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Biomedical subjects

D Igari

Publications and source records attributed to D Igari.

16 recordsLinked to original sources
PubMed1991

[Urethral indwelling catheter, intermittent self-catheterization and urinary infection].

Once a catheter has been passed into the bladder without contamination, there are several possible routes of subsequent infection during drainage period, such as: 1. Entry of bacteria alongside the catheter in the urethra. 2. Introduced bacteria adhered easily to the indwelling catheter and drainage system and colonized. 3. The catheter tip is covered rapidly by various nutrient materials which becomes a good culture medium of stuck bacteria, which is a supply source of bacteria into the bladder urine. 4. Although the motile bacilli ascend very slowly through the stagnant tube and no bacteria ascend against a slowly moving column, rapid transport of organisms occurs in the swirling fluid caused by the passage of rising air bubbles. 5. Continuous urethral catheter drainage permits an average residual urine volume of 7.3 ml. 6. The catheter destroys the antibacterial defense mechanisms of the urinary bladder. The reasons why in many cases of intermittent self-catheterization (CID) urine becomes sterile despite non-sterile procedure, are as follows. In addition to that CIC has none of the disadvantages of the indwelling catheter, it improves the vesical defense mechanisms deteriorated by high pressure voiding. The number of bacteria reintroduced during catheterization is relatively small and they can be eradicated by usual scheduled catheterization within 4-5 hours without residual urine. CIC must be started before trabeculation or diverticuli are formed, in which bacteria remain. Actual determination of residual urine volume after catheterization will help to prescribe a rational program of CIC.

Bacteria↗
PubMed1980

Clinical evaluation of inside echo patterns in gray scale prostatic echography.

Improved gray scale echograms in transrectal ultrasonography clearly can visualize the anatomical structure of and pathological changes in the prostatic gland. This study includes the classification of ultrasonic findings from the prostatic gland into acoustical pattern groups--solid, cystic and mixed--as well as into pathological-anatomical pattern groups--internal gland, external gland, nodule, stone and miscellaneous. The diagnostic accuracy of prostatic diseases using pattern analysis of prostatic inside echoes was 89 per cent, a 9 per cent improvement over that provided by conventional display.

Calculi↗
PubMed1979

Gray scale transrectal ultransonography of the prostate.

Gray scale transrectal ultrasongraphy provides refined visualization of the texture of the prostate and other intrapelvic organs. Diagnostic accuracy of the transrectal scan has been successfully registered at 91% in benign prostatic hyperplasia, 85% in cancer, 89% in prostatitis, and 88% in total prostatic scans. Furthermore, prostatic calculi were visible in the tomograms of both normal and abnormal prostates at a higher frequency than generally considered. Other applications of ultrasonic control, such as during transurethral resection or cryosurgery of the prostate and staging of bladder tumors, are profitable using the gray scale technique.

Calculi↗
PubMed1977

Staging of bladder tumors by means of transrectal ultrasonography.

Transrectal ultrasonography is a specially devised technique to obtain clear tomograms of the intrapelvic organs, such as the prostate, urinary bladder and seminal vesicles. We used this technique to evaluate 64 patients with bladder tumors. The results were compared with histological findings after exploratory surgery. Ultrasonograms of these tumors were estimated on the basis of bladder wall irregularity, bladder deformity, bladder capacity and extravesical spread of tumor. Each tumor stage showed characteristic ultrasonic features. Extravesical spread of tumor, which was observed in 67 percent of stage D tumors, proved to be an important finding to distinguish stage D tumours from other tumor stages. We suggest these features as diagnostic criteria for ultrasonic staging of bladder tumors.

Humans↗
PubMed1977

Mass screening program for prostatic diseases with transrectal ultrasonotomography.

A special chair-type apparatus for transrectal ultrasonotomography was developed in our laboratory 3 years ago. We did a mass screening program for prostatic disease, using this equipment as the primary study in the system. The 132 apparently normal men evaluated ranged in age from 40 to 76 years (mean 55.0). The 48 patients suspected of having prostatic disease underwent secondary studies, consisting of the usual urological examinations. Prostatic disease was detected in 24 cases, including 18 cases of benign prostatic hyperplasia. Thus, the model program revealed an extraordinarily high prevalence of latent prostatic disease among apparently normal older men.

Adult↗
PubMed1976

An evaluation of the function of new special equipment for transrectal ultrasonotomography.

A new type of equipment for transrectal ultrasonotomography was described in a previous paper. This equipment was evaluated from the data obtained from 205 cases in which examinations were performed. Tomograms were successfully recorded in 94% of cases. Tomograms sufficiently useful for diagnosis and the measurement of organs were obtained in 89% of cases for the prostate, 78% for the urinary bladder, and 80% for the seminal vesicles. No basic problems in the procedure were found, although hypotension of unknown origin was observed during the examination in a few cases.

Adolescent↗
PubMed1975

Transrectal ultrasonotomography of the prostate.

New equipment for transrectal ultrasonomography has been developed. Wth this equipment an excellent cross-section picture of various intrapelvic organs is easily obtained. Diagnostic application of the technique is particularly significant for abnormalities of the prostate because the shape of the prostate cannot be revealed by x-ray. Diagnostic criteria for prostatic disease are described, with the demonstration of typical cases. In a test by well trained physicians the diagnostic accuracy of the new technique was more than 80 per cent. Ultrasonotomography provided for precise measurement of prostatic size. Transrectal ultrasonotomography is a promising new diagnostic technique that yeilds abundant information not available with former methods of examination. The procedure is likely to become one of th most important diagnostic tools in the field of urology.

Male↗
PubMed1975

Volume estimation of the seminal vesicles by means of transrectal ultrasonotomography: a preliminary report.

The volume of the seminal vesicles was estimated in 27 cases by means of transrectal ultrasonotomography. The seminal vesicles of normal subjects were found to be generally larger than in cases of prostatic hypertrophy or cancer. The volume of the seminal vesicles in Klinefelter's syndrome was remarkably small. The correlation between the volume of the seminal vesicles and of the prostate is given.

Humans↗