title: Correlation of myometrial thickness and the latency interval of women with preterm premature rupture of the membranes.
abstract: OBJECTIVE
  To verify the hypothesis that a correlation exists between myometrial thickness (MT) and latency interval (LI) in patients with preterm premature rupture of membrane (PPROM).
  
  
  METHODS
  Myometrial thickness was measured ultrasonographically at the mid-anterior (MA), fundal, and posterior parts of the uterus of pregnant women in the following groups: PPROM [n = 45, mean (range), gestational age (GA): 28.6 weeks (w) (24.0-33.0 w)], preterm nonlabor control group (P-CTR) [n = 20, GA: 29.5 w (25.0-32.0 w)] and term nonlabor control (T-CTR) [n = 27, GA: 38.4 w (37.0-41.0 w)].
  
  
  RESULTS
  There was a positive correlation between LI and fundal MT (r = 0.34, P = 0.02), mid-MT (r = 0.47, P = 0.001) and LUS (r = 0.74, P = 0.001). The results were similar in the group of <30 w of GA, but in the group of ≥ 30 w of GA, there was no association. The LUS MT has more area under the ROC curve than MA MT and fundal MT for prediction of LI of ≤ 8 days.
  
  
  CONCLUSIONS
  Significant positive correlation between LI and MT in patients with PPROM may result in a better decision for taking care of infants of preterm birth.
authors.affiliation: Women Hospital (Mirza Kuchakkhan Women Hospital), Tehran University of Medical Sciences, Karimkhan Zand Street, Tehran, Iran.
authors.forename: Lina
authors.initials: L
authors.lastname: Atarjavdan
authors.forename: Zahra
authors.initials: Z
authors.lastname: Khazaeipour
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Shahbazi
mesh_terms: D000328:Adult; D015331:Cohort Studies; D005260:Female; D005322:Premature Rupture of Fetal Membranes / Q000503:physiopathology*; D005865:Gestational Age; D006801:Humans; D009215:Myometrium / Q000000981:diagnostic imaging / Q000473:pathology*; D011247:Pregnancy; D011446:Prospective Studies; D013223:Statistics as Topic; D013997:Time Factors; D014463:Ultrasonography; D014590:Uterine Contraction / Q000502:physiology*; D055815:Young Adult