Displaying publications 1 - 20 of 34 in total

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  1. Dietz HP, Chatel C, Atan IK
    Int Urogynecol J, 2018 May;29(5):703-707.
    PMID: 28733790 DOI: 10.1007/s00192-017-3410-8
    INTRODUCTION AND HYPOTHESIS: Pelvic organ prolapse (POP) commonly presents with a "vaginal lump or bulge" and/or a "dragging sensation." The first symptom correlates strongly with clinical and imaging data. However, a "dragging sensation" may be less specific. Hence, we investigated the predictive value of both symptoms for POP.

    METHODS: This was a retrospective study involving archived data sets of women seen between November 2013 and May 2014. All underwent a clinical interview, POPQ examination, and 4D translabial ultrasound (TLUS). The main outcome measure was organ descent on clinical examination and TLUS. Offline analysis for organ descent was undertaken blinded against all other data.

    RESULTS: A total of 224 women were assessed. Mean age was 57 (23-84) years. Median parity was 3 (0-7). Ninety-three percent (n=208) were vaginally parous. Fifty-eight percent (n=129) complained of symptoms of prolapse: 49% (n=110) of a vaginal lump, 27% (n=61) of a dragging sensation. Clinically, mean point B anterior (Ba) was -0.86 (-3 to +7.5) cm, mean cervical station (C) was -4.1 (-9 to +8) cm, mean point B posterior (Bp) was -1.1 (-3 to +5) cm. On imaging, mean bladder, uterine, and rectal descent were -8.3 (-68.0 to 34) mm, +18.6 (-56.4 to 46.3) mm, and -5.3 (-39.8 to 36) mm respectively. On univariate analysis, both symptoms were strongly associated with objective prolapse clinically and on TLUS, with "vaginal lump" consistently the stronger predictor.

    CONCLUSIONS: The symptom of a "vaginal lump or bulge" was consistently a stronger predictor of objective POP than "dragging sensation." This finding was insensitive to adjustments for potential confounders. However, a "dragging sensation" is clearly a symptom of prolapse.

  2. Guzman Rojas R, Kamisan Atan I, Shek KL, Dietz HP
    Int Urogynecol J, 2016 Jun;27(6):939-44.
    PMID: 26670577 DOI: 10.1007/s00192-015-2914-3
    INTRODUCTION AND HYPOTHESIS: Symptoms of obstructive defecation (OD) are common in women. Transperineal ultrasound (TPUS) has been used for the evaluation of defecatory disorders. The aim of our study was to determine the overall prevalence of anatomical abnormalities of the posterior compartment and their correlations with OD in women seen in a tertiary urogynecology clinic.

    METHODS: This is a retrospective study on 750 women seen at a tertiary urogynecological unit who had undergone a standardized interview, clinical examination, and 4D TPUS. Univariate and multivariate logistic regression analyses were undertaken to study the association between examination findings and symptoms of OD. This study was approved by the local human research ethics committee (Nepean Blue Mountains Local Health District Human Research Ethics Committee, IRB approval no. 13-16).

    RESULTS: The datasets of 719 women were analyzed. Mean age was 56.1 (18.4-87.6) years. Ninety-seven patients (13 %) reported fecal incontinence, 190 (26 %) constipation, and 461 (64 %) symptoms of OD. On examination, 405 women (56 %) were diagnosed with significant posterior compartment prolapse (POP-Q ≥ stage 2), which was associated with symptoms of OD (p 

  3. Guzmán Rojas RA, Kamisan Atan I, Shek KL, Dietz HP
    Ultrasound Obstet Gynecol, 2015 Sep;46(3):363-6.
    PMID: 25766889 DOI: 10.1002/uog.14845
    To determine the prevalence of evidence of residual obstetric anal sphincter injury, to evaluate its association with anal incontinence (AI) and to establish minimal diagnostic criteria for significant (residual) external anal sphincter (EAS) trauma.
  4. Trutnovsky G, Kamisan Atan I, Martin A, Dietz HP
    BJOG, 2016 Aug;123(9):1551-6.
    PMID: 26435045 DOI: 10.1111/1471-0528.13692
    OBJECTIVE: To analyse the associations between delivery mode and symptoms and signs of pelvic organ prolapse (POP) in a cohort of symptomatic women.

    DESIGN: Retrospective observational study.

    POPULATION: A total of 1258 consecutive women attending a tertiary urogynaecological unit for the investigation of lower urinary tract or pelvic floor disorders between January 2012 and December 2014.

    METHODS: Obstetric history and clinical examination data were obtained from the unit database. Prolapse quantification on imaging was performed using stored four-dimensional translabial ultrasound volume data sets. Women were grouped into four groups according to the most traumatic delivery reported. The presence of symptoms and signs of POP were compared between delivery groups while controlling for potential confounders.

    MAIN OUTCOME MEASURES: Prolapse symptoms, visual analogue score for prolapse bother, International Continence Society Prolapse Quantification System findings and ultrasound findings of anterior, central and posterior compartment descent.

    RESULTS: Nulliparae showed the lowest prevalence of most measures of POP, followed by women exclusively delivered by caesarean section. Highest prevalences were consistently found in women delivered at least once by forceps, although the differences between this group and women delivered by normal vaginal delivery and/or vacuum extraction were significant in three out of eight measures only. Compared with women in the caesarean section group, the adjusted odds ratios for reporting symptoms of prolapse were 2.4 (95% CI 1.30-4.59) and 3.2 (95% CI 1.65-6.12) in the normal vaginal delivery/vacuum extraction group and forceps group, respectively.

    CONCLUSIONS: There is a clear link between vaginal delivery and symptoms and signs of pelvic organ prolapse in urogynaecological patients.

    TWEETABLE ABSTRACT: Compared with caesarean section a history of vaginal delivery more than doubles the risk for POP.

  5. Paka C, Atan IK, Dietz HP
    Tech Coloproctol, 2016 Feb;20(2):123-8.
    PMID: 26573810 DOI: 10.1007/s10151-015-1397-z
    Patient self-report is important in the assessment of the impact of anal incontinence (AI) on quality of life. This study aimed to (1) determine the correlation between total St. Mark's Incontinence Score (SMIS) and a single-item visual analogue scale (VAS) for bother from AI, and (2) determine the correlation between individual components of SMIS and VAS.
  6. Kamisan Atan I, Shek KL, Langer S, Guzman Rojas R, Caudwell-Hall J, Daly JO, et al.
    BJOG, 2016 May;123(6):995-1003.
    PMID: 26924418 DOI: 10.1111/1471-0528.13924
    Vaginal childbirth may result in levator ani injury secondary to overdistension during the second stage of labour. Other injuries include perineal and anal sphincter tears. Antepartum use of a birth trainer may prevent such injuries by altering the biomechanical properties of the pelvic floor. This study evaluates the effects of Epi-No(®) use on intrapartum pelvic floor trauma.
  7. Oversand SH, Atan IK, Shek KL, Dietz HP
    Ultrasound Obstet Gynecol, 2016 May;47(5):642-5.
    PMID: 25989530 DOI: 10.1002/uog.14902
    OBJECTIVE: To assess the association between clinical and sonographic measures of pelvic floor muscle (PFM) function and symptoms of urinary and anal incontinence (AI).

    METHODS: This was a retrospective study of women seen at a tertiary urogynecological unit. All women had undergone a standardized interview, clinical examination including Modified Oxford Scale (MOS) grading, urodynamic testing and four-dimensional translabial ultrasound (TLUS). Cranioventral shift of the bladder neck (BN) and reduction in the hiatal anteroposterior (AP) diameter were measured using ultrasound volumes acquired on maximal PFM contraction, blinded against all clinical data.

    RESULTS: Data from 726 women with a mean age of 56 ± 13.7 (range, 18-88) years and a mean body mass index of 29 ± 6.1 (range, 17-55) kg/m(2) were analyzed. Stress (SI) and urge (UI) urinary incontinence were reported by 73% and 72%, respectively, and 13% had AI. Mean MOS grade was 2.4 ± 1.1 (range, 0-5). Mean cranioventral BN shift on TLUS was 7.1 ± 4.4 (range, 0.3-25.3) mm; mean reduction in AP hiatal diameter was 8.6 ± 4.8 (range, 0.3-31.3) mm. On univariate analysis, neither MOS nor TLUS measures were strongly associated with symptoms of urinary incontinence or AI; associations were non-significant except for BN displacement/SI (7.3 mm vs 6.5 mm; P = 0.028), BN displacement/UI (6.85 vs 7.75; P = 0.019), hiatal AP diameter/AI (9.6 mm vs 8.5 mm; P = 0.047) and MOS/SI (2.42 vs 2.19; P = 0.013).

    CONCLUSIONS: In this large retrospective study we did not find any strong associations between sonographic or palpatory measures of PFM function and symptoms of urinary incontinence or AI. Copyright © 2015 ISUOG. Published by John Wiley & Sons Ltd.

  8. Hai-Ying C, Guzmán Rojas R, Hall JC, Atan IK, Dietz HP
    Int Urogynecol J, 2016 Feb;27(2):229-32.
    PMID: 26264476 DOI: 10.1007/s00192-015-2813-7
    INTRODUCTION AND HYPOTHESIS: Obstructed defecation is a common symptom complex in urogynaecological patients, and perineal, vaginal and/or anal digitation may required for defecation. Translabial ultrasound can be used to assess anorectal anatomy, similar to defecation proctography. The aim of the present study was to determine the association between different forms of digitation (vaginal, perineal and anal) and abnormal posterior compartment anatomy.

    METHODS: A total of 271 patients were analysed in a retrospective study utilising archived ultrasound volume datasets. Symptoms of obstructed defecation (straining at stool, incomplete bowel emptying, perineal, vaginal and anal digitation) were ascertained on interview. Postprocessing of stored 3D/4D translabial ultrasound datasets obtained on maximal Valsalva was used to diagnose descent of the rectal ampulla, rectocoele, enterocoele and rectal intussusception at a later date, blinded to all clinical data.

    RESULTS: Digitation was reported by 39 % of our population. The position of the rectal ampulla on Valsalva was associated with perineal (p = 0.02) and vaginal (p = 0.02) digitation. The presence of a true rectocoele was significantly associated with perineal (p = 0.04) and anal (p = 0.03) digitation. Rectocoele depth was associated with all three forms of digitation (P = 0.005-0.02). The bother of symptoms of obstructed defecation was strongly associated with digitation (all P 

  9. Oversand SH, Atan IK, Shek KL, Dietz HP
    Int Urogynecol J, 2015 Dec;26(12):1777-81.
    PMID: 26249237 DOI: 10.1007/s00192-015-2793-7
    INTRODUCTION AND HYPOTHESIS: We aimed to compare palpatory and translabial ultrasound (TLUS) measurements of pelvic floor muscle (PFM) function with symptoms and signs of female pelvic organ prolapse (FPOP) to determine a possible association.

    METHODS: We analysed data from 726 women with a mean age of 56 (SD 13.7, range 18-88) years, seen for symptoms of pelvic floor dysfunction between August 2011 and April 2013. The examination included a standardised interview and clinical assessment of FPOP with Pelvic Organ Prolapse Quantification (POP-Q) measurements, Modified Oxford Scale (MOS) grading and 4D TLUS.

    RESULTS: Symptoms of prolapse were reported in 51.4% (373 out of 726) with a mean bother score of 5.8 (SD 2.91, range 0-10). A clinically significant POP (Incontinence Society [ICS]-POP-Q stage ≥ 2) in any compartment was diagnosed in 77.1%. Mean MOS was 2.4 (SD 1.1, range 0-5). Significant POP on TLUS was seen in 54.6% (389 out of 712). TLUS volumes at rest and on maximal PFM contraction were analysed on a desktop PC, to assess the degree of bladder neck (BN) cranioventral shift and levator antero-posterior (AP) diameter reduction, blinded against other data. Mean cranioventral BN shift was 7.11 (SD 4.36, range 0.32-25.32) mm and mean levator AP diameter reduction was 8.6 (SD 4.8, range 0.3-31.3) mm. MOS was strongly associated with subjective and objective POP (P ≤ 0.001), whereas this was not true for TLUS measurements of tissue displacement.

    CONCLUSION: The MOS seems to be a more valid measure of PFM function than sonographically determined BN displacement or reduction of hiatal AP diameter observed on PFM contraction.

  10. Guzmán Rojas R, Kamisan Atan I, Shek KL, Dietz HP
    Aust N Z J Obstet Gynaecol, 2015 Oct;55(5):487-92.
    PMID: 26172410 DOI: 10.1111/ajo.12347
    Rectocele is a herniation of the anterior wall of the rectal ampulla through a defect in the rectovaginal septum causing protrusion of the posterior vaginal wall. Common symptoms include symptoms of prolapse and obstructed defecation.
  11. Caudwell-Hall J, Kamisan Atan I, Guzman Rojas R, Langer S, Shek KL, Dietz HP
    Am J Obstet Gynecol, 2018 10;219(4):379.e1-379.e8.
    PMID: 30063899 DOI: 10.1016/j.ajog.2018.07.022
    BACKGROUND: Trauma to the perineum, levator ani complex, and anal sphincter is common during vaginal childbirth, but often clinically underdiagnosed, and many women are unaware of the potential for long-term damage.

    OBJECTIVE: In this study we use transperineal ultrasound to identify how many women will achieve a normal vaginal delivery without substantial damage to the levator ani or anal sphincter muscles, and to create a model to predict patient characteristics associated with successful atraumatic normal vaginal delivery.

    STUDY DESIGN: This is a retrospective, secondary analysis of data sets gathered in the context of an interventional perinatal imaging study. A total of 660 primiparas, carrying an uncomplicated singleton pregnancy, underwent an antepartum and postpartum interview, vaginal exam (Pelvic Organ Prolapse Quantification), and 4-dimensional translabial ultrasound. Ultrasound data were analyzed for levator trauma and/or overdistention and residual sphincter defects. Postprocessing analysis of ultrasound volumes was performed blinded against clinical data and analyzed against obstetric data retrieved from the local maternity database. Levator avulsion was diagnosed if the muscle insertion at the inferior pubic ramus at the plane of minimal hiatal dimensions and within 5 mm above this plane on tomographic ultrasound imaging was abnormal, ie the muscle was disconnected from the inferior pubic ramus. Hiatal overdistensibility (microtrauma) was diagnosed if there was a peripartum increase in hiatal area on Valsalva by >20% with the resultant area ≥25 cm2. A sphincter defect was diagnosed if a gap of >30 degrees was seen in ≥4 of 6 tomographic ultrasound imaging slices bracketing the external anal sphincter. Two models were tested: a first model that defines severe pelvic floor trauma as either obstetric anal sphincter injury or levator avulsion, and a second, more conservative model, that also included microtrauma.

    RESULTS: A total of 504/660 women (76%) returned for postpartum follow-up as described previously. In all, 21 patients were excluded due to inadequate data or intercurrent pregnancy, leaving 483 women for analysis. Model 1 defined nontraumatic vaginal delivery as excluding operative delivery, obstetric anal sphincter injuries, and sonographic evidence of levator avulsion or residual sphincter defect. Model 2 also excluded microtrauma. Of 483 women, 112 (23%) had a cesarean delivery, 103 (21%) had an operative vaginal delivery, and 17 (4%) had a third-/fourth-degree tear, leaving 251 women who could be said to have had a normal vaginal delivery. On ultrasound, in model 1, 27 women (6%) had an avulsion and 31 (6%) had a residual defect, leaving 193/483 (40%) who met the criteria for atraumatic normal vaginal delivery. In model 2, an additional 33 women (7%) had microtrauma, leaving only 160/483 (33%) women who met the criteria for atraumatic normal vaginal delivery. On multivariate analysis, younger age and earlier gestation at time of delivery remained highly significant as predictors of atraumatic normal vaginal delivery in both models, with increased hiatal area on Valsalva also significant in model 2 (all P ≤ .035).

    CONCLUSION: The prevalence of significant pelvic floor trauma after vaginal child birth is much higher than generally assumed. Rates of obstetric anal sphincter injury are often underestimated and levator avulsion is not included as a consequence of vaginal birth in most obstetric text books. In this study less than half (33-40%) of primiparous women achieved an atraumatic normal vaginal delivery.

  12. Kamisan Atan I, Zhang W, Shek KL, Dietz HP
    PMID: 33561585 DOI: 10.1016/j.ejogrb.2021.01.047
    OBJECTIVE: Vaginal childbirth is an established main aetiological factor in the pathogenesis of female pelvic floor dysfunction. However, pregnancy itself is also likely to have an effect. This study investigated the effect of pregnancy on pelvic floor functional anatomy.

    STUDY DESIGN: This was a retrospective observational study involving vaginally nulliparous women who presented to a tertiary urogynaecology unit with symptoms and signs of pelvic floor dysfunction between 2006 and 2014. Nulliparous women were compared with those who delivered exclusively by Caesarean Section (CS). All had undergone a standardised clinical interview, ICS POP-Q assessment and 3D/4D translabial pelvic floor ultrasound. Main outcome measures included sonographically determined pelvic organ position and hiatal dimensions on Valsalva and pelvic floor muscle contraction (PFMC).

    RESULTS: Of 2930 women seen during the study period, 242 had never given birth vaginally. One hundred and twenty-nine (53 %) were nulliparous, and 113 (47 %) were delivered by CS only. The CS group demonstrated significantly higher pelvic organ mobility in the anterior compartment (all P < 0.05) and a larger hiatal area on Valsalva (P = 0.004). All sonographic measures of pelvic floor muscle function demonstrated greater tissue displacement on PFMC in the CS group (all P < 0.05).

    CONCLUSIONS: Compared to nulliparas, women who delivered exclusively by CS showed increased pelvic organ descent on Valsalva and tissue displacement on PFMC, implying increased tissue elasticity/ compliance or reduced stiffness, consistent with a small permanent hormonal and/or mechanical effect of pregnancy.

  13. Caudwell-Hall J, Kamisan Atan I, Brown C, Guzman Rojas R, Langer S, Shek KL, et al.
    Acta Obstet Gynecol Scand, 2018 Jun;97(6):751-757.
    PMID: 29393505 DOI: 10.1111/aogs.13315
    INTRODUCTION: Levator trauma is a risk factor for the development of pelvic organ prolapse. We aimed to identify antenatal predictors for significant damage to the levator ani muscle during a first vaginal delivery.

    MATERIAL AND METHODS: A retrospective observational study utilizing data from two studies with identical inclusion criteria and assessment protocols between 2005 and 2014. A total of 1148 primiparae with an uncomplicated singleton pregnancy were recruited and assessed with translabial ultrasound at 36 weeks antepartum and 871 (76%) returned for reassessment 3-6 months postpartum. The ultrasound data of vaginally parous women were analyzed for levator avulsion and microtrauma. The former was diagnosed if the muscle insertion at the inferior pubic ramus in the plane of minimal hiatal dimensions and within 5 mm above were abnormal on tomographic ultrasound imaging. Microtrauma was diagnosed in women with an intact levator and if there was a postpartum increase in hiatal area on Valsalva by >20% with the resultant area ≥25 cm2 .

    RESULTS: The complete datasets of 844 women were analyzed. Among them, 609 delivered vaginally: by normal vaginal delivery in 452 (54%), a vacuum birth in 102 (12%) and a forceps delivery in 55 (6%). Levator avulsion was diagnosed in 98 and microtrauma in 97. On multivariate analysis, increasing maternal age, lower body mass index and lower bladder neck descent were associated with avulsion. Increased bladder neck descent and a family history of cesarean section (CS) were associcated with microtrauma.

    CONCLUSIONS: Maternal age, body mass index, bladder neck descent and family history of CS are antenatal predictors for levator trauma.

  14. Trutnovsky G, Kamisan Atan I, Ulrich D, Martin A, Dietz HP
    Acta Obstet Gynecol Scand, 2016 Dec;95(12):1411-1417.
    PMID: 27622984 DOI: 10.1111/aogs.13018
    INTRODUCTION: The study aimed to analyze the relation between the degree of puborectalis muscle trauma and subjective symptoms and objective findings of pelvic organ prolapse (POP), comparing two continuous scoring systems with a discrete scoring system for translabial ultrasound imaging.

    MATERIAL AND METHODS: In this retrospective observational study the records of patients attending a tertiary urogynecological unit between January 2012 and December 2014 were analyzed. POP assessment included a standardized interview, clinical examination using Pelvic Organ Prolapse Quantification and four-dimensional translabial ultrasound. Puborectalis muscle trauma was assessed with tomographic ultrasound imaging using two continuous scoring systems and a previously established discrete system. Receiver operating characteristics and adjusted odds ratios were used for comparison of scoring systems in predicting symptoms and signs of POP.

    RESULTS: Of 1258 women analyzed, 52.6% complained of prolapse symptoms. On ultrasound imaging, 65.7% of women had sonographically significant POP. Complete avulsion was diagnosed in 25.3% of women, being unilateral in 13.9% and bilateral in 11.4%. A maximum score in the 6-point and the 12-point tomographic ultrasound imaging scale increased the odds for a diagnosis of any significant POP on ultrasound by 4.4 and 4.8 times, respectively, compared with 4.6 times for the discrete diagnosis of bilateral avulsion. For all avulsion scoring systems the relation was strongest for cystocele and uterine prolapse.

    CONCLUSIONS: A continuous avulsion scoring system based on tomographic findings does not provide superior performance for the prediction of subjective symptoms and objective findings of prolapse compared with a discrete diagnostic system of unilateral or bilateral avulsion.

  15. Kamisan Atan I, Shek KL, Furtado GI, Caudwell-Hall J, Dietz HP
    Female Pelvic Med Reconstr Surg, 2016 Nov-Dec;22(6):442-446.
    PMID: 27465815
    OBJECTIVES: Levator avulsion is associated with pelvic organ prolapse in women. It is diagnosed clinically by a widened gap on palpation between the insertion of the puborectalis muscle on the inferior pubic ramus and the urethra. This gap can also be assessed on imaging. This study aimed to determine the association between sonographically determined levator-urethral gap (LUG) measurements and symptoms and signs of prolapse.

    METHODS: This is a retrospective study on 450 women seen in a tertiary urogynecological center for symptoms of pelvic floor dysfunction between January 2013 and February 2014. All had a standardized interview, International Continence Society Pelvic Organ Prolapse Quantification assessment and 4-dimensional translabial ultrasound. Post-imaging analysis of archived ultrasound volumes for LUG measurement was undertaken on tomographic slices at the plane of minimal hiatal dimensions and within 5-mm cranial to this plane, bilaterally at an interslice interval of 2.5 mm, blinded against all clinical data. A LUG of 25 mm or greater was considered abnormal.

    RESULTS: Mean LUG and maximum LUG in individuals were 22.5 mm (SD, 4.6) and 26.4 mm (SD, 6.0), respectively, with at least 1 abnormal LUG in 51% (n = 222). An abnormal LUG in all 3 slices involving the plane of minimal hiatal dimensions and within 5 mm cranial to this plane on at least 1 side was fulfilled in 24% (n = 103). The LUG measurements were strongly associated with bother, symptoms and signs of prolapse (P < 0.001 to 0.002). This remained significant on multivariate analysis controlling for potential confounding factors.

    CONCLUSIONS: Sonographically determined LUG is strongly associated with symptoms, symptom bother, and pelvic organ prolapse on clinical examination and imaging.
  16. Shek KL, Atan IK, Dietz HP
    Female Pelvic Med Reconstr Surg, 2016 Nov-Dec;22(6):472-475.
    PMID: 27682743
    OBJECTIVES: The aim of this study was to correlate clinical findings of anal sphincter defects and function with a sonographic diagnosis of significant sphincter defects.

    METHODS: This is an observational cross-sectional study on women seen 6 to 10 weeks after primary repair of obstetric anal sphincter injuries (OASIs). All patients underwent a standardized interview including the St Mark incontinence score, a digital rectal examination, and 3-/4-dimensional transperineal ultrasound imaging.

    RESULTS: Two hundred forty-five patients were seen after primary repair of OASIs. Mean age was 29 (17-43) years. They were assessed at a median of 58 (15-278) days postpartum. One hundred fifty-seven (64%) delivered normal vaginally, 72 (29%) delivered by vacuum, and 16 (7%) delivered by forceps. A comparison of external anal sphincter (EAS) and internal anal sphincter ultrasound volume data and palpation was possible in 220 and 212 cases, respectively. Sphincter defects at rest and on contraction were both detected clinically in 17 patients. Significant abnormalities of the EAS were diagnosed on tomographic ultrasound imaging in 99 cases (45%), and significant abnormalities of the internal anal sphincter were diagnosed in 113 cases (53%). Agreement between digital and sonographic findings of sphincter defect was poor (k = 0.03-0.08). Women with significant EAS defects on ultrasound were found to have a lower resistance to digital insertion (P = 0.018) and maximum anal squeeze (P = 0.009) on a 6-point scale. The difference was however small.

    CONCLUSIONS: Digital rectal examination does not seem to be sufficiently sensitive to diagnose residual sphincter defects after primary repair of OASIs. Imaging is required for the evaluation of sphincter anatomy after repair.
  17. Paka C, Kamisan Atan I, Rios R, Dietz HP
    Female Pelvic Med Reconstr Surg, 2016 10 27;23(4):238-243.
    PMID: 27782978 DOI: 10.1097/SPV.0000000000000350
    OBJECTIVE: The aim of this study was to investigate the association of the anatomic integrity of the external anal sphincter (EAS) detected on transperineal ultrasound (TPUS) with symptoms of anal incontinence (AI) as measured by St Mark's Incontinence Score (SMIS) and the visual analog scale (VAS).

    METHODS: This is an observational, cross-sectional analysis of 486 women who presented to a tertiary urogynecological center between May 2013 and August 2014. They underwent a standardized interview and an examination that involved 3-dimensional/4-dimensional TPUS. The SMIS and VAS were administered if they answered positively to a question on AI. The association between defects of the EAS and symptoms of AI was evaluated using bivariate tests, as well as adjusting for pertinent covariates using multiple linear regression modeling.

    RESULTS: Of the included patients, 17.1% reported AI, and 15.2% had significant EAS defects (≥4 slices) on TPUS imaging. A significant sonographic defect was diagnosed in 23% of women with AI versus 14% of those without (P = 0.033). Women with symptoms of AI were more likely to have a significant defect on TPUS (odds ratio, 1.878; 95% confidence interval, 1.05-3.37). No significant findings were seen when analyzing SMIS, its components, and VAS against sonographic EAS defects.

    CONCLUSIONS: The symptom of AI is associated with significant EAS defects detected on TPUS. However, this study failed to show an association between significant EAS defects and the SMIS and VAS.

  18. Rachaneni S, Atan IK, Shek KL, Dietz HP
    Int Urogynecol J, 2017 Sep;28(9):1401-1405.
    PMID: 28213798 DOI: 10.1007/s00192-017-3285-8
    INTRODUCTION AND HYPOTHESIS: The objective was to evaluate the diagnostic potential of digital rectal examination in the identification of a true rectocele.

    METHODS: This is a retrospective observational study utilising 187 archived data sets of women presenting with lower urinary tract symptoms and/or pelvic organ prolapse between August 2012 and November 2013. Evaluation included a standardised interview, ICS-POPQ, rectal examination and 4D translabial ultrasound. The main outcome measure was the diagnosis of rectocele by digital rectal palpation on Valsalva manoeuvre. This diagnosis correlated with the sonographic diagnosis of rectocele to determine agreement between digital examination and ultrasound findings.

    RESULTS: Complete data sets were available for 180 participants. On imaging, the mean position of the rectal ampulla was 11.07 (-36.3 to 44.3) mm below the symphysis pubis; 42.8% (77) had a rectocele of a depth of ≥10 mm. On palpation, a rectocele was detected in 60 women (33%). Agreement between palpation and imaging was observed in 77%; the kappa was 0.52 (CI 0.39-0.65). On receiver operator characteristic analysis, the area under the curve was 0.854 for the relationship between rectocele pocket depth and the detection of rectocele on palpation.

    CONCLUSION: Moderate agreement was found between digital rectal examination for rectocele and translabial ultrasound findings of a "true rectocele". Digital rectal examination may be used to identify these defects in clinical practice. Extending the clinical examination of prolapse to include rectal examination to palpate defects in the rectovaginal septum may reduce the need for defecatory proctograms for the assessment of obstructive defecation and may help triage patients in the management of posterior compartment prolapse.

  19. Ow LL, Subramaniam N, Kamisan Atan I, Friedman T, Martin A, Dietz HP
    Female Pelvic Med Reconstr Surg, 2018 7 7;25(6):415-418.
    PMID: 29979358 DOI: 10.1097/SPV.0000000000000608
    OBJECTIVE: Genital hiatus (Gh) and perineal body (Pb) are part of the Pelvic Organ Prolapse Quantification assessment system, but it is unclear whether measurements should be taken at rest or on Valsalva. This study was designed to assess the predictive value of Gh and Pb measurements obtained at rest and on Valsalva for signs and symptoms of pelvic organ prolapse (POP).

    METHODS: This is a retrospective study involving 416 women who presented to a tertiary urogynecology unit with symptoms of pelvic floor dysfunction. Genital hiatus and Pb were measured at rest and on maximal Valsalva. The strength of association between binary markers of POP and measurements of Gh/Pb was estimated using logistic regression analysis. Receiver operator characteristic statistics were used to compare predictive values of Gh and Pb measurements obtained at rest and on Valsalva.

    RESULTS: A total of 451 women were seen during the study period. Thirty-five were excluded owing to missing data, leaving 416. Fifty-four percent (n = 223) complained of POP symptoms. On examination, 80% (n = 332) had significant POP (stage 2+ in anterior or posterior compartments or stage 1+ in the central compartment). On imaging, significant POP was diagnosed in 66% (n = 275). Mean hiatal area was 22 cm (SD, 7; range, 5-49 cm) at rest and 30 cm (SD, 10; range, 11-69 cm) on Valsalva. Genital hiatus and Pb measured on Valsalva were consistently stronger predictors of prolapse symptoms and objective prolapse (by clinician examination and by ultrasound) than at Gh and Pb measured at rest. The corresponding area under the curve values were significantly larger for Gh/Pb measures on Valsalva after adjusting for multiple confounders.

    CONCLUSIONS: Genital hiatus/Pb measured on maximal Valsalva is a superior predictor of symptoms and signs of POP compared with Gh/Pb at rest.

  20. Braverman M, Kamisan Atan I, Turel F, Friedman T, Dietz HP
    J Ultrasound Med, 2019 Jan;38(1):233-238.
    PMID: 30027564 DOI: 10.1002/jum.14688
    OBJECTIVES: Translabial ultrasound (US) imaging is an emerging method for the evaluation of pelvic organ prolapse (POP). Normative data to date are limited to imaging in the supine position. The purpose of this study was to evaluate the effect of posture changes on US pelvic organ mobility.

    METHODS: This work was a retrospective study of 175 women seen in a tertiary urogynecologic center for symptoms of lower urinary tract and pelvic floor dysfunction. All underwent a standardized interview, POP quantification prolapse assessment, and 4-dimensional translabial US examination in supine and standing positions. Offline measurement of organ descent on the Valsalva maneuver was undertaken at a later date and was blinded against all other data.

    RESULTS: The mean age was 58 (SD, 13.5; range, 17 to 89) years, with a mean body mass index of 29 (SD, 6.1; range, 18 to 53) kg/m2 . In total, 58.9% (n = 103) presented with symptoms of prolapse. Clinically, 82.8% (n = 145) had substantial prolapse on the POP quantification assessment. On imaging, bladder, uterine, and rectal ampulla positions were significantly lower, and the hiatal area on the Valsalva maneuver was larger in the standing position (P 

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