StayCurrentMD · Abdominal Wall Defects: Update Course 2013
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Video37 min·Published Sep 2013Older

Abdominal Wall Defects: Update Course 2013

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What the experts said25 expert statements · 2 host summaries
Most of the damage to the intestine in gastroschisis occurs in the last few weeks of pregnancy, based on animal studies and clinical studies
Clinical
The age at spontaneous onset of labor for gastroschisis pregnancy is 3 weeks earlier than the general population
Epidemiological
About half of gastroschisis pregnancies go into labor spontaneously before 37 weeks
Epidemiological
No perinatal center in Canada was doing routine cesarean sections for gastroschisis based on a national survey
Epidemiological
15 or 20 years ago, routine cesarean section for gastroschisis was pretty much the standard of care
Clinical
Using a pre-formed silo allows gentle reduction of gastroschisis bowel without trauma, and in about a third of cases the bowel can be reduced immediately and the silo removed
Clinical
Waiting for gastroschisis babies to lose their first 10% of body weight reduces bowel edema and makes reduction easier
Clinical
Leaving a silo on for more than a day causes the fascial defect to get much bigger
Clinical
Using plastic closure (non-surgical closure) for gastroschisis gives extremely good results, often with a small umbilical hernia that closes by age 2
Clinical
There are two kinds of intestinal atresia in gastroschisis: early-developing atresia not always associated with bowel thickening, and late-occurring atresia from a very small abdominal wall defect
Clinical
Bringing an ostomy out through the umbilicus avoids additional scars and makes subsequent closure easier
Clinical
Gord Cameron in Hamilton in the 1980s was the first to describe umbilical ostomies
Clinical
At 4 weeks post-gastroschisis repair with feeding intolerance, waiting longer is reasonable as the bowel may still be recovering from motility disorder
Opinion
At 8 weeks post-repair with persistent feeding intolerance, exploration is warranted to rule out mechanical obstruction
Opinion
For large omphalocele, attempting to remove the sac and close primarily can lead to inability to achieve closure and need for prosthetic patch
Clinical
The Schuster repair uses mesh sutured to fascia over intact omphalocele sac with gradual closure, eventually allowing primary repair
Clinical
For large omphalocele, patch covered by skin or skin coverage alone is better than paint-and-wait which takes months
Opinion
Lateral component separation makes it easier to bring fascial edges together in omphalocele repair
Clinical
Antibiotic ointment on omphalocele sac keeps it supple, and using 4x4s with Ace wrap compression can gradually reduce the defect
Clinical
Ventilatory parameters are the most reliable measure for assessing safe closure tension
Opinion
Bladder pressure measurement in tiny newborns is unreliable and cannot be trusted consistently
Opinion
Intragastric pressure monitoring via NG tube is easy to perform in the OR and provides useful guidance, with 20 as a suggested threshold
Clinical
For giant omphalocele in older children, enlarging the fascial defect and allowing staged closure over time without forcing reduction prevents abdominal compartment syndrome
Clinical
In older children with giant omphalocele, the abdomen does not expand as rapidly as in newborns and requires more time between stages
Clinical
When opening the fascial ring in giant omphalocele, opening inferiorly avoids encountering hepatic veins at the superior aspect
Clinical
Dr. Abello uses Duoderm wrapped around omphalocele and tightens it daily to achieve gradual reduction
Host summary
Botox has been used successfully by adult hernia surgeons to relax muscle and facilitate closure of large ventral hernias
Host summary