It shows that successfulness in puncturing can be more easily achived by applying tourniquets in several times and releasing the tourniquets after each cannulation when a less venosity appears.
说明利用套管针在静脉充盈不佳血管穿刺时，行分次扎止血带和
管后松止血带可以提高穿刺成功率。
It shows that successfulness in puncturing can be more easily achived by applying tourniquets in several times and releasing the tourniquets after each cannulation when a less venosity appears.
说明利用套管针在静脉充盈不佳血管穿刺时，行分次扎止血带和管后松止血带可以提高穿刺成功率。
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