Difference in pulse transit time between populations: a comparison between Caucasian and Chinese children in Australia.
Pulse wave velocity (PWV) has shown to be a clinically important physiologic measure in the assessment of increased arterial stiffness that is linked to systolic hypertension. Pulse transit time (PTT), which is based on the principle of PWV, has become popular in childhood cardiovascular studies. A previous study has indicated PWV obtained from a Chinese population tends to be higher than that from their Caucasian counterpart of similar age but of different localities. In this study, 67 healthy children (55 Caucasian and 12 Chinese) were recruited to investigate the possible PTT difference between these two ethnic groups in the same region. However, the hypothesized PWV difference (p < 0.05) between them is not observed here in the corresponding PTT measurements (time-related PWV equivalent). Hence, preliminary results suggest that locality or inclusion of pre-ejection period, which forms the major component of the PTT measurement, may contribute to this discrepancy.
Foo
J Y A
JY
Biomedical Engineering Research Centre, Nanyang Technological University, 50 Nanyang Drive, Research Techno Plaza, 6th Storey, XFrontiers Block, 637553, Singapore. jong@ntu.edu.sg
Lim
C S
CS
D044466:Asian People / Q000706:statistics & numerical data*; D001315:Australia / Q000208:ethnology; D001783:Blood Flow Velocity / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology*; D001795:Blood Pressure Determination / Q000379:methods*; D002648:Child; D004562:Electrocardiography / Q000379:methods; D006801:Humans; D017156:Photoplethysmography / Q000379:methods; D011674:Pulse / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D044465:White People / Q000706:statistics & numerical data*