Surgical treatment for congenital duodenal obstruction.

Thirty-four congenital duodenal obstructions (19 duodenal atresia, 7 duodenal web, 7 annular pancreas and one duodenal stenosis) were surgically treated in Siriraj Hospital between 1990 and 1999. Eleven per cent of duodenal atresia had no bile-stained vomiting. Duodenal web which received web excision and duodenoplasty in 43 per cent of cases, also presented with bile-stained vomiting. Duodeno-duodenostomy, duodeno-jejunostomy and web excision with duodenoplasty were performed in 29, 2 and 3 patients respectively. Duodeno-duodenostomy and web excision with duodenoplasty had no difference in the feeding capability. There was no statistically significant difference in duration of TPN, ability to be early fed, post-operative onset of full feeding and hospital stay between diamond-shaped (n = 18) and side-to-side (n = 11) duodeno-duodenostomy. Although transanastomotic feeding tube (n = 4) decreased a percentage of TPN requirement and made early feeding possible, the onset of full feeding, duration of TPN and hospital stay were not different from those who had no transanastomotic tube (n = 30).

Necrotizing enterocolitis: a comparison between full-term and pre-term neonates.

A retrospective study comparing 16 full-term and 18 pre-term neonates with NEC operated on at Siriraj Hospital between 1987 and 1999 is presented. Major risk factors leading to NEC in full-term neonates included sepsis, SGA, birth asphyxia, severe jaundice requiring exchange transfusion and chorioamnionitis. Although full-term neonates developed NEC earlier than pre-term neonates (8.56 days vs 12.78 days), the average ages of operation in both groups were the same. There was no difference in CBC and bacteriological culture's results between term and pre-term patients. The decision to conduct operative treatments for full-term neonates with NEC was mostly based on only clinical signs of peritonitis (56.25%) before the pneumoperitoneum developed (31.25%). Ileo-caecal region was the most common site of bowel necrosis in both premature and full-term infants. Although term infants had a better 3-month survival rate than pre-term neonates (75% and 61% respectively), both groups had the same surgical complication rates.

Sacrococcygeal teratoma: 25 year experience.

We retrospectively studied all thirty-five children (M 6, F 29) with sacrococcygeal teratomas admitted to Siriraj Hospital between 1974 and 1999. Although an abdominal delivery is recommended for lesions greater than 5 cm to avoid dystocia, the average diameter of masses which required interventions from dystocia (n = 3) was not different from vaginal delivery (n = 27). All except two first presented with sacral masses recognized at birth. One patient presented with an abdominal mass and the last one was diagnosed after suffering from difficulty in urination. Ninety-seven per cent of cases were completely excised initially (32 sacral, 2 abdomino-sacral approaches), however, six patients required other treatment for recurrent diseases. One mature teratoma recurrence was resected. Two patients who had malignant recurrences following complete benign excisions, died from advanced malignancy. Four presented with malignancy initially. Wound infection, bladder atony and UTI were the most common complications postoperatively. Advanced malignancy was the major cause of death. No patient died directly from the procedure.

Gastrostomy button: clinical appraisal.

We retrospectively studied all gastrostomy buttons inserted in the Royal Children's Hospital, Brisbane between 1988 and 1995. One hundred and thirty-two patients (M = 60, F = 72) and 388 buttons were analysed. Intellectual handicap and cystic fibrosis comprised the majority of patients. Thirty-three patients had gastrostomy buttons inserted primarily, whereas, 99 patients received gastrostomy buttons inserted into matured gastrostomy stoma. The average longevity of all determined buttons (n = 280) was 360.43 days (SD = 310.24). The first buttons inserted primarily (n = 25) had longer longevity than the first buttons inserted into matured gastrostomy stoma (n = 82) with statistical significance. The average longevity of subsequent buttons was significantly less than the first buttons. Valve incompetence and leakage of gastric content around the shaft were the most common causes of button removal. We concluded that the gastrostomy button is the method of choice for long term enteral feeding in children.

Comparison between mushroom-type and balloon-type gastrostomy buttons.

The gastrostomy button has been improved rapidly over the last ten years. The gastrostomy button was divided into two groups. The first group had a mushroom tip and, in this study, the Bard button represented this group. The other had a balloon as an internal stabilizer and the Mic-key button represented this group. The authors retrospectively studied all buttons inserted at the Royal Children's Hospital, Brisbane between 1988 and 1995. The average longevity of Bard and Mic-key buttons were 378.82 and 259.62 days respectively. Valve incompetence was the most common cause of removal of the Bard button (38%), whereas, balloon rupture was the major cause of removal of Mic-key button (44%). Each type of gastrostomy button had its own advantages and disadvantages and these special characteristics will be discussed.

Early complications of gastric transposition operation.

Gastric transposition was performed in 100 children as a definitive procedure for oesophageal replacement between 1982 and 1997 for 69 oesophageal atresia (41 with distal tracheooesophageal fistula, 20 isolated oesophageal atresia and 8 with proximal tracheooesophageal fistula), 16 severe caustic stricture, 7 intractable peptic reflux stricture and 8 miscellaneous causes. Six mortalities were recorded. Sixty-five patients had complications postoperatively and respiratory complication was the most common complication especially in oesophageal atresia patients. Swallowing difficulty, particularly in oesophageal atresia, occurred in 21 per cent of the patients. Ten patients developed cervical leakage with spontaneous closure and 8 patients suffered from anastomosis stricture. Six jejunostomy revisions were required. Three of five pyloromyotomy obtained inadequate gastric drainage post gastric transposition and required the conversion to pyloroplasty. Because of the distinctive low major life-threatening morbidity and low mortality, we concluded that gastric transposition was a safe, easy and preferable procedure for oesophageal replacement in children.

Primary gastrostomy button: a means of long-term enteral feeding in children.

Between June 1992 and December 1997, forty-two patients (M 19, F 23) received 94 primary gastrostomy buttons due to 22 intellectual handicap, 7 cystic fibrosis, 4 severe gastrooesophageal reflux, 2 bronchopulmonary dysplasia, 2 tumours in the neck region and 5 miscellaneous causes. Open fundoplication concomitant with primary button, primary open button and laparoscopic fundoplication concomitant with primary button were performed in 20, 15 and 7 patients respectively. The average longevity +/- standard deviation of all buttons was 388.36 +/- 360.35 days. The average longevity of the buttons of the laparoscopic fundoplication group was significantly lower than the others. The major causes of removal of Bard buttons were valve incompetence and flap damage, whereas, balloon leakage was the major cause of removal of the Mic-key button. There were merely minor stomal complications and no gastric separation and peritonitis. Because of the acceptable longevity of the buttons and minimal complications, we concluded that the primary gastrostomy button was the preferable method of long term enteral feeding in children.