PubMed Health⌕ Search

PubMed · 8333480

Parturitional factors associated with membrane stripping.

Abstract

OBJECTIVE: Our purpose was to determine what factors occurring after digital separation of the chorionic membranes from the lower uterine segment (membrane stripping) are involved in observed clinical changes compared with patients not so treated. STUDY DESIGN: Thirty patients were randomly divided among a study population and two control groups to assess uterine contractions and microbiologic, histologic, and biochemical markers associated with parturitional events over a 7-hour time frame. RESULTS: Clinically, an increased frequency of uterine contractile activity was observed among patients in the membrane-stripped group (p < 0.03). There was a significant increase in plasma 13,14-dihydro-15-keto-prostaglandin F2 alpha (p < 0.001) and endocervical phospholipase A2 activity (p < 0.04) among those who underwent membrane stripping. Blood leukocyte counts, sedimentation rates, prostaglandin E2 metabolite concentrations, and fibronectin levels revealed no significant change during the 7-hour study session. CONCLUSION: Membrane stripping was associated with increases in phospholipase A2 activity and prostaglandin F2 alpha concentrations, indicating a possible correlation with initiation of the cascade of parturitional events.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

S W McColgin, W A Bennett, H Roach, B D Cowan, J N Martin, J C Morrison. 1993. Parturitional factors associated with membrane stripping.. https://doi.org/10.1016/0002-9378(93)90134-5

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Parturition.

Explore the source record for details and available documents.

Amnion↗

Intrathoracic pressure in congenital chylothorax: keystone for the rationale of thoracoamniotic shunting?

Thoracoamniotic shunting in fetal pleural effusion has poor results, with an overall survival of less than 50% when hydrops is associated. Those cases without hydrops presented the best evolution, but the indication in these cases remains controversial. We present a dichorionic diamniotic twin pregnancy at 29 weeks' with right pleural effusion and hydrops, in which one fetus presented diaphragm inversion and mediastinal shift, both considered as ultrasonographic signs of thoracic hypertension. A thoracoamniotic shunt reversed these signs immediately. Nevertheless, 1 week after, these signs and skin edema reappeared and the effusion increased, leading to a second thoracocenthesis for drainage and intrathoracic pressure measurement. Amniotic fluid and intrathoracic pressures were found at 21 and 39 mm Hg, respectively. A cesarean section was performed and the catheter was found to be obliterated by cellular detritus of leukocytes and fibrin. Our conclusion is that ultrasonographic signs of elevated thoracic pressure are a keystone for the shunt indication, and that this could be corroborated by direct measurements. This can be an important parameter for precise indication of thoracoamniotic shunting.

Amnion↗

Rate of epithelialisation and re-operations in corneal ulcers treated with amniotic membrane transplantation combined with botulinum toxin-induced ptosis.

OBJECTIVE: To examine the efficacy of amniotic membrane transplantation (AMT) and/or botulinum toxin type A-induced ptosis (Dysport) in the treatment of corneal ulcerations of different entities. METHODS: Retrospective evaluation of 137 cases of corneal ulcers which have been treated with AMT, botulinum toxin type A and perforating keratoplasty (pKP). Regarding corneal ulcerations the patients were divided into three groups: group A, patients initially having received an AMT (92 eyes eventually followed by AMT or pKP as a second intervention); group B, patients initially having received an AMT (32 eyes followed by botulinum toxin type A injection in the upper lid as a second intervention); group C, patients initially treated only by botulinum toxin type A injection (13 eyes followed occasionally by AMT or pKP or additional botulinum toxin type A injection). Additionally, we analysed the complete epithelialisation rate of the ocular surface in respect to different ocular and systemic diseases and compared the frequency of re-operations in each group. RESULTS: The overall follow-up was 14.2 (+/-14.7 months; range from 1 to 60 months). The total frequency of re-operations was 45.3% (overall time until complete epithelialisation 12.7 (+/-6.1) days). If the patient was initially treated with an AMT (group A), the re-operation rate was 44.6%. Treating affected eyes in this group with a subsequent amniotic membrane resulted in a reduction of re-operation rate to 30.4%. In cases with induced ptosis by injecting botulinum toxin type A in the M. levator palpebrae (group B), the re-operation frequency could be reduced to 34.4% with similar times of epithelialisation [group A: 12.0 (+/-6.5) days and group B: 11.7 (+/-5.5) days]. In group C, with botulinum toxin type A alone initially, the re-operation rate of 69.2% was the highest one compared with groups A and B; this rate could be drastically reduced by a following AMT to 23.1%. Surprisingly, in the few successful cases with botulinum toxin type A alone a quite low epithelialisation time of 6.5 (+/-1.3) days was achieved, but turned out to be similar after additional interventions if compared with the other groups (botulinum toxin type A + AMT: 15.7 (+/-4.9) day). CONCLUSION: AMT alone and combined with botulinum toxin type A-induced ptosis is an effective surgical approach for managing severe corneal ulcerations by promoting wound healing and stabilizing ocular surface homeostasis.

Amnion↗