Study Endpoints and definitions
Short‐term outcomes included: 30-day mortality, 30-day Major Adverse
Cardiac and Cerebral Events(MACCE), reoperation for bleeding and deep
sternal wound infection(DSWI). MACCE was defined as composite of
mortality, myocardial infarction and stroke. MI was defined according to
the fourth international definition of MI14. Stroke
was defined as the development of a new permanent neurologic deficit as
confirmed by stroke team member assessment of the patient and computed
tomography of the central nervous system, magnetic resonance imaging, or
at autopsy examination. DSWI was defined by the Center for Disease
Control and Prevention15. Incomplete
revascularization(IR) was defined according to anatomic definition where
at least one vessel with a stenosis(>50%) and a size of
>1.5mm was not revascularized16.
The long‐term outcome was all‐cause mortality, which is considered as an
objective and unbiased endpoint for comparative
studies17. Information about death at follow-up was
retrieved from the National Health Care registry of the Ministry of
Health of the Republic of Poland, that stores and analyses all
health‐related data. Data regarding postoperative outcomes were
available for all patients in the study.