Umbilical Pathologies Bonus Episode
Umbilical hernia is the most common cause of umbilical bulge in infants.
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The differential diagnosis of umbilical bulge includes umbilical hernia, urachal cyst, patent omphalomesenteric duct, umbilical granuloma, umbilical polyp, and omphalitis (when significant erythema is present).
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Urine draining from the umbilicus is associated with a patent urachus.
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Succus draining from the umbilicus suggests a patent omphalomesenteric duct.
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When ultrasound shows patent urachus or patent omphalomesenteric duct, the next step is usually operative exploration.
Host summaryEllen Encisco summarizes what Dr. Mira Kotigal said — not the host's own clinical position1:25 ↗
An umbilical polyp is a small remnant of the omphalomesenteric duct extending from the umbilicus that can be excised.
clinicalMeera Kotagal1:56 ↗
An umbilical granuloma is granulation tissue or asymptomatic pink tissue at the base of the umbilicus, often seen in very small infants shortly after umbilical cord separation, treated with silver nitrate.
clinicalMeera Kotagal1:56 ↗
On physical exam, an umbilical polyp has a stalk and can be moved around more freely, whereas granulomatous tissue is more stuck on at the base of the belly button.
Host summaryEllen Encisco summarizes what Dr. Mira Kotigal said — not the host's own clinical position2:16 ↗
The primary risk factor for umbilical hernias is prematurity.
epidemiologicalMeera Kotagal2:42 ↗
African-American infants are 8 times more likely to have an umbilical hernia compared to Caucasians.
epidemiologicalMeera Kotagal2:42 ↗
For umbilical hernias, clinicians generally wait until the patient is at least 4 years of age before surgical repair.
Host summaryRod Gerardo summarizes what Dr. Mira Kotigal said — not the host's own clinical position2:56 ↗
85% of infant umbilical hernias will close on their own.
epidemiologicalMeera Kotagal3:09 ↗
Small umbilical hernia defects are more likely to close spontaneously compared to larger defects (those over 1 to 1.5 centimeters).
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Routine pediatric umbilical hernias are repaired as an outpatient procedure.
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Pediatric umbilical hernia repair does not use mesh, unlike adult repairs.
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During pediatric umbilical hernia repair, it is important to close normal fascia to normal fascia, not hernia sac to hernia sac.
clinicalMeera Kotagal3:28 ↗
Pyloric Stenosis Guideline Recap
Pyloric stenosis presents with progressive nonbilious emesis and sometimes a palpable olive in the epigastrium.
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Labs in pyloric stenosis most often demonstrate a hypochloremic, hypokalemic metabolic alkalosis.
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Ultrasound criteria for pyloric stenosis are muscle width greater than 3 millimeters and length greater than 14 millimeters.
clinicalMeera Kotagal0:00 ↗
The Dalton et al. framework from Kansas City predicts the number of fluid boluses needed based on the original chloride level, so labs do not need to be rechecked between each bolus in children likely to require two or three saline boluses.
Host summaryMeera Kotagal summarizing a resource — not the host's own clinical position1:00 ↗
Maintenance IV fluid is started at one and a half times the maintenance rate in pyloric stenosis patients.
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Potassium is added to IV fluids once urine output has been confirmed.
guidelineMeera Kotagal2:00 ↗
There is a trend in the literature that isotonic fluids should be used instead of hypotonic fluids in pediatric patients, though evidence is still developing in this age population.
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Patients go to the OR for pyloromyotomy once their bicarb level is less than 30, their chloride is greater than 100, and their potassium is normal.
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Postoperative management includes a short NPO period of around two hours followed by ad lib feeding with breast milk or formula.
guidelineMeera Kotagal3:30 ↗
Randomized controlled trials by Markel et al. and Adebe et al. found that ad lib feeding compared to protocolized feeding is associated with equivalent or shorter hospital stays.
Host summaryMeera Kotagal summarizing a resource — not the host's own clinical position3:30 ↗
Ad lib feeding may result in more emesis but there were no complications associated with that emesis in the Markel and Adebe trials.
Host summaryMeera Kotagal summarizing a resource — not the host's own clinical position3:30 ↗
Differential diagnosis and management of pediatric umbilical pathologies
The differential diagnosis for a pediatric umbilical bulge includes umbilical hernia (most common), urachal cyst, patent omphalomesenteric duct, umbilical granuloma, umbilical polyp, and omphalitis if significant erythema is present.
clinicalMeera Kotagal0:49 ↗
Urine draining from the umbilicus is associated with a patent urachus.
clinicalMeera Kotagal1:17 ↗
Succus draining from the umbilicus suggests a patent omphalomesenteric duct.
clinicalMeera Kotagal1:22 ↗