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P91The influence of maternal exercise on placental blood flow measured by simultaneous multigate spectral Doppler imaging (SM‐SDI)
Author(s) -
Degani S.,
Feiner B.,
Leibovich Z.,
Shapiro I.,
Ohel G.
Publication year - 2000
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1046/j.1469-0705.2000.00004-1-90.x
Subject(s) - medicine , blood flow , cardiology , placental circulation , isometric exercise , gestation , heart rate , doppler effect , blood pressure , doppler ultrasound , ultrasound , hemodynamics , pregnancy , placenta , fetus , radiology , physics , astronomy , biology , genetics
Objective To evaluate the effect of maternal isometric exercise on the placental blood flow as reflected by the velocimetric indices PI and RI derived from placental arteries. Subjects Thirty‐four healthy women with normal singleton pregnancies between 22 and 35 weeks of gestation. Methods All subjects underwent an isometric handgrip exercise test. Maternal blood pressure and heart rate together with placental PI and RI were measured at rest, during the exercise and in the postexercise recovery phase. All Doppler measurements were obtained using the Simultaneous Multigate Spectral Doppler Imaging (SM‐SDI) technique, a new ultrasound modality that enables a Doppler study of multiple locations to take place within a very short time. Results There was a significant increase in the mean values of the maternal blood pressure and heart rate during the exercise, and a significant decline in the recovery phase. There was no significant change in the mean value of the Doppler indices throughout the examination. Conclusion Maternal isometric exercise of a similar degree of effort does not affect the impedance of the placental circulation.