Table 3 Evaluation of selected parameters in control group and in dyspnea group during exercise

From: Biomarkers and Echocardiographic Predictors of Myocardial Dysfunction in Patients with Hypertension

 

Mean ± standard deviation (SD)

p

Parameter

Control Group (n = 22)

Dyspnea Group (n = 27)

Control vs Dyspnea

Efficiency in MET

8.2 ± 1

7.1 ± 1

ns

Systolic BP mmHg Ex

160 ± 18

165 ± 19

ns

Diastolic BP mmHg Ex

85 ± 10

87 ± 12

ns

HR Ex

91 ± 5

93 ± 6

ns

peak E Ex (cm/s)

85.5 ± 21

88.7 ± 19

ns

peak A Ex (cm/s)

74.9 ± 25

73.5 ± 18

ns

E/A ratio Ex

1.2 ± 0.5

1.2 ± 0.4

ns

DT Ex (ms)

239.3 ± 78

260 ± 70

ns

E' Ex (cm/s)

14.9 ± 3

12.8 ± 1

0.020

Δ E'

4.4 ± 3.76

2.2 ± 2.41

0.004

A' Ex (cm/s)

12.0 ± 4

10.7 ± 3

ns

Δ A'

1.2 ± 3.41

−0.6 ± 2.46

0.040

E/E' ratio Ex

5.1 ± 1

6.7 ± 1

0.034

S' Ex (cm/s)

10.9 ± 2

9.3 ± 2

0.017

  1. ABBREVIATIONS: MET, metabolic equivalent defined as the amount of oxygen consumed while sitting at rest and is equal to 3.5 ml O2 per kg body weight x min; Ex, on exercise; BP, blood pressure; HR, heart rate E', early diastolic annular velocity; Δ E' = E' Ex - E' rest; A', late diastolic annular velocity; Δ A' = A' Ex - A' rest; E/E', ratio of early mitral diastolic inflow velocity to early diastolic mitral annular velocity; S', systolic mitral annular velocity; Ex, on exercise.
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