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Query: UMLS:C0403608 (ureter)
 9,655 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A new device for the simultaneous in vivo measurement of pressure and developed force in the ureter is introduced. The 5-French catheter was cystoscopically inserted into the ureters of 12 dogs under anesthesia. The forms of the peristaltic waves for pressure and force show considerable differences. A basal force analogous to the basal pressure is only rarely measurable. During the systole, the developed force describes the pure muscle contraction process. The results are dependent on the location of the probe. Our new method is able to give information about the extent to which a ureter possesses the capacity to effectively close its lumen. This function, which is so decisive in urinary transport, can be determined not only qualitatively but also quantitatively.
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PMID:In vivo measurement of force in the ureter. I. Basics of a new measurement principle. 205 20

Stones in the proximal, mid and distal ureter in 375 consecutive patients were treated with extracorporeal shock wave lithotripsy (ESWL) in a technically unmodified Dornier HM3 lithotriptor without regional or general anesthesia. Adequate followup was available in 162 patients with proximal, 62 with mid and 146 with distal ureteral stones. The fraction of patients with stone-free ureters within 3 months after ESWL was 96, 97 and 97%, respectively. Of all patients only 13 (3.6%) had residual stones or fragments in the ureter after 3 months. The average number of ESWL sessions was 1.34 for all patients, and 1.36, 1.45 and 1.38 for those with proximal, mid and distal ureteral stones, respectively. A ureteral catheter with saline irrigation was used whenever it was possible to insert a ureteral catheter. Only 15 stones were pushed up to the kidney during catheterization and all other stones were treated in situ. There were more retreatments in patients in whom the stone had not been bypassed by a catheter at the initial ESWL session. During at least 1 treatment session 238 patients had a ureteral catheter with the tip above the stone. Approximately half of all patients were treated after only premedication with pethidine and diazepam, and cutaneous half of all patients were treated after only premedication with pethidine and diazepam, and cutaneous anesthesia with an anesthetic cream containing lidocaine-prilocaine (for proximal and mid ureteral stones). Small supplements of pethidine and diazepam were given to the other patients during the ESWL session. In situ ESWL of ureteral stones as described is a convenient, efficient and attractive procedure that, applied in a consequent manner, theoretically might result in a successful outcome in up to 98% of the patients.
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PMID:Anesthesia-free in situ extracorporeal shock wave lithotripsy of ureteral stones. 205 8

Thirty patients with inoperable diabetic angiopathies (degree III and IV concerning to Fontaine) were treated by means of percutanous radiofrequency thermolesion of the lumbar sympathetic chain (PRFS). All patients reported immediately after this procedure a distinct feeling of warmth in the treated leg. After a period of 6 month to two years 22 patients were re-examined clinically: Fifteen patients changed to Fontaine IIa and ten patients were free of further complaints. Also an improved wound healing and ulcer demarcation following amputation or skin transplantation was observed. The advantage of PRFS in comparison to the surgical sympathectomy is the fact that there is no general anesthesia necessary, which too minimizes the risk especially for the aged vascular patient. Moreover the patient can be mobilised immediately after the procedure. There were no complications like lesion of the ureter or the genitofemoral nerve as well as bleading into the psoas muscle as reported in percutanous chemical lesion of the sympathetic chain.
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PMID:[Percutaneous radio-frequency sympathetic block in peripheral circulatory disorders]. 207 69

The results for 143 cases of ureteral stones treated by EDAP LT01 were analyzed concerning stone location, ureteral manipulation and treatment position. The ureter was divided into six segments: ureteropelvic junction (UPJ), proximal ureter (PU1 and PU2), mid-ureter (MU), distal ureter (D1 and D2). The overall fracturization rate (FR) was 72%, as detailed below: UPJ (89%, 26/29), PU1 (86%, 13/15), PU2-MU (62%, 15/24), DU1 (59%, 25/42), DU2 (72%, 24/33). Anesthesia or iv sedation were never used for PEL. 24% of the patients underwent retrograde ureteral manipulation (in situ/push back = 108/35). For PU1, the FR was twice as high after retrograde manipulation (in situ/push back = 5/8). For PU2 and MU, the supine position was most common. For UPJ and PU1, it was often better to have the patient lie on his side. For DU1 and DU2, a prone position was necessary. For all stones in DU1, the bladder must be well filled; the FR was higher in DU2 than in DU1. DU2 stones appeared to adhere to the bladder wall or were intravesical (stone in the meatus). The stone-free rate for successfully manipulated ureteral calculi (3 month's follow-up) was 93% (27/29). The stone-free rate for in situ stones at 3 months was 94% (70/74). Extracorporeal piezoelectric lithotripsy combined with stone manipulation is highly efficient in the management of UPJ, PU1 and DU2 stones. The success rate of in situ PEL improves after the operator becomes skilled with the procedure. The advantages of the EDAP LT01 are the absence of pain, no need for anesthesia, and the mobility of the shock wave unit.
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PMID:[Extracorporeal piezoelectric lithotripsy (EDAP LT 01) in the treatment of ureteral calculi. Apropos of a series of 143 cases]. 221 7

Using the new Dornier lithotriptor MPL 9000* (multi-purpose lithotriptor) 381 treatments of urinary stones were performed from July 1988 to December 1989, 107 (28%) of them for ureteral calculi. Sonography enables stone localisation even in many cases where positioning by conventional x-ray fluoroscopy would not be possible. In 20 cases of upper ureteral stones, localization had to be performed partly by indirect measures, i.e. at the end of the dilated ureter. In 10 ureteral stones of the middle third sonographic positioning and complete disintegration was achieved. Treatment was without anaesthesia and was performed in a comfortable supine position. Therapy of 77 ureteral calculi in the caudal part--without anaesthesia--has proved extremely successful. Since it is less invasive than other measures (e.g. uretero-renoscopy or loop extraction), it is now the method of choice for the treatment of stones in the middle and lower third of the ureter.
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PMID:[Sonographic localization of ureteral calculi on extracorporeal shock wave lithotripsy]. 223 81

With Sonolith 3000, a new extracorporeal shock wave lithotriptor, we performed extracorporeal shock wave lithotripsy (ESWL) on 34 patients with upper urinary stones, including 5 patients with target stones of this clinical application in both sides. The 39 target stones in the 34 patients were located in the renal calyx (13 cases), renal pelvis (14 cases), renal calyx and pelvis (1 case), renal pelvis and ureter (1 case), and upper ureter (10 cases). The ultrasound-aiming system gave a satisfactory imaging of the target stones in 94.9% of cases (37/39 cases). During the ESWL treatment, 32 patients (94.2%) did not need anesthesia, but 2 patients (5.9%) needed epidural anesthesia because of intolerable pain and/or terror of pain. The average number of treatments per case was 2.08, and the average dose of shock waves per treatment was 3,691.1. The stone-free rate on the 14th, 42nd and 90th days after the last ESWL treatment were 28.2% (11/39), 51.3% (20/39) and 64.1% (25/39), respectively. Out of 39 cases, 31 cases (79.5%) were either stone-free or had only sand-like residual stones on the 90th day. Most cases had minimal side effects, such as transient macroscopic hematuria (100.0%), skin eruption (50.0%) and back pain (41.2%), but one case needed a 1,200 ml transfusion because of perirenal hematoma immediately after 1st session of ESWL treatment with 2,300 shock waves (13 kv). The serum total bilirubin level on 1st day after the last session of ESWL treatment was significantly increased when compared with the preoperative level, but the level was not significantly increased after the 1st session.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Clinical application of Sonolith 3000 type on extracorporeal shock wave lithotripsy for renal and ureteral stones]. 226 49

The authors report a series of twenty patients with pelvic ureteric stones treated by the Dornier lithotriptor. Sixteen men and 4 women were treated over a period of 8 months (November 1988 and June 1989). A single treatment session was sufficient to ensure destruction and elimination of the stones. This technique, which does not require anaesthesia, but at most simple neuroleptanalgesia, has a low morbidity (15%). In the series of 20 patients: the stones were completely eliminated in 16 cases, 1 case was a failure at 3 months and 3 patients were not reviewed. These results are assessed with a minimum follow-up of three months and a maximum follow-up of eight months. This simple, rapide, repeatable and effective therapeutic technique appears to constitute an alternative to operative endoscopy (flexible or rigid ureteroscopy) in the treatment of stones of the pelvic ureter.
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PMID:[The treatment of pelvic ureteral calculi using the Dornier lithotripter. Apropos of 20 cases]. 227 Sep 29

We report the results of the treatment of the first 50 patients with the EDAP lithotriptor at our center. The EDAP is a second generation lithotriptor that employs ultrasound imaging and piezo-electric energy stone fragmentation. Seventy-six percent of patients had kidney stones completely eliminated or residual no greater than 3 mL. Fourteen percent of patients had residual fragments which may require second treatment. Five stones showed no improvement, and 2 stones could not be imaged. Only 2 patients required anesthesia. One patient required hospitalization prior to treatment. The rest were treated as outpatients. This preliminary FDA-investigative study limited our protocol to stones of 0.5 cm to 2.5 cm within the kidney or proximal ureter. Since particles passed were so small, "steinstrasse phenomenon" (distal ureteral obstruction by stone fragments) was not encountered and routine stent placement was obviated. There were no major complications.
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PMID:Results of EDAP lithotriptor treatment of kidney stones in our first fifty patients. 229 15

We made clinical trials of the extracorporeal shock wave lithotripter (MEDSTONE-1000) in patients with upper urinary tract stones. Thirty-five cases (total 40 trials) treated during the period of October 1987 through March 1988 were enrolled in this study. The ages of the cases ranged from 22 to 65 (average 43.9) years old, comprising 23 men and 12 women. The site of presence of urinary tract stones was the renal pelvis and calyx in 28 cases and the upper ureter in 7 cases. The size of the stone was smaller than 1 cm in 15 cases, 1 to 2 cm in 12 cases, 2 to 3 cm in 7 cases and larger than 3 cm in 1 case. 13 patients with renal stones were treated with double-J stent catheter and all patients with ureteral stones were treated with the ureteral balloon catheter or flexible-tip ureteral catheter as preoperative manipulation. In 26 cases epidural anesthesia was used and the others were treated under general anesthesia. Stone targetting was determined by two oblique radiographs from separate axes. The intensity of shock waves was mainly 24 KV and the maximum shock wave counts to break up stones were 6800 shots. The size of the broken stone fragments was less than 2 mm in 24 cases (68.5%) and 2 to 5 mm in 10 cases (28.6%), which indicated that the procedure was very effective. However, one case in whom the stone could not be broken was with cystinuria. After three months the fragments completely passed in 22 cases (64.7%) and the residual fragments larger than 5 mm were left in 2 cases (5.9%).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Clinical experiences of 35 cases with upper urinary tract stones by extracorporeal shock wave lithotripter (MEDSTONE 1000)]. 230 15

In June 1988, the new type of the lithotripter MPL 9000 (Dornier), which was the first interdisciplinary lithotripter for treatment of urinary and biliary calculi, was installed at the Shakai Hoken Chukyo Hospital. MPL 9000 has some features which enable one to treat with low range of shock wave energy and without anesthesia due to the enlarged aperture of the ellipsoid (210 mm), and locate the stone by computerized two ultrasound probes (coaxial, lateral). Unlike HM-3, the water bath is not used: shock wave is shot through the water cushion. From June to November 1988, 35 patients suffering from 64 urinary calculi were treated. The majority represented caliceal (75%) and pelvic (17%) stones, whereas 5 calculi were treated in the upper and lower ureter. Twenty-four patients were treated in one session and 11 patients needed additional sessions. The given number of shock waves was between 1337 and 3050 per one session and averaged 2403 with low generator voltage (15-18 kv). Twenty sessions (42%) were given without any medication and other 28 sessions (58%) were under analgesia (Pentazocine, i.v.) for the pain complained during the treatment. The rate of successful disintegration (less than 5 mm) was 88%. After the 1-month followup, 47.1% were free of stone, and 62.1% were free after the 3-month. Four patients had arrhythmia and one patient was with a subcapsular renal hematoma. We have concluded that this lithotripter is useful to treat upper and lower urinary tract calculi, in particular radiolucent ones in high risk patients because it is applicable without anesthesia.
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PMID:[Clinical experience with ESWL with new Dornier lithotripter MPL 9000]. 232 21


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