Intervention

N (%)

History/Physical Examination

42 (100%)

Assessment at Respiratory Department

· Referral to Respiratory Department

· Referral from Respiratory Department

18 (42.8%)

24 (57.2%)

Pulmonary Imaging

· Chest X-ray

· Chest Computerised Tomography (CT)

33 (78.6%)

24 (57.1%)

Laboratory Tests (full blood count/liver function tests/blood glucose/thyroid function tests/renal function tests)

42 (100%)

Electrocardiogram

42 (100%)

Echocardiogram

· Mean Ejection Fraction:

42 (100%)

62%

24-hour ambulatory ECG-recording

· Mean SDNN

· Mean Heart Rate

42 (100%)

74.4 ms (range: 52 - 112 ms)

92 beats/minute

Functional status assessment

· Exercise Stress Test

· 6-Minute Walk Test

19 (45.2%)

23 (54.8%)

Orthostatic Test

20 (47.6%)

Tilt Table Test

2 (4.8%)

Pharmaceutical Therapy

· b-blockers

· Ivabradine

· b-blockers/ivabradine combination

29 (69%)

16 (38.1%)

11 (26.2%)

2 (4.8%)

Response to treatment

Residual symptoms

24/29 patients (82.8%)

29/42 patients (69%)