Human Reproduction, Vol 13, 2480-2483, Copyright © 1998 by Oxford University Press
I Jarvela, A Tekay and P Jouppila
The aim was to evaluate the effect of diclofenac on uterine artery blood
flow resistance during the first day of menstruation. A total of 28
regularly menstruating women were examined longitudinally with and without
a copper intrauterine contraceptive device (IUD) by transvaginal colour
Doppler ultrasonography. The uterine artery pulsatility index (PI) was
first measured, after which 50 mg of diclofenac was infused i.v. After 15
min the PI was measured again. The patients evaluated their menstrual pain
with a scoring system before and after the diclofenac infusion. The mean PI
(SD) during menstruation was significantly lower with the IUD [2.13 (0.43)]
than without [2.39 (0.62)], P = 0.05. The mean PI in nine patients who
experienced advanced menstrual pain was also lower in the presence of the
IUD [2.16 (0.42)] than without it [2.83 (0.78); P < 0.05]. Diclofenac
was effective in revealing menstrual pain both with and without the IUD,
and reduced the PI in the absence of an IUD [pre-treatment 2.39 (0.62)
versus post-treatment 2.12 (0.45); P < 0.001], but had no effect when
the IUD was present [pre-treatment 2.13 (0.43) versus post-treatment 2.10
(0.41)]. The results indicate that by inhibiting prostaglandin synthesis
one can reduce the resistance to blood flow in the uterine arteries during
menstruation. This does not hold true when an IUD is present, however,
suggesting that the device might induce the production of vasoactive agents
other than prostaglandins in the surrounding tissue.
ARTICLES
The effect of diclofenac on uterine artery blood flow resistance during menstruation in patients with and without a copper intrauterine device
Department of Obstetrics and Gynecology, Oulu University Hospital, Finland.
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