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Carty, Matthew

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Carty

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Matthew

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Carty, Matthew
Author's Publications: search.filters.isAuthorOfPublication.f9699eda-0b55-4719-ac40-2226eed87456

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Now showing 1 - 9 of 9
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    Patient Satisfaction and Surgeon Experience: A Follow-Up to the Reduction Mammaplasty Learning Curve Study
    (Open Science Company, LLC, 2012) Carty, Matthew; Duclos, Antoine; Gu, Xiangmei; Elele, Nkemdiche; Orgill, Dennis
    Background: While it is known that increasing surgeon experience is correlated with improved efficiency and safety in the reduction mammaplasty procedure, it is unclear whether these improvements lead to an erosion in patient satisfaction. Methods: The authors distributed the Breast-Q questionnaire to all patients who underwent bilateral reduction mammaplasty at their institution between 1995 and 2007. Univariate and multivariate analyses were performed to assess the relationship between postoperative patient satisfaction scores and surgeon experience, as well as to characterize those patients with particularly high or low satisfaction scores, in general. Results: A total of 279 (26.1%) completed surveys were analyzed. No statistically significant erosion in either Satisfaction with Breasts (SWB) or Satisfaction with Outcomes (SWO) scores were witnessed with increasing surgeon experience or efficiency. Patients older than 40 years demonstrated significantly higher SWB scores than younger patients (P = .004), while patients who suffered postoperative soft tissue necrosis demonstrated significantly lower SWB (P = .003) and SWO (P = .010) scores. Conclusions: Gains in operative efficiency with increasing surgeon experience do not appear to come at the expense of patient satisfaction in the reduction mammaplasty procedure. Younger patients and those who experience postoperative soft tissue necrosis appear to be at higher risk for reporting lower postoperative patient satisfaction scores.
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    Patient- and surgeon-adjusted control charts for monitoring performance
    (BMJ Publishing Group, 2014) Maruthappu, Mahiben; Carty, Matthew; Lipsitz, Stuart; Wright, John; Orgill, Dennis; Duclos, Antoine
    Objectives: To determine whether an innovative graphical tool for accurate measurement of individual surgeon performance metrics, adjusted for both surgeon-specific and patient-specific factors, significantly alters interpretation of performance data. Design: Retrospective analysis of all total knee replacements (TKRs) conducted at the host institution between 1996 and 2009. The database was randomly divided into training and testing datasets. Using multivariate generalised estimating equation regression models, the training dataset enabled generation of patient-risk and surgeon-experience adjustment factors. To simulate prospective monitoring of individual surgeon outcomes, the testing dataset was mapped on control charts. Weighted κ statistics were calculated to measure the agreement between patient-risk adjusted and fully adjusted control charts. Setting: Tertiary care academic hospital. Participants: All patients undergoing TKR at the host institution 1996–2009. Main outcome measure Operative efficiency. Results: 5313 procedures were analysed. Adjusted control charts were generated using a training dataset comprising 3756 procedures performed by 13 surgeons. The operative time gradually declined by 121 min with 25 years of experience (p<0.0001). Charts were tested by monitoring four other surgeons, performing an average of 389 procedures each. Adjustment for surgeon experience significantly altered the interpretation of operative efficiency (κ=0.29 (95% CI 0.11 to 0.47)), and enhanced assessment of a surgeon's improvement or diminishment in efficiency over time. Specifically, experience adjustment inverted the interpretation of surgeon efficiency from above average to below average, or from improving to declining performance. Conclusions: Adjustment for surgeon experience is necessary for accurate interpretation of metrics over the course of a surgeon's career. Patient-adjusted and surgeon-adjusted control charts provide an accurate method of monitoring individual operative efficiency.
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    The impact of feedback of intraoperative technical performance in surgery: a systematic review
    (BMJ Publishing Group, 2015) Trehan, Abhishek; Barnett-Vanes, Ashton; Carty, Matthew; McCulloch, Peter; Maruthappu, Mahiben
    Objectives: Increasing patient demands, costs and emphasis on safety, coupled with reductions in the length of time surgical trainees spend in the operating theatre, necessitate means to improve the efficiency of surgical training. In this respect, feedback based on intraoperative surgical performance may be beneficial. Our aim was to systematically review the impact of intraoperative feedback based on surgical performance. Setting: MEDLINE, Embase, PsycINFO, AMED and the Cochrane Database of Systematic Reviews were searched. Two reviewers independently reviewed citations using predetermined inclusion and exclusion criteria. 32 data-points per study were extracted. Participants: The search strategy yielded 1531 citations. Three studies were eligible, which comprised a total of 280 procedures by 62 surgeons. Results: Overall, feedback based on intraoperative surgical performance was found to be a powerful method for improving performance. In cholecystectomy, feedback led to a reduction in procedure time (p=0.022) and an improvement in economy of movement (p<0.001). In simulated laparoscopic colectomy, feedback led to improvements in instrument path length (p=0.001) and instrument smoothness (p=0.045). Feedback also reduced error scores in cholecystectomy (p=0.003), simulated laparoscopic colectomy (p<0.001) and simulated renal artery angioplasty (p=0.004). In addition, feedback improved balloon placement accuracy (p=0.041), and resulted in a smoother learning curve and earlier plateau in performance in simulated renal artery angioplasty. Conclusions: Intraoperative feedback appears to be associated with an improvement in performance, however, there is a paucity of research in this area. Further work is needed in order to establish the long-term benefits of feedback and the optimum means and circumstances of feedback delivery.
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    Three Patients with Full Facial Transplantation
    (New England Journal of Medicine (NEJM/MMS), 2012) Pomahac, Bohdan; Pribaz, Julian; Eriksson, Elof; Bueno, Ericka M.; Diaz-Siso, J. Rodrigo; Rybicki, Frank John; Annino, Donald James; Orgill, Dennis; Caterson, Edward; Caterson, Stephanie; Carty, Matthew; Chun, Yoon; Sampson, Christian; Janis, Jeffrey E.; Alam, Daniel S.; Saavedra, Arturo; Molnar, Joseph A.; Edrich, Thomas; Marty, Francisco; Tullius, Stefan
    Unlike conventional reconstruction, facial transplantation seeks to correct severe deformities in a single operation. We report on three patients who received full-face transplants at our institution in 2011 in operations that aimed for functional restoration by coaptation of all main available motor and sensory nerves. We enumerate the technical challenges and postoperative complications and their management, including single episodes of acute rejection in two patients. At 6 months of follow-up, all facial allografts were surviving, facial appearance and function were improved, and glucocorticoids were successfully withdrawn in all patients.
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    Surgical Risks Associated with Winter Sport Tourism
    (Public Library of Science, 2015) Sanchez, Stéphane; Payet, Cécile; Lifante, Jean-Christophe; Polazzi, Stéphanie; Chollet, François; Carty, Matthew; Duclos, Antoine
    Background: Mass tourism during winter in mountain areas may cause significant clustering of body injuries leading to increasing emergency admissions at hospital. We aimed at assessing if surgical safety and efficiency was maintained in this particular context. Methods: We selected all emergency admissions of open surgery performed in French hospitals between 2010 and 2012. After identifying mountain areas with increasing volume of surgical stays during winter, we considered seasonal variations in surgical outcomes using a difference-in-differences study design. We computed multilevel regressions to evaluate whether significant increase in emergency cases had an effect on surgical mortality, complications and length of stay. Clustering effect of patients within hospitals was integrated in analysis and surgical outcomes were adjusted for both patient and hospital characteristics. Results: A total of 381 hospitals had 559,052 inpatient stays related to emergency open surgery over 3 years. Compared to other geographical areas, a significant peak of activity was noted during winter in mountainous hospitals (Alps, Pyrenees, Vosges), ranging 6-77% volume increase. Peak was mainly explained by tourists’ influx (+124.5%, 4,351/3,496) and increased need for orthopaedic procedures (+36.8%, 4,731/12,873). After controlling for potential confounders, patients did not experience increased risk for postoperative death (ratio of OR 1.01, 95%CI 0.89-1.14, p = 0.891), thromboembolism (0.95, 0.77-1.17, p = 0.621) or sepsis (0.98, 0.85-1.12, p = 0.748). Length of stay was unaltered (1.00, 0.99-1.02, p = 0.716). Conclusion: Surgical outcomes are not compromised during winter in French mountain areas despite a substantial influx of major emergencies.
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    Increased Mortality for Elective Surgery during Summer Vacation: A Longitudinal Analysis of Nationwide Data
    (Public Library of Science, 2015) Caillet, Pascal; Payet, Cécile; Polazzi, Stéphanie; Carty, Matthew; Lifante, Jean-Christophe; Duclos, Antoine
    Surgical safety during vacation periods may be influenced by the interplay of several factors, including workers' leave, hospital activity, climate, and the variety of patient cases. This study aimed to highlight an annually recurring peak of surgical mortality during summer in France and explore its main predictors. We selected all elective of open surgical procedures performed in French hospitals between 2007 and 2012. Surgical mortality variation was analyzed over time in relation to workers leaving on vacation, the volume of procedures performed by hospitals, and temperature changes. We ran a multilevel logistic regression for exploring the determinants of surgical mortality, taking into account the clustering of patients within hospitals and adjusting for patient and hospital characteristics. A total of 609 French hospitals had 8,926,120 discharges related to open elective surgery. During 6 years, we found a recurring mortality peak of 1.15% (95% CI 1.09–1.20) in August compared with 0.81% (0.79–0.82, p<.001) in other months. The incidence of worker vacation was 43.0% (38.9–47.2) in August compared with 7.3% (4.6–10.1, p<.001) in other months. Hospital activity decreased substantially in August (78,126 inpatient stays, 75,298–80,954) in relation to other months (128,142, 125,697–130,586, p<.001). After adjusting for all covariates, we found an "August effect" reflecting a higher risk to patients undergoing operations at this time (OR 1.16, 95% CI 1.12–1.19, p<.001). The main study limitation was the absence of data linkage between surgical staffing and mortality at the hospital level. The observed, recurring mortality peak in August raises questions about how to maintain hospital activity and optimal staffing through better regulation of human activities.
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    Tissue Expander Overfilling: Achieving New Dimensions of Customization in Breast Reconstruction
    (Wolters Kluwer Health, 2016) Treiser, Matthew D.; Lahair, Tracy; Carty, Matthew
    Introduction: Overfill of tissue expanders is a commonly used modality to achieve customized dimensions in breast reconstruction. Little formal study of the dynamics of hyperexpansion of these devices has been performed to date, however. Methods: Overfill trials were performed using both Natrelle 133 MV and Mentor 8200 tissue expanders of indicated capacities ranging from 250 to 800 mL. Each expander was initially filled to its indicated capacity with normal water and then injected in regular increments to 400% overfill. Measurements of each expander’s width, height, and projection were made at indicated capacity and with each successive incremental overfill injection, and these results were then recorded, collated, and analyzed. Results: Over the first 50% overfill, all expanders demonstrated a logarithmic increase in projection (mean increase, 143 ± 9%) while maintaining essentially stable base dimensions. Overfill levels in excess of 50% were accompanied by linear increases in height, width, and projection, during which projection approached, but never equaled, base dimensions. Stress versus strain analyses demonstrated nonlinear biomechanical dynamics during the first 50% overfill, followed by standard elastic dynamics up to 400% overfill. At no point during the study, did expander tensions outstrip elastic properties, thereby explaining the lack of device rupture. Conclusions: Through overfilling, tunable geometries of tissue expanders can be accessed that may provide for increasing customization of reconstructions, particularly at overfill volumes up to 50% over indicated capacity. This study should serve to guide tissue expander selection and fill volumes that surgeons may implement in obtaining ideal reconstructed breast shapes.
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    Development of a Charting Method to Monitor the Individual Performance of Surgeons at the Beginning of Their Career
    (Public Library of Science, 2012) Peix, Jean-Louis; Colin, Cyrille; Kraimps, Jean-Louis; Menegaux, Fabrice; Pattou, François; Sebag, Fréderic; Voirin, Nicolas; Touzet, Sandrine; Bourdy, Stéphanie; Lifante, Jean-Christophe; Duclos, Antoine; Carty, Matthew; Lipsitz, Stuart
    Background: Efforts to provide a valid picture of surgeons’ individual performance evolution should frame their outcomes in relation to what is expected depending on their experience. We derived the learning curve of young thyroidectomy surgeons as a baseline to enable the accurate assessment of their individual outcomes and avoid erroneous conclusions that may derive from more traditional approaches. Methods: Operative time and postoperative recurrent laryngeal nerve palsy of 2006 patients who underwent a thyroidectomy performed by 19 young surgeons in five academic hospitals were monitored from April 2008 to December 2009. The database was randomly divided into training and testing datasets. The training data served to determine the expected performance curve of surgeons during their career and factors influencing outcome variation using generalized estimating equations (GEEs). To simulate prospective monitoring of individual surgeon outcomes, the testing data were plotted on funnel plots and cumulative sum charts (CUSUM). Performance charting methods were utilized to present outcomes adjusted both for patient case-mix and surgeon experience. Results: Generation of performance curves demonstrated a gradual reduction in operative time from 139 (95% CI, 137 to 141) to 75 (71 to 80) minutes, and from 15.7% (15.1% to 16.3%) to 3.3% (3.0% to 3.6%) regarding the nerve palsy rate. Charts interpretation revealed that a very young surgeon had better outcomes than expected, whereas a more experienced surgeon appeared to be a poor performer given the number of years that he had already spent in practice. Conclusions: Not considering the initial learning curve of surgeons exposes them to biased measurement and to misinterpretation in assessing their individual performance for thyroidectomy. The performance chart represents a valuable tool to monitor the outcome of surgeons with the expectation to provide safe and efficient care to patients.
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    Bilateral Free Flap Breast Reconstruction Outcomes: Do Abdominal Scars Affect Bilateral Flaps?
    (Wolters Kluwer Health, 2017) Unukovych, Dmytro; Caterson, Edward; Carty, Matthew; Erdmann-Sager, Jessica; Halvorson, Eric; Caterson, Stephanie
    Background: The incidence of bilateral mastectomies is increasing along with the rates of breast reconstructions. A substantial number of patients will present with abdominal scars after Cesarean section, laparoscopy, laparotomy, and so on. The aim of this study was to evaluate the impact of prior abdominal scars on complication rates in abdominal bilateral free flap breast reconstruction. Methods: All consecutive patients with autologous free flap breast reconstruction between 2007 and 2014 were eligible. The relevant demographic and clinical data were prospectively collected into a study-specific database. Complications and reoperations were prospectively registered after postoperative outpatient visits. Results: Overall, 493 patients underwent abdominally based breast reconstruction during the study period: unilateral (n = 250; 50.7%) or bilateral (n = 243; 49.3%). In the bilateral group, the abdominal scar locations were Pfannenstiel (n = 73; 30.1%), midline (n = 16; 6.6%), lower oblique (n = 17; 7.0%), upper oblique (n = 5; 2.1%), and laparoscopic (n = 69; 28.4%). Four (1.7%) flap failures (including 1 converted to a pedicled transverse rectus abdominis flap) were registered, all occurring in patients from the scar group: 3 with Pfannenstiel incision and 1 patient with prior laparoscopy. Pfannenstiel scar was associated with higher risk of hematoma at the recipient site when compared with no scar group (13.7% versus 2.2%; P = 0.006). Partial flap necrosis, infection, and seroma occurred in 14 (5.9%), 8 (3.4%), and 5 (2.1%) patients, respectively, and no differences between the scar groups were identified. Conclusion: Surgical outcomes of bilateral reconstructions in patients with abdominal scars are generally comparable with ones in patients without prior surgery; however, some problems have been identified. These procedures might have some intraoperative considerations and often require increased operative times. Apart from the traditional preoperative computed tomography angiography, intraoperative imaging (e.g., fluorescence angiography) may be advocated in patients with abdominal scars.