Laparoscopic versus open herniorrhaphy for children with inguinal hernia: A meta-analysis of randomized controlled trials

A comparison of operative and anesthetic techniques for inguinal hernia repair in infants

BACKGROUND

Pediatric inguinal hernia repair (IHR) is increasingly performed using minimally invasive surgery (MIS) but has only recently been described using caudal block without endotracheal intubation. We evaluated the surgical outcomes and resource utilization of infants undergoing hernia repair, comparing both the operative approach (open/MIS) and anesthetic technique (general anesthesia [GA]/caudal).

METHODS

All infants <1 year-of-age undergoing elective IHR without concomitant procedures from July 2016 to July 2021 at a single tertiary care teaching center were retrospectively reviewed. Eight surgeons and 25 anesthesiologists contributed patients, with approach dictated by practitioner preference. Data collected included patient demographics, surgical and anesthetic details, and operating room (OR) utilization metrics. Post-operative complications were evaluated and aggregated, including recurrent hernia, metachronous hernia, hematoma, hydrocele, testicular atrophy, and acquired cryptorchidism. Descriptive statistics were performed with R Studios (p < 0.05).

RESULTS

Of the 338 patients included for analysis, most underwent an open procedure (n = 275) while anesthetic technique was evenly split between GA (n = 185) and caudal (n = 153). Most patients were male (87.6%) and born premature: mean gestational age of 31.4 ± 4.1 weeks. MIS-to-Open conversion was noted once (3.3%) in the GA MIS group, but none in caudal. Median follow up was 2.5 (1.4-3.8) years. No differences were noted in aggregate surgical complication rates (p = 0.4). The Caudal Open group had the shortest total OR time (p < 0.01); caudal anesthesia shortened post-procedure times (p < 0.01).

CONCLUSION

MIS IHR performed under caudal block and sedation yields comparable complication rates compared to the open approach or GA. Open IHR with caudal blockade was the most efficient operative room utilization.

TYPE OF STUDY

Original Article, Clinical Research.

LEVELS OF EVIDENCE

Level III.

Perioperative opioid use in paediatric inguinal hernia patients: A systematic review and retrospective audit of practice

BACKGROUND

Opioids play a major role in postoperative pain management in children, but their administration remains an under investigated topic. This study aimed to describe perioperative opioid prescribing practices for paediatric inguinal hernia patients in the literature and at The Royal Children's Hospital (RCH) in Melbourne, Australia.

MATERIAL/METHOD

A systematic review of English articles (published from 2009 to 2019) was conducted on paediatric (0-18y) inguinal hernia patients who received a postoperative or discharge opioid prescription, or both. The review was combined with a retrospective audit of RCH patients. Demographic, surgical, and analgesic details were collected from the electronic medical records.

RESULTS

Fifteen studies (n = 1166; combined mean age 4.93y) met the systematic review criteria. The percentage of patients receiving opioids postoperatively overall ranged from 3.33-100%, and doses ranged from 0.07 to 0.35 mg/kg oMEDD. At the RCH, perioperative opioid use was analyzed from 150 inguinal hernia patients (male - 113, median age - 3 months old). Postoperatively, 26 (17.3%) patients received opioids. The most commonly administered opioids were fentanyl (0.04-0.60 mg/kg oMEDD) in the post anaesthesia care unit and oxycodone (0.14-0.40 mg/kg oMEDD) in the first 24 h postoperatively. Older age at surgery, female sex and absence of regional anaesthesia were significantly associated with higher risk of total opioid use. No patients received an opioid prescription at discharge.

CONCLUSION

There is demonstratable variability in opioid prescribing practices for paediatric inguinal hernia patients as described in the literature. At our institution opioids were not used frequently in postoperative period.

Pediatric Inguinal Hernia Repair, Laparoscopic Versus Open Approach: A Systematic Review and Meta-Analysis of the Last 10-Year Evidence

Aim: Since the first description of laparoscopic herniorrhaphy (LH), a lot of studies have compared outcomes between LH and open herniorrhaphy (OH) with inconsistent results. We designed this study to assess outcomes between both techniques now that pediatric surgeons have enough confidence with it. Methods: We performed a systematic review and meta-analysis of articles published in the last 10 years. Results: Twenty-seven articles reporting on 91,653 patients (26,920 LH and 64,733 OH) were included. No significant differences were found in overall operative time (OT) (P = .07). Subgroup analysis revealed significantly shorter OT for LH in unilateral (-8.87 minutes, P = .03) and bilateral hernias (-16.86 minutes, P = .004), but longer in unilateral hernias in females (+7.47 minutes, P = .006). Recurrence rate was similar (odds ratio [OR] 1.05, P = .66). Less complications were reported in LH (OR 0.51, P = .03). Contralateral patent processus vaginalis average rate was 39.61% and its closure reported a significant decrease of contralateral metachronous hernia (OR 0.11, P < .00001). Conclusion: Although OH is still considered the gold standard by some authors, LH has proven to be not only as safe as OH but also to have additional advantages that should make pediatric surgeons implement it in their daily practice and not in selected cases alone.

Comparison of Recurrence and Complication Rates Following Laparoscopic Inguinal Hernia Repair among Preterm versus Full-Term Newborns: A Systematic Review and Meta-Analysis

Background: Laparoscopic inguinal hernia repair (LHR) in children has been widely performed in the last decades, although it is still not sufficiently researched in preterm infants. This systematic review and meta-analysis compared the recurrence and complication rates following laparoscopic hernia repair among preterm (PT) versus full-term (FT) newborns. Methods: Scientific databases (PubMed, EMBASE, Scopus, and Web of Science databases) were systematically searched for relevant articles. The following terms were used: (laparoscopic hernia repair) AND (preterm). The inclusion criteria were all preterm newborns with a unilateral or bilateral inguinal hernia who underwent LHR. The main outcomes were the incidence of recurrence of hernia and the proportion of children developing postoperative complications in comparison with FT newborns following LHR. Results: The present meta-analysis included four comparative studies. Three studies had a retrospective study design while one was a prospective study. A total of 1702 children were included (PT n = 523, FT n = 1179). The incidence of hernia recurrence showed no significant difference between the PT versus FT groups (RR = 2.58, 95% CI 0.89–7.47, p = 0.08). A significantly higher incidence of complications was observed in the PT group compared to the FT group (RR = 4.05, 95% CI 2.11–7.77, p < 0.0001). The PT group of newborns accounted for 81% and 72% of the major and minor complications. The major complications were either non-surgical (i.e., severe respiratory distress requiring reintubation with prolonged ventilation (or high-frequency ventilation), seizures, bradycardia), or surgical (i.e., hydroceles requiring operative intervention and umbilical port-site hernia). Conclusions: LHR in PT infants is associated with similar recurrence rates as in FT infants. However, the incidence of complications is significantly higher in PT versus FT infants.