Key result
Limb positional changes significantly altered local pulse transit time, increasing by 42.7 ms in a vertically-raised limb and decreasing by 28.1 ms in a half-lowered limb (p<0.05).
Why the study?
Do positional changes of a limb affect local pulse transit time in healthy adults?
Population
10 healthy adults, mean age 27.0 years, 7 male
Comparison
Positional changes of a limb vs Nominal baseline value
Design
Other
Authors
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Limb position must be standardized for local PTT measurements; leaves open effects on clinical BP estimation validity.
Observational (n=10)
Do positional changes of a limb affect local pulse transit time in healthy adults?
p-value: p=< 0.05
Pulse transit time changes significantly with local limb position (increasing with raising, decreasing with lowering), reflecting local circulatory responses without affecting other limbs.
Foo et al. (2005) conducted an observational in Healthy adults (n=10). Limb positional changes (lowering and raising) vs. Nominal baseline value was evaluated on Pulse transit time (PTT) differences on all four limbs (p=< 0.05). Limb positional changes significantly altered local pulse transit time, increasing by 42.7 ms in a vertically-raised limb and decreasing by 28.1 ms in a half-lowered limb (p<0.05).
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