Sorensen, "Reduced placental oxygenation during subclinical
uterine contractions as assessed by BOLD MRI," Placenta, vol.
Acetylcholine evoked
uterine contractions in a concentration (0.1-3[micro]M)-dependent manner in IC group (Figure 1).
We imposed a minimum length of 2 minutes (480 samples) for each segment (length chosen from the influence of
uterine contractions over the FHR signal) [14].
Monitoring
uterine contractions is commonly used to estimate the time of an approaching labour.
OCPs suppress ovulation and thin the endometrial lining which reduces menstrual fluid volume along with the amount of PG produced, thus reducing the pain associated with
uterine contractions [10].
Ach and PGF2[alpha] produce
uterine contraction by activation of the muscarinic (M3)-receptor and the prostaglandin FP receptor on the myometrium, respectively (Myatt and Lye 2004; Pappano 2007).
[15] The 3rd stage of labour in this group was characterized by prompt
uterine contractions with rapid expulsion of placenta.
Symptoms of preterm birth were defined as the occurrence of
uterine contractions, cervical effacement, dilatation, or change in consistency.
Pulse rate, electrocardiogram, systolic and diastolic BP, respiratory rate, peripheral arterial haemoglobin oxygen saturation,
uterine contraction, blood loss & baby Apgar score were monitored.
The human uterus contains both oxytocin and vasopressin receptors; stimulation of either receptor causes
uterine contraction. Vasopressin receptor activation also causes vasoconstriction and platelet activation.
Misoprostol was discontinued with cervical dilatation of 2.5 cm or regular
uterine contraction and for dinoprostone second dose was repeated after six hours to achieve regular
uterine contraction.
The findings suggest that foetuses may respond to stress by
uterine contraction during delivery.
