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Table 3 Correlation between lifetime pack-years and echocardiographic parameters

From: Influence of cigarette smoking on biventricular systolic function independent of respiratory function: a cross-sectional study

Variable

Correlation coefficient

p value

Left ventricular ejection fraction (%)

− 0.248

0.001

Left ventricular end-diastolic diameter (mm)

0.182

0.013

Left ventricular end-systolic diameter (mm)

0.281

< 0.001

Left ventricular end-diastolic volume index (ml/m2)

0.108

0.15

Left ventricular end-systolic volume index (ml/m2)

0.255

< 0.001

Left ventricular mass index (g/m2)

0.063

0.39

Left atrial volume index (ml/m2)

− 0.116

0.12

A velocity (cm/s)

− 0.136

0.066

E/A

0.046

0.54

E/e′

− 0.062

0.41

Right ventricular end-diastolic area index (cm2/m2)

0.156

0.037

Right ventricular end-systolic area index (cm2/m2)

0.28

< 0.001

Right ventricular fractional area change (%)

− 0.173

0.021

Tricuspid valve annular diameter (mm)

0.273

< 0.001

e′t velocity (cm/s)

0.032

0.67

e′t/a′t

0.087

0.25

Inferior vena cava (mm)

0.109

0.14

  1. A, late diastolic transmitral inflow peak velocity; a′t, late diastolic peak velocity of the tricuspid annulus; E, early diastolic transmitral inflow peak velocity; e′, mitral early diastolic annular peak velocity; e′t, early diastolic peak velocity of the tricuspid annulus