[The sino-atrial node as an indicator of oscillatory processes in the cardiovascular system]

Autor: Iu P, Sheĭkh-Zade, G Kh, Mukhambetaliev, I L, Cherednik
Rok vydání: 2007
Předmět:
Zdroj: Rossiiskii fiziologicheskii zhurnal imeni I.M. Sechenova. 92(8)
ISSN: 0869-8139
Popis: The spectrogram of heart rate in denervated (vagotomy + propranolol) and artificially ventilated cats always contains the true respiratory peak and 1-3 resonance ones pacing at intervals equivalent to frequency of breathing. Hypothermic decrease of heart rate periodically draws the splitting of respiratory peaks and generation of supplementary rate-dependent peaks reflecting the interference of heart and breathing rhythms. The functional base for detection of mentioned peaks is myogenic reaction of sino-atrial node to its extension by fluctuations of venous inflow.
Databáze: OpenAIRE