Human Reproduction, Vol 13, 1841-1845, Copyright © 1998 by Oxford University Press
I Jarvela, A Tekay and P Jouppila
The aim of the study was to evaluate the effect of a copper- intrauterine
device (IUD) on uterine artery blood flow during the midluteal phase and on
the first day of the menstrual cycle using pulsed colour Doppler
ultrasonography. Twenty-one regularly menstruating women (18-45 years) who
were willing to use copper-IUD contraception participated in the study. The
patients were first examined without the IUD in the midluteal phase 6-9
days before the expected onset of menstruation and on the first day of
menstruation, after which the IUD was inserted. Three months later the
patients were examined again on the corresponding cycle days. The patients
estimated the level of dysmenorrhoeic pain with a scoring system.
Transvaginal ultrasonography with colour flow imaging was used to measure
the pulsatility index (PI) in the uterine arteries. There were no
significant changes in the uterine artery blood flow after the insertion of
the IUD during menstruation or in the midluteal phase. In patients with
increased IUD-related pain during menstruation (n = 5), however, there was
a decrease in PI (2.87 +/- 0.52 versus 2.41 +/- 0.23, P = 0.05) after IUD
insertion. The decrease in the mean PI was present in all five patients. In
conclusion, copper-IUD does not induce any major changes in the resistance
of the uterine artery blood flow, although during menstruation in patients
with increased menstrual pain after IUD insertion there seems to be a
decrease in the uterine artery PI.
ARTICLES
The effects of a copper-intrauterine device on the uterine artery blood flow in regularly menstruating women
Department of Obstetrics and Gynecology, Oulu University Hospital, Finland.
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