par Cooley, R L;Montano, Nicola;Cogliati, C;Van De Borne, Philippe ;Richenbacher, W;Oren, R;Somers, Virend Kristen
Référence Circulation, 98, 6, page (556-561)
Publication Publié, 1998-08
Référence Circulation, 98, 6, page (556-561)
Publication Publié, 1998-08
Article révisé par les pairs
Résumé : | Short-term variability of RR interval and blood pressure occurs predominantly at low frequency (LF; approximately 0.1 Hz) and high frequency (approximately 0.25 Hz). The arterial baroreflex is thought to be the predominant determinant of the LF component of RR variability. Patients with severe congestive heart failure (CHF) have an attenuated or absent LF oscillation in RR variability. The left ventricular assist device (LVAD) offers a unique possibility for analysis of spectral oscillations in RR interval independent of any effects of blood pressure that influence these oscillations via the baroreflex. |