Optical coherence tomography confirmed spontaneous coronary artery dissection in 11 of 17 suspected cases, identifying features like intramural hematomas that were mostly angiographically silent.
Observational (n=17)
Does optical coherence tomography improve the diagnosis and characterization of spontaneous coronary artery dissection in patients with suspected SCAD?
OCT provides detailed morphological insights that allow for accurate diagnosis and management of SCAD, detecting features often missed by standard angiography.
OBJECTIVES: This study sought to assess the diagnostic value of optical coherence tomography (OCT) in patients with suspected spontaneous coronary artery dissection (SCAD). BACKGROUND: SCAD is a rare but challenging clinical entity. METHODS: Following a prospective protocol, OCT was performed in 17 consecutive patients with a clinical and angiographic suspicion of SCD from a total of 5,002 patients undergoing coronary angiography. A conservative management strategy was followed. RESULTS: OCT ruled out the diagnosis of SCAD in 6 patients with coronary artery disease (atherosclerotic plaques and/or intracoronary thrombus). In 11 patients (age 48 ± 9 years, 9 female), OCT confirmed the presence of SCAD. A double-lumen or intramural hematoma image was visualized in all cases. However, only 3 patients presented an intimal "flap" on angiography. OCT readily identified the intimal rupture site (n = 7), the thickness (348 ± 84 μm) and length (31 ± 9 mm) of the intimomedial membrane, the area of the true (1.1 ± 0.5 mm(2)) and false lumen (5.9 ± 2.1 mm(2)), the associated intramural hematoma (n = 9), and thrombi in the true or false lumens (n = 11). Most of these findings were angiographically silent. After stenting (n = 4), OCT disclosed adequate stent coverage, expansion, and apposition, but also residual intramural hematoma at the stented site (abluminal) and at the distal vessel. CONCLUSIONS: OCT provides unique insights in patients with SCAD that allow an early diagnosis and adequate management. Most of these findings are undetectable by angiography.
Alfonso et al. (2012) conducted an observational in Suspected spontaneous coronary artery dissection (SCAD) (n=17). Optical coherence tomography (OCT) vs. Angiography was evaluated on Confirmation or exclusion of SCAD diagnosis. Optical coherence tomography confirmed spontaneous coronary artery dissection in 11 of 17 suspected cases, identifying features like intramural hematomas that were mostly angiographically silent.