Clinical trial NCT01819467: A Trial to Reduce Adhesions Following a Primary Cesarean Section
Official title: A Randomized Controlled Trial to Reduce Adhesions Following a Primary Cesarean Section
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: NA
Conditions: Tissue Adhesions
Lead sponsor: South East Area Health Education Center, Wilmington, NC
Sponsor class: OTHER
Collaborators: name: New Hanover Regional Medical Center
First posted: 2013-03-27
Enrollment: 29
Sex: FEMALE
Minimum age (years): 12
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The primary objective of this study is to determine whether the use of Seprafilm reduces the incidence rate of adhesion formation following a primary C-section.

A secondary objective of the study will be to determine whether or not a correlation between the adhesion score and the difficulty or delay in delivery of the infant exists.

Detailed description: A cesarean section or delivery (C-section/CD) is the surgical removal of an infant and placenta through the mother's abdominal and uterine wall. This procedure is performed by an obstetrician and is one of the most common types of surgical methods used today. According to the Centers for Disease Control and Prevention, the rate for this method of delivery has risen over the past decade. However, recent research has shown that patients who receive this surgical procedure become more susceptible to adhesions.

Adhesions are formations (bands) of scar tissue that occur immediately following most surgical procedures. Adhesions limit the mobility of tissues and organs near the incision site by causing them to stick together. This limited mobility can generate an increased rate of morbidity (occurrence of other diseases). Morbidities caused by adhesions include but are not limited to abdominal and/or pelvic pain, bowel obstruction (partial or complete blockage of the bowel), subfertility (difficulty getting pregnant) and infertility (inability to get pregnant).

A study conducted by Dierdre Lyell, MD reported that the incidence of adhesion formation following a primary CD ranges from 46-65%. Another study (Morales et al) reported that for women who had undergone a CD, the incidence rate of adhesions and severe adhesions was greater in women who had had repeat CDs compared with women who only had a primary CD. In addition, this study also states that the percentage of adhesion occurrence increases in women with each subsequent (following) CD.

Numerous methods have been implemented toward the preventions of adhesions. Currently, Seprafilm is an approved adhesion prevention method that is used in most surgical procedures. Seprafilm is a clear film that is composed of chemically modified sugars (some of which occur naturally in the human body). Unlike its counterpart Interceed, Seprafilm is unaffected by the presence of blood. After being placed, Seprafilm becomes a gel within 24-48 hours and then is slowly absorbed and excreted by the body over the course of 1-4 weeks.

Seprafilm Adhesion Barrier is FDA approved for use in patients undergoing abdominal or pelvis laparotomy as an adjunct intended to reduce the incidence, extent and severity of post-operative adhesions between the abdominal and between the uterus and surrounding structures.

Eligibility criteria: Inclusion Criteria:

* Females 12 years and older undergoing a scheduled primary cesarean section at or after 24 weeks estimated gestational period

Exclusion Criteria:

* Patients transferred from outlying hospitals who expect to undergo repeat C-section at that hospital.
* Patients who have had previous laparotomy
* Patients having a previous laparoscopy demonstrating adhesions of bladder peritoneum or uterine serosa or myometrium to the parietal peritoneum or omentum or bowel to the uterus or parietal peritoneum; or involving pelvic adhesiolysis, enterolysis or other surgery on bowel located in the pelvis, uterine myomectomy , adnexectomy or other adnexal surgery including ovarian cystectomy, tuboplasty, tubal reanastomosis, and removal of endometriosis
* Patients with an adhesion score \> 0 at the time of primary cesarean section
* Patents with chorioamnionitis, appendicitis or infection of other pelvic viscera at the time of primary cesarean section.
* Patients who have taken systemic corticosteroids within 2 weeks of the primary cesarean section. Provided however, patients who have been treated with systemic betamethasone or dexamethasone to promote fetal lung maturity are not excluded
* Patients undergoing tubal sterilization at the time of the primary cesarean section
* Patients with known allergy to hyaluronic acid
* The following criteria are seen as complications or adverse events experienced by the patients in the interval after the puerperium and will therefore exclude patients:

  1. Patient who have had a pelvic inflammatory disease documented by either cervical motion, uterine or adnexal tenderness; and either oral temperature \> 101 degrees or mucopurulent cervical discharge or cervical culture positive for C. trachomatis or N. Gonorrhoeae
  2. Patients who have pelvic abscess or diverticulitis

Primary outcomes:
measure: Adhesion Formation Following a Primary C-section With and Without Adhesion Barrier
timeFrame: 21 months
Secondary outcomes:
Other outcomes:
Locations:
city: Wilmington
country: United States
facility: New Hanover Regional Medical Center
state: North Carolina
Study officials:
affiliation: South East Area Health Education Center
name: Henry A Easley, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Morales KJ, Gordon MC, Bates GW Jr. Postcesarean delivery adhesions associated with delayed delivery of infant. Am J Obstet Gynecol. 2007 May;196(5):461.e1-6. doi: 10.1016/j.ajog.2006.12.017.
citation: Lyell DJ. Adhesions and perioperative complications of repeat cesarean delivery. Am J Obstet Gynecol. 2011 Dec;205(6 Suppl):S11-8. doi: 10.1016/j.ajog.2011.09.029. Epub 2011 Oct 6.