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Figure legends
Figure 1. Stroke volume index and E/e’ plot at baseline and during LPP stress for
each age group and patients with HFpEF.
Each plot represents the mean values. The arrows indicate the changes in these
parameters from those obtained under resting conditions to those obtained during leg-
positive pressure (LPP) stress.
LPP = leg-positive pressure, HFpEF = heart failure with preserved ejection fraction, SVi
= stroke volume index.
10
Figure 2. Representative cases of each age-group and a patient with HFpEF.
11
For a healthy young subject (upper left), the stroke volume index (SVi) increased in
12
response to leg-positive pressure (LPP) stress, while the E/e’ ratio remained unchanged.
13
For middle-aged and elderly subjects (upper right and lower left), SVi increased during
14
LPP stress at the expense of the increase in E/e’. For a patient with HFpEF, SVi failed to
15
increase during LPP stress. The E/e’ ratio dramatically increased in response to LPP
16
stress.
17
LPP = leg-positive pressure, LVOT = left ventricular outflow, TMF = transmitral flow,
18
TDI = tissue Doppler imaging, SVi = stroke volume index, HFpEF = heart failure with
29
preserved ejection fraction.
Figure 3. Schematic presentation of the hemodynamic responses on the Guyton
diagram for each subgroup during acute preload-increasing maneuver.
The difference in hemodynamic responses to the increased preload according to age
groupss and HFpEF are schematically presented in the Guyton diagram.
LPP = leg-positive pressure, LV = left ventricular, HFpEF = heart failure with preserved
ejection fraction.
Table 1. Clinical characteristics of patients with HFpEF
Age, y
76 ± 13
Gender, M/F
10/15
BMI
23 ± 4
H2FPEF score
2.6 ± 1.6
Comorbidities, n (%)
Hypertension
14 (56)
Diabetes mellitus
9 (36)
Dyslipidemia
12 (48)
COPD
5 (20)
Cardiac rhythm
Sinus rhythm, n (%)
Atrial fibrillation, n (%)
23 (92)
2 (8)
NYHA functional class, n (%)
II
19 (76)
III
6 (24)
IV
0 (0)
Medications, n (%)
Loop diuretics
14 (56)
Beta-blockers
14 (56)
Spironolactone
6 (24)
ACE-I/ARBs
14 (56)
Hemoglobin, g/dL
12.1 ± 2.1
B-type natriuretic peptide, pg/mL
eGFR, mL/min/1.73m2
158 (105-262)
55.2 ± 20.6
Data are presented as n, mean ± SD, n (%), or median (interquartile range).
HFpEF, heart failure with preserved ejection fraction; COPD, chronic obstructive lung
disease; NYHA, New York Heart Association; ARB, angiotensin II receptor blocker;
ACE-I, angiotensin converting enzyme-inhibitor; eGFR, estimated glomerular filtration
rate.
Table 2. Baseline characteristics for patients with HFpEF and normal controls from 3 age -groups
Variables
Age, y
Gender, M/F
Young
(N=27)
Middle-age
(N=25)
Elderly
(N=25)
HFpEF
(N=25)
ANOVA
P value
23 ± 4
13/14
52 ± 6*
6/19
77 ± 6*†
12/13
76 ± 13*†
10/15
<0.001
0.14
42 ± 12*
16 ± 5
40 ± 6
69 ± 18
1.7 ± 0.5
0.42 ± 0.09*
63 ± 4
1.1 ± 0.3*
27 ± 5
10 ± 2*
8±2
43 ± 7*
24 ± 4
39 ± 9*
14 ± 4*
37 ± 8
81 ± 21
2.2 ± 0.7*†
0.55 ± 0.10*†
63 ± 5
0.8 ± 0.2*†
31 ± 8*†
6 ± 2*†
10 ± 2*†
47 ± 10*
23 ± 5
43 ± 14*
17 ± 8
43 ± 13
110 ± 31*†‡
2.7 ± 0.9*†‡
0.58 ± 0.18*†
61 ± 7
1.3 ± 0.5*‡
51 ± 18*†
6 ± 2*†
15 ± 5*†‡
48 ± 11*
22 ± 5
<0.001
<0.05
0.11
<0.001
<0.001
<0.001
0.07
<0.001
<0.001
<0.001
<0.001
<0.01
0.18
Echocardiographic characteristics
LV volume index, mL/m2
End-diastole
53 ± 10
End-systole
19 ± 4
LVOT-SVi, mL/m
38 ± 7
LV mass index, g/m
69 ± 17
Mass to volume ratio, g/mL
1.3 ± 0.4
Relative wall thickness
0.33 ± 0.06
LVEF, %
64 ± 3
E/A ratio
2.2 ± 0.7
LAVI, mL/m
19 ± 7
e’ velocity, cm/sec
15 ± 2
E/e’ ratio
6±2
RVFAC, %
34 ± 10
TAPSE, mm
22 ± 4
Data are presented as n, mean ± SD, n (%).
HFpEF, heart failure with preserved ejection fraction; SVi, stroke volume index; LV, left ventricular;
LVOT, left ventricular outflow tract; LA, left atrial; LAVI, left atrial volume index; RVFAC, right
ventricular fractional area change; TAPSE, tricuspid annular plane systolic excursion.
* P<0.05 vs. young group, † P<0.05 vs. middle-aged group, ‡ P<0.05 vs elderly group
Table. 3 Changes in hemodynamic and echocardiographic parameters during leg-positive pressure stress for patients with HFpEF and normal controls
from 3 age -groups
Young (N=27)
Hemodynamics
Systolic BP, mmHg
Diastolic BP, mmHg
HR, bpm
SVi, mL/m2
Middle-aged (N=25)
Elderly (N=25)
HFpEF (N=25)
Baseline
LPP
Baseline
LPP
Baseline
LPP
Baseline
LPP
119 ± 16
69 ± 11
69 ± 11
38 ± 7
107 ± 14*
61 ± 11*
67 ± 10
42 ± 8*
115 ± 17
69 ± 10
70 ± 11
40 ± 6
112 ± 16
69 ± 11
66 ± 10*
44 ± 6*
134 ± 22
76 ± 15
74 ± 15
37 ± 8
125 ± 21*
74 ± 10
69 ± 13*
42 ± 8*
129 ± 25
68 ± 13
71 ± 11
43 ± 13
124 ± 23*
70 ± 18
67 ± 12
44 ± 14
55 ± 9
20 ± 4*
64 ± 4
42 ± 12
16 ± 5
63 ± 4
49 ± 15*
16 ± 6
68 ± 5*
39 ± 9
14 ± 4
63 ± 5
43 ± 7*
15 ± 3
66 ± 4*
43 ± 14
17 ± 8
61 ± 7
47 ± 13*
18 ± 9
63 ± 6
86 ± 14*
39 ± 10
2.3 ± 0.7
21 ± 7*
15 ± 2*
6±1
18 ± 4
37 ± 10
23 ± 5*
16 ± 4
72 ± 18
65 ± 13
1.1 ± 0.3
27 ± 5
10 ± 2
8±2
15 ± 4
43 ± 7
24 ± 4
13 ± 4
75 ± 14
69 ± 14
1.1 ± 0.3
30 ± 6*
9±2
9 ± 3*
15 ± 5
54 ± 6*
25 ± 4*
13 ± 3
61 ± 13
83 ± 17
0.8 ± 0.2
31 ± 8
6±2
10 ± 2
20 ± 7
47 ± 10
23 ± 5
13 ± 4
67 ± 13*
83 ± 15
0.8 ± 0.2*
35 ± 11*
6 ± 1*
12 ± 3*
19 ± 6
54 ± 12*
26 ± 4*
14 ± 4*
84 ± 21
72 ± 26
1.3 ± 0.5
51 ± 18
6 ± 12
15 ± 5
23 ± 6
48 ± 11
22 ± 5
14 ± 5
90 ± 23*
73 ± 27
1.4 ± 0.7*
53 ± 18
6±2
17 ± 7*
24 ± 9
48 ± 9
21 ± 6
15 ± 5
Echocardiographic indices
LV volume index, mL/m2
End-diastole
53 ± 10
End-systole
19 ± 4
LVEF, %
64 ± 3
Transmitral flow parameters
E velocity, cm/sec
81 ± 16
A velocity, cm/sec
39 ± 10
E/A ratio
2.2 ± 0.7
LAVI, mL/m
19 ± 7
e’ velocity, cm/sec
15 ± 2
E/e’ ratio
6±2
TR-PG, mmHg
16 ± 5
RVFAC, %
34 ± 10
TAPSE, mm
22 ± 4
IVC diameter, mm
16 ± 4
Data are presented as mean ± SD.
LPP, leg-positive pressure; BP, blood pressure; HR, heart rate; TR, tricuspid regurgitation; PG, pressure gradient; IVC, inferior vena cava. All other
abbreviations as in Table 1 and 2. *P<0.05 vs. baseline.
Table 4. Univariate and multivariate logistic regression analysis to identify HFpEF
Univariate analysis
OR
95% CI
P value
Clinical variables
Age (per 5 years increase)
Gender (female)
H2FpEF score
1.076
0.957
2.968
1.037-1.160
0.381-2.407
1.828-4.817
<0.001
0.93
<0.001
Baseline echocardiographic variables
SVi (per 5 mL/m2 increase)
LVEDVI (per 5 mL/m2 increase)
LV mass index (per 10 g/m2 increase)
RWT (per 0.05 unit increase)
LVEF (per 5% increase)
LAVI (per 5 mL/m2 increase)
E/e’ (per 5 unit increase)
TAPSE (per 5 mm increase)
1.059
0.986
1.063
1.069
0.880
1.251
1.473
0.941
1.007-1.113
0.949-1.024
1.036-1.109
1.032-1.108
0.793-0.976
1.134-1.379
1.240-1.750
0.846-1.045
0.03
0.47
<0.001
<0.001
0.02
<0.001
<0.001
0.26
Variables during LPP stress
Δ SVi (per 5 mL/m2 increase)
Δ E/e’ (per 5 unit increase)
0.754
1.234
0.644-0.883
1.038-1.468
<0.001
0.02
Variables
Multivariate analysis
OR
95% CI
P value
1.051
1.016-1.087
<0.01
1.480
1.181-1.855
<0.001
0.780
0.646-0.941
<0.01
OR, odds ratio; CI, confidence interval. All other abbreviations as in Table 1, 2 and 3.
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