Abstract
Background: Our aim is to analyze the correlation between severe thrombocytopenia and the diameter of patent ductus arteriosus (PDA) and residual shunt after PDA closure. Methods: The patients with severe thrombocytopenia (platelet count <50 × 10<sup>9</sup>/L) following transcatheter occlusion of a PDA from January 2010 to December 2018 in the Children’s Hospital of Chongqing Medical University were collected. And the high-risk factors, diagnosis, treatment, and prognosis of severe thrombocytopenia were analyzed. Results: A total of 1,581 children with transcatheter occlusion of a PDA were collected; 22 (1.39%) of the enrolled patients had severe thrombocytopenia. Further data analysis showed that the median diameter of PDA (6.7 [IQR: 1.63]) mm in children with severe thrombocytopenia was significantly larger than that in children without severe thrombocytopenia (3.6 ± 1.7 mm, p < 0.001). Furthermore, the incidence of thrombocytopenia in children with residual shunt after operation (10.9%) was significantly higher than that in children without residual shunt (0.2%, p < 0.001). The mean time of thrombocytopenia was found to be 2.4 ± 1.3 days after intervention. All patients with thrombocytopenia were treated by methylprednisolone with or without platelet transfusion and recovered without major organ hemorrhage. Conclusions: Severe thrombocytopenia following transcatheter occlusion of a PDA may be related to the larger diameter of PDA and residual shunt. If early detection of severe thrombocytopenia is obtained, our study supports a good prognosis if appropriate measures are implemented.
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