StayCurrentMD · Inguinal Hernias: Diagnosis and Management
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Podcast16 min·Published Apr 2021Older

Inguinal Hernias: Diagnosis and Management

With Dr. Mira Kodagal & Dr. Ray Hanke & Dr. Jillian Goddard · StayCurrentMD
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What the experts said32 expert statements
The incidence of inguinal hernias overall ranges from about 1% to 5% in full-term newborns.
EpidemiologicalMeera Kotagal
The incidence of inguinal hernias increases to about 13% in premature infants who are less than 32 weeks of gestational age.
EpidemiologicalMeera Kotagal
Most inguinal hernias in children are largely indirect, over 90%.
EpidemiologicalMeera Kotagal
Direct hernias are pretty rare in children and are much more commonly found in adolescents.
ClinicalMeera Kotagal
Femoral hernias are very rare in children and, as in adults, are more common in females.
EpidemiologicalMeera Kotagal
Indirect inguinal hernias in children are a congenital anomaly, meaning that they've occurred in development and are present at the time of birth.
ClinicalMeera Kotagal
Inguinal hernias occur as a result of the failure of the processus vaginalis to fuse.
ClinicalMeera Kotagal
The right processus vaginalis usually obliterates after the left, which explains the higher prevalence of right-sided hernias.
ClinicalMeera Kotagal
The number one risk factor for inguinal hernias in children is prematurity.
ClinicalMeera Kotagal
Other factors associated with an increased risk of inguinal hernias in kids include male sex, family history of inguinal hernias, a history of undescended testicle or hydrocele, and a connective tissue disorder.
ClinicalMeera Kotagal
More than half of incarcerations are in patients that are less than six months, and two-thirds of incarcerations are in patients who are less than a year.
EpidemiologicalMeera Kotagal
If corrected gestational age is less than 60 weeks, patients have a high risk for premature apnea postoperatively and need to be admitted after surgery to monitor.
ClinicalMeera Kotagal
One of the most important things in being able to reduce an incarcerated hernia is helping to keep the patient calm, sometimes requiring pain control and sedation.
ClinicalMeera Kotagal
For hernia reduction, one hand guides the contents through the inguinal ring and the other hand applies gentle, steady pressure, which must be maintained in a slow, gentle fashion.
ClinicalMeera Kotagal
During reduction of an incarcerated hernia, you have to squeeze the incarcerated bowel so that the edema gets pushed out, which can take several minutes.
ClinicalTodd
If you can reduce an incarcerated inguinal hernia, you want to go to the OR within the first 24 to 72 hours after the reduction.
ClinicalMeera Kotagal
With laparoscopy, you don't necessarily need to wait after reducing an incarcerated hernia because it's not that much more difficult in a laparoscopic case if there's swelling; in fact, sometimes the edema can help lift the peritoneum off.
OpinionTodd
The most important point in pediatric inguinal hernia repair is that you need to have high ligation of the processus vaginalis, whether you do it laparoscopically or open.
ClinicalMeera Kotagal
Unlike in adults, we don't generally use mesh in the repair of the pediatric inguinal hernia.
ClinicalMeera Kotagal
The outcomes between pediatric laparoscopic repairs and open repairs are thought to be similar, although there is some controversy on this topic.
ClinicalMeera Kotagal
If a child needs an orchidopexy in addition to their hernia repair, most would approach that hernia in an open fashion.
ClinicalMeera Kotagal
When people have been doing orchidopexies and don't stitch the hole closed, patients usually do not get a hernia afterward, suggesting that scar alone may be enough and you may not need to ligate anything.
OpinionTodd
A floor repair should be considered in children who have longstanding or very large hernias where the floor might be blown out or unsupported.
ClinicalMeera Kotagal
The most common complications after inguinal hernia repair in children are superficial site infection, which occur in less than 1% of kids, and recurrence, with rates varying from 1% to 5%.
EpidemiologicalMeera Kotagal
Rare complications include testicular atrophy or damage to the vas deferens.
ClinicalMeera Kotagal
Post-operative hydrocele can occur after laparoscopic repair, and all observed cases have resolved on their own.
ClinicalTodd
In general, we don't try to limit activities in children after a hernia repair; most children can return to normal activities within one to two days.
ClinicalMeera Kotagal
A lot of times, once the patient is put under anesthesia, an incarcerated hernia that was unable to be reduced in the emergency department may actually spontaneously reduce with the patient's relaxation.
ClinicalMeera Kotagal
If a patient has an undescended testicle that's palpable in the inguinal canal, you should plan to do an orchiopexy at the time of your inguinal hernia repair.
ClinicalMeera Kotagal
Children with an absent vas deferens noted on hernia repair should be worked up for cystic fibrosis or for unilateral renal agenesis in the post-op period.
ClinicalMeera Kotagal
If patients are having significant testicular pain after a hernia repair, the main concern is testicular ischemia, best evaluated with ultrasound looking for Doppler flow.
ClinicalMeera Kotagal
In cases of testicular ischemia after hernia repair, patients are monitored and observed with pain control, and surgeons only remove a necrotic testicle, not necessarily one that is partially ischemic.
ClinicalMeera Kotagal