinus rhythm and with a recent neurologic deficitH Omran
Department of Medicine Cardiology, University of Bonn, Germany
Am Heart J 140:658-62. 2000..We sought to determine the incidence of left atrial (LA) thrombi in patients in sinus rhythm (SR) and with a recent neurologic deficit and to analyze the relation between LA thrombi and LA chamber and appendage function in patients in SR... - Silent and apparent cerebral embolism after retrograde catheterisation of the aortic valve in valvular stenosis: a prospective, randomised studyHeyder Omran
Department of Medicine Cardiology, University of Bonn, Bonn, Germany
Lancet 361:1241-6. 2003..This procedure has a potential risk of neurological complications, with an unknown incidence of clinically silent embolism. We aimed to establish the frequency of clinically apparent and silent cerebral embolism after this procedure... - D-Ribose improves diastolic function and quality of life in congestive heart failure patients: a prospective feasibility studyHeyder Omran
Department of Medicine Cardiology, University of Bonn, Sigmund Freud Street 25, D 53105, Bonn, Germany
Eur J Heart Fail 5:615-9. 2003..This feasibility study in patients with coronary artery disease in CHF revealed the beneficial effects of D-ribose by improving diastolic functional parameters and enhancing quality of life... - Transverse conduction capabilities of the crista terminalis in patients with atrial flutter and atrial fibrillationB Schumacher
Department of Cardiology, University of Bonn, Germany
J Am Coll Cardiol 34:363-73. 1999..In this study, the transverse conduction capabilities of the crista terminalis (CT) were determined during pacing in sinus rhythm in patients with atrial flutter and atrial fibrillation... - The impact of emission power on the destruction of echo contrast agents and on the origin of tissue harmonic signals using power pulse-inversion imagingK Tiemann
Department of Cardiology, University of Bonn, Sigmund Freud Strassse 25, 53105 Bonn, Germany
Ultrasound Med Biol 27:1525-33. 2001..However, bubble destruction and the onset of tissue harmonic signals focus the use of real-time perfusion imaging to very low emission power... - Prevalence of left atrial chamber and appendage thrombi in patients with atrial flutter and its clinical significanceH Schmidt
Department of Medicine-Cardiology, University of Bonn, Bonn, Germany
J Am Coll Cardiol 38:778-84. 2001..In addition, the presence of clinical risk factors should alert the physician to an increased likelihood for a thrombogenic milieu... - Subendocardial steal effect seen with real-time perfusion imaging at low emission power during adenosine stress: replenishment M-mode processing allows visualization of vertical stealK Tiemann
Department of Cardiology, University of Bonn, Sigmund Freud Str 25, 53105 Bonn, Germany
Echocardiography 18:689-94. 2001..The defect was best appreciated with M-mode postprocessing of power pulse inversion imaging data... - Clinical experience with implantable atrial and combined atrioventricular defibrillatorsW Jung
Departments of Medicine Cardiology, University of Bonn, Germany
J Interv Card Electrophysiol 4:185-95. 2000..The combined atrioventricular defibrillator may be particularly indicated in patients presenting with both a history of atrial and ventricular tachyarrhythmias... - Atrial fibrillation: relation between clinical risk factors and transoesophageal echocardiographic risk factors for thromboembolismS Illien
Department of Medicine-Cardiology, University of Bonn, Bonn, Germany
Heart 89:165-8. 2003..In addition, TOE examination allows for the identification of patients with a thrombogenic milieu without clinical risk factors... - Atrial fibrillation - patients at high risk for cerebral embolismP Bernhardt
Department of Medicine Cardiology, University of Bonn, Germany
Clin Res Cardiol 95:148-53. 2006..The aims of our study were to assess prognosis of patients with AF and determine a high risk group with an increased risk of cerebral embolism under oral anticoagulation... - [Biventricular thrombi dissolution and antibody development with lepirudin therapy]D Skowasch
Medizinische Klinik und Poliklinik II, Universitatsklinikum Bonn
Dtsch Med Wochenschr 128:1531-4. 2003..A 50-year-old patient presented with clinical symptoms of heart failure with orthopnoe and edema (NYHA IV)... - [Transthoracic echocardiography in endocarditis: a comparison of conventional and harmonic echocardiography]R Schimpf
Medizinische Klinik und Poliklinik II, Rheinischen Friedrich Wilhelms Universität Bonn
Dtsch Med Wochenschr 125:1065-8. 2000..This prospective study was undertaken to compare the value of harmonic and conventional transthoracic echocardiography in endocarditis and compare them with standard transoesophageal echocardiography (TOE) and operative findings... - Local intra-arterial thrombolysis in the carotid territory: does recanalization depend on the thromboembolus type?H Urbach
Department of Radiology Neuroradiology, University of Bonn, Sigmund Freud Strasse 25, 53105 Bonn, Germany
Neuroradiology 44:695-9. 2002..The fact that thromboembolic occlusions originating from cardiac thrombi had a lower likelihood of being resolved by thrombolysis indicates the thromboembolus type as another parameter affecting recanalization... - [Stress cine MRI for detection of coronary artery disease]T Sommer
Radiologische Universitätsklinik Bonn, Germany
Rofo 174:605-13. 2002..Currently, stress MRI is already a realistic clinical alternative for the non-invasive assessment of CAD in patients with impaired image quality in echocardiography... - [Submillimeter 3D coronary MR angiography with real-time navigator correction in 107 patients with suspected coronary artery disease]T Sommer
Radiologische Universitätsklinik Bonn
Rofo 174:459-66. 2002..To evaluate the clinical value of high-resolution coronary MR angiography (coronary MRA) in a large group of patients with suspected coronary artery disease... - Serum levels and cardiovascular effects of tricyclic antidepressants and selective serotonin reuptake inhibitors in depressed patientsB Rodriguez de la Torre
Departments of Psychiatry and Psychotherapy, University of Bonn, Germany
Ther Drug Monit 23:435-40. 2001.... - Continuous-infusion contrast-enhanced US: in vitro studies of infusion techniques with different contrast agentsS Kuntz-Hehner
Department of Cardiology, University of Bonn, Sigmund-Freud-Strasse 25, 53105 Bonn, Germany
Radiology 220:647-54. 2001..Because of the special physical properties of FS069, only homogenization produced constant harmonic power Doppler US signals during continuous infusion of this agent... - Patients at high risk with atrial fibrillation: a prospective and serial follow-up during 12 months with transesophageal echocardiography and cerebral magnetic resonance imagingPeter Bernhardt
Department of Medicine Cardiology, University of Bonn, Bonn, Germany
J Am Soc Echocardiogr 18:919-24. 2005..Our aims were to assess the prognosis of patients with atrial fibrillation and determine a high-risk group with an increased risk of cerebral embolism under oral anticoagulation... - Post mortem analysis of a left atrial appendage occlusion device (PLAATO) in a patient with permanent atrial fibrillationHeyder Omran
Innere Abteilung, St Marien Hospital Bonn, Robert Koch Str 1, 53115, Bonn, Germany
J Interv Card Electrophysiol 14:17-20. 2005..The paper reports of a post mortem analysis of the device demonstrating that one year after implantation the atrial surface of the device is completely covered by neo-endothelium and the device occludes the appendage completely... - Atrial thrombi-a prospective follow-up study over 3 years with transesophageal echocardiography and cranial magnetic resonance imagingPeter Bernhardt
Department of Medicine Cardiology, University of Bonn, Bonn, Germany
Echocardiography 23:388-94. 2006..However, there is little knowledge about the long-term fate of atrial thrombi and the incidence of cerebral embolism in patients under oral anticoagulation... - Periprocedural bridging therapy with low-molecular-weight heparin in chronically anticoagulated patients with prosthetic mechanical heart valves: experience in 116 patients from the prospective BRAVE registryChristoph Hammerstingl
St Marien Hospital Bonn Venusberg, Bonn, Germany
J Heart Valve Dis 16:285-92. 2007..BACKGROUND AND AIM of the study: The study aim was to determine the safety and feasibility of a standardized bridging regimen in patients with mechanical heart valves at high thromboembolic risk, using low-molecular-weight heparin (LMWH)... - Percutaneous left atrial appendage transcatheter occlusion (PLAATO system) to prevent stroke in high-risk patients with non-rheumatic atrial fibrillation: results from the international multi-center feasibility trialsStefan H Ostermayer
CardioVascular Center Frankfurt, Sankt Katharinen, Frankfurt, Germany
J Am Coll Cardiol 46:9-14. 2005..CONCLUSIONS: Closing the LAA using the PLAATO system is feasible and can be performed at acceptable risk. It may become an alternative in patients with AF and a contraindication for lifelong anticoagulation treatment... - Incidence of cerebral embolism after cardioversion of atrial fibrillation: a prospective study with transesophageal echocardiography and cerebral magnetic resonance imagingPeter Bernhardt
Department of Medicine Cardiology, University of Bonn, Bonn, Germany
J Am Soc Echocardiogr 18:649-53. 2005..There is little knowledge about the incidence of cerebral embolism for patients with transesophageal echocardiography (TEE)-guided cardioversion under oral anticoagulation... - Patients with atrial fibrillation and dense spontaneous echo contrast at high risk a prospective and serial follow-up over 12 months with transesophageal echocardiography and cerebral magnetic resonance imagingPeter Bernhardt
Department of Medicine Cardiology, University of Bonn, Bonn, Germany
J Am Coll Cardiol 45:1807-12. 2005..We sought to assess the prognosis of patients with atrial fibrillation (AF) and dense spontaneous echo contrast (SEC) and to determine the incidence of cerebral embolism under continued oral anticoagulation... - Percutaneous left atrial appendage transcatheter occlusion to prevent stroke in high-risk patients with atrial fibrillation: early clinical experienceHorst Sievert
Cardiovascular Center Bethanien, Frankfurt, Germany. horst.sievert@ dgn.de
Circulation 105:1887-9. 2002..This novel implant technology may be appropriate for patients with AF who are not suitable candidates for anticoagulation therapy. Further trials are needed to show the long-term safety and its efficacy in reducing stroke... - [Perioperative Bridging with Enoxaparin. Results of the Prospective BRAVE Registry with 779 Patients]Heyder Omran
St Marien Hospital, Bonn Venusberg Bonn
Med Klin (Munich) 102:809-15. 2007..To date, the optimal heparin dose has not been established. The authors investigated the efficacy and safety of a risk-adapted regimen with the low-molecular-weight heparin enoxaparin in two different, body weight-adapted regimens... - Use of transesophageal contrast echocardiography for excluding left atrial appendage thrombi in patients with atrial fibrillation before cardioversionGiso von der Recke
Department of Medicine-Cardiology, University of Bonn, Germany
J Am Soc Echocardiogr 15:1256-61. 2002..Thus, the application of echo contrast may facilitate the TEE exclusion of LA appendage thrombi and, hence, improve the safety of TEE-guided cardioversion... - Real time myocardial contrast echocardiography during supine bicycle stress and continuous infusion of contrast agent. Cutoff values for myocardial contrast replenishment discriminating abnormal myocardial perfusionTomasz Miszalski-Jamka
2nd Department of Internal Medicine, Jagiellonian University of Cracow, Cracow, Poland
Echocardiography 24:638-48. 2007..Myocardial contrast echocardiography (MCE) is a new imaging modality for diagnosing coronary artery disease (CAD)... - [Assessment of myocardial ischaemia by the use of perfusion contrast echocardiography in a patient with normal dobutamine stress echocardiography]Tomasz Miszalski-Jamka
, Collegium Medicum UJ, , , Poland
Kardiol Pol 65:594-7. 2007 - Periprocedural bridging therapy in patients receiving chronic oral anticoagulation therapyAlex C Spyropoulos
Clinical Thrombosis Center, Lovelace Medical Center, Albuquerque, NM 87108, USA
Curr Med Res Opin 22:1109-22. 2006..This, however, creates a clinical dilemma, since discontinuing VKAs may place the patient at risk of thromboembolism... - Diagnosis of ischaemic heart disease by myocardial contrast echocardiography during supine bicycle stressTomasz Miszalski-Jamka
II Katedra Chorób Wewnętrznych, Collegium Medicum UJ, ul Skawinska 8, 31 066 Krakow, Poland
Kardiol Pol 64:355-61; discussion 362-3. 2006..Myocardial contrast echocardiography (MCE) is a new imaging modality for diagnosing ischaemic heart disease (IHD)... - Transesophageal contrast echocardiography distinguishes a left atrial appendage thrombus from spontaneous echo contrastGiso von der Recke
Department of Medicine-Division of Cardiology, University of Bonn, Germany
Echocardiography 19:343-4. 2002 - Fate of left atrial thrombi in patients with atrial fibrillation determined by transesophageal echocardiography and cerebral magnetic resonance imagingPeter Bernhardt
Department of Medicine Cardiology, University of Bonn, Bonn, Germany
Am J Cardiol 94:801-4. 2004..02). Patients with AF and atrial thrombi have a large likelihood of cerebral embolism (16%) and/or death despite oral anticoagulation therapy. Thrombus size may predict thrombus resolution under continued anticoagulation... - Impaired systolic dysfunction of left ventricular longitudinal fibers: a sign of early hypertensive cardiomyopathySpyridon N Koulouris
First Department of Cardiology, Evangelismos Hospital, Athens, Greece
Clin Cardiol 28:282-6. 2005..This suggests that long-axis systolic dysfunction precedes diastolic dysfunction at the same axis in hypertensive patients... - Incidence and rate characteristics of atrial tachyarrhythmias in patients with a dual chamber defibrillatorChristian Wolpert
Department of Cardiology, University of Bonn, Bonn, Germany
Pacing Clin Electrophysiol 26:1691-8. 2003..Continuous atrial arrhythmia detection with a dual chamber ICD reveals a high incidence of atrial tachyarrhythmias with a predominantly short duration of paroxysmal recurrences <1 hour in the vast majority of episodes...