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Spontaneous echographic contrast in the inferior vena cava
American Heart Journal
|October 1, 1985
Summary
Spontaneous contrast in the inferior vena cava (IVC) is common in adults, detected via echocardiography. This finding, often seen in healthy individuals and heart patients, typically has minimal clinical significance.
Area of Science:
- Cardiology
- Diagnostic Imaging
Background:
- Spontaneous contrast in the inferior vena cava (IVC) is an echocardiographic finding.
- Its prevalence and clinical significance in adults are not well-established.
Purpose of the Study:
- To investigate the frequency of spontaneous IVC contrast in a patient cohort.
- To determine if spontaneous IVC contrast is associated with specific patient characteristics or cardiac conditions.
Main Methods:
- Two-dimensional echocardiography was used to examine the IVC in 106 consecutive patients.
- Patients with inadequate images were excluded, leaving a study population of 100.
- Contrast presence was categorized as definite, equivocal, or absent.
Main Results:
- Spontaneous IVC contrast was observed in 17 patients (10 definite, 7 equivocal).
- No significant differences were found regarding sex, age, diagnoses, or IVC dimensions among contrast groups.
- The finding was not linked to a specific heart disease category.
Conclusions:
- Spontaneous IVC contrast is a common echocardiographic finding in adults, including those with and without heart disease.
- While potentially linked to impaired right heart filling, it usually holds little clinical importance.
- Etiologic factors may include microbubbles or blood element aggregates; higher frequency imaging increases detection.