圧電式体外衝撃波結石破砕装置による上部尿路結石の治療成績

Abstract

1年間に体外衝撃砕石術(ESWL)を行った尿路結石患者175例を対象に, 機能的改良を行った圧電式体外衝撃波結石粉砕装置(New Piezolith 2500)の治療成績を検討した.腎結石の部位ではR2が, 大きさではDS-3が最も多かった.尿管結石の部位ではU3が, 大きさではDS-3が最も多かった.又, 結石が大きくなるにつれ治療回数も増加する傾向が見られた.治療後3ヵ月目の有効破砕率は, 腎結石94.3%, 尿管結石86.4%であった.経尿道的尿管砕石術後の粉砕は15例, 経皮的腎砕石術後の粉砕は2例に認められた.合併症は, 腎被膜下血腫1例, 発熱5例であった.結石分析の結果が分かっている45例中, シュウ酸カルシウム+リン酸カルシウム結石が26例と最も多かった

Between August 1999 and July 2000, 123 cases of renal stones and 52 cases of ureteral stones in 116 males and 59 females were treated with the New Piezolith 2500. The average number of sessions required for renal and ureteral stones was 2.50 and 1.48, respectively. At 3 months postoperatively, stone-free rates for renal and ureteral stones were 64.2% and 72.7%, respectively. Assessing residual stones less than 4 mm in diameter as an effective treatment outcome, the efficacy rates for renal and ureteral stones were 94.3% and 86.4%, respectively. Side effects were encountered in 5 cases (2.9%) of high fever and one case (0.57%) of renal subcapsular hematoma. New Piezolith 2500 is effective and safe for the treatment of upper urinary stones.