Potential of right to left ventricular volume ratio measured on chest CT for the prediction of pulmonary hypertension: correlation with pulmonary arterial systolic pressure estimated by echocardiography.
Eur Radiol
; 22(9): 1929-36, 2012 Sep.
Article
em En
| MEDLINE
| ID: mdl-22538630
ABSTRACT
OBJECTIVES:
To investigate the correlation of right ventricular (RV) to left ventricular (LV) volume ratio measured by chest CT with pulmonary arterial systolic pressure (PASP) estimated by echocardiography.METHODS:
104 patients (72.47 ± 13.64 years; 39 male) who had undergone chest CT and echocardiography were divided into two groups (hypertensive and normotensive) based upon an echocardiography-derived PASP of 25 mmHg. RV to LV volume ratios (RV(V)/LV(V)) were calculated. RV(V)/LV(V) was then correlated with PASP using regression analysis. The Area Under the Curve (AUC) for predicting pulmonary hypertension on chest CT was calculated.RESULTS:
In the hypertensive group, the mean PASP was 46.29 ± 14.42 mmHg (29-98 mmHg) and there was strong correlation between the RV(V)/LV(V) and PASP (R = 0.82, p < 0.001). The intraobserver and interobserver correlation coefficients for RV(V)/LV(V) were 0.990 and 0.892. RV(V)/LV(V) was 1.01 ± 0.44 (0.51-2.77) in the hypertensive and 0.72 ± 0.14 (0.52-1.11) in the normotensive group (P <0.05). With 0.9 as the cutoff for RV(V)/LV(V), sensitivity and specificity for predicting pulmonary hypertension over 40 mmHg were 79.5 % and 90 %, respectively. The AUC for predicting pulmonary hypertension was 0.87CONCLUSION:
RV/LV volume ratios on chest CT correlate well with PASP estimated by echocardiography and can be used to predict pulmonary hypertension over 40 mmHg with high sensitivity and specificity.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Artéria Pulmonar
/
Volume Sistólico
/
Ecocardiografia
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Tomografia Computadorizada por Raios X
/
Hipertensão Pulmonar
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
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Aged
/
Aged80
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Female
/
Humans
/
Middle aged
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article