title: Hemodynamic changes of renal main arteries in pregnancy-induced hypertension.
abstract: OBJECTIVE
  To detect Doppler ultrasonographic velocimetry alterations of renal main arteries in pregnancy-induced hypertension (PIH).
  
  
  METHODS
  The peak systolic and end-diastolic velocities (Vs, Vd), resistivity and pulsatility indices (RI, PI), systolic/diastolic ratio (S/D ratio), acceleration time (AT) and systolic acceleration (SA) of renal main arteries were obtained in 17 PIH women and 15 age- and gestation week-matched normal pregnant (NP) women. The data between the two groups were compared with unpaired student's t-test.
  
  
  RESULTS
  The AT was much longer and SA much lower in PIH than those in NP, while no significant differences were found in Vs, Vd, RI, PI and S/D ratio.
  
  
  CONCLUSIONS
  AT and SA could be better used than Vs, Vd, RI, PI or S/D for detection of hemodynamic changes of renal arteries in patients with PIH. It may also imply that larger arteries proximal to the renal main artery be significantly affected.
authors.affiliation: Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Yuan
authors.affiliation: Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China. Electronic address: healthwealthhappy@yahoo.com.cn.
authors.forename: Yunyou
authors.initials: Y
authors.lastname: Duan
authors.affiliation: Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China.
authors.forename: Tiesheng
authors.initials: T
authors.lastname: Cao
mesh_terms: D000328:Adult; D001794:Blood Pressure / Q000502:physiology*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D046110:Hypertension, Pregnancy-Induced / Q000503:physiopathology*; D017078:Laser-Doppler Flowmetry; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000503:physiopathology; D011262:Pregnancy Trimester, Second / Q000502:physiology; D012039:Regional Blood Flow / Q000502:physiology; D012077:Renal Artery / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014463:Ultrasonography