Involuntary cough is superior to voluntary cough for identifying stress urinary incontinence.

Introduction: Voluntary cough (VC) and the laryngeal expiration reflex (LER) provoke stress urinary incontinence (SUI). The aim of this article is to analyze the effectiveness of these stimuli on the timing of urinary leaks.

Material And Methods: Urodynamic testing using pressure catheters was performed on 123 subjects with history of SUI.

Inspiration closure reflex: the effect of respiration on intrinsic sphincters.

Introduction: The functions of the lower esophageal sphincter (LES) and internal urethral sphincter (IUS) have not been reported during voluntary and involuntary respiratory maneuvers.

Methods: In this study we performed a prospective barium videofluoroscopy study (BSV) of the LES on 4 healthy adult men during voluntary cough (VC), laryngeal expiration reflex (LER), breath-hold maneuvers, and normal inspiration. One subject had fiber-optic pressure catheters placed in the LES and IUS, and electromyographic recording of the right T7-8 intercostals during respiration.

Voluntary and reflex cough and the expiration reflex; implications for aspiration after stroke.

Aspiration is a common result of stroke, and may lead to lung infections and pneumonia. Cough may prevent this aspiration and thus prevent the pneumonia. We review the four types of cough usually used to assess aspiration risk: voluntary cough (VC), reflex cough (RC), the laryngeal expiration reflex (LER), and cough on swallow (CoS).