Background:With the rapid spread of COVID-19, hospitals providing percutaneous coronary intervention (PCI) were placed in unique and unfamiliar circumstances. This study evaluated variations in the treatment of coronary artery disease according to time course of the COVID-19 pandemic in Japan.

Methods and Results:The Japanese Association of Cardiovascular Intervention and Therapeutics performed serial surveys during the pandemic (in mid-April, late-April and mid-May 2020) with queries regarding the implementation of PCI. Hospitals were asked about their treatment strategies for elective PCI and emergency PCI for ST-elevation myocardial infarction (STEMI) and high-risk acute coronary syndrome (ACS) patients. Most hospitals opted to perform primary PCI in the usual manner at the beginning of the pandemic. As the pandemic progressed, hospitals in the 7 populated areas downgraded the performance of PCI for chronic coronary syndrome and high-risk ACS, but not for STEMI patients. After the state of emergency was lifted in most prefectures in mid-May, the rate of PCI gradually normalized. Screening tests, such as polymerase chain reaction and chest computed tomography, in ACS were frequently used.

Conclusions:The COVID-19 pandemic greatly affected PCI treatment in Japan. However, even in the most critical situations during the pandemic, most institutions continued to perform primary PCI normally for STEMI patients.

背景：随着COVID-19的迅速普及，提供经皮冠状动脉介入治疗（PCI）的医院处于独特而陌生的环境中。这项研究根据日本COVID-19大流行的时间进程评估了冠状动脉疾病治疗的差异。

方法和结果：日本心血管介入与治疗学会在大流行期间（2020年4月中旬，4月下旬和5月中旬）进行了一系列调查，询问有关PCI实施的问题。医院被问及针对ST抬高型心肌梗死（STEMI）和高危急性冠脉综合征（ACS）患者的选择性PCI和紧急PCI的治疗策略。在大流行开始时，大多数医院选择以通常的方式进行主要PCI。随着大流行的进展，人口稠密的7个地区的医院降低了PCI在慢性冠状动脉综合征和高危ACS方面的表现，但对STEMI患者却没有。大多数州在5月中旬解除紧急状态后，PCI率逐渐恢复正常。筛检，

结论：在日本，COVID-19大流行极大地影响了PCI治疗。但是，即使在大流行期间最紧急的情况下，大多数机构仍继续为STEMI患者正常执行主要PCI。