Table 1 Number and type of operations, risk assessment, and major post-operative complications during the initial pandemic response compared to the pre-COVID-19 era

Age, mean (SD)

65.5 (13.4)

66.5 (13.5)

0.45

Male

105 (66.8%)

66 (68%)

0.34

Ethnicity

White

117 (75%)

74 (76%)

0.3

Asian

5 (3%)

2 (2%)

0.2

Black

5 (3%)

2 (2%)

0.46

Other

30 (12%)

19 (20%)

0.23

Ischaemic heart disease

34 (21.7%)

18 (18.6%)

0.274

Chronic lung disease

23 (14.6%)

17 (17.5%)

0.48

Hypertension

96 (61.1%)

62 (63.9%)

0.52

Diabetes

29 (18.5%)

19 (19.6%)

0.28

Dyslipidaemia

57 (36.3%)

30 (30.9%)

0.56

Chronic kidney disease

14 (8.9%)

12 (12.3%)

0.25

Coagulopathy

7 (4.5%)

3 (3.1%)

0.6

Chronic liver disease

3 (1.9%)

2 (2.1%)

0.34

Malignancy

2 (1.3%)

1 (1%)

0.65

Type of operations

AVR

77

52

N/A

AVR + CABG

32

15

N/A

AVR + aortic

29

17

N/A

AVR + MVR

8

3

N/A

Multivalvular/complex

11

10

N/A

Euroscore II (median [IQR])

2.1 [0.9–3.7]

2.7 [1.9–5.2]

0.005

Urgent/emergency setting

22 (14%)

57 (59%)

 < 0.001

NYHA/CCS III/IV

101 (64.3%)

74 (76.3%)

0.112

Endocarditis

7 (4.5%)

11 (11.3%)

0.038

Re-do operations

6 (3.8%)

8 (8.2%)

0.135

30-day mortality

1 (0.6%)

0 (0%)

0.58

Re-sternotomy for bleeding

10 (6.4%)

3 (3.1%)

0.269

TIA/stroke

3 (1.9%)

2 (2.1%)

0.54

New need for RRT

8 (5.1%)

9 (9.3%)

0.186

Pre-operative COVID-19

N/A

0 (0%)

N/A

Post-operative COVID-19

N/A

0 (0%)

N/A