Early complications of stenting in patients with congenital heart disease: a multicentre study.

AIMS: Stenting has become an established interventional cardiology procedure for congenital heart disease. Although most stent procedures are completed successfully, complications may occur. This multicentre study evaluated early complications after stenting in patients with congenital heart disease, including potential risk factors. METHODS AND RESULTS: In this combined Dutch-Belgian retrospective study, 309 consecutive patients had undergone 366 catheterizations and received 464 stents in 13 different anatomical positions (418 sites). Seventy-two stenting-related complications (19%) occurred, of which 24 (5.7%) were major. Seven procedure-related deaths were documented (2.3%). Stent malpositioning and embolization were most common (7.7%). The use of non-premounted stents tended to be associated with higher complication rates. Centre inexperience with stenting and stenting of native vs. post-surgical stenosis tended to be associated with increased major complication rates. CONCLUSION: After stenting, complications are common for congenital heart disease. The vast diversity of stenotic sites combined with relatively small patient populations makes these procedures sensitive to complications. Combining operator experience may reduce the risks of stenting in congenital heart disease. The availability of premounted stents for greater vessel diameters will likely reduce incidences of stent migration and embolization.

Sudden unexpected death in children with a previously diagnosed cardiovascular disorder.

BACKGROUND: It is known that children with previously diagnosed heart defects die suddenly. The causes of death are often unknown. OBJECTIVE: The aim of the study was to identify all infants and children within the Netherlands with previously diagnosed heart disease who had a sudden unexpected death (SUD), and to identify the possible cause of death. DESIGN: Retrospective, cross-sectional study. PATIENTS AND SETTING: All children (<19 years) with a previously diagnosed heart defect and SUD between January 1990 and June 2001 in seven out of eight tertiary centres in the Netherlands were identified using the hospital databases. We excluded patients receiving compassionate care. Diagnoses, clinical status and circumstances of death were sought from case notes and post mortem reports. Deaths were classified as of cardiac or non-cardiac origin. RESULTS: We identified 150 cases of SUD (89 male) at a median age of 2.3 years (range 18 days-18.9 years); 49/150 patients (33%) were