Biomedical subjects

Yuan-li Wang

Publications and source records attributed to Yuan-li Wang.

7 recordsLinked to original sources

PubMed2006

[Seminal parameter analysis in noninflammatory chronic prostatitis/chronic pelvic pain syndrome].

OBJECTIVE: To investigate seminal parameters in noninflammatory chronic prostatitis/chronic pelvic pain syndrome (CAP III B). METHODS: A total of 74 consecutive cases of patients who had been diagnosed as CAP III B and 46 cases of controls were included in the study. Severity of symptoms in men with CAP III B was defined according to the NIH Chronic Prostatitis Symptom Index (NIH-CPSI). All of them underwent a 'four glass-test' including leukocyte determination in expressed prostatic secretions (EPS), voided urine after prostatic massage (VB3) and ejaculate semen followed by analysis according to WHO. The analysis included seminal volume, pH, duration of liquefaction, sperm density, vitality, motility(a + b) and morphology. Correlations between the duration or the severity of symptoms and spermiogram results in patients with CAP III B were assessed respectively. RESULTS: The CAP III B group and the control group differed significantly in ejaculate volume, duration of liquefaction and motility, while the remaining parameters did not differ significantly. The duration of chronic pelvic pain showed apparently positive correlationship with liquefaction time, while the symptom duration negatively correlated with sperm motility. The NIH-CPSI score had no significant relationship with seminal volume, duration of liquefaction and sperm motility. CONCLUSION: Our results indicate that CAP III B can have a significant negative impact on sperm volume, liquefaction and motility. Our data also supports the results that the longer the duration of symptoms, the more influences on semen liquefaction and motility might be.

Adult↗

PubMed2004

[Comparative anatomical study of three surgical approaches for treating complex posterior urethral stricture].

OBJECTIVE: To evaluate the advantages and disadvantages of 3 surgical approaches via superior intermedial margin of the pubis, inferior medial margin of the pubis, and the perineum, respectively, in the treatment of posterior urethral stricture. METHODS: Thirty-five adult male corpses were dissected in which the distances from the bulbo-membranous urethra conjunction (D), the apex of prostate (E), and the bladder neck (F) to the superior medial margin of the pubis (A), the inferior medial margin of the pubis (B) and the midpoint of linear distance between the two ischial tuberosities on the perineum (C) were respectively measured and compared. Another 20 adult male corpses were subjected to the 3 surgical approaches as described above and the urethra was exposed to identify the tissues and organs with possible injuries resulted from the surgery, which were evaluated by scoring. RESULTS: The distances measured were as follows: AD=6.5+/-0.5 cm, BD=2.2+/-0.5 cm, CD =3.4+/-0.6 cm, and BD 0.05, t=0.13). The angles FAE (beta(1)) =(22.7+/-2.6)(degrees), FBE (beta(2))=(32.9+/-6.4)(degrees), FCE (beta(3))=(15.0+/-3.2)(degrees), and beta(2) beta(1) beta(3) (P=0.05, SNK means). The score for tissue and organ injuries for the approach of the superior medial margin of the pubis was 13, 20 for the approach of inferior medial margin of the pubis, and 15 for perineum approach. CONCLUSIONS: In terms of operative field exposure, the best operation approach is via the inferior pubis, followed by superior pubis approach and perineum approach; while in view of the injuries, superior pubis approach is better than the perineum and inferior pubis approaches. The inferior pubis approach should be the primary choice in the treatment of posterior urethral stricture.

Humans↗

PubMed2003

[Modified Mitchell's technique for repair epispadias with a report of 3 cases].

OBJECTIVE: To evaluate a modified Mitchell's technique for epispadias repair. METHODS: Three patients with epispadias were undergoing the treatment. It was performed to form a penile pedicled flap or scrotal mediastinum flap for the repair of the urethra and the urine was drained through a perined "U" shaped stent. RESULTS: All of the patients were successfully treated in one-stage with a good appearance and a matching opening of the urethra. CONCLUSION: The above mentioned technique could be a good method for epispadias repair.

Drainage↗

PubMed2003

[Application of multihole U-shaped drainage stent in complex posterior urethra surgery].

OBJECTIVE: To study a method for using a new drainage stent following complex posterior urethral operation. METHODS: Fifty-five patients,15 of whom had complex posterior urethrorectal fistula, 35 had complex posterior stricture or atresia, and 5 had bladder exstrophy, received surgical treatment, after which multihole U-shaped drainage stent was applied. RESULTS: All the patients were normal in micturition and no complications occurred during the follow-up period lasting for 1 to 10 years. CONCLUSION: Multihole U-shaped drainage stent performs the functions of both stenting and drainage, and is applicable in complex posterior urethral surgery.

Adolescent↗

PubMed2003

[Surgical techniques for the ureterointestinal anastomosis in continent urinary diversion].

OBJECTIVE: To compare the complications of direct and antirefluxing techniques of ureterointestinal anastomosis in continent urinary diversion. METHODS: Sixty-three patients underwent continent urinary diversion. Twenty-four patients were treated by the direct ureteroenteric anastomosis and the others treated by the antirefluxing technique. The follow up studies included following-up the information of ureteric stricture, ureteric reflux, renal function and acute urinary infection. It was assessed for 3 months to 6 years with a mean follow up of 26 months after operation. RESULTS: Of 78 ureters reimplanted using antirefluxing technique. A total of 12 ureters had anastomotic stricture formation postoperatively. Only one of 48 ureters reimplanted using direct anastomoses had anastomotic stricture. The difference between the direct and antirefluxing technique groups was remarkable (chi2 = 4.375, P < 0.05). Furthermore, there was no significant difference between the direct and antirefluxing technique groups in regard to ureteric reflux, renal function and acute urinary infection. CONCLUSIONS: Antirefluxing anastomoses resulted in obviously higher rate of ureterointestinal anastomotic stricture in comparison with the direct anastomosis. The direct ureteroenteric anastomosis may be the suitable choice for patients undergoing continent urinary diversion.

Adult↗

PubMed2003

[Modified Madigan prostatectomy].

OBJECTIVE: To improve Madigan prostatectomy (MPC) for a much satisfactory effect in open surgery. METHODS: A total of 52 patients with benign prostatic hyperplasia (BPH) were treated using MPC. The MPC procedure was modified by exposing anterior prostatic urethra near the bladder neck and conjunction with cystotomy. This modified procedure preserved prostatic urethra intact and could also deal with intracystic lesions at the same time. RESULTS: The intact of prostatic urethra was kept completely or almost for 48 cases. The hemorrhage amount during modified procedure was a less. The mean operative time was 120 minutes. The 35 patients had been followed up for 1 - 12 months. The average Qmax was 18.9 ml/s. The cystourethrography revealed that the urethra and bladder neck were intact in 8 patients postoperatively. Furthermore, the prostatic urethra was obviously wider after modified MPC. CONCLUSIONS: The modified MPC can reduce the urethra injury and enlarge the MPC indications. The modified technique is easy to perform with little complications and much more satisfactory clinical result. The modified MPC is highly recommended.

Aged↗

PubMed2002

[Diagnosis and treatment of adrenal medullary hyperplasia (with report of 8 cases)].

OBJECTIVE: To study the diagnosis and treatment of adrenal medullary hyperplasia (AMH). METHODS: An retrospective analysis of the clinical data of 8 patients with AMH admitted in our hospital from May 1998 to May 2002 were conducted with a review of the follow-up study. RESULTS: CT scanning of the adrenal gland showed unilateral abnormal appearance in all 8 cases. Diagnoses of AMH in 4 patients and pheochromocytoma in the other 4 patients were established before surgery. All the patients underwent unilateral adrenalectomy, among whom 7 were cured and 1 suffered recurrence 1 month after operation because of medullar hyperplasia in the contralateral adrenal gland. CONCLUSIONS: AMH should be differentiated from pheochromocytoma, especially from adrenal nodules shown by catecholamin assay. Definite diagnosis depends on pathological examination and surgical removal through abdominal approach is the best choice of treatment, in which both sides of the adrenal glands should be explored.

Adrenal Gland Neoplasms↗