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Jason Ooi

Publications and source records attributed to Jason Ooi.

4 recordsLinked to original sources
PubMed2006

Previous bladder outlet surgery does not affect medium-term outcomes after laparoscopic radical prostatectomy.

OBJECTIVES: To investigate the effect of previous bladder outlet surgery (BOS) on the peri-operative variables of patients having laparoscopic radical prostatectomy (LRP), as reported evidence as to whether BOS affects the outcome of RP is contradictory. PATIENTS AND METHODS: Of 600 consecutive patients attending for LRP from March 2000 to January 2006, 558 had had no surgery (NS) and 42 (7.0%) had a history of BOS (transurethral prostatectomy in 35, 5.8%; bladder neck incision in seven, 1.2%). All patients had clinical stage < or = T3aN0M0 prostate cancer and had their procedure performed or supervised by the same surgeon. RESULTS: Patients with previous BOS had a significantly greater age (mean 64.6 vs 61.8 years, P = 0.008), duration of catheterization (mean 13.7 vs 10.5 days, P = 0.003), proportion of pT3a tumours (16.7% vs 4.5%, P = 0.009) and potency rates at > or = 24 months (P < 0.001). Patients with previous BOS had a significantly lower body weight (mean 79.7 vs 83.0 kg, P = 0.05) and prostate weight (mean 46.7 vs 58.6 g, P = 0.01). Although patients with previous BOS had poorer continence at 3 months (61% vs 91%, P < 0.001), continence rates were similar in the two groups after this. CONCLUSION: Previous BOS does not affect the medium-term outcomes after LRP.

Aged↗
PubMed2006

Training model for open or laparoscopic pyeloplasty.

PURPOSE: To demonstrate the construction of a simple training model from reconfigured chicken skin to simulate open and laparoscopic reconstructive pyeloplasty. MATERIALS AND METHODS: Reconfiguring and suturing chicken skin dissected off its muscle creates a model of the ureteropelvic junction. Dismembered pyeloplasty techniques may be practiced with open or laparoscopic equipment. Students with prior training in suturing and knot-tying only used the open pyeloplasty model on three occasions. Urology trainees experienced in surgery but not laparoscopic pyeloplasty used the model laparoscopically. RESULTS: Students demonstrated a significant improvement (P < 0.05) between their first (17.00 +/- 4.44 minutes; mean +/- 95% CI) and third (11.33 +/- 2.40 minutes) attempts using the open model. Urology trainees improved their mean times from the first (18.0 minutes) to third (11.8 minutes) attempts using the laparoscopic model. CONCLUSIONS: This cheap and readily available model is reproducible and applicable to training in both open and laparoscopic pyeloplasty.

Animals↗
PubMed2006

Cystoscopy in women with recurrent urinary tract infection.

OBJECTIVE: To investigate if women with recurrent urinary tract infection (UTI) warrant cystoscopy to exclude an abnormality of the lower urinary tract. This is particularly relevant given that non-invasive imaging has often been performed to exclude abnormality. Our further aims were to correlate imaging and risk factors with cystoscopic findings to determine their predictive value in finding pathology. PATIENTS AND METHODS: A database of women undergoing cystoscopy with recurrent UTI has been maintained at our institution for 10 years. We retrospectively examined this and patient records for patient demographics, and investigative and operative data. RESULTS: A total of 118 patients (mean 55 years) having recurrent UTI (mean 4.7 infections/year) were available. There were nine patients (8%) with significant abnormalities at cystoscopy: urethral stricture (six), bladder calculus (one), bladder diverticulum (one) and colovesical fistula (one). The negative predictive value (NPV) of imaging was 99% and significant (P < 0.01). Women with no risk factors for UTI had a NPV of 93% for normal cystoscopy (P > 0.05). The positive predictive value was low for imaging and risk factors in predicting cystoscopy findings. CONCLUSIONS: In our study, 8% of women had significant abnormalities detected during cystoscopy with most over 50 years. Women without risk factors for recurrent UTI and with normal imaging could have a cystoscopy omitted. Younger women are less likely to have pathology and this must be factored into decisions to perform cystoscopy.

Adult↗