In the past Jacques G. Susset has collaborated on articles with Atsuo Kondo. One of their most recent publications is Physical properties of the urinary detrusor muscle: A mechanical model based upon the analysis of stress relaxation curve☆. Which was published in journal Journal of Biomechanics.

More information about Jacques G. Susset research including statistics on their citations can be found on their Copernicus Academic profile page.

Jacques G. Susset's Articles: (7)

Physical properties of the urinary detrusor muscle: A mechanical model based upon the analysis of stress relaxation curve☆

AbstractThe viscoelastic properties of dog urinary bladder have been quantitatively studied in vivo and in vitro. The thickness of the bladder wall was taken into consideration when the stress in the detrusor muscle was calculated. Thirty ml of saline were rapidly injected three times successively with an interval of three minutes. The force-deformation diagram was found to be a non-linear relationship. The relaxation curve could be analyzed into three exponential components. Subsequently, a mechanical model was formed, and its mathematical formulae were composed based upon the correlation between the length change of the Hooke elements and the volume increment. Four elastic constants, three time constants, and three viscous coefficients were measured respectively. The urinary bladder does not obey Hooke's law because of the specific configuration of collagen fibers. The quantitative evaluation of the physical properties of detrusor muscle can be utilized as a clinical diagnostic tool to supplement conventional cystometry.

Scientific articleEvolution of urinary flow rate with prostatectomy☆☆☆

AbstractUrinary flow rate was studied before and after transurethral prostatectomy in 53 patients. An average of 43.8 per cent improvement in maximum flow rate after transurethral prostatectomy was observed in this series. Improvement of maximum flow rate occurred in 71 per cent of patients. Half of the cases in which flow rate did not improve were chronic prostatitis. Uroflowmetry cannot be utilized as a quality index of a transurethral prostatic resection as long as the degree of detrusor deterioration is not assessed. There is a relationship between the degree of preoperative symptoms and the degree of postoperative urinary flow improvement. The degree of preoperative symptoms and urinary flow deviation are not related which suggests that uroflowmetry adds to the assessment of symptoms in the determination of the degree of obstruction. Patients presenting difficulty of urination have a greater chance to demonstrate urinary flow improvement after surgery than patients complaining of urinary frequency.

Urological Neurology and UrodynamicsBiofeedback Therapy for Female Incontinence due to Low Urethral Resistance

AbstractUrinary incontinence, mostly secondary to low urethral resistance, in 15 women was treated for 6 weeks by biofeedback. A new device equipped with visual and audio signals connected to an intravaginal probe was used by the patient for 15 minutes twice a day. Of the patients 12 were continent subjectively and objectively, 2 had 65 and 75% improvement and could lead a normal life, and only 1 failed to respond and was treated surgically. Besides the quality of the device, success depends largely on the quality of moral support given to the patient during the treatment.

Abnormal Urethral Compliance in Females Diagnosis, Results and Treatment Preliminary Study

AbstractWe measured urethral compliance in 57 patients using a catheter of increasing diameter. The measurement makes it possible to differentiate clearly between rigidity and hyperlaxity of the female urethra. In both instances, the initial pressure (P0) is lower than normal, but the rate of pressure increase (a), with larger catheter sizes, is significantly higher in cases of urethral rigidity and on the contrary parallel to normal in cases of hyperlaxity. This distinction allows for more accuracy in the determination of therapeutic indication. An inversely proportional correlation was found between the initial urethral pressure and the rate of pressure increase (r = 0.74). The initial pressure is generally lower in older women (r = 0.56).

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