Biomedical subjects

D M Gleason

Publications and source records attributed to D M Gleason.

5 recordsLinked to original sources

PubMed1979

Does the conventional cystogram exaggerate reflux?

We studied 35 patients with anterograde and retrograde cystography. Many patients who had reflux on retrograde cystography either did not have reflux or the reflux was reduced significantly on anterograde cystography. Furthermore, when reflux was seen on anterograde cystography it appeared to have more prognostic value than when seen on retrograde cystography. The question is raised of whether much reflex seen on retrograde cystography is not actually an artifact of the examination and does not exist beyond circumstances of the test.

Adolescent↗

PubMed1979

New techniques for the evaluation of bladder function.

The various techniques available for the dynamic assessment of bladder function, including uroflowmetry, cystometrography, urethral closure pressure profiles, and sphincteric electromyography are presented. All of these approaches are discussed in terms of the indications for their use and their functions in evaluation.

Electromyography↗

PubMed1977

Comparison of cystometrograms and urethral profiles with gas and water media.

Twenty-five female patients were studied using both gas and water media for custometrograms and urethral profiles. The results showed that gas and water did not generate equivalent data in either cystometrograms or urethral profiles. The cystometrogram data showed a high correlation of data between gas and water, with gas values consistently lower than water values. Urethral profile data with gas were very difficult to interpret in terms of water-generated data, and correlations were tenuous at best.

Carbon Dioxide↗

PubMed1976

Urodynamics.

The urinary tract is a hydrodynamic system whose components are in precise balance with each other and whose functioning depends on mechanical equilibrium. Alteration of the delicate balance between bladder and urethra means dysfunction in voiding or continence. Of greatest clinical interest at present is the bladder-urethra matching mechanism, which controls normal or abnormal voiding or continence. Since the matching combination of bladder and urethra must obey the same hydrodynamic laws that govern all fluid systems, it is obvious that measurement of fluid quantities and fluid porperties should correlate with function and dysfunction in the system. Urodynamics is the art of developing standard fluid-mechanical techniques that will be useful in routine clinical evaluation. Increasing experience with diagnostic urodynamic tests nurtures non-invasive, precise diagnosis of voiding dysfunction. Inexpensive, readily available and convenient techniques have been developed and are in clinical use. We can look forward to many more.

Aged↗

PubMed1976

Vesical neck suspension under vision with cystotomy enhances treatment of female incontinence.

Failure to surgically correct incontinence usually results from inadequate screening of patients with hyperreflexic incontinence, improper fixation of the urethra or yielding of tissues that have supported the repair. A surgical approach is described which fixes the bladder neck to the rectus tendon and adjacent pubic periosteum, under direct vision, through a cystotomy incision. The procedure achieves good continence in more than 90 per cent of the cases. Temporary postoperative voiding dysfunction occurred in about half of the patients.

Adult↗