In the 2017 American Heart Association (AHA) Kawasaki disease (KD) guidelines, risk levels (RLs) for long-term management are defined by both maximal and current coronary artery (CA) dimensions normalized as z-scores. We sought to determine the degree to which current recommended practice differs from past actual practice, highlighting areas for knowledge translation efforts. The International KD Registry (IKDR) included 1651 patients with CA aneurysms (z-score > 2.5) from 1999 to 2016. Patients were classified by AHA RL using maximum CA z-score (RL 3 = small, RL 4 = medium, RL 5 = large/giant) and subcategorized based on decreases over time. Medical management provided was compared to recommendations. Low-dose acetylsalicylic acid (ASA) use ranged from 86 (RL 3.1) to 95% (RL 5.1) for RLs where use was “indicated.” Dual antiplatelet therapy (ASA + clopidogrel) use ranged from 16% for RL 5.2 to 9% for RL 5.4. Recommended anticoagulation (warfarin or low molecular weight heparin) use was 65% for RL 5.1, while 12% were on triple therapy (anticoagulation + dual antiplatelet). Optional statin use ranged from 2 to 8% depending on RL. Optional beta-blocker use was 2–25% for RL 5, and 0–5% for RLs 3 and 4 where it is not recommended. Generally, past practice was consistent with the latest AHA guidelines, taking into account the flexible wording of recommendations based on the limited evidence, as well as unmeasured patient-specific factors. In addition to strengthening the overall evidence base, knowledge translation efforts may be needed to address variation in thromboprophylaxis management.
Bibliographical noteFunding Information:
There was no Grant funding for this study. Funding for the data coordinating center was partially provided by the CIBC Childrens Foundation Chair in Child Health Research (Brian McCrindle) and the Labatt Family Heart Centre at SickKids Hospital (Brian McCrindle). Additional local funding for participation in the International Kawasaki Disease Registry (IKDR) was provided by les Fonds BoBeau Coeur of the Ste-Justine Hospital Foundation (Nagib Dahdah), the McCance Family Foundation (Jane Newburger), and the Vella Fund (Jane Newburger).
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature.
- Coronary artery
- Kawasaki disease
PubMed: MeSH publication types
- Comparative Study
- Journal Article