title: Hypolumbarlordosis: a predisposing factor for preeclampsia.
abstract: OBJECTIVE
  The aim of this research was to study the relationship between lumbar lordosis and preeclampsia.
  
  
  METHODS
  We studied lumbar lordosis of 52 primipara patients with pregnancy-induced hypertension and 59 normal primipara pregnant women. We determined the lumbar lordotic deviation (LLD) from lumbar lordosis measurement device in the lateral recumbent position and standing position. Roll-over test was performed for both groups. Resistance index (RI) of internal iliac artery was also measured by color Doppler sonography.
  
  
  RESULTS
  The LLD was 33 +/- 6.1 degrees week 20-29 and 34 +/- 6.9 degrees week 30-40, respectively. In patients with preeclampsia, the LLD was 19.8 +/- 6.3 degrees week 20-29, 21.3 +/- 7.9 degrees week 30-40. The LLD in patients with preeclampsia was significantly lower than in the normal pregnant women. The LLD correlated to the increase diastolic pressure after roll-over test significantly. Hypolumbarlordosis was frequently associated with high resistance of peripheral vessel.
  
  
  CONCLUSIONS
  We conclude that hypolumbarlordosis is frequently associated with preeclampsia. It is also closely related to the mechanism for positive roll-over test and increase of resistance of vessels. As lumbar lordosis does not change greatly in individuals before pregnancy, hypolumbarlordosis may be a predisposing factor for preeclampsia.
authors.affiliation: Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Kanayama
authors.forename: E
authors.initials: E
authors.lastname: el Maradny
authors.forename: Y
authors.initials: Y
authors.lastname: Kajiwara
authors.forename: K
authors.initials: K
authors.lastname: Maehara
authors.forename: N
authors.initials: N
authors.lastname: Tokunaga
authors.forename: T
authors.initials: T
authors.lastname: Terao
mesh_terms: D000328:Adult; D001794:Blood Pressure; D005260:Female; D006801:Humans; D007083:Iliac Artery / Q000503:physiopathology; D008141:Lordosis / Q000150:complications*; D008159:Lumbar Vertebrae; D011187:Posture; D011225:Pre-Eclampsia / Q000209:etiology*; D011247:Pregnancy; D011248:Pregnancy Complications; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D014655:Vascular Resistance