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Valor do estudo radiológico do tórax no diagnóstico de disfunçäo ventricular esquerda na doença de Chagas / Value of the radiological study of the thorax for diagnosing left ventricular dysfunction in Chagas' disease
Perez, Amanda Arantes; Ribeiro, Antonio Luiz Pinho; Barros, Márcio Vinícius Lins; Sousa, Marcos Roberto de; Bittencourt, Roberto José; Machado, Fernando Santana; Rocha, Manoel Otávio Costa.
Affiliation
  • Perez, Amanda Arantes; s.af
  • Ribeiro, Antonio Luiz Pinho; s.af
  • Barros, Márcio Vinícius Lins; s.af
  • Sousa, Marcos Roberto de; s.af
  • Bittencourt, Roberto José; s.af
  • Machado, Fernando Santana; s.af
  • Rocha, Manoel Otávio Costa; s.af
Arq. bras. cardiol ; 80(2): 202-213, Feb. 2003. ilus, tab, graf
Article in Portuguese, English | LILACS | ID: lil-329099
Responsible library: BR1.1
RESUMO

OBJECTIVE:

To determine the value of the radiological study of the thorax for diagnosing left ventricular dilation and left ventricular systolic dysfunction in patients with Chagas' disease.

METHODS:

A cross-sectional study of 166 consecutive patients with Chagas' disease and no other associated diseases. The patients underwent cardiac assessment with chest radiography and Doppler echocardiography. Sensitivity, specificity, and positive and negative predictive values of chest radiography were calculated to detect left ventricular dysfunction and the accuracy of the cardiothoracic ratio in the diagnosis of left ventricular dysfunction with the area below the ROC curve. The cardiothoracic ratio was correlated with the left ventricular ejection fraction and the left ventricular diastolic diameter.

RESULTS:

The abnormal chest radiogram had a sensitivity of 50 percent, specificity of 80.5 percent, and positive and negative predictive values of 51.2 percent and 79.8 percent, respectively, in the diagnosis of left ventricular dysfunction. The cardiothoracic ratio showed a weak correlation with left ventricular ejection fraction (r=-0.23) and left ventricular diastolic diameter (r=0.30). The area calculated under the ROC curve was 0.734.

CONCLUSION:

The radiological study of the thorax is not an accurate indicator of left ventricular dysfunction; its use as a screening method to initially approach the patient with Chagas' disease should be reevaluated
Subject(s)
Full text: Available Collection: International databases Health context: SDG3 - Health and Well-Being / Neglected Diseases Health problem: Target 3.3: End transmission of communicable diseases / Chagas Disease / Neglected Diseases Database: LILACS Main subject: Radiography, Thoracic / Chagas Disease / Ventricular Dysfunction, Left Type of study: Diagnostic study / Observational study / Prevalence study / Prognostic study / Risk factors Aspects: Patient-preference Limits: Adult / Female / Humans / Male Language: English / Portuguese Journal: Arq. bras. cardiol Journal subject: Cardiology Year: 2003 Document type: Article
Full text: Available Collection: International databases Health context: SDG3 - Health and Well-Being / Neglected Diseases Health problem: Target 3.3: End transmission of communicable diseases / Chagas Disease / Neglected Diseases Database: LILACS Main subject: Radiography, Thoracic / Chagas Disease / Ventricular Dysfunction, Left Type of study: Diagnostic study / Observational study / Prevalence study / Prognostic study / Risk factors Aspects: Patient-preference Limits: Adult / Female / Humans / Male Language: English / Portuguese Journal: Arq. bras. cardiol Journal subject: Cardiology Year: 2003 Document type: Article
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