Background: The importance of measuring blood pressure before morning micturition and in the afternoon, while working, is yet to be established in relation to the accuracy of home blood pressure monitoring (HBPM). Objective: To compare two HBPM protocols, considering 24-hour ambulatory blood pressure monitoring (wakefulness ABPM) as gold-standard and measurements taken before morning micturitio...

In the present study we examined the possibility that striated muscle activity may underlie sexually dimorphic micturition in rats. Micturition dynamics, the gross anatomy of the external urethral sphincter, and the participation of the striated perineal muscles in micturition were compared in urethane-anesthetized adult male and female rats. Bladder contraction characteristics, particularly th...

OBJECTIVE To evaluate the effect of the Valsalva maneuver (VM) during micturition on intraocular pressure (IOP) in patients with benign prostatic hyperplasia (BPH). PATIENTS AND METHODS IOP were measured before and during micturition in uroflowmetry testing by Tonopen-Avia (Reichert Inc., NY, USA) in 35 eyes of 35 patients with BPH. International Prostate Symptoms Score (IPSS) questionnaire w...

PURPOSE To characterize the electromyographic activity of abdominal striated muscles during micturition in urethane-anesthetized female mice, and to quantitatively evaluate the contribution of abdominal responses to efficient voiding. METHODS Cystometric and multichannel electromyographic recordings were integrated to enable a comprehensive evaluation during micturition in urethane-anesthetiz...

The lower urinary tract constitutes a functional unit controlled by a complex interplay between the central and peripheral nervous systems and local regulatory factors. In the adult, micturition is controlled by a spinobulbospinal reflex, which is under suprapontine control. Several central nervous system transmitters can modulate voiding, as well as, potentially, drugs affecting voiding; for e...

AIMS To summarize the changes that occur in the properties of bladder afferent neurons following spinal cord injury. METHODS Literature review of anatomical, immunohistochemical, and pharmacologic studies of normal and dysfunctional bladder afferent pathways. RESULTS Studies in animals indicate that the micturition reflex is mediated by a spinobulbospinal pathway passing through coordinatio...

OBJECTIVE cystometric evaluation of the bladder after autotransplant and isogeneic transplant in female rats. MATERIAL AND METHODS two groups were constituted: (A) bladder autotransplant with two subgroups: R1 - (control) and R2 - (bladder transplant); (B) isogeneic bladder transplant with three subgroups; T1 - (control); T2-T3, two subgroups observed for 30 and 60 days after transplant, resp...

The present study used a dual analysis of voiding behavior and reflex micturition to examine lower urinary tract function in transient receptor potential vanilloid (TRPV)1 knockout (KO) mice and TRPV4 KO mice. In metabolic cage experiments conducted under conscious conditions (i.e., voluntary voiding behavior), TRPV4 KO mice showed a markedly higher voiding frequency (VF; 19.3 ± 1.2 times/day) ...

In female Wistar/Rij rats, 10 and 30 mo old, the micturition profiles in conscious animals, the contractile responses of the isolated urinary bladder, and the histology of the vesical tissue have been investigated. During cystomanometry, 60% of conscious senescent rats, but only 25% of young adult rats, showed spontaneous contractions during the bladder-filling phase. In aging rats, micturition...

Physiology There is little difference of opinion on the main physiological points. The micturition centre in the sacral cord, opposite the twelfth dorsal and first lumbar vertebral bodies, controls the normal filling of the bladder, reacts to a stretch in the muscle and empties the bladder, though perhaps not quite completely, in one sustained contraction. The afferent and efferent impulses pas...