PubMed Health⌕ Search

Biomedical subjects

E Pérez-Castro Ellendt

Publications and source records attributed to E Pérez-Castro Ellendt.

At least 19 recordsLinked to original sources
PubMed2001

[Contact lithotripsy. Advantages and disadvantages].

OBJECTIVE: To review the different methods of contact lithotripsy by intracavitary direct contact or very close approximation of different rigid and flexible energy-transmitting devices (probes, fibers, etc.). METHODS: The systems commonly used, as well as those that have fallen into disuse or have not been developed further, are briefly described. RESULTS: Although no contact lithotripsy system is clearly superior over another, in our experience the electrokinetic system (Walz) is highly effective and simple to use. CONCLUSIONS: Contact lithotripsy permits stone disintegration and removal of fragments during the same surgical procedure. It improves the rate of completeness of stone removal and permits earlier functional recovery of the obstructed renal unit.

Humans↗
PubMed1996

[Extracorporeal shock wave lithotripsy (ESWL) in children: our experience in 1995].

OBJECTIVES: The present study reviews our experience and analyzes the results achieved with extracorporeal shock wave lithotripsy in the treatment of urinary calculi in children. METHODS: From 1985 to 1995, 36 children, with ages ranging from 5 months to 14 years, were treated by ESWL, and in some cases by combination therapy (percutaneous nepholithectomy and/or ureteroscopy). RESULTS: Excellent results were achieved in 74.9% of the patients; of these, 52.7% were stone-free 2 to 90 days after treatment. CONCLUSIONS: Extracorporeal shock wave lithotripsy is the treatment of choice in children with urinary lithiasis, although there are some exceptions. The method of evaluation and treatment in children are the same as in the adult patients.

Adolescent↗
PubMed1996

[Endourologic complication: endourologic resolution].

OBJECTIVES: To report an uncommon endourological complication that was also resolved by endourological methods. METHODS/RESULTS: We report on a patient with a right solitary kidney, radiolucent renal stone and an indwelling double-J catheter. While removing the double-J catheter after ESWL, it broke at the level of its distal third. The proximal two thirds remaining in the ureter were successfully removed by ureteroscopy after several attempts by ureteroscopy and percutaneous nephroscopy. CONCLUSIONS: Except for special circumstances, most of the endourological complications can be resolved by an endourological procedure.

Equipment Failure↗
PubMed1995

[Technics of ureteral endoscopic access].

OBJECTIVES: The present article briefly reviews the history of endoscopic access to the ureter, since visualization of the ureter was first attempted until the procedure was developed by Pérez-Castro in 1979. METHODS/RESULTS: The development of the rigid ureteroscopes, the difficulties arising from the anatomical structures during endoscopy that require ureteral dilatation, the anatomy of the juxtavesical segment of the ureter and the pathologies that may alter it, and the present and future indications of ureteral dilatation are discussed. Patient preoperative evaluation is briefly described and one of the techniques of ureteral dilatation is analyzed. Finally, a brief summary comparing the different techniques is given. CONCLUSIONS: The technique of choice for ureteral dilatation must be simple, easy to perform, low-cost and one which reduces the iatrogenic lesions and shortens the duration of hospital stay.

Dilatation↗
PubMed1995

[Memotherm as a therapeutic device in infravesical obstruction].

OBJECTIVE: To determine the efficacy of the intraurethral mesh in the treatment of infravesical obstruction in patients at high surgical risk unamenable to other treatment modalities. METHODS: We evaluated 13 patients with obstruction and at high risk for conventional surgery (TURP) who underwent insertion of the Memotherm intraurethral prosthesis. RESULTS: The procedure was performed rapidly with scant morbidity and the patients were discharged from the hospital early. Improvement, evaluated by the IPSS-L, was referred by 84.6% of the patients at 45 weeks follow up. Post-treatment improvement was evidenced by the absence of postvoiding residual urine at ultrasound in 69.2% of the patients and improved flowmetry in 84.6% of the patients. The early post-treatment complications included hematuria with irritative symptoms (80% of the patients). The mesh prosthesis had migrated in 15%, but could be repositioned. No case required removal of the prosthesis. CONCLUSIONS: This method affords a rapid and atraumatic solution for obstructed patients at high surgical risk. The material (heat sensitive nitinol) and the design of the mesh facilitate repositioning in the few cases in whom this had been required.

Aged↗
PubMed1991

The use of the Dornier MPL-9000 lithotripter in the treatment of gallbladder and renal stones. Early experience.

The experience of two units (Gastroenterology and Urology) of Clínica La Luz, Madrid, in the treatment of gallbladder and renal lithiasis using the Dornier MPL-9000 lithotripter is reported herein. This lithotriptor has been utilized in the treatment of all cases of gallbladder calculi for which it is indicated and renal calculi localized high up (kidney), and in those cases that are difficult to treat with other lithotriptors such as patients with kyphoscoliosis, radiolucent calculi, elderly patients, children, etc.). During the first year the gallstone lithotripsy unit was utilized, 401 patients were referred for treatment. Of these, 180 met the criteria for patient selection. (Over 360 have been treated to date.) Sixty of these 180 patients had a single gallstone of up to 2.5 cm. These 60 patients were selected for the study since they comprised a group where the best results could be expected. The aim of studying this patient group was to evaluate the results achieved by lithotripsy and the short and medium-term outcome in this ideal group of patients. Concerning renal lithiasis, these are the first 100 cases treated with the MPL-9000 (currently over 420 have been treated). Eighty cases had a single calculus (60 caliceal and 20 pyelic), 15 had multiple calculi, and 5 had a staghorn stone. Treatment for gallbladder and renal lithiasis was exclusively by shock waves; i.e., as monotherapy with no other auxiliary procedure. The average number of shock waves used was 2,350 with a mean kV of 18 for gallbladder lithiasis.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗