在进行冠状动脉血管塑造的医院中,体积与结果关系的演变
V Ho1
1John M. Olin School of Business, Washington University, St Louis, MO 63130-4899, USA. ho@olin.wustl.edu
Circulation
|April 19, 2000
概括
医院手术的数量会影响患者的治疗结果. 这项研究表明,随着时间的推移,所有医院的结果都有所改善,缩小了皮肤透光冠状动脉血管造形术 (PTCA) 的低体积和高体积中心之间的差距.
科学领域:
- 心血管外科心血管外科
- 医疗保健服务研究 医疗服务研究
- 改善医疗质量 改善医疗质量
背景情况:
- 医院中手术手术量较高通常与更好的患者结果有关.
- 本研究探讨了医疗保健中体积与结果关系的历史趋势.
研究的目的:
- 为了检查通过皮肤进行透光冠状动脉血管塑造 (PTCA) 程序的体积-结果关系的随时间演变.
- 根据不同时间段的医院PTCA体积,评估住院死亡率和绕道手术率的变化.
主要方法:
- 分析了1984年至1996年期间在加利福尼亚州治疗的353,488例患者病例.
- 利用描述性统计和后勤回归来比较三个不同的时间间隔的结果:1984-1987,1988-1992和1993-1996.
- 检查了与医院PTCA手术量相关的医院内死亡率和绕道手术率 (<200对>400次手术/年).
主要成果:
- 低容量 (<200 PTCA/年) 与高容量 (>400 PTCA/年) 的医院住院死亡率从2.5%与1.3% (1984-1987) 降至1.7%与1.3% (1993-1996).医院住院死亡率从2.5%与1.3% (1984-1987) 降至1.7%与1.3% (1993-1996).
- 在研究期间,绕道手术率在低体积 vs 高体积医院缩小和下降,从12.4% vs 6.9%降至4.6% vs 3.3%
- PTCA体积显著预测死亡率和绕道率,低体积医院的结果改善与高体积中心的好处相比.
结论:
- 随着时间的推移,PTCA的低体积和高体积医院之间的结果差异显著缩小.
- 所有医院都在患者结局方面表现出了显著的改善,无论初始体积如何.
- 对于PTCA,较低的最低体积标准可能在服务不足的地区是合适的,而在这些地区,血管整形手术是不可用的.
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