Displaying all 17 publications

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  1. Pue LB, Lo TS, Wu PY
    Int Urogynecol J, 2013 Nov;24(11):1985-7.
    PMID: 23430075 DOI: 10.1007/s00192-013-2060-8
    Vaginal vascular malformation (VVM) is rare. There are, in fact, less than ten cases reported to date. VVM often presents as a mass protruding from the vagina, mimicking pelvic organ prolapse (POP). It can coexist with POP, thereby usually exaggerating the severity of POP. We report a case of VVM in a premenopausal woman who presented as severe POP and urinary incontinence. The diagnosis was confirmed with computed tomography (CT) scan and angiography. The patient underwent conservative management with embolization. These procedures had to be repeated three times in 1.5 years due to lesion recurrence. In mitigation, conservative treatment eliminates the risks associated with surgery, e.g. massive hemorrhage and visceral injuries. It does, however, require a long course of treatment and follow-up.
  2. Lo TS, Pue LB, Tan YL, Wu PY
    Int Urogynecol J, 2016 Jun;27(6):923-31.
    PMID: 26700103 DOI: 10.1007/s00192-015-2912-5
    INTRODUCTION AND HYPOTHESIS: To study the outcomes following repeat midurethral sling (MUS) surgery in patients with persistent or recurrent stress urinary incontinence after failure of primary MUS surgery and risk factors for surgical failure.

    METHODS: The medical records of 24 patients who underwent repeat MUS surgery at a single tertiary center from January 2004 to February 2014 were reviewed. The types of MUS used for the repeat surgey were transobturator, retropubic and single incision slings. Objective cure was defined as no demonstrable involuntary leakage of urine during increased abdominal pressure in the absence of a detrusor contraction observed during filling cystometry, and subjective cure was defined as a negative response to Urogenital Distress Inventory six (UDI-6) question 3 during follow-up between 6 months and 1 year postoperatively. The change in the inclination angle between the urethra and pubic axis was measured with introital ultrasonography and the cotton swab test performed.

    RESULTS: The objective and subjective cure rates were 79.2 % and 75 %, respectively. There were no differences in demographics between the patients with failure of surgery and those with successful surgery. Significant independent risk factors for failure of repeat MUS surgery were a change in cotton swab angle at rest and straining of <30° (OR 4.6, 95 % CI 2.5 - 7.9°), a change in inclination angle of <30° (OR 4.6, 95 % CI 2.5 - 7.9°), intrinsic sphincter deficiency (OR 3.4, 95 % CI 1.8 - 6.1) and a mean urethral closure pressure of <60 cm H2O (OR 2.9, 95 % CI 1.5 - 4.5). In one patient the bladder was perforated.

    CONCLUSIONS: Repeat MUS surgery is safe and has a good short-term success rate, both objectively and subjectively, with independent risk factors for failure related to bladder neck hypomobility and poor urethral function.

  3. Lu BJ, Pue LB, Wu PY, Lo TS
    Low Urin Tract Symptoms, 2014 May;6(2):126-8.
    PMID: 26663554 DOI: 10.1111/luts.12030
    We highlight a case of chronic skenitis leading to the formation of Urethral diverticulum. A young nulliparous woman presented with dysuria, intermittent hematuria and a 3 cm cystic swelling adjacent to the left distal urethra. Aspiration of the cyst was done initially. Excisional biopsy was followed when it recurred. Urethral diverticulum was revealed when the excisional operation traced up to left distal urethral wall. The cystic swelling urethral diverticulum was completely enucleated.
  4. Pue LB, Lo TS, Wu PY, Tan YL
    J Obstet Gynaecol Res, 2014 Feb;40(2):611-3.
    PMID: 24245849 DOI: 10.1111/jog.12174
    Abdominal sacrocolpopexy is a well-established procedure for the reconstruction of apical support in pelvic organ prolapse. Its long-term efficacy is well known; however, it is also associated with higher perioperative morbidity when compared with the less invasive transvaginal approach. Long-term risk of bowel-related complication from abdominal sacrocolpopexy is rare, but can be significant as it is often serious and requires major surgical intervention. Here we highlight an unusual case of strangulated small bowel (in this instance complicated with sepsis secondary to peritonitis), 14 years after an abdominal sacrocolpopexy procedure. This example amplifies the need for proper preoperative counseling; also, life-long follow-up is necessary for patients undergoing this procedure.
  5. Lo TS, Tan YL, Cortes EF, Pue LB, Wu PY, Al-Kharabsheh A
    J Minim Invasive Gynecol, 2015 Jan;22(1):50-6.
    PMID: 25017520 DOI: 10.1016/j.jmig.2014.07.002
    To study the surgical and functional outcomes of single-incision mesh surgery for treatment of advanced pelvic organ prolapse (POP).
  6. Lo TS, Tan YL, Wu PY, Cortes EF, Pue LB, Al-Kharabsheh A
    PMID: 25265496 DOI: 10.1016/j.ejogrb.2014.09.015
    To evaluate the ultrasound morphology and its clinical outcome among women who had undergone Miniarc™ vs Monarc™ in the treatment of stress urinary incontinence (SUI).
  7. Lo TS, Tan YL, Cortes EF, Lin YH, Wu PY, Pue LB
    Aust N Z J Obstet Gynaecol, 2015 Dec;55(6):593-600.
    PMID: 26299981 DOI: 10.1111/ajo.12397
    To clinically and sonographically evaluate the influence of anterior vaginal mesh (AVM) surgery with concomitant mid-urethral sling surgery (MUS) for stress urinary incontinence (SUI).
  8. Lo TS, Cortes EFM, Wu PY, Tan YL, Al-Kharabsheh A, Pue LB
    Eur J Obstet Gynecol Reprod Biol, 2016 Mar;198:138-144.
    PMID: 26849040 DOI: 10.1016/j.ejogrb.2016.01.004
    OBJECTIVE: To evaluate the sonologic and clinical outcome of collagen coated (CC) versus non-collagen coated (NC) anterior vaginal mesh (AVM) for pelvic organ prolapse (POP) surgery.

    STUDY DESIGN: The study is a prospective observational study which included 122 patients who had symptomatic POP stage III and IV. AvaultaPlus™ (collagen coated, CC group) was compared to Perigee™ (non collagen coated, NC group). Introital ultrasound morphology, measure of neovascularization by color Doppler and clinical outcomes were assessed. Student t test was used for comparison of pre- and post-operation continuous data (p value of <0.05).

    RESULTS: A total of 110 (CC group=50, NC group=60) women completed the study. A woman in the CC group developed ureteral injury. Both groups had comparable morphologic and clinical outcomes however, the onset of changes in mesh thickness and neovascularization occurred earlier in the NC group (1 month) compared to the CC group (6 months to 1 year).

    CONCLUSION: CC group was comparable to the NC group in terms of erosion rate, ultrasound and clinical assessment. Collagen coating may induce delayed inflammatory response however may also delay tissue integration. The onset of changes in mesh thickness and neovascularization may give us an insight toward utilization of collagen coated mesh for host-tissue integration.

  9. Lo TS, Tan YL, Cortes EF, Wu PY, Pue LB, Al-Kharabsheh A
    Aust N Z J Obstet Gynaecol, 2015 Jun;55(3):284-90.
    PMID: 26044791 DOI: 10.1111/ajo.12340
    The Food and Drug Administration has recently highlighted an increase in reported complications associated with the use of transvaginal mesh.
  10. Lo TS, Pue LB, Hung TH, Wu PY, Tan YL
    J Obstet Gynaecol Res, 2015 Jul;41(7):1099-107.
    PMID: 25808989 DOI: 10.1111/jog.12678
    To evaluate and compare the long-term outcome of sacrospinous ligament fixation (SSF) in combination with various other compartment defect native tissue repairs with hysterectomy or hysteropexy.
  11. Lo TS, Al-Kharabsheh AM, Pue LB, Ng KL, Huang TX
    J Urol, 2020 10;204(4):787-792.
    PMID: 32898974 DOI: 10.1097/JU.0000000000001085
    PURPOSE: We evaluated mid urethral sling outcomes in overweight and obese patients compared to normal weight patients and identified risk factors for failure in this population.

    MATERIALS AND METHODS: Records of 688 women between January 2004 and July 2017 were retrospectively reviewed. Patients received urodynamic studies, 1-hour pad test, Urogenital Distress Inventory-6 and Incontinence Impact Questionnaire-7, and were divided into normal weight, overweight and obese. Objective cure at 1 year was defined as no involuntary urine leakage during filling cystometry and pad test less than 2 gm. Subjective cure was established by negative response to question 3 on Urogenital Distress Inventory-6. McNemar's test, chi-square test, Mann-Whitney U and Fisher's exact test were used for paired categorical variables. Independent samples t-tests and paired t-test were used for continuous parametric variables. Multivariate logistic regression was used to identify risk factors for failure.

    RESULTS: Objective and subjective cure in normal, overweight and obese patients was 91.4% and 89.1%, 87.5% and 86%, and 76% and 70.1%, respectively. There was no difference in surgical complications. Obese patients had worse quality of life scores preoperatively and postoperatively. Risk factors in obese patients with failed mid urethral sling included 66 years old or older (OR 2.02, 1.56-3.98), menopause (OR 4.21, 1.21-14.22), previous prolapse surgery (OR 4.57, 2.36-8.52), diabetes (OR 2.79, 1.61-5.99) and intrinsic sphincter deficiency (OR 5.06, 3.08-9.64).

    CONCLUSIONS: Obese women with mid urethral sling had lower objective and subjective cure at 1 year and worse quality of life scores compared to normal and overweight women. Risk factors for failure include age, diabetes, menopause, previous prolapse surgery and intrinsic sphincter deficiency.

  12. Lo TS, Tan YL, Pue LB, Chua S, Wu MP, Hsieh WC
    Int Urogynecol J, 2020 09;31(9):1949-1957.
    PMID: 32006069 DOI: 10.1007/s00192-019-04213-3
    INTRODUCTION AND HYPOTHESIS: Mixed urinary incontinence (MUI) is defined as symptomatic complaint of involuntary leakage associated with urgency and also with exertion, effort, sneezing or coughing. The paucity of research, especially on the surgical management of MUI, limits its best management.

    METHODS: This is a retrospective study to determine the outcomes of mixed urinary incontinence after mid-urethral sling surgery with two groups, urodynamic stress incontinence (USI) with urgency and urodynamic mixed urinary incontinence (MUI-UD; USI and detrusor overactivity [DO]).

    RESULTS: Ninety women (USI + urgency group) with preoperative USI and urgency and no demonstrable DO/DOI attained an objective cure of 82.2%, whereas the remaining 67 (MUI-UD group) women with both USI and DO/DOI were reported to have an objective cure of only 55.2%. Subjective cures were 81.1% and 53.7% respectively. The type of incontinence surgery does not affect postoperative outcomes in either of the groups. Demographic factors identified to have a significant negative effect on cure rates were postmenopausal status (p = 0.005), prior hysterectomy (p = 0.028), pre-operative smaller blafdder capacity (p = 0.001), and a larger volume of pre-operative pad test (p = 0.028). A lower mid-urethral closure pressure (MUCP) was significant with post-operative failure of treatment with MUI-UD group (68.8 ± 36.2 cmH2O vs 51.9 ± 24.7 cmH2O; p = 0.033).

    CONCLUSIONS: Although there is evidence for a good cure of the stress component of MUI, urodynamic investigation with its findings prior to management of MUI could have greater implications for selective patient centered counseling. Presence of DO or DOI on urodynamics resulted in poorer objective and subjective outcomes.

  13. Lo TS, Pue LB, Tan YL, Long CY, Lin YH, Wu PY
    Taiwan J Obstet Gynecol, 2016 Aug;55(4):519-24.
    PMID: 27590375 DOI: 10.1016/j.tjog.2015.12.019
    OBJECTIVE: Voiding dysfunction following a midurethral sling procedure is still a relevant consequence that can affect patients' quality of life. Various invasive methods have been described to manage this problem. We hypothesize that we if we could diagnose the condition early using noninvasive tools, we would be able to offer appropriate effective management. We sought to study the effectiveness of attaching a tension-releasing suture on a single-incision sling (SIS) tape as a prophylactic measure for the treatment of immediate postoperative voiding dysfunctions, and secondarily, to evaluate the objective and subjective cure rates of the treatment for stress urinary incontinence.

    MATERIALS AND METHODS: It is a prospective observational study. A tension-releasing suture was prepared by appending a polyglactin suture to one end of the MiniArc sling tip fiber, which could be used to manipulate the sling tip when postoperative voiding dysfunction was identified. Primary outcome measure was the number of patients requiring tension-releasing suture manipulation to treat postoperative voiding dysfunctions successfully.

    RESULTS: Twelve of the 131 (9.2%) patients who underwent SIS procedure for urodynamic stress incontinence surgery required tension-releasing suture manipulation due to voiding dysfunction during the immediate postoperative period with a good outcome. Postoperative overall objective and subjective cure rates were 90.5% and 88.9% (126 available patients at 1-year follow up, mean 19.2 ± 8.0 months), respectively. The subanalysis of the objective and subjective cure rates of the group with tension-releasing suture manipulation were 91.7% (11/12) and 91.7% (11/12), and those of the group without tension-releasing suture manipulation were 90.4% (103/114) and 88.6% (101/114), respectively, at 1-year follow up.

    CONCLUSION: Tension-releasing suture is effective in the management of immediate postoperative voiding dysfunction in an SIS procedure. SIS operation has good short-term objective and subjective cure rates for female urodynamic stress incontinence.

  14. Lo TS, Pue LB, Tan YL, Hsieh WC, Kao CC, Uy-Patrimonio MC
    Int Urogynecol J, 2019 07;30(7):1163-1172.
    PMID: 30008078 DOI: 10.1007/s00192-018-3691-6
    INTRODUCTION AND HYPOTHESIS: Our primary objective is to determine the presence of SUI at 6-12 months after surgery. The secondary objective is to determine the objective and subjective outcomes of POP.

    METHODS: A retrospective study conducted between February 2015 and July 2016 at Chang Gung Memorial Hospital. The subjects had had symptomatic anterior or apical prolapse with stage III or IV and undergone pelvic reconstructive surgery using Uphold™ LITE. Patients completed a 3-day voiding diary, urodynamic study, real-time ultrasonography and validated quality-of-life questionnaires at baseline and 12-month follow-up. Primary outcome was the absence of USI. Secondary outcomes included the objective cure rate of POP, ≤ stage 1 at the anterior/apical vaginal wall, and the subjective cure rate, negative feedback to POPDI-6.

    RESULTS: Ninety-five women were eligible. Six were excluded because of incomplete data. The postoperative de novo USI and SUI were 22.7 and 19.7%, respectively. There was significant improvement of USI in patients who had MUS insertion (93.8%) and bladder outlet obstruction (96.7%). The objective and subjective cure rate for prolapse was 95.5 and 94.3%, respectively. POP-Q measurements pre- and postoperatively were significantly improved at all points except for Gh and Pb. There was a significant difference in the distance between the bladder neck to the distal end of the mesh during straining both at both the postoperative 3rd month and 1 year.

    CONCLUSIONS: Uphold™ mesh has a 20% incidence of de novo USI with acceptable objective and subjective cure rates at 1 year postoperatively. The de novo USI rate was high but not bothersome enough to require surgery.

  15. Lo TS, Chua S, Tan YL, Patrimonio MC, Pue LB
    PLoS One, 2018;13(12):e0207375.
    PMID: 30513097 DOI: 10.1371/journal.pone.0207375
    OBJECTIVE: To compare the ultrasonographic positional changes of mid-urethral sling(MUS) tape in relation to symphysis pubis, and the different clinical outcomes among women who underwent MUS insertion with MiniArcTM or MonarcTM for the treatment of stress urinary incontinence 3 years after.

    MATERIALS AND METHODS: A retrospective follow-up study on patients with clinically confirmed stress urodynamic incontinence and urodynamic stress incontinence who had undergone MiniArc or Monarc surgery. Data regarding preoperative evaluation, intraoperative complications and post-operative follow-ups were collated. Main outcome is to determine the change in position of the sling through measurement of the x- and y-axis at rest and during Valsalva maneuver using the 3D introital ultrasound.

    RESULTS: A total of 138 patients were evaluated, 82 belonged to Monarc and 56 to MiniArc. At 3years, objective and subjective cure rates for MiniArc and Monarc were comparable (88%, 91%; p>0.05; 83%, 89%, p>0.05 respectively). Ultrasonographic changes between MiniArc and Monarc from 6 months to 3 years, showed MiniArc to exhibit significant movement in both x- [3.0 ±0.4 mm vs. 2.2 ±0.3 mm (p = 0.02) at rest; 2.6 ±0.3 mm vs. 1.6 ±0.3 mm (p<0.001) during valsalva] and y-axis [3.5 ±0.5 mm vs. 2.0 ±0.3 mm (p<0.001) at rest; 3.3 ±0.5 mm vs. 2.9 ±0.3 mm (p = 0.037) during Valsalva]. The mobility of MiniArc was significantly more than Monarc from rest to Valsalva (1.1 ±0.4 mm vs. 0.3 ±0.3 mm, p = 0.001). Tightness of the sling assessed from the major and minor axis of the urethral core had no significant difference in both groups at rest and during Valsalva. Urethral kinking percentage and the location of the sling did not yield statistical difference.

    CONCLUSION: Maintenance of continence rates of mid-urethral slings depends on the compressive effect of the sling on the urethra, urethral kinking, and sling fixation. From 6months to 3 years, MiniArc changed its position in both x- and y-axis over time, which the authors attribute to loosening of the anchoring mechanism since no clinical relevance could be sought.

  16. Lo TS, Al-Kharabsheh AM, Tan YL, Pue LB, Hsieh WC, Uy-Patrimonio MC
    Taiwan J Obstet Gynecol, 2017 Dec;56(6):793-800.
    PMID: 29241922 DOI: 10.1016/j.tjog.2017.10.016
    OBJECTIVE: To compare the clinical efficacy, recurrence, complications and quality of life changes 3 years after Elevate-A/single incision mesh surgery anterior apical (SIM A) and sacrospinous ligament fixation (SSF) in the management of pelvic organ prolapse (POP).

    MATERIALS AND METHODS: A prospective cohort study, 139 women, underwent transvaginal surgery for anterior and/or apical POP > stage 2, 69 patients had SIM A and 70 patients had SSF. The objective cure was defined as POP ≤ stage 1 anterior, apical according to POP-Q. Subjective cure is patient's negative feedback to question 2 and 3 of pelvic organ prolapse distress inventory 6 (POPDI-6). Patient's satisfaction was reported using validated quality of life questionnaires. Multi-channel urodynamic study was used to report any voiding problems related to the prolapse surgery 6 months after surgery.

    RESULTS: 119 patients completed a minimum of 3 years follow-up. 89.8% is the overall prolapse correction success rate for SIM A and 73.3% for SSF group (p = 0.020), and 96.6% versus 73.4% at the anterior vaginal compartment respectively (p ≤ 0.001). Statistically significant difference was noticed in apical compartment with 98.3% with SIM A and 85.0% with SSF (p = 0.009). The subjective success rate, 86.4% in the SIM A and 70.0% in the SSF arm (p = 0.030) was significantly noted. Only, Pelvic Organ Prolapse Distress Inventory-6 (POPDI-6) showed significant improvement. Operation time and intra-operative blood loss tend to be more with SIM A.

    CONCLUSION: SIM A has better 3 years objective and subjective cure rate than SSF in the anterior and/or apical compartment prolapse.

  17. Lo TS, Lin YH, Chu HC, Cortes EF, Pue LB, Tan YL, et al.
    J Obstet Gynaecol Res, 2017 Jan;43(1):173-178.
    PMID: 27762470 DOI: 10.1111/jog.13158
    AIM: By investigating the association of urodynamics and urogenital nerve growth factor (NGF) levels in vaginal mesh surgery, we may be able to associate the likelihood of postoperative lower urinary tract symptoms developing as a result of synthetic mesh implanted for pelvic floor reconstructive surgery.

    METHODS: Thirty-eight female Sprague-Dawley rats were divided into three groups: mesh, sham (no mesh), and control. Urodynamic study and NGF analysis of the urogenital tissues were done and results were compared among all groups. The urodynamic studies of the mesh and sham groups were further divided into the 4th and 10th days. A P-value 

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