Key result
Seismocardiogram-derived systolic time intervals significantly correlated with stages of simulated hemorrhage (r = 0.9 and 0.88, P < 0.05), outperforming pulse pressure and heart rate.
Why the study?
Do seismocardiogram-derived systolic time intervals improve the detection of early-stage hemorrhage compared to standard vital signs in subjects undergoing simulated hemorrhage?
Population
32 subjects undergoing graded lower-body negative pressure to simulate a hemodynamic response similar to…
Comparison
Seismocardiogram to derive systolic time intervals vs Pulse pressure, heart rate, and amplitude…
Design
Other
Authors
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May support portable early hemorrhage monitoring; leaves open prospective validation beyond simulation.
Observational (n=32)
Do seismocardiogram-derived systolic time intervals improve the detection of early-stage hemorrhage compared to standard vital signs in subjects undergoing simulated hemorrhage?
Effect estimate: r = 0.9 and 0.88
p-value: p=<0.05
Seismocardiogram-derived systolic time intervals offer a sensitive, noninvasive, and potentially portable method for detecting early-stage hemorrhage.
Tavakolian et al. (2013) conducted an observational in Early-stage hemorrhage (simulated) (n=32). Seismocardiogram (SCG) derived systolic time intervals vs. Pulse pressure, heart rate, and SCG amplitude features was evaluated on Correlation with different stages of lower-body negative pressure (r = 0.9 and 0.88, p=<0.05). Seismocardiogram-derived systolic time intervals significantly correlated with stages of simulated hemorrhage (r = 0.9 and 0.88, P < 0.05), outperforming pulse pressure and heart rate.
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