Table 1 Excluded studies and reasons for exclusion

Manning et al. [10]

This study did not report the time from admission to theater.

Harty et al. [11]

Antiplatelet intervention group was with delayed surgery for more than 5 days.

Dettoni et al. [12]

Both antiplatelet intervention group and control group were discontinued for more than 5 days before surgery.

Leonidou et al. [13]

Antiplatelet intervention group was with delayed surgery for more than 5 days.

Nwachuku et al. [14]

These groups were divided into early surgery group or delayed surgery group based on the time from admission to theater less than or more than 48 h.

Lee et al. [15]

The study compared non-antiplatelet medication.

Drescher et al. [16]

The study compared non-antiplatelet medication.

Kulachote et al. [17]

The intervention group was with non-antiplatelet drugs concurrently.

Akaoka et al. [18]

The intervention group was with non-antiplatelet drugs concurrently.

Purushothaman et al. [19]

These groups were divided into early surgery group or delayed surgery group based on the time from admission to theater less than or more than 48 h.

Hwang et al. [20]

The intervention group was with non-antiplatelet drugs concurrently.

Zhang et al. [21]

Antiplatelet intervention group was with delayed surgery for more than 5 days.

Lott et al. [22]

The intervention group was with non-antiplatelet drugs concurrently.

Hoerlyck et al. [23]

The study compared non-antiplatelet medication.