Which medication class can facilitate passage of ureteral stones?

Which medication class can facilitate passage of ureteral stones?

• A. Antibiotics
• B. Alpha blockers
• C. Diuretics
• D. Proton pump inhibitors

Answer: (B)

Relaxation of ureteral smooth muscle via alpha-adrenergic blockade helps stones move more easily through the ureter, especially at the distal portion where they commonly get stuck at the junction with the bladder. This approach, often called medical expulsive therapy, uses alpha blockers such as tamsulosin to reduce spasm and lower the resistance the stone encounters, increasing the chance of spontaneous passage and usually shortening the time to passage for small-to-moderate distal stones. It’s most effective for stones in the distal ureter, typically less than about a centimeter, and not suitable when there’s infection or significant obstruction with impaired kidney function. Antibiotics address infection, diuretics do not reliably promote stone expulsion, and proton pump inhibitors have no role in facilitating ureteral stone passage.

Relaxation of ureteral smooth muscle via alpha-adrenergic blockade helps stones move more easily through the ureter, especially at the distal portion where they commonly get stuck at the junction with the bladder. This approach, often called medical expulsive therapy, uses alpha blockers such as tamsulosin to reduce spasm and lower the resistance the stone encounters, increasing the chance of spontaneous passage and usually shortening the time to passage for small-to-moderate distal stones. It’s most effective for stones in the distal ureter, typically less than about a centimeter, and not suitable when there’s infection or significant obstruction with impaired kidney function. Antibiotics address infection, diuretics do not reliably promote stone expulsion, and proton pump inhibitors have no role in facilitating ureteral stone passage.