Erfassung hämodynamischer Parameter bei Patienten mit chronischer thromboembolischer pulmonaler Hypertonie mittels MRT vor und nach Thrombendarteriektomie
| Autor: | CP Heussel, E. Mayer, Manfred Thelen, K.-F. Kreitner, HU Kauczor, Sebastian Ley, T. Kramm |
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| Rok vydání: | 2003 |
| Předmět: |
medicine.medical_specialty
Ejection fraction Pulmonary thromboendarterectomy business.industry medicine.medical_treatment medicine.disease Pulmonary hypertension Pulmonary embolism medicine.anatomical_structure Internal medicine medicine.artery Anesthesia Pulmonary artery Circulatory system medicine Cardiology Vascular resistance Pulmonary shunt Radiology Nuclear Medicine and imaging medicine.symptom business |
| Zdroj: | RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 175:1647-1654 |
| ISSN: | 1438-9010 1438-9029 |
| DOI: | 10.1055/s-2003-45340 |
| Popis: | Purpose: To evaluate the potential of MRI to grade cardiac impairment and pulmonary hypertension in patients with chronic thromboembolic pulmonary hypertension (CTEPH) in comparison with invasive pressure measurements before and after surgery. Materials and Methods: We examined 35 patients with CTEPH before and after pulmonary thromboendarterectomy (PTE). For assessment of hemodynamics, velocity-encoded segmented GE-sequences (pulmonary arteries and ascending aorta) and segmented cine GE-sequences along the short axis of the heart were performed. The analysis comprised calculation of ejection fractions, peak velocities, mean pulmonary arterial flow and vessel diameter. 10 volunteers served as controls. Flow measurements were compared to invasively measured mean pulmonary arterial pressure (MPAP) and vascular resistance (PVR). Results: Compared to volunteers, CTEPH-patients showed significantly reduced right ventricular ejection fractions (p < 0.001), pulmonary peak velocity (p < 0.001) and significantly increased diameters of the pulmonary arteries (p |
| Databáze: | OpenAIRE |
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