01.12.2021 | Research | Ausgabe 1/2021 Open Access

A multicentric quality-control study of exercise Doppler echocardiography of the right heart and the pulmonary circulation. The RIGHT Heart International NETwork (RIGHT-NET)
- Zeitschrift:
- Cardiovascular Ultrasound > Ausgabe 1/2021
Publisher’s Note
Background
Methods
Reading sessions
Variable
|
Value
Mean ± SD
|
---|---|
Age (years)
|
67.2 ± 11.3
|
Sex (male/female)
|
2/8
|
BSA (m
2)
|
1.7 ± 0.2
|
BMI (Kg/m
2)
|
25.2 ± 2.2
|
Systolic blood pressure (mmHg)
|
129 ± 24
|
Diastolic blood pressure (mmHg)
|
77 ± 12
|
Heart rate (bpm)
|
74 ± 11
|
Diagnosis
|
|
Healthy subjects
|
1
|
vPAH
|
1
|
CTD
|
1
|
CHD
|
1
|
Patients with CAD risk factors
|
2
|
LHD
|
2
|
Lung disease
|
1
|
Post-PE
|
1
|


Statistical analysis
Results
Centers
|
Accuracy (%)
|
ICC
|
95% Confidence Interval
|
|
---|---|---|---|---|
Lower bound
|
Upper bound
|
|||
Center 1
|
100
|
0.99
|
0.999
|
1.000
|
Center 2
|
99.9
|
0.99
|
0.991
|
0.997
|
Center 3
|
99.7
|
0.99
|
0.991
|
0.998
|
Center 4
|
99.8
|
0.99
|
0.992
|
0.998
|
Center 5
|
99.9
|
0.99
|
0.992
|
0.997
|
Center 6
|
99.7
|
0.99
|
0.993
|
0.998
|
Center 7
|
99.9
|
0.99
|
0.987
|
0.995
|
Center 8
|
99.6
|
0.99
|
0.988
|
0.996
|
Center 9
|
99.9
|
0.98
|
0.975
|
0.990
|
Center 10
|
99.7
|
0.98
|
0.975
|
0.996
|
Center 11
|
99.9
|
0.99
|
0.988
|
0.995
|
Center 12
|
99.7
|
0.99
|
0.990
|
0.997
|
Center 13
|
100
|
0.99
|
0.994
|
0.998
|
Center 14
|
100
|
0.99
|
0.999
|
1.000
|
Center 15
|
99.8
|
0.99
|
0.993
|
0.998
|
Center 16
|
100
|
0.99
|
0.999
|
1.000
|
Center 17
|
100
|
0.99
|
0.999
|
1.000
|
Center 18
|
100
|
0.99
|
0.999
|
1.000
|
Center 19
|
99.9
|
0.96
|
0.935
|
0.973
|
Centers
|
Rest
|
Peak
|
||||||
---|---|---|---|---|---|---|---|---|
Accuracy (%)
|
ICC
|
95% Confidence Interval
|
Accuracy (%)
|
ICC
|
95% Confidence Interval
|
|||
Lower bound
|
Upper bound
|
Lower bound
|
Upper bound
|
|||||
Center 1
|
100
|
0.99
|
0.999
|
1.000
|
100
|
0.99
|
0.999
|
1.000
|
Center 2
|
99.8
|
0.99
|
0.978
|
0.993
|
99.8
|
0.99
|
0.990
|
0.999
|
Center 3
|
99.4
|
0.99
|
0.982
|
0.997
|
99.9
|
0.99
|
0.994
|
0.999
|
Center 4
|
99.8
|
0.99
|
0.983
|
0.997
|
99.9
|
0.99
|
0.993
|
0.999
|
Center 5
|
99.7
|
0.99
|
0.984
|
0.995
|
99.9
|
0.99
|
0.994
|
0.999
|
Center 6
|
99.8
|
0.99
|
0.994
|
0.999
|
99.9
|
0.99
|
0.993
|
0.999
|
Center 7
|
99.9
|
0.99
|
0.991
|
0.997
|
99.9
|
0.99
|
0.993
|
0.999
|
Center 8
|
99.6
|
0.99
|
0.981
|
0.995
|
100
|
0.99
|
0.998
|
0.999
|
Center 9
|
99.8
|
0.98
|
0.972
|
0.991
|
100
|
0.99
|
0.979
|
0.996
|
Center 10
|
99.6
|
0.98
|
0.973
|
0.986
|
99.8
|
0.99
|
0.978
|
0.996
|
Center 11
|
99.9
|
0.99
|
0.990
|
0.997
|
100
|
0.99
|
0.975
|
0.996
|
Center 12
|
99.6
|
0.99
|
0.982
|
0.997
|
99.9
|
0.99
|
0.990
|
0.998
|
Center 13
|
100
|
0.99
|
0.995
|
0.999
|
100
|
0.99
|
0.996
|
0.999
|
Center 14
|
99.9
|
0.99
|
0.998
|
0.999
|
100
|
0.99
|
0.998
|
0.999
|
Center 15
|
99.8
|
0.99
|
0.990
|
0.997
|
99.9
|
0.99
|
0.991
|
0.999
|
Center 16
|
100
|
0.99
|
0.999
|
1.000
|
99.9
|
0.99
|
0.998
|
0.999
|
Center 17
|
99.9
|
0.99
|
0.998
|
0.999
|
100
|
0.99
|
0.998
|
0.999
|
Center 18
|
100
|
0.99
|
0.999
|
1.000
|
100
|
0.99
|
0.998
|
0.999
|
Center 19
|
99.9
|
0.99
|
0.975
|
0.992
|
100
|
0.99
|
0.992
|
0.999
|
TRV (cm/s)
|
RVOT Act
(msec)
|
TAPSE
(mm)
|
RV S′
(cm/s)
|
RV FAC
(%)
|
LVOT VTI
(cm)
|
E
(cm/s)
|
e’
(cm/s)
|
LV EF (%)
MOD
|
|
---|---|---|---|---|---|---|---|---|---|
Rest
|
|||||||||
Mean
|
282 ± 22
|
128 ± 28
|
20.2 ± 2.2
|
12.2 ± 0.5
|
58 ± 8
|
20.5 ± 1.8
|
59.7 ± 5.3
|
12.0 ± 1.1
|
50 ± 4.6
|
Mean absolute difference
|
10.6 ± 10.8
|
13 ± 14
|
1.1 ± 1.2
|
0.4 ± 0.5
|
9.5 ± 7
|
1.6 ± 1.7
|
3.5 ± 4.2
|
0.7 ± 0.9
|
3.9 ± 3
|
Mean relative difference, %
|
3.8 ± 4
|
9.7 ± 9
|
5.3 ± 5.5
|
2.9 ± 3.9
|
15 ± 10
|
7.4 ± 7
|
5.7 ± 6.6
|
6.0 ± 6.9
|
7.6 ± 5.8
|
ICC
|
0.97
|
0.95
|
0.97
|
0.95
|
0.82
|
0.98
|
0.99
|
0.97
|
0.97
|
95% Confidence interval
|
0.92–0.99
|
0.93–0.99
|
0.92–0.99
|
0.88–0.98
|
0.75–0.91
|
0.95–0.99
|
0.97–0.99
|
0.93–0.99
|
0.93–0.99
|
Peak exercise
|
|||||||||
Mean
|
322 ± 16
|
92 ± 16
|
24.2 ± 4.3
|
20.9 ± 1
|
59 ± 11
|
22.0 ± 2.8
|
82 ± 6.4
|
21 ± 1,6
|
57 ± 7
|
Mean absolute difference
|
7.7 ± 7.4
|
11 ± 11
|
1.5 ± 3
|
0.6 ± 0.8
|
9.2 ± 7.7
|
2.2 ± 2.4
|
7.3 ± 6.4
|
1.4 ± 1.2
|
5 ± 4
|
Mean relative difference, %
|
2.4 ± 2.3
|
12 ± 13
|
8 ± 14
|
2.9 ± 3.4
|
16 ± 14
|
9.6 ± 10
|
8.3 ± 7.0
|
6.5 ± 5.1
|
9 ± 7
|
ICC
|
0.98
|
0.92
|
0.95
|
0.95
|
0.80
|
0.97
|
0.98
|
0.97
|
0.96
|
95% Confidence interval
|
0.95–0.99
|
0.89–0.99
|
0.90–0.99
|
0.80–0.98
|
0.74–0.90
|
0.92–0.99
|
0.95–0.99
|
0.93–0.99
|
0.92–0.99
|