What Does Electromyography Tell Us About Dyspareunia?

Area of Science:

• Neuroscience
• Sexual Medicine
• Pelvic Floor Physical Therapy

Background:

• Pelvic floor muscle (PFM) dysfunction is increasingly linked to dyspareunia (pain during vaginal penetration).
• Electromyography (EMG) is a key tool for assessing neuromuscular control and understanding PFM function in sexual health.
• Interpreting PFM EMG requires careful consideration of various influencing factors.

Purpose of the Study:

• To identify critical factors for evaluating PFM EMG in female sexual function and dyspareunia.
• To synthesize existing literature on PFM EMG acquisition and interpretation in this context.

Main Methods:

• A comprehensive literature search was conducted across Embase, CINAHL, PubMed, and PsycLit databases.
• Relevant articles were identified through searches and reference list reviews.
• Study outcomes were assessed based on appropriate EMG application and interpretation.

Main Results:

• Limited standards and no practice guidelines exist for PFM EMG acquisition and interpretation.
• Existing studies suggest potential PFM dysfunction in dyspareunia, with higher tonic activation and reflex responses in the superficial PFM layer.
• Data on the deep PFM layer's involvement in dyspareunia remains less conclusive.

Conclusions:

• Guidelines for PFM EMG application and interpretation in sexual function and dyspareunia are necessary.
• EMG data, when interpreted cautiously, offer valuable insights into PFM's role in dyspareunia.
• Current evidence indicates superficial PFM hyperactivity may characterize dyspareunia in some women.