Persistent value of air-augmented radiograph in neonatal high gastrointestinal obstruction, despite more modern techniques.

Air is a safe and effective natural contrast agent in neonatal high gastrointestinal (GIT) obstruction. Successful early decompression often results in plain abdominal radiographs of low diagnostic yield. We present a series of neonates with high GIT obstruction in whom air-augmented abdominal radiographs (AAAR) were performed instead. Fourteen neonates presented with suspected high GIT obstruction. In 12 sick babies, obstruction was confirmed and the level of obstruction was determined. The other two neonates required additional positive contrast upper GIT studies. These confirmed small bowel malrotation. For neonatal high GIT obstruction an AAAR can provide a rapid and accurate diagnosis. Positive contrast agent studies should be performed when the AAAR is non-diagnostic.

Who should treat pyloric stenosis: the general or specialist pediatric surgeon?

Recent reports suggest that children under 3 years of age are best operated on by a specialist pediatric surgeon. In the United Kingdom, hypertrophic pyloric stenosis traditionally has been treated by adult general surgeons. Should this change? In 1991, a retrospective review of 10 years' experience with pyloric stenosis, managed by general surgeons in a large district general hospital, was published. In 1969, an accredited pediatric surgeon, who largely took over the management of pyloric stenosis, was appointed to the staff. His results with 70 children over a 5-year period (series 2) were reviewed retrospectively and compared with the previously published general surgical series of 170 children (series 1). There was no significant difference in the gender, age, or weight distribution between the two series. There was a marked difference in the rates of wound infection (15.5% in series 1; 2.8% in series 2; P < .05), wound dehiscence (6.7% in series 1; 0% in series 2; P < .05), and breach of the duodenal mucosa (12.8% in series 1; 0% in series 2; P < .01). The lower morbidity rate resulted in a shorter hospital stay, with emotional and financial savings. This supports the recommendation that children with this condition should be managed by a pediatric surgeon.

Tracheo-oesophageal fistula and pre-operative mechanical ventilation.

Twelve patients with tracheo-oesophageal fistula (TOF) and restrictive lung disease necessitating pre-operative ventilation are reported. Eight patients had respiratory distress syndrome, four had aspiration pneumonia, and 11 had associated oesophageal atresia. Two patients in whom a preliminary gastrostomy was performed died. Emergency ligation of the fistula was performed in 10 patients, nine of whom survived. Following division of the fistula, respiratory function improved dramatically in three patients and primary oesophageal repair was performed. Three patients underwent delayed primary repair and the oesophagus was sacrificed, with a view to replacement at a later date, in the remaining three patients. We believe that the presence of a TOF in a neonate with poorly compliant lungs requiring mechanical ventilation represents a serious surgical challenge. Gastrostomy alone should never be performed. Ligation of the fistula with either immediate or delayed primary repair of the oesophagus are the treatments of choice.

Congenital diaphragmatic defects that present late.

Twenty two patients (age range: 1 month to 11 years) were treated for congenital diaphragmatic defects (excluding hiatus hernia) in the six year period 1983-8. Presenting features were failure to thrive (n = 7), abdominal pain and vomiting (n = 4), chronic respiratory symptoms (n = 3), and inability to wean from ventilatory support (n = 3). The defect was an incidental finding in five patients. Operative repair was performed with no mortality or serious postoperative morbidity. Dramatic improvement occurred in 15 of the 17 symptomatic patients. Awareness of the differential diagnosis should avoid delay in diagnosis or inappropriate treatment. Surgical correction is strongly recommended in all cases.

Posterior sagittal anorectoplasty for reoperation in children with anorectal malformations.

A prospective study was carried out in 12 consecutive patients (7 boys and 5 girls), to evaluate posterior sagittal anorectoplasty for patients incontinent of faeces after anorectal reconstruction. Examination revealed anatomical problems such as: recurrent fistula (two), massive urethral diverticulum (one), absent vagina (one), and a missed urogenital sinus (one). Preliminary electromyography showed the external sphincter to be displaced from the anus in nine patients. Posterior sagittal anorectoplasty, with correction of anatomical defects and precise reconstruction of bowel within the sphincters, was carried out after the formation of a loop colostomy. No postoperative complications were observed. Contrast studies confirmed healed suture lines before stoma closure. Follow-up, between 4 and 46 months, revealed good faecal control in only two patients, with a significant improvement in two others. The rest remained incontinent although sensation was improved. These disappointing results, at variance with other published reports, lead us to conclude that posterior sagittal anorectoplasty, when used as a secondary procedure, is good for correcting anatomical defects but not for improving faecal continence.

Use of a single layer extramucosal suture for intestinal anastomosis in children.

We report our experience using an interrupted single layer extramucosal suture technique to construct both large and small bowel anastomoses in children. There were 75 anastomoses constructed in 68 children without any clinical evidence of a leak or any complications attributable to the anastomosis. Function after completion of the anastomosis was rapid. The median time for the passage of the first stool after operation was 46 h. This technique allowed construction of an end to end anastomosis with minimal reduction of the lumen even when there was great disproportion between the ends of intestine. It was therefore particularly suitable for the anastomosis of bowel of very small calibre.

How accurately can direct and indirect inguinal hernias be distinguished?

An inguinal hernia was clinically diagnosed as direct or indirect by paired surgeons of 134 occasions. When compared with the findings at operation the hernia was correctly diagnosed in 60 of 78 observations when it was indirect and in 33 of 56 when it was direct. The level of accuracy does not warrant continuing the practice of attempting to distinguish one type of inguinal hernia from another.