Scholarlink

<p>To compare outcomes of two holmium: yttrium–aluminum–garnet (Ho:YAG) laser energy–frequency protocols delivered under equal average power during retrograde intrarenal surgery (RIRS) for renal pelvis stones. We retrospectively reviewed 250 adults undergoing unilateral RIRS for a single renal pelvis stone (10–20&#xa0;mm) between January 2022 and November 2025. Patients were treated with Ho:YAG lithotripsy at the same average power (~ 15&#xa0;W) using either 0.3&#xa0;J × 50&#xa0;Hz (<i>n</i> = 120) or 1.5&#xa0;J × 10&#xa0;Hz (<i>n</i> = 130). All cases were performed with a digital flexible ureterorenoscope and a suction-enabled ureteral access sheath (FANS). The primary outcome was stone-free status at 4–6 weeks, defined as the absence of clinically significant residual fragments (≤ 2&#xa0;mm). Secondary outcomes were laser activation time, complications, and reintervention. Subgroup analyses were performed by stone size and stone density (Hounsfield units, HU). Baseline characteristics were similar between groups. Stone-free rate was higher with 0.3&#xa0;J × 50&#xa0;Hz than with 1.5&#xa0;J × 10&#xa0;Hz (84.2% vs. 73.1%, <i>p</i> = 0.048), and reintervention was lower (7.5% vs. 18.5%, <i>p</i> = 0.018). Laser activation time was slightly longer in the 0.3&#xa0;J × 50&#xa0;Hz group (median 30 vs. 29&#xa0;min, <i>p</i> = 0.038). In both protocols, stones &gt; 15&#xa0;mm and HU ≥ 1200 were associated with lower stone-free rates and longer activation times. Under equal average power, 0.3&#xa0;J × 50&#xa0;Hz achieved higher stone-free rates and fewer reinterventions than 1.5&#xa0;J × 10&#xa0;Hz for renal pelvis stones.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Equal-power Ho:YAG laser energy–frequency modulation during RIRS for renal pelvis stones: 0.3 J × 50 Hz vs. 1.5 J × 10 Hz

  • 期刊论文

  • 发表日期：

    2026年2月28日

查看全文
  • Mehmet Sevim,
  • Hakan Şığva,
  • Muhammed Tosun,
  • Erkan Bağtaş

摘要

To compare outcomes of two holmium: yttrium–aluminum–garnet (Ho:YAG) laser energy–frequency protocols delivered under equal average power during retrograde intrarenal surgery (RIRS) for renal pelvis stones. We retrospectively reviewed 250 adults undergoing unilateral RIRS for a single renal pelvis stone (10–20 mm) between January 2022 and November 2025. Patients were treated with Ho:YAG lithotripsy at the same average power (~ 15 W) using either 0.3 J × 50 Hz (n = 120) or 1.5 J × 10 Hz (n = 130). All cases were performed with a digital flexible ureterorenoscope and a suction-enabled ureteral access sheath (FANS). The primary outcome was stone-free status at 4–6 weeks, defined as the absence of clinically significant residual fragments (≤ 2 mm). Secondary outcomes were laser activation time, complications, and reintervention. Subgroup analyses were performed by stone size and stone density (Hounsfield units, HU). Baseline characteristics were similar between groups. Stone-free rate was higher with 0.3 J × 50 Hz than with 1.5 J × 10 Hz (84.2% vs. 73.1%, p = 0.048), and reintervention was lower (7.5% vs. 18.5%, p = 0.018). Laser activation time was slightly longer in the 0.3 J × 50 Hz group (median 30 vs. 29 min, p = 0.038). In both protocols, stones > 15 mm and HU ≥ 1200 were associated with lower stone-free rates and longer activation times. Under equal average power, 0.3 J × 50 Hz achieved higher stone-free rates and fewer reinterventions than 1.5 J × 10 Hz for renal pelvis stones.