The original artificial valve must be large enough for the new valve to fit inside.
最初的人工瓣膜必须足够大，以使新瓣膜可以放入其中。
Children who had an artificial valve replacement may need to take anticoagulants (blood thinners) to prevent blood clots from forming on the artificial valve surfaces.
接受人造瓣膜置换的儿童需要服用抗凝药以防止血凝块在人造瓣膜表面上形成。
Children who had an artificial valve replacement may need to take anticoagulants (blood thinners) to prevent blood clots from forming on the artificial valve surfaces.
接受人造瓣膜置换的儿童需要服用抗凝药以防止血凝块在人造瓣膜表面上形成。
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