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Objective: To describe our experience of trans-catheter closure of small and large ducts using either the detachable Cook coils or the Amplatzer occluders at the Mater Hospital Nairobi.
Design: A descriptive retrospective cohort study.
Setting: The Mater Hospital, Nairobi, Kenya.
Subjects: Patients with clinical and echo-cardiographic features of patent ductus arteriosus who underwent cardiac catheterisation and angiography followed by device embolisation of the ductus.
Results: From April 1999 to October 2009 a total of ninety eight subjects were recruited into the study. Sixty nine (70%) of these subjects had the ducts closed using the Amplatzer devices, while twenty nine (30%) were embolised using the cook detachable coils. Three of the subjects in the coil group had the ducts embolised using the double technique while the rest were embolised using single coils. Various coil sizes four to eight millimetres were used in patients with small to medium ducts (two to seven millimetres) whereas the Amplatzer duct occluder was successfully used in all the duct sizes. The Amplatzer atrial septal occluder device was used to close very large ducts in two of the patients. The overall success rate was 93.1%, but the coil group had higher failure rate of 6.9% compared to the Amplatzer group of 3%. One patient in the Amplatzer group had a late embolisation requiring surgical retrieval at one month post occlusion. There were no mortalities.
Conclusion: Transcatheter device occlusion of PDA is a safe and alternative to surgery associated with minimal morbidity and no mortality