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1.Screening
1.1.Inclusion Criteria

age between 16-80

Yes

diagnosed by cranial CT or MRI; correspondence with symptoms

Yes

conscious and cooperate to the treatment

Yes

dysphagia

Yes

VFSS confirm the diagnose of crocopharyngeal dysfunction

Yes

approval has been required

Yes

1.2.Exclusion Criteria

infection

No

medicine abuse or taking anticoagulants

No

any disease that influence the result of the study

No

wound on the injection location

No

No

history of CP muscle myotomy

No

pregnant or lactating woman

No

2.Baseline
2.1.General information

full name

WBL

gender

Male

age

70

diagnosis

脑干梗死

duration

2m

past medical history

高血压病

2.2.Physical examination

functional oral intake scale,FOIS

3

Standardized Swallowing Assessment, SSA

31

Dysphagia Outcome SeverityScale, DOSS

3

2.4.the opening percentage of the CP muscle

opening percentage of CP muscle by VFSS

50%

2.8.penetration-aspiration scale (PAS)

penetration-aspiration scale, PAS

2

2.9.SpO2

SpO2 during the dilatation

3.In the process of the treatment
3.1.Treatment Record
4.One week after the treatment
4.1.Physical examination
4.2.Functional oral intake scale (FOIS)

functional oral intake scale,FOIS

3

4.3.Standardized Swallowing Assessment(SSA)

Standardized Swallowing Assessment, SSA

29

4.4.ARD
5.Follow-up 2weeks after the treatment
1.Functional oral intake scale (FOIS)

functional oral intake scale,FOIS

4

2.Standardized Swallowing Assessment (SSA)

Standardized Swallowing Assessment, SSA

29

5.3.ARD
6.One month after the treatment
6.1.Functional oral intake scale(FOIS)

functional oral intake scale,FOIS

5

6.2.Standardized Swallowing Assessment (SSA)

Standardized Swallowing Assessment, SSA

23

6.3.Dysphagia Outcome SeverityScale(DOSS)

Dysphagia Outcome SeverityScale, DOSS

6

6.4.the opening percentage of CP muscle

opening percentage of CP muscle by VFSS

70%

6.5.penetration-aspiration scale (PAS)

penetration-aspiration scale, PAS

2

6.6.ARD
7.3 months after the treatment
7.1.Functional oral intake scale(FOIS)

functional oral intake scale,FOIS

6

7.2.Standardized Swallowing Assessment (SSA)

Standardized Swallowing Assessment, SSA

20

7.3.Dysphagia Outcome SeverityScale(DOSS)

Dysphagia Outcome SeverityScale, DOSS

6

7.4.the opening percentage of CP muscle

opening percentage of CP muscle by VFSS

100%

7.5.penetration-aspiration scale (PAS)

penetration-aspiration scale, PAS

1

7.6.ARD