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Bruniaux, J. (1978). Thorax, 33,[72][73][74][75]. Ductus arteriosus sling. Report of a newly recognised anomaly and its surgical correction. Surgical exploration of a 7-week-old infant with a diagnosis of 'pulmonary artery sling' (left pulmonary artery arising from the right) revealed the true nature of the abnormality to be persistence of the ductus arteriosus which connected the right pulmonary artery to the aortic isthmus. This malformation has not been described previously. It has the same symptomatology as 'pulmonary artery sling' and it may be treated by surgical ligation and division. We suggest the term 'ductus arteriosus sling' to describe this rare congenital anomaly.Compression of the posterior aspect of the trachea by a left pulmonary artery arising from the right and passing between the trachea and oesophagus is now well documented (Binet and Langlois, 1977 (Grover et al., 1975). We can add a

Permanent pacemakers were implanted in 40 children aged one day to 17 years. A new technique, necessitating thoracotomy and lumbotomy, is described briefly. Indications were surgical block in 22 (55%) and congenital block in 18 (45%) patients. Five of 40 (12.5%) died. Reoperation was required 4 times: for electrode problems (3), and wound problem (one). No late infection or wire fractures were noted. The time paced ranged from 7 days to 37 months. All of these patients received lithium units.

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