残尿測定における携帯型3次元超音波断層装置(BVI6100)の有用性 : 経腹的超音波断層法との比較検討

Abstract

腎泌尿器科患者延べ177例(男126例, 女51例, 平均年齢70.5歳)を対象として, BVI6100男性モード(BVI男性モード)・女性モード(BVI女性モード)・超音波断層法による残尿測定を施行し, カテーテル導尿による残尿測定値を実測値として比較した。全症例において実測値に対する誤差率は超音波断層法42.7%, BVI男性モード50.6%, BVI女性モード65.8%であり, BVI女性モードは有意に誤差率が高かった。性別による比較では男性および女性どちらに対してもBVI女性モードよりBVI男性モードの誤差率は有意に低かった。携帯型3次元超音波断層装置は超音波断層法による残尿測定とほぼ同等の精度を示し, 操作が簡便で短時間に疼痛を伴うことなく施行できるため有用であると思われた。

In 177 patients, we evaluated the efficacy of a portable 3-dimensional ultrasound scanning device (Bladder Scan BVI6100) in measurement for residual urine volume, compared with transabdominal ultrasound estimation, using values measured by urethral catheterization as actual values. A high correlation was demonstrated between values measured by BVI6100 and actual values. Error rates of the values measured by BVI6100 male mode, female mode and transabdominal ultrasound estimation to actual values were 42.7 +/- 32.6, 50.6 +/- 63.3 and 65.8 +/- 43.7%, respectively. The error rate of the values measured by BVI6100 female mode was significantly higher than that by BVI6100 male mode or transabdominal ultrasound estimation. Irrespective of patient sex, the error rate of the values measured by BVI6100 in male mode was significantly lower than that in female mode. Therefore, BVI6100 male mode was considered to be a useful alternative for measurement of residual urine with accuracy similar to that of transabdominal ultrasound estimation.