Key result
Pulse transit time measurement of artificially induced pulses provided 37% greater sensitivity to flow-mediated vasorelaxation compared to ultrasound brachial artery diameter measurements (p<0.05).
Why the study?
Does a PTT-based method improve sensitivity to flow-mediated vasorelaxation compared to ultrasound brachial artery diameter measurements in human subjects?
Population
12 human subjects
Comparison
Pulse transit time measurement of artificially… vs Ultrasound brachial artery diameter measurements
Authors
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May offer a more sensitive endothelial function test; hypothesis-generating and requires validation before clinical adoption.
Does a PTT-based method improve sensitivity to flow-mediated vasorelaxation compared to ultrasound brachial artery diameter measurements in human subjects?
Effect estimate: 37% greater sensitivity
p-value: p=<0.05
A novel PTT-based method using artificially induced pulses provides a more sensitive and potentially lower-cost alternative to ultrasound for measuring endothelial function.
Maltz et al. (2005) studied this question. Pulse transit time (PTT) measurement of artificially induced pulses vs. Ultrasound brachial artery diameter measurement was evaluated on Sensitivity to flow-mediated vasorelaxation (FMVR) (37% greater sensitivity, p=<0.05). Pulse transit time measurement of artificially induced pulses provided 37% greater sensitivity to flow-mediated vasorelaxation compared to ultrasound brachial artery diameter measurements (p<0.05).
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