January 1, 1989IEEE Transactions on Biomedical Engineering
24 h sequential spectral analysis of arterial blood pressure and pulse interval in free-moving subjects
Key result
A 24-hour sequential spectral analysis procedure successfully tracked 0.25, 0.1, and 0.05 Hz oscillations in blood pressure and pulse interval over the day-night cycle in 10 ambulant subjects.
Why the study?
Does sequential spectral analysis of 24 h intra-arterial blood pressure recording reveal different patterns of oscillations over the day-night cycle in hospitalized free-moving subjects?
Population
10 hospitalized free-moving subjects
Follow-up
24 hours
Authors
Discussion
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Implication
May enable ambulatory BP oscillation tracking; leaves open validation and clinical utility in larger cohorts.
Study Design
Type
Observational (n=10)
Structured PICO
Does sequential spectral analysis of 24 h intra-arterial blood pressure recording reveal different patterns of oscillations over the day-night cycle in hospitalized free-moving subjects?
P
Population
10 hospitalized free-moving subjects
I
Intervention
24 h intra-arterial blood pressure recording by the Oxford technique with sequential spectral analysis (FFT and AR modeling)
O
Outcome
Patterns of 0.25, 0.1, and 0.05 Hz oscillations in blood pressure and pulse interval over the day-night cyclesurrogate
A novel procedure for 24-hour tracking of blood pressure and pulse interval oscillations successfully identifies distinct day-night patterns in ambulant subjects.
Cite This Study
Rienzo et al. (1989) reported an observational. 24-hour sequential spectral analysis (FFT) vs. Autoregressive (AR) modeling was evaluated on Patterns of 0.25, 0.1, and 0.05 Hz oscillations in blood pressure and pulse interval over the day-night cycle. A 24-hour sequential spectral analysis procedure successfully tracked 0.25, 0.1, and 0.05 Hz oscillations in blood pressure and pulse interval over the day-night cycle in 10 ambulant subjects.