Key result
Traumatic neurologically complete quadriplegic males lacked the low-frequency component of systolic blood pressure variability (Mayer waves) present in healthy controls (5.2 +/- 1.4 mmHg2).
Why the study?
How does traumatic quadriplegia affect spontaneous beat-to-beat systolic blood pressure variability compared to healthy controls?
Population
14 males (7 traumatic neurologically complete quadriplegic males and 7 age-matched healthy males)
Comparison
Observation of spontaneous beat-to-beat systolic… vs Age-matched healthy males
Design
Case-control
Authors
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Altered SBP variability in small QP cohort is hypothesis-generating; leaves open whether it informs autonomic assessment or outcomes in larger studies.
Cross-Sectional (n=14)
How does traumatic quadriplegia affect spontaneous beat-to-beat systolic blood pressure variability compared to healthy controls?
The disappearance of the low-frequency component of systolic blood pressure variability in quadriplegic subjects suggests that cervical spinal sympathetic pathways are instrumental in generating Mayer waves in humans.
Inoue et al. (1991) conducted a cross-sectional in Traumatic quadriplegia (n=14). Traumatic neurologically complete quadriplegia vs. Age-matched healthy controls was evaluated on Spontaneous beat-to-beat systolic blood pressure variability (low-frequency and high-frequency components). Traumatic neurologically complete quadriplegic males lacked the low-frequency component of systolic blood pressure variability (Mayer waves) present in healthy controls (5.2 +/- 1.4 mmHg2).
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