ureteroscopy

Asymptomatic Stones: Remove Each Piece? Or Leave in Peace?

Benjamin K. Canales, MD, MPH discusses the prevalence and natural history of asymptomatic kidney stones, emphasizing that while these stones may not initially cause symptoms, they have the potential to lead to significant complications, including pain, infection, and obstruction. He identifies various factors that influence the decision-making process, such as stone size, location, composition, and patient-specific factors including age, comorbidities, and risk of future stone-related events.

Dr. Canales discusses the current guidelines and evidence-based practices for managing asymptomatic stones, including the benefits and risks associated with both intervention and observation. He highlights the criteria for selecting patients who may benefit from proactive treatment, such as those with high-risk anatomical features or a history of recurrent stones, and scenarios where a conservative approach, involving regular monitoring and preventive measures, may be more appropriate.

Technological advancements and surgical techniques have improved the safety and efficacy of stone removal procedures. Dr. Canales reviews minimally invasive options, such as ureteroscopy and percutaneous nephrolithotomy, and their role in the management of asymptomatic stones. The presentation includes a discussion on the potential complications of these procedures and the importance of patient counseling to set realistic expectations.

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Emerging Topics in Ureteroscopy: Pressure, Temperature, and Suction

Seth K. Bechis, MD, discusses methods to reduce pain, sepsis, and other complications in the use of ureteroscopy to treat renal conditions. He begins by examining the relationship between intrarenal pressure (IRP), pain, and infection. He discusses the importance of monitoring IRP during ureteroscopy, and explores methods of reducing IRP, including irrigation control.

Dr. Bechis then discusses the issue of thermal injury in ureteroscopy. He illustrates the benefits of proper irrigation, shorter laser pedal activation time, and laser setting in preventing the denaturation of proteins in the kidney. He compares the temperatures generated by Holmium and TFL lasers, noting that TFL is a higher-energy option.

Dr. Bechis concludes by examining the role of suction in renal stone removal. He presents a demonstration of various suction devices and discusses their strengths and limitations. He warns that the use of a suction device lengthens the duration of the procedure and that suction still has room for improvement as a treatment.

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