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要約 目的:緑内障薬物治療の多剤併用時おけるブリモニジン酒石酸塩(BMD)・ブリンゾラミド(BZM)配合点眼薬の有効性と副作用を検討する。
対象と方法:緑内障点眼薬を2剤以上併用している開放隅角緑内障患者を対象に,使用している緑内障点眼薬のうち,BMDとドルゾラミド(DRZ)の併用またはBMDとBZMの併用をBMD/BZM配合点眼薬に変更した群(切り替え群)と,BMDまたはBZMをBMD/BZM配合点眼薬に変更した群(追加群)に分けて6か月間観察した。
結果:切り替え群は21眼,追加群は15眼であった。眼圧は,切り替え群では変更前12.9±2.1mmHgが切り替え後6か月で12.6±1.7mmHgと有意差を認めなかった。追加群では,変更前17.0±4.3mmHgが変更後6か月で13.3±2.9mmHgと有意な眼圧下降が認められた。BMD/BZM配合点眼薬使用前の点眼内容別の眼圧推移は,BZMとBMDの併用からBMD/BZM配合点眼薬に切り替えた15眼の眼圧下降率は2.3%であった。DRZとBMDの併用からBMD/BZM配合点眼薬に切り替えた6眼の眼圧下降率は−5.5%であった。一方,BMDからBMD/BZM配合点眼薬に切り替えた11眼の眼圧下降率は18.6%であった。BZMからBMD/BZM配合点眼薬に切り替えた4眼の眼圧下降率は22.9%であった。両群ともに点眼継続が困難となる重篤な副作用は発現しなかった。
結論:BMDまたはBZMからBMD/BZM配合点眼薬への切り替え,BMD+BZMまたはBMD+DRZからBMD/BZM配合点眼薬への変更は眼圧下降効果において有効である。
Abstract Purpose:We investigated the intraocular pressure(IOP)-lowering effect and side effects of brimonidine tartrate/brinzolamide combination ophthalmic drops(BMD/BZM)when used in combination with multiple medications for glaucoma treatment.
Methods:We divided the subjects into two groups:one in which brimonidine tartrate(BMD)and dorzolamide(DRZ)or brinzolamide(BZM)were changed to BMD/BZM in antiglaucoma eye drops used for primary open-angle glaucoma(broad sense)patients who were using two or more antiglaucoma eye drops in combination(switching group), and the other in which BMD or BZM and DRZ were changed to BMD/BZM(addition group);the patients were observed for 6 months.
Result:There were 21 eyes in the switch group and 15 eyes in the addition group. The IOP in the switching group was 12.9±1.9 mmHg before the change, but 12.6±1.7 mmHg 6 months after the change, with no significant difference. In the additional group, there was a significant reduction in the IOP from 17.0±2.9 mmHg before the change to 13.3±2.9 mmHg 6 months after the change. The reduction in IOP was 2.3% in the 15 eyes for which the combination of BZM and BMD was changed to BMD/BZM ophthalmic drops, and −5.5% in the 6 eyes for which the combination of DRZ and BMD was changed to BMD/BZM ophthalmic drops. The rate of IOP reduction in the 11 eyes for which BMD was changed to BMD/BZM was 18.6%, and the rate of IOP reduction in the 4 eyes for which BZM was switched to BMD/BZM was 22.9%. No serious side effects leading to a difficulty in continuing the eye drops in either group.
Conclusion:Switching from BMD or BZM to the BMD/BZM combination or from the BMD+BZM(DRZ)to the BMD/BZM combination ophthalmic drops is effective in terms of IOP reduction.
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