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Dive into the research topics where Matthew Mossanen is active.

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Featured researches published by Matthew Mossanen.


Current Opinion in Urology | 2014

The burden of bladder cancer care: direct and indirect costs.

Matthew Mossanen; John L. Gore

Purpose of review Bladder cancer is a common, complex, and costly disease. Every year in the USA, bladder cancer is responsible for 70 000 diagnosed cases and over 15 000 deaths. Once diagnosed, patients with nonmuscle invasive bladder cancer (NMIBC) are committed to a lifetime of invasive procedures and potential hospitalizations that result in substantial direct and indirect costs. Recent findings Bladder cancer is the most costly cancer among the elderly, estimated at nearly


The Journal of Urology | 2014

Use and outcomes of extended antibiotic prophylaxis in urological cancer surgery.

Joshua K. Calvert; Sarah K. Holt; Matthew Mossanen; Andrew James; Jonathan L. Wright; Michael P. Porter; John L. Gore

4 billion per year, and has the highest cost of any cancer when categorized on a per patient basis. The direct economic cost of NMIBC is fueled by the need for lifelong cystoscopic examination and variations in treatment algorithms. This fiscal burden is further compounded by the indirect impact on psychological health and quality of life of patients and their families. Despite the development of new technologies, such as novel urinary biomarkers and innovative cystoscopic methods, no alternative to cystoscopic surveillance has been established. Summary The management of patients with NMIBC is responsible for a substantial financial burden with indirect costs that extend beyond quantifiable direct costs.


The Journal of Urology | 2015

Overuse of Antimicrobial Prophylaxis in Community Practice Urology

Matthew Mossanen; Joshua K. Calvert; Sarah K. Holt; Andrew James; Jonathan L. Wright; Jonathan D. Harper; John N. Krieger; John L. Gore

PURPOSE Although perioperative antibiotic prophylaxis prevents postoperative infectious complications, national guidelines recommend cessation of antibiotics within 24 hours after the procedure. Extended antibiotic prophylaxis beyond 24 hours may contribute to hospital acquired infections such as Clostridium difficile colitis. We evaluated practice patterns of antibiotic prophylaxis in genitourinary cancer surgery and assessed the impact of antibiotic prophylaxis on hospital acquired C. difficile infections. MATERIALS AND METHODS We identified 59,184 patients treated with radical prostatectomy, 27,921 who underwent partial or radical nephrectomy, and 5,425 treated with radical cystectomy for prostate, kidney and bladder cancers, respectively, from the Premier Perspective Database (Premier Inc., Charlotte, North Carolina) from 2007 to 2012. We constructed hierarchical linear regression models to identify patient and hospital factors associated with extended antibiotic prophylaxis. We evaluated the association between extended antibiotic prophylaxis and C. difficile infections for patients who underwent partial or radical nephrectomy and radical cystectomy with multivariate logistic regression. RESULTS Surgery specific models demonstrated that hospital identity was associated with a substantial proportion of the variation in extended antibiotic prophylaxis (20% to 35% for radical prostatectomy, partial or radical nephrectomy, and radical cystectomy). Postoperative C. difficile colitis occurred in 0.02% of patients treated with radical prostatectomy, 0.23% of those treated with partial or radical nephrectomy and 1.7% of those treated with radical cystectomy. On multivariate analysis extended antibiotic prophylaxis was associated with higher odds of C. difficile infection after partial or radical nephrectomy (OR 3.79, 95% CI 2.46-5.84) and radical cystectomy (OR 1.64, 95% CI 1.12-2.39). CONCLUSIONS Antibiotics may be overused after genitourinary cancer surgery and this overuse is associated with hospital acquired C. difficile colitis. Efforts are needed to encourage greater compliance with evidence-based approaches to postoperative care.


The Journal of Urology | 2010

Percutaneous Cystolithotomy for Calculi in Reconstructed Bladders: Initial UCLA Experience

Alberto Breda; Matthew Mossanen; John T. Leppert; Jonathan D. Harper; Peter G. Schulam; Bernard M. Churchill

PURPOSE We examined index urological surgeries to assess utilization patterns of antimicrobial prophylaxis in a large, community based population. MATERIALS AND METHODS From the Premier Perspectives Database we identified patients who underwent inpatient urological surgeries that are considered index procedures by the ABU (American Board of Urology), including radical prostatectomy, partial or radical nephrectomy, radical cystectomy, ureteroscopy, shock wave lithotripsy, transurethral resection of the prostate, percutaneous nephrostolithotomy, transvaginal surgery, inflatable penile prosthesis, brachytherapy, transurethral resection of bladder tumor and cystoscopy. Procedures were identified based on ICD-9 procedure codes for 2007 to 2012. Antimicrobial administration, class and duration were abstracted from patient billing data. The class and duration of antimicrobials concordant with the 2008 AUA Best Practice Policy Statement was used to determine compliance. RESULTS The overall compliance rate was 53%, ranging from 0.6% for radical cystectomy to 97% for shock wave lithotripsy. Antimicrobial use consistent with AUA Best Practices included the appropriate class in 67% of cases (range 34% to 80%) and the recommended duration in 78% (range 1.2% to 98%). Average prophylaxis duration for procedures for which it is recommended ranged from 1.1 days after brachytherapy to 10.3 days after radical cystectomy. The compliance rate increased from 46% overall in 2007 to 59% overall in 2012. CONCLUSIONS We documented considerable variation in antimicrobial prophylaxis for urological surgery. Compliance with AUA Best Practices increased with time but overall rates remain less than 60%. Efforts are needed to better understand the reasons for variation from recommended antimicrobial prophylaxis for common inpatient urological procedures to help decrease resultant complications and improve outcomes.


Cancer | 2014

Identification of underserved areas for urologic cancer care.

Matthew Mossanen; Jason Izard; Jonathan L. Wright; Jonathan D. Harper; Michael P. Porter; Kenn B. Daratha; Sarah K. Holt; John L. Gore

PURPOSE Following bladder augmentation, patients are at significant risk for bladder calculi. We present our experience with a minimally invasive treatment approach using endoscopically assisted percutaneous cystolithotomy. MATERIALS AND METHODS A retrospective chart review identified 74 patients who underwent percutaneous cystolithotomy following bladder augmentation between 2002 and 2009. Cystogram was performed to determine the ideal location for percutaneous bladder access and a guidewire was inserted in the bladder through a bile needle. A balloon dilator was used to place a 30Fr sheath. Rigid cystoscopy with a 26Fr nephroscope allowed stone treatment by basketing and ultrasonic lithotripsy. A suprapubic 22Fr catheter was then placed. Patients were seen on postoperative day 14 and abdominal ultrasound was performed. If no significant residual calculi were visualized, the suprapubic tube was removed. RESULTS Mean +/- SD patient age at operation was 20 +/- 10.7 months (range 4 to 40). Mean +/- SD time between bladder augmentation and percutaneous cystolithotomy was 4.8 +/- 2.05 years. Of the patients 38 (51%) were male and 36 (49%) were female. Mean +/- SD number of stones per patient was 4.6 +/- 7.8 (range 1 to 60). Ultrasonic lithotripsy was performed in 49 cases (66%). In 25 cases (34%) only stone basketing was performed. A total of 70 patients (95%) were stone-free on abdominal plain film at 14 days. Of the procedures 24 (32%) were performed on an outpatient basis and 50 were performed on an inpatient basis with a mean +/- SD hospital stay of 1.3 +/- 2.7 days (range 1 to 21). There were 9 minor complications noted (12%). CONCLUSIONS Endoscopic percutaneous cystolithotomy offers a safe and effective treatment option for bladder calculi in reconstructed bladders and is the preferred method at our institution.


Human Pathology | 2014

Surgical pathology and the patient: a systematic review evaluating the primary audience of pathology reports.

Matthew Mossanen; Lawrence D. True; Jonathan L. Wright; Funda Vakar-Lopez; Danielle C. Lavallee; John L. Gore

The delivery of urologic oncology care is susceptible to regional variation. In the current study, the authors sought to define patterns of care for patients undergoing genitourinary cancer surgery to identify underserved areas for urologic cancer care in Washington State.


Urologic Oncology-seminars and Original Investigations | 2016

Patient-centered risk stratification of disposition outcomes following radical cystectomy.

Jasmir G. Nayak; John L. Gore; Sarah K. Holt; Jonathan L. Wright; Matthew Mossanen; Atreya Dash

The pathology report is a critical document that helps guide the management of patients with cancer. More and more patients read their reports, intending to participate in decisions about their care. However, a substantial subset of patients may lack the ability to comprehend this often technical and complex document. We hypothesized that most literature on pathology reports discusses reports from the perspective of other physicians and not from the perspective of patients. An expert panel of physicians developed a list of search criteria, which we used to identify articles on PubMed, MEDLINE, Cochrane Reviews, and Google Scholar databases. Two reviewers independently evaluated all articles to identify for detailed review those that met search criteria. We identified the primary audience of the selected articles and the degree to which these articles addressed clarity of communication of pathology reports with patients. Of 801 articles identified in our search, 25 involved the formatting of pathology reports for clarity of communication. Recurrent themes in proposed improvements in reports included content standardization, variation in terminology, clarity of communication, and quality improvement. No articles discussed patients as their target audience. No study evaluated the health literacy level required of patients to comprehend pathology reports. In summary, there is a scarcity of patient-centered approaches to improve pathology reports. The literature on pathology reports does not include patients as a target audience. Limited resources are available to help patients comprehend their reports. Efforts to improve patient-centered communication are desirable to address this overlooked aspect of patient care.


Journal of Interprofessional Care | 2017

Individual, interpersonal, and organisational factors of healthcare conflict: A scoping review

Sara Kim; Naike Bochatay; Annemarie Relyea-Chew; Elizabeth Buttrick; Chris Amdahl; Laura Kim; Elise Frans; Matthew Mossanen; Azhar Khandekar; Ryan Fehr; Young Mee Lee

PURPOSE Patient-centered care involves providing understandable information to facilitate individualized health decisions among patients. We sought to determine the effect of age and comorbidity status on clinically meaningful outcomes following radical cystectomy (RC), in an effort the help optimize patient selection and enhance discussions among those considering surgery. MATERIALS AND METHODS In a retrospective review, 6,460 patients were treated with RC for bladder cancer from the U.S. Premier Perspectives Database between 2007 and 2013. The influence of age and comorbidity count on the rates of inpatient mortality, prolonged length of stay (LOS), disposition to other than home and hospital readmission within the month of surgery or month after, were assessed. Comorbidity was calculated using the Elixhauser method. Prolonged LOS was defined as >10 days. Multivariable logistic regression models were used. RESULTS Following RC, 16% of patients were discharged to somewhere other than home, 37% had a prolonged LOS and 2% died during the index admission. Among those discharged home after surgery, 27% of patients were readmitted. Prolonged LOS was associated with increasing comorbidities and age >70 years (P < 0.001). The adjusted likelihood of readmission increased with increasing burden of comorbid conditions (P < 0.001), however, not with age. The likelihood of being discharged to other than home increased with age and comorbidity count (P < 0.001). Mortality was associated with ≥3 comorbidities and age >70 years. CONCLUSIONS Increasing age and comorbidity are associated with poorer outcomes following RC, with comorbidity being the predominant factor. Our findings may improve surgical selection and better align patient expectations following surgery by providing estimated rates of postoperative events for patients considering RC.


European Urology | 2017

Variations in the Costs of Radical Cystectomy for Bladder Cancer in the USA

Jeffrey J. Leow; Alexander P. Cole; Thomas Seisen; Joaquim Bellmunt; Matthew Mossanen; Mani Menon; Mark A. Preston; Toni K. Choueiri; Adam S. Kibel; Benjamin I. Chung; Maxine Sun; Steven L. Chang; Quoc-Dien Trinh

ABSTRACT Unresolved conflicts among healthcare professionals can lead to difficult patient care consequences. This scoping review examines the current healthcare literature that reported sources and consequences of conflict associated with individual, interpersonal, and organisational factors. We identified 99 articles published between 2001 and 2015 from PubMed, Cumulative Index to Nursing and Allied Health Literature, and Excerpta Medical Database. Most reviewed studies relied on healthcare professionals’ perceptions and beliefs associated with conflict sources and consequences, with few studies reporting behavioural or organisational change outcomes. Individual conflict sources included personal traits, such as self-focus, self-esteem, or worldview, as well as individuals’ conflict management styles. These conflicts posed threats to one’s physical, mental, and emotional health and to one’s ability to perform at work. Interpersonal dynamics were hampered by colleagues’ uncivil behaviours, such as low degree of support, to more destructive behaviours including bullying or humiliation. Perceptions of disrespectful working environment and weakened team collaboration were the main interpersonal conflict consequences. Organisational conflict sources included ambiguity in professional roles, scope of practice, reporting structure, or workflows, negatively affecting healthcare professionals’ job satisfactions and intent to stay. Future inquiries into healthcare conflict research may target the following: shifting from research involving single professions to multiple professions; dissemination of studies via journals that promote interprofessional research; inquiries into the roles of unconscious or implicit bias, or psychological capital (i.e., resilience) in healthcare conflict; and diversification of data sources to include hospital or clinic data with implications for conflict sources.


Urologic Oncology-seminars and Original Investigations | 2014

Readability of urologic pathology reports: The need for patient-centered approaches

Matthew Mossanen; Joshua K. Calvert; Jonathan L. Wright; Lawrence D. True; Daniel W. Lin; John L. Gore

BACKGROUND Radical cystectomy (RC) for muscle-invasive bladder cancer (BCa) has potential for serious complications, prolonged length of stay and readmissions-all of which may increase costs. Although variations in outcomes are well described, less is known about determinants driving variation in costs. OBJECTIVE To assess surgeon- and hospital-level variations in costs and predictors of high- and low-cost RC. DESIGN, SETTING, AND PARTICIPANTS Cohort study of 23 173 patients who underwent RC for BCa in 208 hospitals in the USA from 2003 to 2015 in the Premier Healthcare Database. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Ninety-day direct hospital costs; multilevel hierarchal linear models were constructed to evaluate contributions of each variable to costs. RESULTS AND LIMITATIONS Mean 90-d direct hospital costs per RC was

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John L. Gore

University of Washington

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Steven L. Chang

Brigham and Women's Hospital

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Sarah K. Holt

University of Washington

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Adam S. Kibel

Brigham and Women's Hospital

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Ye Wang

Brigham and Women's Hospital

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Mark A. Preston

Brigham and Women's Hospital

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Daniel Pucheril

Brigham and Women's Hospital

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