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Biomedical subjects

K A Kropp

Publications and source records attributed to K A Kropp.

At least 37 records · Page 2Linked to original sources
PubMed1986

Urethral lengthening and reimplantation for neurogenic incontinence in children.

We describe our experience with a urethral lengthening-reimplantation operation for the correction of incontinence in 13 myelomeningocele children, 11 of whom had failed to achieve continence on a program of intermittent clean catheterization. The procedure involves lengthening the urethra by formation of a bladder tube, which is reimplanted back into the bladder through a submucosal tunnel. This procedure allows a catheter to be passed but prevents urine from leaking. All of the operated cases are included. All of the children are out of diapers and socially dry. Followup ranged from 8 to 36 months and the problems encountered are described.

Adolescent↗
PubMed1984

Percutaneous catheter drainage in treatment of urinary extravasation.

In the last two decades there has been a rapid growth in the percutaneous manipulation of the genitourinary tract. We would like to present 2 patients in whom CT-guided percutaneous drainage of urinary extravasation was employed successfully and review the pertinent literature.

Adult↗
PubMed1983

A retrospective analysis of the use of ureteral stents in children undergoing ureteroneocystotomy.

Ureteral reimplantation is used widely for the correction of ureterovesical reflux. To determine the effect of ureteral stents we reviewed the charts of 63 children undergoing ureteral reimplantation for reflux. Of this group 31 patients had the ureterovesical anastomosis stented while 32 did not. Morbidity and operative failure were comparable in both groups. Our results do not support the use of ureteral stents in patients undergoing ureteroneocystotomy for primary ureterovesical reflux.

Adolescent↗
PubMed1983

Surgical approaches to renal and ureteral calculi.

Surgery for the removal of renal or ureteral calculi can be made easier by the selection of the best surgical incision. After a discussion of preoperative considerations, the author describes the advantages and disadvantages of the surgical exposures for the removal of these stones.

Humans↗
PubMed1978

Role of renal biopsy in end stage renal failure.

The role of renal biopsy in 46 patients with end stage renal failure was assessed. Renal tissue was obtained by open renal biopsy in 24 patients, by needle biopsy in 5, and at bilateral nephrectomy in 17. In 4 patients the renal biopsy specimens showed advanced changes that could only be diagnosed as "end stage kidney". In 42 patients (91 per cent), a precise renal diagnosis was made. In 20 patients (43 per cent) the prebiopsy clinical impression differed from the histologic diagnosis. In the 29 patients undergoing renal biopsy, minor postoperative morbidity occurred in 5. We conclude that a renal biopsy in patients with end stage renal failure will result in a change in clinical diagnosis in a significant number of patients and can be performed with low morbidity.

Biopsy↗
PubMed1978

Enterobius vermicularis (pinworms), introital bacteriology and recurrent urinary tract infection in children.

The relationship between pinworm infectation and introital cultures was investigated in 2 groups of girls. Those children with recurrent urinary tract infections were compared to agematched controls who had never had a urinary tract infection. We found a higher incidence of enteric organisms on the introital area and pinworm ova on the perianal skin in the group of girls with recurrent infection.

Adolescent↗
PubMed1977

Use of methylene blue in suspected colovesical fistula.

Positive urine and blood assays of methylene and leukomethylene blue were obtained from 9 volunteers with normal colonic and renal function after a 100 ml, methylene blue enema (50 mg.). The study conclusively demonstrates that methylene blue is absorbed by rectal mucosa and excreted by the kidneys as a colored dye in the urine. Thus, intrarectal methylene blue cannot be used to confirm the diagnosis of a colovesical fistula.

Colonic Diseases↗
PubMed1977

The effects of vasectomy on the testis and accessory sex glands of the Hartley strain guinea pig.

The short term effects of bilateral vasectomy on the testis and the accessory sex glands of the guinea pig were compared with the effects of sham operation and unilateral vasectomy at 3, 5, 7, and 9 weeks after operation. The testis weights, sorbitol dehydrogenase activity, histology, epididymal sperm number, and motility were recorded. Accessory sex glands were weighed and chemically analyzed for fructose and citric acid content. The citric acid concentration of the dorsolateral prostate of the bilateral vasectomy group was significantly higher than concentrations in sham-operated and unilateral vasectomy groups at 3 weeks only. This may indicate transient hormonal derangement as a result of vasectomy. No significant differences were noted between testes of vasectomy and sham-operated groups. The unligated side testes of the unilateral vasectomy group were different from the testes of vasectomy and sham-operated groups. We conclude that interruption and ligation of the vas deferens itself has no effect on the testis of the guinea pig. Furthermore, all vasectomy experiments should include sham-operated controls.

Animals↗
PubMed1976

Torsion of the spermatic cord. An Experimental Study.

Twenty-eight Hartley strain guinea pigs were divided into three groups. Group I animals had their exteriorized testes torsed for a variable period of time until a bluish black color was maintained after detorsion. Group II and III animals served as controls. Testicular hormone function was estimated by analysis of accessory sex gland weights and citric acid and fructose content. Spermatogenesis was assessed by testicular histology and sorbitol dehydrogenase activity and epididymal sperm number and motility. No apparent effect on either spermatogenic or hormonal function of the guinea pig testis resulted from the torsion of the spermatic cord to the degree and length of time described.

Animals↗
PubMed1975

Side-to-side right renal artery-vena caval fistula. A new model for experimental hypertension.

A model for the investigation of blood pressure changes resulting from a renal arteriovenous (A-V) fistula is presented. After base line blood pressures were established in five adult mongrel dogs by carotid loop puncture, an A-V fistula was constructed between the right renal artery and vena cava. Weekly blood pressure determination showed a rise in systolic and diastolic pressure over control values. Split renal vein renins and split function studies were obtained at 3 months postfistula. Right nephrectomy at 6 months postfistula resulted in return of blood pressure readings to control values. Although no consistent pattern in the split renal vein renins and split function studies was seen, the data suggest that renin production may be responsible for the rise in systolic and diastolic blood pressure.

Animals↗