[Influencing factors on operating times for metal bar removal after Nuss repair]. / Einflussfaktoren der Schnitt-Naht-Zeiten der Metallentfernung nach Nuss-Operation.

BACKGROUND: Metal bar removal after the Nuss repair procedure is prone to be cancelled in cases of operating time shortages due it being suitable to be postponed without harming patients. Consequently, planning operation times as exactly as possible could be one solution. OBJECTIVE: Statistical modelling of operation times of metal bar removal after Nuss repair using the prespecified independent predictors of age, sex, intraoperative complications, and number of implanted metal bars. MATERIAL AND METHODS: We included all patients whose operation notes included an operation time, which was modelled via linear regression and subject to internal validation via bootstrap. Exploratory analyses also consisted of the surgeon's experience, the number of stabilizers, the body mass index, and preceding re-do surgery for bar dislocation. RESULTS: We included 265 patients (14% ♀) with a median age of 19 years (interquartile range 17-20 years), of whom 81% had 1 and 17% had 2 metal bars removed. The prespecified regression model was statistically significant (likelihood ratio 56; df = 5; P < 0.001) and had a bias corrected R2 of 0.148. Patient age influenced operation times by 2.1min per year of life (95% confidence interval 1.3-2.9min; P < 0.001) and 16min per explanted metal bar (95% confidence interval: 10-22min; P < 0.001). CONCLUSION: The patient-specific factors of age and the number of explanted metal bars influenced the operation times and can be included into scheduling operation times.

Evaluation of the Appropriate LigaSure™ Device to Transect the Appendix-A Comparison between 5 mm and 10 mm Laparoscopic Devices in an Ex Vivo Trial.

Background and Objectives: A topic of greatinterest in the surgical field comprises cost and time reduction operative techniques with high efficiency rates. Thus, the aim of this paper is to evaluate whether a transection of the appendix using only a laparoscopic LigaSure™ device is feasible and, if so, which size of the laparoscopic device is optimal. Materials and Methods: Appendectomy specimens were sealed and cut using LigaSureTM V (5 mm) and LigaSure AtlasTM (10 mm) devices ex vivo. Analysis criteria included handling, resistance to bursting pressure of the appendicular stump (adequacy), eligibility, durability and airtightness. Results: Twenty sealed areas were measured. While the 5 mm instrument was not able to transect the appendix in one attempt in any of the cases, the 10 mm device could be applied successfully without any handling difficulties. The adequacy of the sealed area was rated as complete and dry in all 10 cases using the 10 mm device and as oozing in 8 of the cases using the 5 mm device. There was no leakage in terms of air and liquid tightness using the 10 mm device, in contrast to six sealed segments with air and liquid leakage when using the 5 mm device. The resistance to bursting pressure was on average 285 mmHg and 60.5 mmHg with the 10 mm and 5 mm devices, respectively. The durability and eligibility of the 10 mm device were rated as very sufficient in 9 of 10 cases (1 perforation) in contrast to the 5 mm device, where the sealing in 9 of 10 cases was not sufficient (9 perforations). Conclusions: Using the 10 mm laparoscopic LigaSure™ device for the transection of the appendix seems to be feasible, safe and resistant to 300 mmHg bursting pressure. The 5 mm LigaSure™ instrument is inadequate to seal the appendix in humans.

Paediatric Pilonidal Sinus Disease: Early Recurrences Irrespective of the Treatment Approaches in a Retrospective Multi-centric Analysis.

BACKGROUND: Incidences of pilonidal sinus disease are rising. Guidelines rarely consider children and adolescents and evidence for their treatment is rare. The literature is divided on the choice of the preferable surgical procedure. Therefore, we aimed to assess recurrences and complications following different treatment approaches in our multi-centric cohort. METHODS: We retrospectively assessed all patients treated for pilonidal sinus disease in the paediatric surgical departments of Bonn and Mainz between 01/01/2009 and 31/12/2020. Recurrences were defined according to the German national guidelines. The pre-specified analysis via logistic regression included the operative approach, age, sex, use of methylene blue, and obesity as independent predictors. RESULTS: We included 213 patients, of which 13.6% experienced complications and 16% a recurrence. Median time to recurrence was 5.8 months (95% confidence interval: 4.2-10.3), which was slightly higher in children than adolescents (10.3 months, 95% confidence interval: 5.3-16.2 vs. 5.5 months, 95% confidence interval: 3.7-9.7). None of the investigated procedures, excision and primary closure, excision and open wound treatment, pit picking, and flap procedures had a decisive advantage in terms of complications or recurrence. Of the independent predictors, only obesity was associated to complications (adjusted odds ratio: 2.86, 95% confidence interval: 1.05-7.79, P = 0.04). CONCLUSIONS: We did not find a difference between the investigated procedures, but our analysis is limited by the small sample size in some subgroups. Our data corroborates that recurrences in paediatric pilonidal sinus disease occur early. Factors linked to these differences remain unknown.

Epigastric hernias in children and the use of ultrasound in its diagnosis.

Introduction: There is a paucity of clinical data on pediatric epigastric hernias despite them accounting for up to 6% of all hernia repairs in children. We aimed to provide additional data to supplement those 117 cases of a recent systematic review and to further clarify the role of ultrasound in diagnosing pediatric epigastric hernia. Methods: We retrospectively included all 60 patients treated for epigastric hernias in children in two tertiary pediatric surgical departments within 12 years. Associations were tested via point-biserial correlation analyses. Results: Epigastric hernias primarily affected preschool children with a median age of 39 months. The vast majority of patients (88%) presented with swelling that was occasionally (30%) accompanied by pain. Fascial defects could be found during clinical examination in 45% of patients with a median size of 5 mm (95% CI 3 to 10). Smaller defects were less likely to be palpable (r=-0.44, 95% CI -0.08 to -0.7, p=0.021). Likewise, ultrasound was used more frequently with smaller fascial defect sizes (r=-0.51, 95% CI -0.16 to -0.74, p=0.007). Laparoscopic repair was used in 11 patients (19%) and more often (4/11) in combination with another simultaneous procedure than open repair (11/48). Conclusions: Epigastric hernias are primarily a condition of the preschool child. Ultrasound can be beneficial if the diagnosis cannot be made clinically; otherwise, it is abdicable if it does not change the management of the patient's epigastric hernia. Laparoscopic repairs might be beneficial for children with multiple defects or simultaneous procedures.

Complications following metal bar removal after Nuss repair are rare in a duocentric retrospective evaluation.

PURPOSE: Minimally invasive pectus excavatum repair has gained widespread acceptance and its results and complications are well-described. However, there is a substantial debate on the risks and frequencies of complications following metal bar removal. We, therefore, aimed to analyse all complications that occurred during and after metal bar removal at our two paediatric surgical centres. METHODS: Bar removal surgeries were identified via procedural codes and electronic records were reviewed using a pre-specified data extraction chart. Both intra- and postoperative complications were included and the latter scored according to Clavien-Dindo. We analysed the influence of the pre-specified potential predictors age, sex, and the number of implanted metal bars on the occurrence of complications using logistic regression. RESULTS: We included 279 patients with a median age of 19 years (interquartile range 17-20 years). 15 patients experienced 17 complications. Of 11 postoperative complications, only an enlarging pleural effusion required a chest drain in local anaesthesia, resulting in a Claven-Dindo grade IIIa, whereas the remainder were classified as grade I. Neither age (adjusted odds ratio (aOR) 0.97, 95% confidence interval (CI) 0.84-1.13, P = 0.73), nor sex (aOR 0.88, 95% CI 0.19-4.07, P = 0.87) or the number of bars (aOR 0.64, 95% CI 0.15-2.71, P = 0.547) did influence the occurrence of complications. CONCLUSION: Complications following metal bar removal were scarce in our duocentric retrospective series and usually of minor relevance. However, to address the perceived paucity of data on the frequency and severity of complications following metal bar removal, further studies, including large database research is necessary.

Feasibility of microlaparoscopy for surgical procedures of advanced complexity in children.

UNLABELLED: Abstract Purpose: We conducted a prospective study to determine the value and the feasibility of the microlaparoscopic approach for surgical procedures of advanced complexity in children. We report our experience with these small instruments. We also report the preliminary results of a recently developed 2.4 mm prototype scope, specifically developed for the present study. METHODS AND PATIENTS: This study includes 15 children (aged two weeks to 11 years; median, 2.8 years). Eighteen procedures with advanced complexity were carried out: Nissen fundoplication, thoracoscopic congenital diaphragmatic hernia repair in a newborn, hiatoplasty with repair of an upside-down-stomach, laparoscopically assisted pull-through for Hirschsprung's disease in a newborn, laparoscopic transperitoneal pyeloplasty and laparoscopy for acute abdominal illness. RESULTS: No complications occurred due to the exclusive use of 2 mm instruments. All microlaparoscopy procedures were performed successfully except one fundoplication that was converted to an open procedure due to anatomical deformities. The average operative times for the 5 mm and 2 mm groups were similar compared across a similar age and type-of-intervention population. CONCLUSION: The microlaparoscopic approach for surgical procedures of advanced complexity in pediatric surgery is feasible, safe, and effective in conditions where they are indicated and are practical in terms of the surgeon's experience and the facilities. The advantages of microlaparoscopy are obvious: minimum access trauma, "nearly scarless" healing, less risk of damage to abdominal organs, the possibility of fewer adhesions and less postoperative pain. We suggest the further consideration of the use of the microlaparoscope for advanced laparoscopic procedures in children.

Microlaparoscopic-assisted gastrostomy in children: early experiences with our technique.

INTRODUCTION: The aim of this prospective study was to evaluate the feasibility and safety of a new technique for microlaparoscopic-assisted gastrostomy (MAG) in children and infants by using a 1.9-mm scope only. In this paper, we report our early experiences with this method. MATERIALS AND METHODS: In a prospective study, MAG was performed on 12 children (7 boys and 5 girls) after a primary percutaneous endoscopic gastrostomy procedure was considered not feasible or unsafe. The median patient age at the time of surgery was 1.2 years (range, 4 months to 4 years). A 1.7- or 1.9-mm 0-degree scope was introduced at the umbilicus. A 5-mm port was placed over the stomach at the designated site for the tube placement. The stomach was grasped and exteriorized. The gastrostomy was opened, and a balloon gastrostomy tube was placed. RESULTS: In 12 children, the procedure was successfully completed without conversions. Mean operative time was 19 minutes (range, 13-35). No intraoperative complications occurred. Feeds were instituted 5 hours postoperatively and quickly advanced the following day in 11 of 12 children. The procedure may be performed as day surgery. CONCLUSIONS: In our opinion, MAG is a feasible, safe procedure in children. Technically, it is a simple method, particularly in cases where percutaneous tube placement is not feasible. It combines the advantages of microlaparoscopy and open surgery. It is easy to perform in children and allows a primary gastrostomy tube placement. Parents and nursing staff also seem satisfied.