Table 3 ECG findings in pilot and non-pilot aircrew applicants from the initial examination (ordered by the need for further investigation). The total number of findings exceeds the number of applicants, because one applicant may be affected by more than one finding. Percentages are calculated in relation to the number of applicants. AV = atrioventricular; RBBB = right bundle branch block; HR = heart rate; bpm = beats per minute; ECG = electrocardiogram; n = number. * = pilot applicants routinely undergo transthoracic echocardiography. None of these revealed left ventricular hypertrophy

Complete RBBB

–

–

1

0.05

Yes

Diffuse ST / T segment changes

1

0.02

–

–

Yes

Sinus bradycardia (HR <  40 bpm)

7

0.10

3

0.15

Yes

ST segment and T wave abnormalities II, III, aVF

3

0.05

–

–

Yes

Suspected delta wave

–

–

1

0.05

Yes

Ventricular pre-excitation (delta wave)

1

0.02

–

–

Yes

1 premature atrial or ventricular complex

117

1.86

18

0.90

No

1st degree AV Block (PR < 300 ms)

2

0.03

–

–

No

Benign early repolarization

3

0.05

–

–

No

Discrete ST / T segment changes¹

2491

39.64

303

15.22

No

Ectopic atrial rhythm

2

0.03

–

–

No

Incomplete RBBB

10

0.16

1

0.05

No

Intermittent junctional rhythm

1

0.02

–

–

No

Left anterior fascicular block (age <  40 years)

2

0.03

1

0.05

No

Negative T wave in III

5

0.08

4

0.20

No

QRS voltage criteria for left ventricular hypertrophy*

9

0.14

2

0.10

No

Sinus bradycardia (HR ≥ 40 and < 60 bpm)

1551

24.68

492

24.71

No

Sinus tachycardia (HR > 100 bpm, not persistent at rest during physical examination)

123

1.96

31

1.56

No

Slightly broadened QRS complexes (133 ms)

1

0.02

–

–

No

Normal ECG

1959

31.17

1136

57.06

No

Total number of applicants

6284

100

1991

100