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Table 3 Correlation analysis of right heart size and clinical parameters

From: Right heart size and function significantly correlate in patients with pulmonary arterial hypertension – a cross-sectional study

 

Right atrial area

Right ventricular area

n

pearson’s R

p-value

 

n

pearson’s R

p-value

 

Univariate analysis

 Age

54

0.193

0.162

 

54

- 0.048

0.209

 

 Body mass index

54

0.181

0.190

 

54

0.733

0.129

 

 6-min walking distance

53

- 0.108

0.441

 

53

- 0.121

0.387

 

 NT-proBNP

53

0.539

< 0.001

*

53

0.538

< 0.001

*

Echocardiography

 Systolic pulmonary arterial pressure

54

0.307

0.024

*

54

0.567

< 0.001

*

 Right atrial area

 

  

54

0.703

< 0.001

*

 Right ventricular area

54

0.703

< 0.001

*

 

  

 Tricuspid annular plane systolic excursion

54

- 0.128

0.356

 

54

- 0.082

0.554

 

Cardiopulmonary exercise testing

 Peak oxygen consumption (V’O2)

54

0.042

0.736

 

54

0.051

0.713

 

 Peak oxygen consumption/kg (V’O2/kg)

54

- 0.199

0.149

 

54

- 0.227

0.099

 

Right heart catheter

rest

 Mean pulmonary arterial pressure

54

0.176

0.202

 

54

0.544

< 0.001

*

 Cardiac Output

54

- 0.028

0.839

 

54

- 0.052

0.709

 

 Cardiac Index

54

- 0.209

0.129

 

54

- 0.281

0.040

*

 Pulmonary arterial wedge pressure

54

0.025

0.857

 

54

- 0.101

0.467

 

 Pulmonary vascular resistance

54

0.175

0.206

 

54

0.508

< 0.001

*

 Stroke volume index

54

−0.244

0.076

 

54

−0.301

0.027

*

exercise

 Mean pulmonary arterial pressure

54

0.097

0.486

 

54

0.419

0.002

*

 Cardiac Output

54

- 0.177

0.200

 

54

- 0.223

0.104

 

 Cardiac Index

54

- 0.344

0.011

*

54

- 0.427

0.001

*

 ∆ CI peak

54

- 0.313

0.021

*

54

- 0.376

0.005

*

 Stroke volume index

54

−0.264

0.054

 

54

−0.407

0.002

*

Lung function / Diffusing capacity

 DLCOc SB

48

- 0.052

0.723

 

48

- 0.003

0.982

 

 DLCOc /VA

48

0.176

0.231

 

48

0.137

0.352

 
  1. CI = Cardiac Index, NT-proBNP = N-terminal pro brain natriuretic peptide, DLCOc SB = diffusion capacity transfer factor, DLCOc /VA = diffusion capacity transfer coefficient
  2. * = significant at level 0.05