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Table 2 Ischemic ECG changes comparing subjects with normal lung function and COPD

From: Ischemic heart disease among subjects with and without chronic obstructive pulmonary disease – ECG-findings in a population-based cohort study

   

NLF n = 612

COPD n = 576

P

Ischemic ECG changes

 

Q-Waves

Any, n (%)

49 (8.7)

48 (8.3)

0.64

  

Major Q/QS, n (%)

20 (3.4)

24 (4.2)

0.42

  

Minor Q/QS, n (%)

29 (4.9)

24 (4.2)

0.66

 

ST-segment depressions

Any, n (%)

39 (6.4)

33 (5.7)

0.23

  

Major, n (%)

4 (0.7)

4 (0.7)

0.94

  

Intermediate, n (%)

20 (3.3)

18 (3.1)

0.88

  

Minor, n (%)

15 (2.5)

11 (1.9)

0.52

 

T- wave items

Any, n (%)

98 (16.0)

100 (17.4)

0.53

  

Major, n (%)

2 (0.4)

1 (0.2)

1.00

  

Intermediate, n (%)

44 (7.9)

45 (8.7)

0.64

  

Minor, n (%)

52 (9.2)

54 (9.4)

0.56

 

Bundle branch block

LBBBa, n (%)

10 (1.9)

11 (2.3)

0.68

Whitehall criteria

 

Ischemic heart disease

Any, n (%)

140 (22.9)

142 (24.7)

0.47

  

Probableb, n (%)

27 (5.4)

35 (6.1)

0.19

  

Possiblec, n (%)

113 (19.3)

107 (18.6)

0.85

  1. aLeft bundle branch block. bIncluding Major Q/QS and LBBB. cIncluding Minor Q/QS, any ST-segment depression and any T-wave item
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