January 1, 1999Clinical Science
Impaired sympathetic response before intradialytic hypotension: a study based on spectral analysis of heart rate and pressure variability
Why the study?
How does the autonomic response to standard haemodialysis differ between uraemic patients who develop intradialytic hypotension and those who remain stable?
Population
12 normotensive patients with uraemia
Comparison
Standard haemodialysis vs Stable patients versus unstable patients
Design
Cohort
Follow-up
During a standard dialysis session
Authors
Discussion
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Member takes
Implication
Supports autonomic monitoring to flag intradialytic hypotension risk; leaves open whether targeting sympathetic activation improves outcomes.
Structured PICO
How does the autonomic response to standard haemodialysis differ between uraemic patients who develop intradialytic hypotension and those who remain stable?
P
Population
12 normotensive patients with uraemia
I
Intervention
Standard haemodialysis
C
Comparator
Stable patients (minor pressure decline) versus unstable patients (intradialytic hypotension)
O
Outcome
Autonomic response assessed by power spectra of R-R interval and blood pressure fluctuations (LF and HF ranges)surrogate
Impaired sympathetic activation during late haemodialysis precedes and likely contributes to the onset of intradialytic hypotension in uraemic patients.
Cite This Study
Pelosi et al. (1999) studied this question.