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.

说明利用套管脉充盈不佳血管穿刺时，行分次扎止血带和送管后松止血带可以提穿刺成功率。

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不佳血管穿刺时，行次扎止血带和送管后松止血带可以提穿刺功率。

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不佳血管穿刺时，行次扎止血带和送管后松止血带可以提穿刺功率。

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.

利用套管针在静脉充盈不佳血管穿刺时，行分次扎止血带和送管后松止血带可以提穿刺成功率。

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，行止血带和送管后松止血带可以提穿刺成功率。

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，行分次扎止血带和送管后松止血带可以提穿刺成功率。

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.

说明利用套针在静脉充盈不佳刺时，行分次扎止带和送后松止带可以提刺成功率。

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，分次扎止血带和送管后松止血带可以提穿成功率。

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.

说明利用套静脉充盈不佳血穿刺时，行分次扎止血带和送后松止血带可以提穿刺成功率。

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佳血管穿刺时，行分次扎止血带和送管后松止血带可以提穿刺成功率。