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  • Title: Prostaglandin E2 after septostomy for simple transposition.
    Author: Beattie LM, McLeod KA.
    Journal: Pediatr Cardiol; 2009 May; 30(4):447-51. PubMed ID: 19083139.
    Abstract:
    In simple transposition of the great arteries (sTGA), balloon atrial septostomy is performed prior to arterial switch to improve mixing of systemic and pulmonary circulations. Following septostomy, some patients are also given prostaglandin E2 (PGE2) until surgical repair. The aims of our study were to identify how often PGE2 is given after septostomy, the indications for starting PGE2, and the effect this has on postoperative outcome. The study was a retrospective review of infants born with sTGA between 2000 and 2005, who underwent arterial switch at Yorkhill Children's Hospital, Glasgow. Over a 5-year period, 26 infants (16 male) with sTGA underwent septostomy. There was a significant rise in mean oxygen saturation following septostomy (mean, 61.4 +/- 11.5% before, 81.5 +/- 9.4% after; p < 0.05). Four of 26 (15%) did not receive PGE2 at all (group 1) and 8 of 26 (30%) received PGE2 before but not after septostomy (group 2). A total of 14 of 26 infants (54%) were given PGE2 following septostomy. This comprised 11 who received PGE2 before and after septostomy (group 3) and 3 who did not receive PGE2 prior to septostomy but did after (group 4). Groups 2 and 3 were compared directly, as they both received PGE2 before septostomy. In group 3, oxygen saturations were lower when PGE2 was started compared with saturations immediately after septostomy (45 +/- 23.6% vs. 80 +/- 10.3%; p < 0.05). Groups 2 and 3 showed no difference in atrial gap after septostomy (9.4 +/- 3 vs. 8 +/- 1 mm; p > 0.05). Fifty percent of infants in group 3 underwent echocardiography prior to restarting PGE2, which revealed a patent arterial duct in all but one patient. Despite PGE2, Group 3 had lower saturations at arterial switch compared with Group 2 (71 +/- 14% vs. 82 +/- 8%; p < 0.05). No difference was observed between group 2 and group 3 with regard to length of cardiopulmonary bypass (group 2, 173 +/- 101.4 min, vs. group 3, 157.9 +/- 42.1 min; p > 0.05). However, the Intensive Care Unit stay was longer for patients who received PGE2 following septostomy (8.5 +/- 10.3 vs. 5 +/- 0.93 days; p < 0.05). Total postoperative stay was also longer for infants who received PGE2 after septostomy (26.8 +/- 14.3 vs. 16.8 +/- 6.3 days; p < 0.05). In conclusion, the use of pulse oximetry has led to an increase in the administration of PGE2 after septostomy. PGE2 administration was associated with a longer ICU stay. The association between administration of PGE2 and longer postoperative stay supports the approach of early surgical repair with minimal preoperative medical intervention.
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