Nancy Van Laeken
University of British Columbia
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Featured researches published by Nancy Van Laeken.
Plastic and reconstructive surgery. Global open | 2016
Anne F. Klassen; Stefan J. Cano; Amy K. Alderman; Mark Soldin; Achilles Thoma; Sam Robson; Manraj Nirmal Kaur; Athanasios Papas; Nancy Van Laeken; Valerie H. Taylor; Andrea L. Pusic
Background: Body contouring performed for cosmetic purposes, or after weight loss, has the potential to improve body image and health-related quality of life (HRQL). The BODY-Q is a new patient-reported outcome (PRO) instrument designed to measure patient perceptions of weight loss and/or body contouring. In this article, we describe the psychometric properties of the BODY-Q scales after an international field-test. Methods: Weight loss and body contouring patients from Canada, United States, and United Kingdom were recruited between November 2013 and February 2015. Data were collected using an iPad directly into a web-based application or a questionnaire booklet. Rasch measurement theory analysis was used for item reduction and to examine reliability, validity, and ability to detect change. Results: The sample included 403 weight loss and 331 body contouring patients. Most BODY-Q items had ordered thresholds (134/138) and good item fit. Scale reliability was acceptable, ie, Person separation index >0.70 for 16 scales, Cronbach &agr; ≥0.90 for 18 of 18 scales, and Test–retest ≥0.87 for 17 of 18 scales. Appearance and HRQL scores were lower in participants with more obesity-related symptoms, higher body mass index, and more excess skin and in those pre- versus postoperative body contouring. The 134 weight loss patients who completed the BODY-Q twice, either 6 weeks (weight loss/nonsurgical body contouring program) or 6 months (bariatric program) later, improved significantly on 7 appearance and 4 HRQL scales. Conclusion: The BODY-Q is a clinically meaningful and scientifically sound patient-reported outcome instrument that can be used to measure outcomes in patients who undergo weight loss and/or body contouring.
Annals of Plastic Surgery | 2010
Farrah M. Yau; Sheina A. Macadam; Urve Kuusk; Michael Nimmo; Nancy Van Laeken
Granulomatous mastitis is an inflammatory breast condition of unknown etiology. Management remains controversial and treatment algorithms are lacking from the literature. Few resources exist that discuss breast reconstruction following extirpation. This descriptive case series reviews the clinicopathologic features of granulomatous mastitis.We describe the surgical management undertaken at our institution including General and Plastic Surgery procedures. Eleven clinical charts and histologic slides of biopsy specimens were reviewed in our health region between 1992 and 2007. Demographic data, clinical presentation, and radiologic findings were tabulated. Treatment consisted of empirical antibiotics and surgical excision. Procedures performed included incision and drainage (n = 8), excisional biopsy (n = 15), partial mastectomy (n = 5), partial mastectomy with reduction mammaplasty (n = 2), and mastectomy with TRAM flap reconstruction (n = 1).Treatment was successful in all but one case. Multiple surgeries for recurrent lesions were often required to achieve final remission. Following extirpation, we recommend delayed breast reconstruction to monitor for recurrence.
Plastic and Reconstructive Surgery | 2016
Aaron D. C. Knox; Adelyn L. Ho; Leslie Leung; A. Yashar Tashakkor; Peter A. Lennox; Nancy Van Laeken; Sheina A. Macadam
BACKGROUND There are few studies that compare the deep inferior epigastric artery perforator (DIEP) flap to the pedicled transverse rectus abdominis myocutaneous (pTRAM) flap for use in reconstructive breast surgery. The authors examined four factors that aid in decision-making: donor-site morbidity, need for surgery related to abdominal morbidity, operative time, and complications. METHODS This is a retrospective review of patients undergoing breast reconstruction using the DIEP or pTRAM flap at the University of British Columbia between 2002 and 2013. The authors compared operative time and abdomen- and flap-related complications in both groups. RESULTS Reconstruction was performed in 507 patients; 25.6 percent received DIEP flaps (n = 183 breasts) and 74.4 percent underwent pTRAM flap surgery (n = 444 breasts). Pedicled TRAM flap patients were more likely to require abdominal closure with mesh (44.2 percent versus 8.1 percent; p < 0.001); 21.2 percent of them had a postoperative bulge and/or hernia versus 3.1 percent of DIEP flap patients; and 12.7 percent of pTRAM flap patients required surgery for hernia/bulge. Controlling for confounders, there were five times the odds of a hernia/bulge in the pTRAM flap group. DIEP flap surgery was 234 minutes longer than pTRAM flap surgery. CONCLUSIONS The benefits of the pTRAM flap may be offset by the need to correct abdominal wall complications. DIEP flap reconstruction had lower donor complications but increased operative time. A cost analysis is needed to determine the most economical procedure. CLINCIAL QUESTION/LEVEL OF EVIDENCE Therapeutic, III.
JAMA Facial Plastic Surgery | 2017
Anne F. Klassen; Stefan J. Cano; James C. Grotting; Stephen B. Baker; Jean Carruthers; Alastair Carruthers; Nancy Van Laeken; Jonathan M. Sykes; Jonathan A. Schwitzer; Andrea L. Pusic
Importance Aesthetic eye treatments can dramatically change a person’s appearance, but outcomes are rarely measured from the patient perspective. The patient perspective could be measured using an eye-specific patient-reported outcome measure. Objective To describe the development and psychometric evaluation of FACE-Q scales and an adverse effect checklist designed to measure outcomes following cosmetic eye treatments. Design, Setting, and Participants Pretreatment and posttreatment patients 18 years and older who had undergone facial aesthetic procedures were recruited from plastic surgery clinics in United States and Canada and completed FACE-Q scales between June 6, 2010, and July 14, 2014. We used Rasch Measurement Theory, a modern psychometric approach, to refine the scales and to examine psychometric properties. Main Outcomes and Measures The FACE-Q Eye Module, which has 4 scales that measure appearance of the eyes, upper and lower eyelids, and eyelashes. Scale scores range from 0 (worst) to 100 (best). The module also includes a checklist measuring postblepharoplasty adverse effects. Results Overall, 233 patients (81% response rate) 18 years and older participated. Adverse effects included being bothered by eyelid scars, dry eyes, and eye irritation. In Rasch Measurement Theory analysis, each scale’s items had ordered thresholds and good item fit. Person Separation Index and Cronbach &agr; were greater than or equal to 0.83. Higher scores on the eye scales correlated with fewer adverse effects (range, −0.26 to −0.36). In the pretreatment group, older age correlated with lower scores (range, −0.42 to −0.51) on the scales measure appearance of the eyes and upper and lower eyelids. Compared with the pretreatment group, posttreatment participants reported significantly better scores on the scales measuring appearance of eyes overall, as well as upper and lower eyelids. Conclusions and Relevance The FACE-Q Eye Module can be used in clinical practice, research and quality improvement to collect evidence-based outcomes data. Level of Evidence NA.
Annals of Plastic Surgery | 2016
Diana Song; Karen Slater; Michael Papsdorf; Nancy Van Laeken; Toni Zhong; Alexes Hazen; Dale Vidal; Sheina A. Macadam
BackgroundAutologous breast reconstruction has been shown to have fewer complications and superior outcomes. In the elderly patient population, a paucity of literature on the subject may render the surgeon reluctant to recommend or perform such a procedure. The objective of this study was to compare complications and satisfaction after abdominally based breast reconstruction in patients older than versus younger than 65 years. MethodsA retrospective study was performed with data from 5 North American centers from 2002 to 2012. Patients who underwent autologous reconstruction were identified retrospectively, and chart review was performed. The BREAST-Q questionnaire was sent to these patients via mail. Patient variables, operative outcomes and BREASTQ results were analyzed. The Pearson &khgr;2 and analysis of variance tests were used. Given the number of analyses, a more conservative &agr; of 0.01 was used for each comparison. ResultsA total of 1809 patients were included with 1751 patients younger than 65 years and 58 patients aged 65 years or older. Analysis of postoperative complications showed no significant differences between the age groups, though there was a trend toward higher seroma development (17.2% vs 8.1%; P = 0.013) and infection (19.0% vs 10.0%; P = 0.028) in the older group with statistical significance set at P less than 0.01 to account for multiple comparisons. A total of 1809 BREAST-Q surveys were sent with a response rate of 52.5%. Patient satisfaction results were equally high between the 2 age groups. ConclusionsThis is the largest study to compare patients undergoing autologous breast reconstruction older than and younger than 65 years within the same cohort. Women older than 65 years represent a minority and constituted only 3% of patients in this multicenter 10-year review. We have shown that with careful patient selection, abdominally based autologous reconstruction should be considered in the elderly patient population because it is well tolerated and achieves high patient satisfaction.
Plastic and Reconstructive Surgery | 2014
Perry Gdalevitch; Adelyn L. Ho; Krista Genoway; Hasmik Alvrtsyan; Esta S. Bovill; Peter A. Lennox; Nancy Van Laeken; Sheina A. Macadam
Background: Direct-to-implant single-stage immediate breast reconstruction using acellular dermal matrix is a cost-effective alternative to two-stage expander-implant reconstruction. The purpose of this study was to identify predictors of direct-to-implant single-stage immediate breast reconstruction failure, defined as need for early (⩽6 months) revision surgery. Methods: The authors conducted a retrospective cohort study of all patients with direct-to-implant single-stage immediate breast reconstruction in 2010 and 2011 at three University of British Columbia hospitals. Data were compared between successful and failed single-stage reconstructions. Predictors of failure were identified using multivariate logistic regression. Patient demographics and complications were compared to a random sample of control patients with two-stage alloplastic reconstruction without acellular dermal matrix. Results: Of 164 breasts that underwent direct-to-implant single-stage immediate breast reconstruction, 52 (31.7 percent) required early revision. Increasing breast cup size was the only significant predictor of early revision compared with bra size A (OR for bra size B, 4.86; C, 4.96; D, 6.01; p < 0.05). Prophylactic mastectomies showed a trend toward successful single stage (OR, 0.47; p = 0.061), whereas smoking history trended toward failure (OR, 1.79; p = 0.065). Mastectomy flap necrosis was significantly higher in direct-to-implant single-stage immediate reconstruction cases compared to two-stage controls. Conclusions: Direct-to-implant breast reconstruction can be reliably performed in a single stage in patients with small breast size. Increasing breast cup size confers a higher chance of early revision. A two-stage approach may be more cost-effective in larger breasted patients. CLINICAL QUESTION/LEVEL OF EVIDENCE: Risk, III.
Plastic and reconstructive surgery. Global open | 2015
Jonathan A. Schwitzer; H. Catherine Miller; Andrea L. Pusic; Evan Matros; Babak J. Mehrara; Colleen M. McCarthy; Peter A. Lennox; Nancy Van Laeken; Joseph J. Disa
Background: The purpose of this study was to compare patient satisfaction following unilateral pedicled transverse rectus abdominis myocutaneous (TRAM) and free abdominal flap reconstruction. Methods: Patients who underwent unilateral breast reconstruction using pedicled TRAM or free abdominal flaps (muscle-sparing TRAM or deep inferior epigastric perforator flap) and completed the BREAST-Q were identified from 2 prospectively maintained databases. BREAST-Q scores were assessed and compared for Satisfaction with Breasts, Outcome, and Physical Well-being Chest/Abdomen. Results: Of the 138 patients who completed the BREAST-Q, 84 underwent pedicled TRAM flap reconstruction and 54 underwent free abdominal flap reconstruction. Overall, pedicled TRAM flap patients scored higher than free abdominal flap patients on all 4 BREAST-Q scales. This difference reached statistical significance in Satisfaction with Breasts (+7.74; P = 0.02). Similar results were found among patients who completed the BREAST-Q at <3 years postoperation. However, among patients at ≥3 years postoperation, there were no statistically significant differences between the 2 groups, with the pedicled flap cohort scoring higher in Satisfaction with Breasts and Physical Well-being Chest and the free abdominal flap cohort scoring higher in Satisfaction with Outcome and Physical Well-being Abdomen scores. Conclusions: Patients who underwent unilateral pedicled TRAM flap reconstruction experienced greater initial breast satisfaction than patients who underwent unilateral free abdominal flap reconstruction, but satisfaction equalized between the two over time, suggesting that long-term satisfaction may be equivalent between the 2 methods of reconstruction.
Cureus | 2017
Elaine McKevitt; Carol Dingee; Sher-Ping Leung; Carl J. Brown; Nancy Van Laeken; Richard Lee; Urve Kuusk
Introduction Diagnostic delays for breast problems is a current concern in British Columbia and diagnostic pathways for breast cancer are currently under review. Breast centres have been introduced in Europe and reported to facilitate diagnosis and treatment. Guidelines for breast centers are outlined by the European Society for Mastology (EUSOMA). A Rapid Access Breast Clinic (RABC) was developed at our hospital applying the concept of triple evaluation for all patients and navigation between clinicians and radiologists. We hypothesize that the Rapid Access Breast Clinic will decrease wait times to diagnosis and minimize duplication of services compared to usual care. Methods A retrospective review was undertaken looking at diagnostic wait times and the number of diagnostic centres involved for consecutive patients seen by breast surgeons with diagnostic workups performed either in the traditional system (TS) or the RABC. Only patients presenting with a new breast problem were included in the study. Results Patients seen at the RABC had a decreased time to surgical consultation (33 vs 86 days, p<0.0001) for both malignant (36 vs 59 days, p=0.0007) and benign diagnoses (31 vs 95 days, p<0.0001). Furthermore, 13% of the patients referred to the surgeon in the TS without a diagnosis were eventually diagnosed with a malignancy and waited a mean of 84 days for initial surgical assessment. Of the patients seen at the RABC, 5% required investigation at more than one institution compared to 39% patients seen in the TS (p<0.0001). Cancer patients had a shorter time from presentation to surgery in the RABC (64 vs 92 days, p=0.009). Conclusion The establishment of the RABC has significantly reduced the time to surgical consultation, time to breast cancer surgery, and duplication of investigations for patients with benign and malignant breast complaints. It is feasible to introduce a EUSOMA-based breast clinic in the Canadian Health Care System and improvements in diagnostic wait times are seen. We recommend the expansion of coordinated care to other sites.
Scientific Reports | 2018
Valerio Russo; Theo Klein; Darielle J. Lim; Nestor Solis; Yoan Machado; Sho Hiroyasu; Layla Nabai; Yue Shen; Matthew R. Zeglinski; Hongyan Zhao; Cameron Oram; Peter A. Lennox; Nancy Van Laeken; Nick J. Carr; Richard I. Crawford; Claus-Werner Franzke; Christopher M. Overall; David J. Granville
In healthy skin, epidermis and dermis are anchored together at the dermal-epidermal junction (DEJ), a specialized basement membrane pivotal for skin integrity and function. However, increased inflammation in the DEJ is associated with the disruption and separation of this junction and sub-epidermal blistering. Granzyme B (GzmB) is a serine protease secreted by immune cells. Dysregulated inflammation may lead to increased GzmB accumulation and proteolysis in the extracellular milieu. Although elevated GzmB is observed at the level of the DEJ in inflammatory and blistering skin conditions, the present study is the first to explore GzmB in the context of DEJ degradation in autoimmune sub-epidermal blistering. In the present study, GzmB induced separation of the DEJ in healthy human skin. Subsequently, α6/β4 integrin, collagen VII, and collagen XVII were identified as extracellular substrates for GzmB through western blot, and specific cleavage sites were identified by mass spectrometry. In human bullous pemphigoid, dermatitis herpetiformis, and epidermolysis bullosa acquisita, GzmB was elevated at the DEJ when compared to healthy samples, while α6/β4 integrin, collagen VII, and collagen XVII were reduced or absent in the area of blistering. In summary, our results suggest that regardless of the initial causation of sub-epidermal blistering, GzmB activity is a common final pathway that could be amenable to a single targeted treatment approach.
Archive | 2018
Krista Genoway; Nancy Van Laeken
Many options exist for the creation of a nipple-areola complex following oncologic resection or trauma. Techniques described utilize local flaps, autologous grafts, and non-autologous material. The formation of an aesthetic nipple-areola complex (NAC) with lasting projection remains a challenge with each method presenting unique advantages and disadvantages. Despite numerous techniques described, no single approach has emerged as the gold standard. This chapter outlines a two-step surgical technique in NAC reconstruction allowing for independent reconstruction of the nipple and areola complex. In our hands, this technique has produced lasting results for over 20 years. It maintains projection while creating a natural contour between the nipple, the areola complex, and the surrounding breast tissue.