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To study the impact of out-of-hours delivery on outcome for neonates with antenatally diagnosed transposition of the great arteries.
Setting
Tertiary paediatric cardiology centre (Yorkshire, United Kingdom), with co-located tertiary neonatal unit.
Patients
Neonates with antenatally diagnosed simple transposition of the great arteries delivered out-of-hours (Monday to Friday 17:00–08:00 and weekends) versus in-hours between 2015 and 2020.
Outcome
The primary outcome was survival to hospital discharge. Secondary outcomes included neurological morbidity, length of stay, and time to balloon atrial septostomy.
Results
Of 51 neonates, 38 (75%) were delivered out-of-hours. All neonates born in the tertiary centre survived to discharge. Time to balloon atrial septostomy was slightly longer for out-of-hours deliveries compared to in-hours (median 130 versus 93 mins, p = 0.33). Neurological morbidity occurred for nine (24%) patients in the out-of-hours group and one (8%) in-hours (OR 3.72, 95% CI: 0.42–32.71, p = 0.24). Length of stay was also similar (18.5 versus 17.3 days, p = 0.59). Antenatal diagnosis of a restrictive atrial septum was associated with a lower initial pH (7.03 versus 7.13; CI: 0.03–0.17, p = 0.01), longer length of stay (22.6 versus 17.3 days; CI: 0.37–10.17, p = 0.04), and increased neurological morbidity (44% versus 14%; OR 4.80, CI 1.00–23.15, p = 0.05). A further three neonates were delivered in surrounding hospitals, with a mortality of 67% (versus 0 in tertiary centre; OR 172, CI 5-5371, p = 0.003).
Conclusion
Neonates with antenatally diagnosed transposition of the great arteries have similar outcomes when delivered out-of-hours versus in-hours. Antenatal diagnosis of restrictive atrial septum is a significant predictor of worse outcomes. In our region, delivery outside the tertiary cardiac centre had a significantly higher risk of mortality.
Fetal cardiac intervention provides fetuses with certain cardiac anomalies, a greater likelihood of biventricular circulation and/or treatment options after delivery. Anesthesia care for mothers undergoing fetal cardiac intervention has evolved over the years and more recently involves the use of neuraxial anesthesia with sedation. The maternal fetal anesthesiologist caring for the patient undergoing fetal cardiac intervention should be conversant with the diagnosis, pathophysiology, and planned intervention. This is important for appropriate anticipation and treatment of hemodynamic changes that may occur in the fetus immediately following intervention.
This chapter discusses the twin-to-twin transfusion syndrome (TTTS) treatment options focusing on fetoscopic laser ablation of anastomoses. It also explains the benefits and risks associated with this treatment. Fetoscopic laser coagulation of placental vessels (FLCPV) is the only treatment addressing the pathophysiology of the syndrome as proven through a randomized controlled study against amnioreduction. Septostomy is based on a deliberate opening of the intertwin membrane with the needle in order to let the amniotic fluid flow freely between the two amniotic sacs. Even though two randomized trials have yielded similar survival rates between amnioreduction and septostomy, it has been abandoned by most teams. The superiority of laser treatment over amnioreduction was established through a randomized controlled study. The type of anesthesia has also evolved with time since the first interventions. Some teams still operate under general anesthesia although it is significantly associated with significant maternal morbidity.
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