Biventricular pacing in patients with severe heart failure - importance of left ventricular pacing site
| Autor: | Janusz Prokopczuk, Agata Musialik-Łydka Zbigniew Kalarus, Tomasz Kukulski, Radosław Lenarczyk, Beata Średniawa, Oskar Kowalski, Patrycja Pruszkowska-Skrzep, Teresa Zielińska, Wojciech Kreis, Adam Sokal |
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| Rok vydání: | 2005 |
| Předmět: |
medicine.medical_specialty
business.industry Posterior region Ventricular pacing medicine.disease law.invention medicine.anatomical_structure law Physiology (medical) Internal medicine Heart failure cardiovascular system medicine Cardiology Artificial cardiac pacemaker In patient 6-minute walk test cardiovascular diseases Ultrasonography Cardiology and Cardiovascular Medicine Vein business |
| Zdroj: | Europace. 7:303-303 |
| ISSN: | 1099-5129 |
| DOI: | 10.1016/j.eupc.2005.02.063 |
| Popis: | Cardiac resynchronisation therapy (CRT) is the method of treatment in patients (PTS) with chronic heart failure. Using electrocardiographic criteria for the procedure some PTS dont present clinical improvement. The aim of the study was to compare ultrasonographic methods of qualifications to CTR (intravetricular asynchrony – in tissue doppler, interventricular asynchrony - Echo) and analysis of importance of left ventricular pacing site. Method oxygen consumption test (VO2max) and 6-minutes walikng test (6MWT) was performed in 24 patients before and 3 month after resynchronization. We analysed two group of patients: 1. PTS with LV pacing through lateral vein, 2. with LV pacing from posterior region. Results In Group 1 improvement of interventricular resynchronization in Echo was greater (improvement 30,0ms vs 8,9ms), but intraventricular resynchronization and clinical condition was similar in both groups. Optimal interventricular resynchronization (in 3 PTS 0-5ms in Echo) didn't reveal major improvement in VO2max and 6MWT. In 3 PTS with optimal intraventricular resynchronization (0-5ms in tissue doppler) clinical improvement was singnificantly higher comparing with other PTS (VO2max 5,6 vs 3,6, 6MWT 81,6m vs 63,3m). Conclusions Improvement of clinical condition of PTS with both localisations of LV pacing was similar. Intraventricular asynchrony analysed in tissue doppler is the best parameter for qualification to CRT and for programming of pacemaker. |
| Databáze: | OpenAIRE |
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