Intra-thoracic pancreatic pseudocyst: a rare complication of traumatic pancreatitis.

The commonest complication of traumatic pancreatitis is the development of pancreatic pseudocyst. We report a patient with traumatic pancreatitis following blunt abdominal trauma who developed an intrathoracic pancreatic pseudocyst late in the course of non-operative management, and discuss the management of this very rare complication of traumatic pancreatitis.

Meta-analysis of laparoscopic versus open pyloromyotomy.

OBJECTIVE: To perform a meta-analysis of studies comparing open pyloromyotomy (OP) and laparoscopic pyloromyotomy (LP) in the treatment of infantile hypertrophic pyloric stenosis. BACKGROUND: LP has become increasingly popular for the management of pyloric stenosis. Despite a decade of experience, the real benefit of LP over the open procedure remains unclear. METHODS: Using a defined search strategy, studies directly comparing OP with LP were identified (n = 8). Data for infants treated by both approaches were extracted and used in our meta-analysis. OP and LP were compared in terms of complications, efficacy, operating time, and recovery time. Weighted mean difference (WMD) between continuous variables and 95% confidence intervals (95% CI) were calculated. For dichotomous data, relative risk (RR) and 95% CI were determined. RESULTS: Only 3 studies were prospective, and just 1 study was a prospective randomized controlled trial. Mucosal perforations and incomplete pyloromyotomy were both more common with LP. Compared with OP, LP is associated with higher complication rate (RR 0.81 [0.5, 1.29], P = 0.4), similar operating time (WMD 1.52 minutes [-0.26, 3.29], P = 0.09), shorter time to full feeds (WMD 8.66 hours [7.25, 10.07], P < 0.00001), and shorter postoperative length of stay (WMD 7.03 hours [3.74, 10.32], P = 0.00003). CONCLUSIONS: OP is associated with fewer complications and higher efficacy. Recovery time appears significantly shorter following LP. A prospective randomized controlled trial is warranted to fully investigate these and other outcome measures.

Carbon dioxide elimination during laparoscopy in children is age dependent.

UNLABELLED: The absorption of carbon dioxide (CO2) used for positive pressure pneumoperitoneum may lead to an increased CO2 load. CO2 elimination during laparoscopy has not been investigated previously in paediatrics. The aim of this study was to characterise the pattern of CO2 elimination during laparoscopic surgery in infants and children. METHODS: Twenty children undergoing laparoscopy and 19 children undergoing laparotomy for elective abdominal operations were studied. Pneumoperitoneum was achieved using insufflation of unheated CO2. CO2 elimination (metabolically produced + absorbed; milliliters per kilogram per minute) was measured minute by minute during the operation by indirect calorimetry. End-tidal CO2 (kPa) was recorded every 10 minutes. The above variables were assessed before CO2 insufflation, during pneumoperitoneum, and after desufflation. RESULTS: Before insufflation, CO2 elimination was 4.6 +/- 0.3 ml/kg/min and increased after 15 minutes of pneumoperitoneum to 5.2 +/- 0.3 (P <.001). Post desufflation, CO2 elimination decreased toward preinsufflation values, but did not return to baseline by the end of operation (5.8 +/- 0.3; P <.001). End-tidal CO2 was 4.7 +/- 0.2 preinsufflation, peaked at 1 hour (5.3 +/- 0.2; P <.001) and subsequently decreased in response to ventilatory adjustments. The total amount of CO2 insufflated was positively correlated with patient age (r2 = 0.27; P <.01). CO2 elimination was age related, as indicated by multilevel model analysis and by negative correlations between maximum increase in CO2 elimination and both age (r2 = 0.27; P <.01) and weight (r2 = 0.29; P <.01). These data suggest that the younger or smaller the child, the larger the increase in CO2 elimination. Seven patients (35%) responded to desufflation with a sharp transient increase in CO2 elimination, which did not appear to be related to patient age, length of pneumoperitoneum, abdominal pressure, or type of operation. CONCLUSIONS: During pneumoperitoneum, younger children absorb proportionately more CO2 than older individuals. The short-lived increase in CO2 elimination postdesufflation may be related to an increase in venous return from the lower limbs after release of the abdominal pressure. These findings suggest that small children warrant close monitoring during laparoscopy and during the immediate postoperative period.