Which intervention is specific for improving lip strength in flaccid dysarthria treatment for cranial nerve VII?

• A. Intelligibility drills
• B. Intrusive Oral Pressure Instrument (IOPI)
• C. Phrasal emphasis techniques
• D. Respiratory muscle training

Answer: (B)

The Intrusive Oral Pressure Instrument (IOPI) is specifically designed to measure and improve oral and lip strength, making it an effective intervention for addressing issues related to flaccid dysarthria, particularly when involving cranial nerve VII, which controls facial muscles including those of the lips. The IOPI provides measurable feedback and resistance that encourages patients to engage and strengthen their lip muscles.

By using the IOPI in therapeutic exercises, clinicians can specifically target lip strength enhancement, which is crucial for improving functions such as articulation and overall speech intelligibility. This device allows for quantifiable progress and tailored treatment plans based on individual patient needs, ultimately leading to more effective management of flaccid dysarthria symptoms.

Other options, while valuable in a broader treatment context, do not specifically target lip strength. Intelligibility drills focus on overall speech clarity, phrasal emphasis techniques modify speech production for communicative effectiveness, and respiratory muscle training improves breath support for speech but does not directly address the strength of lip movements.