Publications by authors named "John Masterson"

Background: Guidelines for prostate cancer treatment in men with limited life expectancy are based on expert opinion. Patient preferences for when to defer treatment based on longevity are unknown. We sought to define life expectancy thresholds at which men are more likely to choose conservative management in the context of varying risks of cancer death and treatment-related side effects.

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Objectives: To describe the effect of multimorbidity on adverse patient centred outcomes in people attending emergency department.

Design: Population based cohort study.

Setting: Emergency departments in NHS Lothian in Scotland, from 1 January 2012 to 31 December 2019.

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Objective: To improve our previous simulation-based training module by using sustainable material to mold an anatomically accurate terrain and reproducing major vascular injuries encountered during robot-assisted nephrectomy.

Methods: The simulator was built with a pump, gauge, and valve linked via silicone tubing. Artificial blood was made from cornstarch, water, and red dye, and pumped through 3D-Med artificial vessels with the dimensions of an average renal artery.

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Purpose: Factors increasing the risk of maternal critical illness are rising in prevalence in maternity populations. Studies of general critical care populations highlight that severe illness is associated with longer-term physical and psychological morbidity. We aimed to compare short- and longer-term outcomes between women who required critical care admission during pregnancy/puerperium and those who did not.

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Background: Physician treatment preference may influence how risks are communicated in prostate cancer consultations. We identified persuasive language used when describing cancer prognosis, life expectancy, and side effects in relation to a physician's recommendation for aggressive (surgery/radiation) or nonaggressive (active surveillance/watchful waiting) treatment.

Methods: A qualitative analysis was performed on transcribed treatment consultations of 40 men with low- and intermediate-risk prostate cancer across 10 multidisciplinary providers.

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Introduction: The purpose of this study was to determine which characteristics of urology residency programs are most highly valued by medical students and residents, and how these change during training.

Materials And Methods: We distributed a survey to urology residents and medical students interested in urology via program director email and social media. The survey collected demographic data, future career plans, and asked respondents to rank the relative importance of six categories of residency program characteristics and specific characteristics within each category.

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Background: Reconstructive urologists often place both a urethral and suprapubic catheter intraoperatively to prevent extravasation of undrained urine across anastomosis sutures. As no consensus exists on which catheter drains the bladder more completely, many surgeons leave one catheter to gravity drainage and cap the other postoperatively. We sought to identify differences in catheter urine outflow during dual bladder drainage with suprapubic and urethral catheters in postoperative urology patients.

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Objective: This study aims to describe our technique and review our experience with synchronous robotic bilateral nephrectomy for large kidneys in ADPKD with the da Vinci XI and da Vinci Single Port platforms (Intuitive Surgical, Sunnyvale, CA).

Materials And Methods: We performed a retrospective review of all robotic bilateral nephrectomy cases from January 2020 to present at a high-volume robotic single centre. Demographic data and perioperative details including preoperative CT scans, indication for nephrectomy and renal function were collected.

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COVID-19 has disproportionately affected socially vulnerable communities characterized by lower income, lower education attainment, and higher proportions of minority populations, among other factors (1-4). Disparities in COVID-19 incidence and the impact of vaccination on incidence disparities by community income were assessed among 81 communities in Los Angeles, California. Median community vaccination coverage and COVID-19 incidence were calculated across household income strata using a generalized linear mixed effects model with Poisson distribution during three COVID-19 surge periods: two before vaccine availability (July 2020 and January 2021) and the third after vaccines became widely available in April 2021 (September 2021).

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Background: Trainee autonomy has eroded over time as surgery has become more subspecialized and as attending oversight has increased, causing many trainees to seek additional fellowship training beyond residency. Less clear is whether there are cases that attendings view as "fellowship-level" or "privileged" cases in which resident-level trainees should not have high levels of autonomy due to complexity or high-stakes outcomes.

Objective: We sought to better understand current attitudes and practices with regards to trainee autonomy in hypospadias repair as it represents a high complexity procedure within pediatric urology.

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Background: While both the number (+LN) and density (LND) of metastatic lymph nodes on radical prostatectomy lymphadenectomy predict mortality in prostate cancer, the independent impact of each on overall mortality (OM) is unknown.

Methods: We sampled men who underwent radical prostatectomy and lymphadenectomy between 2004 and 2013 from the National Cancer Database. Multivariable Cox proportional hazards analysis with restricted cubic spline was used to assess the non-linear association of +LN count and LND with OM.

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Article Synopsis
  • Testosterone therapy (TT) prescriptions have risen recently to address testosterone deficiency.
  • Both short-acting and long-acting TT effectively restore normal testosterone levels and alleviate deficiency symptoms.
  • Short-acting TT mimics natural hormone levels better but needs multiple daily doses, while long-acting TT boosts patient adherence but can lead to excessively high testosterone levels and potential health issues.
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Interstitial cystitis/bladder pain syndrome is a poorly understood yet prevalent condition accounting for a significant proportion of urology office visits. Identification of reliable biomarkers for disease remains an important yet challenging area of research given the heterogeneity of disease presentation and pathophysiology. A review of the literature by the authors revealed a handful of original investigations that revealed promising biomarkers within various physiologic processes or organ systems including immunity, inflammation, neural pathways, urothelial integrity, and anesthetic bladder capacity.

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Objective: To describe a novel method to convert a closed-system suction drain to a highly efficient closed-system gravity-dependent drain and demonstrate its efficacy in an ex-vivo model.

Methods: We reviewed the 5 top-selling urology and surgery text/reference books for information on drainage systems. An ex-vivo model was designed with a reservoir of fluid connected to a Jackson-Pratt bulb drain.

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Introduction: YouTube is the most popular open access media-sharing platform and is the second most visited websites worldwide. However, due to a lack of peer-review, YouTube is largely unregulated and can be susceptible to the spread of biased or misleading information.

Objective: To evaluate the quality and potential bias of videos pertaining to newborn male circumcision (NMC) on YouTube.

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Introduction: We aimed to analyze the testicular histopathology of men who died with active COVID-19 infection.

Methods: We performed autopsy of eight consecutive men who died of COVID-19 pneumonia. Lung and testis tissue of all men were stained for SARS-CoV-2 nucleocapsid, angiotensin-converting enzyme 2 (ACE-2) receptor immunohistochemistry (IHC).

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Background: Erectile dysfunction (ED) is a very common complication in men with diabetes mellitus (DM). Low-intensity extracorporeal shockwave therapy (Li-ESWT) offers a promising nonsurgical treatment option for ED. A systematic scoping review investigating the outcomes of Li-ESWT in diabetic men with ED has not yet been performed.

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The prevalence of both obesity and hypogonadism in the United States has increased over the past two decades. While prior studies have shown an association between obesity and secondary hypogonadism-low testosterone and luteinizing hormone-few have used a large enough sample size to determine prevalence at each body mass index class. We aimed to compare rates of secondary hypogonadism among body mass index classes by constructing a retrospective database with men who had their body mass index, morning testosterone and luteinizing hormone levels measured during a visit to a urology clinic at a tertiary academic medical center between 2011-2020.

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It has been proposed that men hospitalised with COVID-19 be treated with oestrogen or progesterone to improve COVID-19 outcomes. Transgender women (male-to-female) are routinely treated with oestrogen or oestrogen +progesterone for feminisation which provides a model for the effect of feminising hormones on testicular tissue. Our goal was to analyse differences in ACE-2 expression in testicles of trans-women taking oestrogen or oestrogen +progesterone.

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Object: To use a contemporary population-based cohort to investigate temporal trends in the national incidence of pelvic fracture urethral injuries (PFUIs) in the United States.

Methods: Using the NIS (National Inpatient Sample), we identified patients with a severe PFUI by a combination of an ICD-9 diagnosis code for pelvic fracture (808.xx) and ICD-9 procedure code for suprapubic tube (57.

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Objective: To better understand patient experience, risk factors, culture, and ED outcomes surrounding recreational ICI use that led to ischemic priapism.

Methods: After IRB approval, men presenting for ischemic priapism secondary to recreational ICI use from January 2010 to December 2018 were contacted by mail and then via telephone. Standardized questions were asked of all study participants on the topics of erectile function (IIEF-5), sexual practices, and at-risk behavior at the time of priapism.

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Purpose Of Review: Among the growing elderly population, sexual health remains an important concern for individuals and couples. An understanding of the expected changes with aging and taking care of aging men and women is important for treating sexual dysfunction. Sexual health issues related to aging can be both linked between men and women and independent.

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Objective: To evaluate patient-specific and perioperative factors that may be predictive of bladder perforation during midurethral sling placement.

Methods: A retrospective chart review of women who underwent a midurethral sling procedure at our institution between 2013 and 2017 was completed. All cases with bladder perforation were included.

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Background: Ischemic priapism is treated with a stepwise algorithm, but some patients may benefit from immediate shunt placement.

Aim: To identify risk factors for surgical shunt placement in a large series of patients with ischemic priapism.

Methods: We identified all patients presenting to our institution with ischemic priapism from January 2010 to December 2018.

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