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Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
[Diagnostic validity of coronary angiotomography]
Gil Rodríguez-Caravaca1, Pablo Robles-Velasco, Pilar Olmedilla-Arregui
1Unidad de Medicina Preventiva, Hospital Universitario Fundación Alcorcón, Madrid. grodriguez@fhalcorcon.es
Insights
Coronary angiotomography shows high diagnostic accuracy for detecting coronary arterial disease. This non-invasive test offers excellent sensitivity and specificity, making it a valuable tool for diagnosing coronary artery disease.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Medical Technology
Background:
- Coronary arterial disease is a leading cause of morbidity in Western countries.
- Coronary angiography is the primary diagnostic tool for coronary arteries.
- Coronary angiotomography offers a non-invasive alternative for studying coronary arteries.
Purpose of the Study:
- To assess the diagnostic accuracy of coronary angiotomography.
- To compare coronary angiotomography with invasive angiography.
- To evaluate the effectiveness of coronary angiotomography in diagnosing coronary arterial disease.
Main Methods:
- A cross-sectional study was conducted comparing coronary angiotomography to invasive angiography.
- 121 patients without prior coronary disease underwent both tests consecutively and blindly.
- Diagnostic validity indexes (sensitivity, specificity, PPV, NPV, global value) were calculated by patient, artery, and segment.
Main Results:
- Coronary angiotomography achieved 100% sensitivity and NPV when analyzed by patient.
- Overall specificity was 92% and global value was 94% for patient-level analysis.
- High validity was observed for the anterior descending artery (98% specificity) and distal right coronary artery (100% specificity).
Conclusions:
- Coronary angiotomography demonstrates high diagnostic validity for coronary arterial disease.
- This non-invasive imaging technique can be considered a reliable diagnostic test.
- Its accuracy supports its use as an alternative to traditional invasive methods.
Background:
Coronary arterial disease is the main cause of morbidity in western countries and coronary angiography is the most important diagnosis test. Lately, coronary angiotomography has been introduced for studying coronary arteries in a non-invasive way. Our goal was to assess the diagnostic accuracy of coronary angiotomography in the diagnosis of coronary arterial disease.
Material And Methods:
Cross-sectional study for assessing diagnostic test comparing coronary angiotomography to invasive angiography in patients without previous coronary disease. All the patients underwent both tests consecutively in a blind way. Coronary arteries were studied according to the modified reference model of coronary segmentary analysis of the American Heart Association. Tomography validity indexes (sensitivity, specificity, positive--PPV--and negative--NPV--predictive values and global value) by patient, artery, and segment were calculated.
Results:
We studied 121 patients (47 females--38.8%--and 74 males--61.2%-). Prevalence of coronary arterial disease was 38%. The most frequent risk factor detected was hypertension. We obtained a 100% sensitivity and NPV studying patients as a whole by patient, a specificity of 92% (95% CI: 86.0-99.0) and a global value of 94% (95% CI: 89.0-99.0). The higher validity by artery was for anterior descending artery with a specificity of 98% (CI95%: 90.0-96.0) and NPV of 97% (IC95%: 96.0-100). The segment with higher validity was distal right coronary artery with 100% specificity and PPV.
Conclusion:
A high diagnostic validity of coronary angiotomography was obtained and it could be considered as another diagnostic test for studying coronary arterial disease.
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