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Introduction: Central venous access devices (CVAD) are used to facilitate intravenous treatment with coagulation factor concentrates (CFCs) in haemophilia A (HA). Guidelines for perioperative CFC replacement therapy are based on single centre experiences, and the length of replacement therapy varies. Aim: The aim of this study was to evaluate whether haemostasis coverage under four days is as effective and safe as a longer period of haemostatic coverage. Methods: We identified patients with severe HA without inhibitors or major bleeds within one month of the surgery who received their first CVAD. We compared the CFC consumption and bleeds between children with ≤4 and those who received 5–7 perioperative treatment days including the day of surgery. Bleeds were recorded up to 4 days after the end of perioperative haemostatic coverage. Results: In total, 144 children met the eligibility criteria and were included in the study cohort: 34 had received haemostatic coverage for ≤4 days, while 110 had received 5–7 days of haemostatic coverage. One bleed related to the surgery occurred in both groups. Conclusion: Overall, the bleeding complications were rare. Haemostatic coverage with CFCs under ≤4 days with elective CVAD insertions was as effective as coverage for ≥5 days. [ABSTRACT FROM AUTHOR]