Blood Pressure Variability: Prognostic Value and Therapeutic Implications

Table 2

Role of neurohumoral systems in beat-to-beat BPV in rats and humans.

Frequency domain	Rats	Humans
Very low frequency	Myogenic vascular function, renin angiotensin system, endothelial-derived NO	Myogenic vascular function
Low frequency	Endothelial-derived NO, sympathetic nervous system	Sympathetic nervous system, myogenic vascular function
High frequency	Cardiac output	Endothelial-derived NO

NO: nitric oxide.