Ricardo Mattos Paixäo

Use of a plastic hemoderivative bag in the treatment of gastroschisis

Abstract The authors report their experience with the use of a polyvinyl chloride (PVC) bag for blood-derivative transfer as a prosthesis for the creation of a silo for surgical treatment of gastroschisis (GS) in seven newborn infants. The bag is sterile, impermeable to micro-organisms, transparent, flexible, resistant, internally smooth, does not adhere to the bowel loops, readily available, and inexpensive, properties that make it an excellent alternative as a prosthesis for staged surgical treatment of congenital anomalies of the abdominal wall such as GS and omphalocele. The importance of a multidisciplinary team for the care of newborns with GS is also emphasized for a good postoperative outcome.

Percutaneous central venous catheterization through the external jugular vein in children: is inserting the guide wire into the superior vena cava essential for successful catheterization?

BACKGROUND/PURPOSE The external jugular vein (EJV) is an attractive alternative for percutaneous central venous catheterization (PCVC), with fewer complications. The inability to pass the guide wire into the superior vena cava (SVC) is, however, a major reason for the failure of this approach. The authors report a modification of the Seldinger technique to increase the effectiveness of this procedure in children. METHODS Between May 2008 and June 2009, we performed 100 PCVCs consecutively in children using the Seldinger technique through the EJV (Step 1). In cases in which the guide wire could not be passed into the SVC, the guide wire was kept in the EJV; and only the catheter was introduced into the central venous position (Step 2). Differences between the standard and modified Seldinger techniques were analyzed. RESULTS The procedure with the standard Seldinger technique (Step 1) was successful in 13 (13%) out of 100 patients. In 84 (96.5%) of the 87 remaining patients, PCVC was achieved with the modified Seldinger technique, without the insertion of the guide wire until the SVC (Step 2). Altogether, 97 catheters (97%) were successfully inserted, with 85 (87.6%) correctly positioned in the SVC. In addition, there were 7 (7%) clinically irrelevant hematomas during catheterization. CONCLUSIONS The EJV is an excellent alternative anatomical location for the completion of PCVC in children. Placing the guide wire in a central position is not essential to the success rate of this approach. The proposed modified Seldinger technique allowed PCVC to be performed through the EJV safely and with a high success rate in children and adolescents.

Metástases pulmonares em crianças: estamos operando desnecessariamente?

OBJECTIVE to determine, in pediatric patients with malignant neoplasms, the characteristics of pulmonary nodules identified on computed tomography, as well as the possibility of differentiating benign lesions from metastases. METHODS we conducted a retrospective study of patients submitted to pulmonary resections of nodules diagnosed as metastases in a period of seven years. We compared computed tomography and surgery findings, as well as results of anatomopathological examinations. RESULTS we studied nine patients submitted to 11 surgical interventions. Among the studied variables, only nodule size greater than 12.5mm proved to be statistically significant to predict malignancy. CONCLUSION among the tomographic characteristics of pulmonary nodules in children with malignant neoplasms, only the size of the lesion was a predictor of malignancy.