Miniaturized Ambulatory Percutaneous Nephrolithotomy Versus Flexible Ureteroscopy in the Management of Lower Calyceal Renal Stones 10-20 mm: A Propensity Score Matching Analysis.

OBJECTIVE: To evaluate the efficacy of ambulatory mini percutaneous nephrolithotomy (Mini-PCNL) and flexible ureteroscope (F-URS) in treating 10-20 mm lower calyceal stones using propensity score matching analysis (PSM). PATIENTS AND METHODS: A retrospective analysis of 136 adult patients that underwent Mini-PCNL or F-URS for a single lower calyx calculus. Participants that underwent F-URS were allocated to Group I, while those who underwent Mini-PCNL were assigned to Group II. Patients were discharged on the same day and followed up by CT after 3 months. Both groups were matched by stone size and density using propensity stone matching (PSM) and the matched group were further compared. RESULTS: Before matching, there were statistical differences in stone size (P = .02), preoperative hydronephrosis (P = .004), and Hounsfield Unit (P = .04) between both groups. A logistic regression model was created between independent variables such as stone size and density. The new groups following PSM were statistically similar in terms of age, BMI, stone size, and HFU (P = .43, P = .74, P = .49, P = .36). The stone-free rates after PSM was not significantly higher in the Mini-PCNL group than the F-URS group (91.7% vs 81.7%, respectively P = .1) while the operative time for the F-URS group was significantly shorter than the Mini-PCNL group 54 (49-64.3) minutes vs 68.2 (62-73.5) minutes, respectively, P = .045. CONCLUSION: Ambulatory Mini-PCNL and F-URS have a comparable hospital stay, stone-free rates, and complication rates for treating lower calyceal stones 10-20 mm. Both techniques may be considered acceptable treatment options, with a prolonged operative time in Mini-PCNL.

Bacillus Calmette-Guerin vaccine and bladder cancer incidence: Scoping literature review and preliminary analysis.

BACKGROUND: The Bacillus Calmette-Guerin (BCG) vaccine has long been used for the prevention of tuberculosis (TB) around the world. BCG is also used as an immunotherapy agent for the treatment of non-muscle invasive urinary bladder cancer. This scoping literature review and preliminary data analysis aims to summarize the literature correlating infantile BCG vaccination with the incidence of future bladder cancer. METHODS: Studies were identified by a formal literature search of MEDLINE and Cochrane Central Registrar of Controlled Trials following PRISMA guidelines. Preliminary data analysis was conducted on publicly accessible data summarizing the impact of gender, BCG vaccination, and socio-economic effects on crude and age-standardized rates of bladder cancer. RESULTS: As part of our analysis, preliminary regression models demonstrated BCG vaccination status, gender, and socio-economic status to have statistically significant effects on crude and age-standardized rates of bladder cancer incidence. BCG vaccination was associated with a 35-37% lower age-standardized rate of bladder cancer incidence. CONCLUSIONS: There is very little literature examining the relationship between prior BCG vaccination and rates of bladder cancer incidence. Our limited data analysis indicates that a relationship does exist between infantile BCG vaccination and later bladder cancer development, although extensive future investigation is needed in this area.

Rescheduling of Cancelled Elective Surgical Procedures Among Older Adults Post-COVID-19.

The COVID-19 pandemic has recently put a stop to elective surgical procedures across Canada, inherently compounding already lengthy waitlists that exist within most disciplines of surgery. These long waits for elective procedures within Canadian provinces have not been caused by the COVID-19 pandemic; it is an acute-on-chronic issue that has been exacerbated by the ongoing COVID-19 pandemic. As hospitals begin to reschedule elective surgeries, patients are likely to be prioritized by clinical urgency using both established and newly created surgical triage severity scales. The objective of this commentary is to discuss issues related to the rebooking of elderly surgical patients during the COVID-19 pandemic within the context of northern medicine. Northern and rural hospitals may already face a multitude of barriers related to the rebooking of surgical patients due to a paucity of available surgical resources, as well as difficulties related to accessing care at the local level. While current surgical rebooking tools have been developed in response to the COVID-19 pandemic, they fail to explore certain risks related to the older adult population which may lead to increased mortality and morbidity. Review of the literature indicates that redistribution of surgical resources for older adults in the COVID-19 era will require consideration of clinical medical ethics vs. population health ethics regarding who should be prioritized in re-bookings for elective surgical procedures. This should be done in conjunction with encompassing surgical triage severity scales specifically made for older adults in the time of COVID-19.

Creating a Lactation-Friendly Learning Environment for Medical Students and Residents: A Northern Canadian Perspective.

Background: Lactation is a normal postpartum physiological process that can continue in excess of 3 years and is often the sole nutritional source for infants in the first 6 months of life. Breastfeeding not only provides infant nutrition, but also facilitates maternal-infantile bonding. Lactating mothers separated from their children face multiple challenges in finding and accessing appropriate spaces and time for milk expression. Maternal employment is a great barrier to breastfeeding and accordingly has led to multiple advancements in the area of breastfeeding policy. One example of a policy is the Baby-Friendly Initiative. This initiative focused on breastfeeding promotion, support, and protection. However, the impact of such campaigns on lactating medical students and residents is thought to be low. Furthermore, breastfeeding rates differ vastly according to geographic locations in North America. Trends indicate decreased rates of breastfeeding in northern rural areas in comparison with southern urban counterparts. This highlights the need for increased protection, support, and creation of safe-lactation spaces for all working mothers including medical students and residents, and especially those in rural areas. Goals: To review challenges of breastfeeding as a medical trainee and delineate the creation of a lactation policy for medical learners and residents. Methodology: We conducted a literature review of breastfeeding policy and experiences of breastfeeding while in the learning environment. Results: Challenges of breastfeeding in medical school and residency include the complex, high-paced medical working environment where taking breaks or time off is often difficult. Few medical schools across North America have any breastfeeding policy. Conclusion: The Northern Ontario School of Medicine's lactation policy serves as a possible solution to the barriers medical students and residents face when breastfeeding in the academic environment. This policy creates lactation-friendly medical learning spaces through the entitlement of dedicated space and time for milk expression.