Autonomic nervous system dysfunction is a common feature In uremia and may
have a number of clinical sequelae. Simple cardiovascular reflex screening
can be performed in patients during conservative treatment, on periodic dia
lysis therapy, or after kidney transplantation to diagnose and follow up au
tonomic function impairment. Other approaches, such as heart-rate variabili
ty studies In the frequency domain by power spectral analysis, can provide
a more accurate Investigation of the disease. (C) 2001 by the National Kidn
ey Foundation, Inc.