Associate Professor Ka Lai Shek

Journal Articles

• Housmans, S., Gillor, M., Shek, C. and Dietz, H. (2023), 'Assessment of perineal scars on translabial pelvic floor ultrasound : a pilot study', Journal of Ultrasound in Medicine, vol 42, no 4 , pp 881 - 888.
• Dietz, H., Low, G. and Shek, C. (2023), 'Obstetric risk factors for anal sphincter trauma in a urogynecological population', International Urogynecology Journal, vol 34, no 2 , pp 425 - 430.
• Tecson-Lim, M., Pacquee, S., Gillor, M., Shek, C. and Dietz, H. (2022), 'Is age at menarche a predictor of maternal birth trauma?', Ultrasound in Obstetrics and Gynecology, vol 59, no 5 , pp 677 - 681.
• Dietz, H., Shek, C. and Low, G. (2022), 'Validation of new ultrasound algorithm for estimating prevalence of anal sphincter trauma in a urogynecological population', Ultrasound in Obstetrics and Gynecology, vol 60, no 6 , pp 800 - 804.
• Ling, C., Shek, C., Gillor, M., Caudwell-Hall, J. and Dietz, H. (2021), 'Is location of urethral kinking a confounder of association between urethral closure pressure and stress urinary incontinence?', Ultrasound in Obstetrics and Gynecology, vol 57, no 3 , pp 488 - 492.
• Kamisan Atan, I., Zhang, W., Shek, C. and Dietz, H. (2021), 'Does pregnancy affect pelvic floor functional anatomy? : a retrospective study', European Journal of Obstetrics and Gynecology and Reproductive Biology, vol 259 , pp 26 - 31.
• Yu, H., Shek, C., Gillor, M., Descallar, J. and Dietz, H. (2021), 'Is the visual analogue scale inferior to the pelvic organ prolapse distress inventory for assessing symptom bother of pelvic organ prolapse?', Australian and New Zealand Journal of Obstetrics and Gynaecology, vol 61, no 6 , pp 918 - 921.
• Shek , C. and Dietz , H. (2021), 'Ultrasound imaging of slings and meshes in urogynecology', Ultrasound in Obstetrics and Gynecology, vol 57 , pp 526 - 538.
• Collins, S., O'Shea, M., Dykes, N., Ramm, O., Edenfield, A., Shek, C., Van Delft, K., Beestrum, M. and Kenton, K. (2021), 'International Urogynecological Consultation : clinical definition of pelvic organ prolapse', International Urogynecology Journal, vol 32, no 8 , pp 2011 - 2019.
• Arcanjo Lino, S., Shek, C., Caudwell-Hall, J., Gillor , M. and Dietz, H. (2021), 'Has the prevalence of levator avulsion after forceps delivery changed over the last six decades? : a retrospective study in a urogynaecological population', European Journal Obstetrics and Gynecology and Reproductive Biology, vol 264 , pp 184 - 188.
• Subramaniam, N., Shek, C. and Dietz, H. (2021), 'Imaging characteristics of episiotomy scars on translabial ultrasound : an observational study', Journal of Ultrasound in Medicine, .
• Li, Y., Shek, C., Subramaniam, N., Friedman, T. and Dietz, H. (2020), 'Parity and anal sphincter trauma', International Urogynecology Journal, vol 31, no 3 , pp 553 - 556.
• Gillor, M., Shek, C. and Dietz, H. (2020), 'How comparable is the clinical grading of obstetric anal sphincter injury with that determined by four-dimensional translabial ultrasound?', Ultrasound in Obstetrics and Gynecology, vol 56, no 4 , pp 618 - 623.
• Melon, J., Gillor, M., Neels, H., Shek, C. and Dietz, H. (2020), 'Persistent levator co-activation is not associated with symptoms or bother of obstructed defecation', International Urogynecology Journal, vol 31, no 12 , pp 2611 - 2615.
• Neels, H., Pacquee, S., Shek, C., Gillor, M., Caudwell-Hall, J. and Dietz, H. (2020), 'Is vaginal flatus related to pelvic floor functional anatomy?', International Urogynecology Journal, vol 31 , pp 2551 - 2555.
• Caudwell-Hall, J., Shek, C., Langer, S. and Dietz, H. (2020), 'The effect of replacing vacuum with forceps in operative vaginal delivery : an observational study', International Urogynecology Journal, vol 31, no 9 , pp 1771 - 1776.
• Ely, S., Shek , C. and Dietz, H. (2020), ''Normal birth' : time to change our tune?', Australian and New Zealand Journal of Obstetrics and Gynaecology, vol 60, no 5 , pp 810 - 812.
• Turel, F., Shek, C. and Dietz, H. (2019), 'How valid is tomographic ultrasound imaging in diagnosing levator and anal sphincter trauma?', Journal of Ultrasound in Medicine, vol 38, no 4 , pp 889 - 894.
• Turel, F., Langer, S., Shek, C. and Dietz, H. (2019), 'Medium- to long-term follow-up of obstetric anal sphincter injury', Diseases of the Colon & Rectum, vol 62, no 3 , pp 348 - 356.
• Trutnovsky, G., Robledo, K., Shek, C. and Dietz, H. (2019), 'Definition of apical descent in women with and without previous hysterectomy : a retrospective analysis', PLoS One, vol 14, no 3 .
• Shek, C. and Dietz, H. (2019), 'Vaginal birth and pelvic floor trauma', Current Obstetrics and Gynecology Reports, vol 8, no 2 , pp 15 - 25.
• Wen, L., Shek, C. and Dietz, H. (2019), 'Changes in urethral mobility and configuration after prolapse repair', Ultrasound in Obstetrics and Gynecology, vol 53, no 1 , pp 124 - 128.
• Girgis, M., Shek, C. and Dietz, H. (2019), 'Total vaginal length : does it matter for assessing uterine prolapse?', International Urogynecology Journal, vol 30, no 8 , pp 1279 - 1282.
• Kamisan Atan, I., Shek, C., Langer, S., Caudwell-Hall, J. and Dietz, H. (2019), 'The impact of variations in obstetric practice on maternal birth trauma', International Urogynecology Journal, vol 30, no 6 , pp 917 - 923.
• Cheung, R., Chan, S., Shek, C., Chung, T. and Dietz, H. (2019), 'Pelvic organ prolapse in Caucasian and East Asian women : a comparative study', Ultrasound in Obstetrics and Gynecology, vol 53, no 4 , pp 541 - 545.
• Wong, V., Shek, C., Korda, A., Benness, C., Pardey, J. and Dietz, H. (2019), 'A pilot study on surgical reduction of the levator hiatus : the puborectalis sling', International Urogynecology Journal, vol 30 , pp 2127 - 2133.
• Wen, L., Shek, C., Subramaniam, N., Friedman, T. and Dietz, H. (2018), 'Correlations between sonographic and urodynamic findings after mid-urethral sling surgery', Journal of Urology, vol 199, no 6 , pp 1572 - 1577.
• Dietz, H., Scoti, F., Subramaniam, N., Friedman, T. and Shek, C. (2018), 'Impact of subsequent pregnancies on pelvic floor functional anatomy', International Urogynecology Journal, vol 29, no 10 , pp 1517 - 1522.
• Caudwell-Hall, J., Kamisan Atan, I., Brown, C., Guzman-Rojas, R., Langer, S., Shek, C. and Dietz, H. (2018), 'Can pelvic floor trauma be predicted antenatally?', Acta Obstetricia et Gynecologica Scandinavica, vol 97, no 6 , pp 751 - 757.
• Caudwell-Hall, J., Kamisan Atan, I., Guzman-Rojas, R., Langer, S., Shek, C. and Dietz, H. (2018), 'Atraumatic normal vaginal delivery : how many women get what they want?', American Journal of Obstetrics and Gynecology, vol 219, no 4 , pp 3791 - 3798.
• Rodriguez-Mias, N., Subramaniam, N., Friedman, T., Shek, C. and Dietz, H. (2018), 'Prolapse assessment supine and standing : do we need different cutoffs for "significant prolapse"?', International Urogynecology Journal, vol 29, no 5 , pp 685 - 689.
• Wong, V., Guzman-Rojas, R., Shek, C., Chou, D., Moore, K. and Dietz, H. (2017), 'Laparoscopic sacrocolpopexy : how low does the mesh go?', Ultrasound in Obstetrics and Gynecology, vol 49, no 3 , pp 404 - 408.
• Garnham, A., Guzman-Rojas, R., Shek, C. and Dietz, H. (2017), 'Predicting levator avulsion from ICS POP-Q findings', International Urogynecology Journal, vol 28, no 6 , pp 907 - 911.
• Rachanen, S., Kamisan Atan, I., Shek, C. and Dietz, H. (2017), 'Digital rectal examination in the evaluation of rectovaginal septal defects', International Urogynecology Journal, vol 28, no 9 , pp 1401 - 1405.
• Wong, V. and Shek, C. (2017), 'The mesh debate : transvaginal anterior anchored mesh should not be abandoned', Australian and New Zealand Journal of Obstetrics and Gynaecology, vol 57, no 1 , pp 105 - 107.
• Ferreira, C., Kamisan Atan, I., Martin, A., Shek, C. and Dietz, H. (2017), 'Pelvic organ support several years after a first birth', International Urogynecology Journal, vol 28, no 10 , pp 1499 - 1505.
• Caudwell-Hall, J., Kamisan Atan, I., Martin, A., Guzman Rojas, R., Langer, S., Shek, C. and Dietz, H. (2017), 'Intrapartum predictors of maternal levator ani injury', Acta Obstetricia et Gynecologica Scandinavica, vol 96, no 4 , pp 426 - 431.
• Shek, C. and Dietz, H. (2017), 'Comment on Chaudhry et al. : descending perineum syndrome : a review of the presentation, diagnosis, and management', International Urogynecology Journal, vol 28, no 1 , pp 165 - 166.
• Shek, C., Green, K., Hall, J., Guzman-Rojas, R. and Dietz, H. (2016), 'Perineal and vaginal tears are clinical markers for occult levator ani trauma : a retrospective observational study', Ultrasound in Obstetrics and Gynecology, vol 47, no 2 , pp 224 - 227.
• Shek, C. and Dietz, H. (2016), 'Assessment of pelvic organ prolapse : a review', Ultrasound in Obstetrics and Gynecology, vol 48, no 6 , pp 681 - 692.
• Kamisan Atan, I., Shek, C., Langer, S., Guzman Rojas, R., Caudwell-Hall, J., Daly, J. and Dietz, H. (2016), 'Does the Epi-No? birth trainer prevent vaginal birth-related pelvic floor trauma? : a multicentre prospective randomised controlled trial', BJOG: An International Journal of Obstetrics and Gynaecology, vol 123, no 6 , pp 995 - 1003.
• Oversand, S., Kamisan Atan, I., Shek, C. and Dietz, H. (2016), 'Association of urinary and anal incontinence with measures of pelvic floor muscle contractility', Ultrasound in Obstetrics and Gynecology, vol 47, no 5 , pp 642 - 645.
• Guzman-Rojas, R., Kamisan Atan, I., Shek, C. and Dietz, H. (2016), 'The prevalence of abnormal posterior compartment anatomy and its association with obstructed defecation symptoms in urogynecological patients', International Urogynecology Journal, vol 27, no 6 , pp 939 - 944.
• Naranjo-Ortiz, C., Shek, C., Martin, A. and Dietz, H. (2016), 'What is normal bladder neck anatomy?', International Urogynecology Journal, , pp 1 - 6.
• Shek, C., Krause, H., Wong, V., Goh, J. and Dietz, H. (2016), 'Is pelvic organ support different between young nulliparous Africans and Caucasian women?', Ultrasound in Obstetrics and Gynecology, vol 47, no 6 , pp 774 - 778.
• Dietz, H., Severino, M., Kamisan Atan, I., Shek, C. and Guzman Rojas, R. (2016), 'Warping of the levator hiatus : how significant is it?', Ultrasound in Obstetrics and Gynecology, vol 48, no 2 , pp 239 - 242.
• Kamisan Atan, I., Shek, C., Furtado, G., Caudwell-Hall, J. and Dietz, H. (2016), 'The association between levator-urethra gap measurements and symptoms and signs of female pelvic organ prolapse', Female Pelvic Medicine and Reconstructive Surgery, vol 22, no 6 , pp 442 - 446.
• Shek, C., Atan, I. and Dietz, H. (2016), 'Can anal sphincter defects be identified by palpation?', Female Pelvic Medicine and Reconstructive Surgery, vol 22, no 6 , pp 472 - 475.
• Shek, C., Zazzera, V., Kamisan Atan, I., Guzman-Rojas, R., Langer, S. and Dietz, H. (2016), 'The evolution of transperineal ultrasound findings of the external anal sphincter during the first years after childbirth', International Urogynecology Journal, vol 27, no 12 , pp 1899 - 1903.
• Guzman-Rojas, R., Kamisan Atan, I., Shek, C. and Dietz, H. (2015), 'Anal sphincter trauma and anal incontinence in urogynecological patients', Ultrasound in Obstetrics and Gynecology, vol 46, no 3 , pp 363 - 366.
• Dietz, H., Zhang, X., Shek, C. and Guzman-Rojas, R. (2015), 'How large does a rectocele have to be to cause symptoms? : a 3D/4D ultrasound study', International Urogynecology Journal, vol 26, no 9 , pp 1355 - 1359.
• Guzman-Rojas, R., Kamisan Atan, I., Shek, C. and Dietz, H. (2015), 'Defect-specific rectocele repair : medium-term anatomical, functional and subjective outcomes', Australian and New Zealand Journal of Obstetrics and Gynaecology, vol 55, no 5 , pp 487 - 492.
• Tan, L., Shek, C., Kamisan Atan, I., Guzman-Rojas, R. and Dietz, H. (2015), 'The repeatability of sonographic measures of functional pelvic floor anatomy', International Urogynecology Journal, vol 26, no 11 , pp 1667 - 1672.
• Shek, C. and Dietz, H. (2015), 'What is abnormal uterine descent on translabial ultrasound?', International Urogynecology Journal, vol 26, no 12 , pp 1783 - 1787.
• Oversand, S., Kamisan Atan, I., Shek, C. and Dietz, H. (2015), 'The association between different measures of pelvic floor muscle function and female pelvic organ prolapse', International Urogynecology Journal, vol 26, no 12 , pp 1777 - 1781.
• Thomas, V., Shek, K., Guzman-Rojas, R. and Dietz, H. (2015), 'Temporal latency between pelvic floor trauma and presentation for prolapse surgery : a retrospective observational study', International Urogynecology Journal, vol 26, no 8 , pp 1185 - 1189.
• Cheung, R., Shek, K., Chan, S., Chung, T. and Dietz, H. (2015), 'Pelvic floor muscle biometry and pelvic organ mobility in East Asian and Caucasian nulliparae', Ultrasound in Obstetrics and Gynecology, vol 45, no 5 , pp 599 - 604.
• Cassado-Garriga, J., Wong, V., Shek, C. and Dietz, H. (2015), 'Can we identify changes in fascial paravaginal supports after childbirth?', The Australian and New Zealand Journal of Obstetrics and Gynaecology, vol 55, no 1 , pp 70 - 75.
• Wlazlak, E., Surkont, G., Shek, C. and Dietz, H. (2015), 'Can we predict urinary stress incontinence by using demographic, clinical, imaging and urodynamic data?', European Journal of Obstetrics and Gynecology and Reproductive Biology, vol 193 , pp 114 - 117.
• Guzman Rojas, R., Quintero, C., Shek, C. and Dietz, H. (2015), 'Does childbirth play a role in the etiology of rectocele?', International Urogynecology Journal, vol 26, no 5 , pp 737 - 741.
• Wong, V., Shek, C., Rane, A., Lee, J., Rosamilia, A. and Dietz, H. (2014), 'A comparison of two different mesh kit systems for anterior compartment prolapse repair', Australian and New Zealand Journal of Obstetrics and Gynaecology, vol 54, no 3 , pp 212 - 217.
• Horak, T., Guzman-Rojas, R., Shek, C. and Dietz, H. (2014), 'Pelvic floor trauma : does the second baby matter?', Ultrasound in Obstetrics and Gynecology, vol 44, no 1 , pp 90 - 94.
• Dietz, H., Guzman-Rojas, R. and Shek, C. (2014), 'Postprocessing of pelvic floor ultrasound data : how repeatable is it?', Australian and New Zealand Journal of Obstetrics and Gynaecology, vol 54, no 6 , pp 553 - 557.
• Shek, C. and Dietz, H. (2014), 'Imaging of slings and meshes', Australian Journal of Ultrasound in Medicine, vol 17, no 2 , pp 61 - 71.