Changes of Arterial Pulse Waveform Characteristics with Gestational Age during Normal Pregnancy

Kunyan Li, Song Zhang, Lin Yang, Hongqing Jiang, Zhenyu Chi, Anran Wang, Yimin Yang, Xuwen Li , Dongmei Hao, Lei Zhang, Dingchang Zheng

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Arterial pulse waveform analysis has been widely used to reflect physiological changes in the cardiovascular system. This study aimed to comprehensively investigate the changes of waveform characteristics of both photoplethysmographic (PPG) and radial pulses with gestational age during normal pregnancy. PPG and radial pulses were simultaneously recorded from 130 healthy pregnant women at seven gestational time points. After normalizing the arterial pulse waveforms, the abscissa of notch point, the total pulse area and the reflection index were extracted and compared between different measurement points and between the PPG and radial pulses using post-hoc multiple comparisons with Bonferrioni correction. The results showed that the effect of gestational age on all the three waveform characteristics was significant (all p < 0.001) after adjusting for maternal age, heart rate and blood pressures. All the three waveform characteristics demonstrated similar changing trends with gestational age, and they were all significantly different between the measurements from gestational week 12–15 and the others (all p < 0.05, except for the PPG total pulse area between the first and second measurement points). In conclusion, this study has comprehensively quantified similar changes of both PPG and radial pulse waveform characteristics with gestational age.
Original languageEnglish
Article number 15571
Number of pages7
JournalScientific Reports
Publication statusPublished - 22 Oct 2018
Externally publishedYes

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