September 1, 2000Pacing and Clinical Electrophysiology
Cross‐Spectral Analysis of Heart Rate and Blood Pressure Modulations
Population
103 patients referred for the management of coronary artery disease and/or hypertension.
Design
Cross-sectional
Authors
Discussion
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Implication
Accurate cross-spectral baroreflex sensitivity assessment requires maximum coherence frequency selection; leaves open clinical utility pending validation.
Structured PICO
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Population
103 patients (73 men, 30 women, aged 53 +/- 12, range 20-82 years) referred for the management of coronary artery disease and/or hypertension.
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Intervention
Electrocardiogram and blood pressure recordings obtained in the supine and sitting positions during 5 minutes of rest, 3 minutes of slow-controlled respiration (0.1 Hz), and 3 minutes of fast-controlled respiration (0.33 Hz).
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Outcome
Baroreflex gain and phase shift in low and high frequency bandssurrogate
Appropriate selection of the frequency of maximum coherence between blood pressure and heart rate oscillation is crucial for accurate cross-spectral assessment of baroreflex sensitivity.
Cite This Study
Wichterle et al. (2000) studied this question.