Comparison of the measured pre-ejection periods and left ventricular ejection times between echocardiography and impedance cardiography for optimizing cardiac resynchronization therapy

BACKGROUND: The pre-ejection period (PEP) and left ventricular ejection time (LVET) are easily measured by impedance cardiography (ICG). We hypothesized that the PEP/LVET measured by ICG would correlate with that measured by echocardiography, and that PEP/LVET measured by ICG would be useful for car...

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Detalles Bibliográficos
Autores principales: Noda, Kazuki, Endo, Hideaki, Kadosaka, Takahide, Nakata, Takashi, Watanabe, Tasuku, Terui, Yosuke, Kajitani, Shoko, Monnma, Yuto, Sato, Kenjiro, Kanazawa, Masanori, Nakajima, Sota, Kondo, Masateru, Takahashi, Tohru, Nakamura, Akihiro, Nozaki, Eiji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2017
Materias:
Original Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5388062/
https://www.ncbi.nlm.nih.gov/pubmed/28416980
http://dx.doi.org/10.1016/j.joa.2016.08.003
Descripción
Sumario:BACKGROUND: The pre-ejection period (PEP) and left ventricular ejection time (LVET) are easily measured by impedance cardiography (ICG). We hypothesized that the PEP/LVET measured by ICG would correlate with that measured by echocardiography, and that PEP/LVET measured by ICG would be useful for cardiac resynchronization therapy (CRT) optimization. METHODS: Newly CRT implanted patients were optimized by echocardiography. The PEP/LVET was measured by echocardiography and ICG in two different settings: optimized setting and right ventricle (RV)-only pacing. RESULTS: The PEP/LVET was significantly decreased in the optimized setting compared with that in RV-only pacing (0.62±0.13 vs 0.75±0.16, p<0.05). The PEP/LVET values calculated by ICG and echocardiography were positively correlated (r=0.553, p=0.003). CONCLUSION: ICG was useful for the optimization of CRT.

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