Key result
The 'pull-back technique' with continuous contrast injection through a distal microcatheter successfully restored distal flow and resolved the lesion in a young man with occlusive SCAD.
Why the study?
Although conservative management is preferable in SCAD, invasive treatment may be required for complete arterial occlusion to restore distal vessel flow.
Does the 'pull-back injection technique' restore distal flow in a patient with occlusive spontaneous coronary artery dissection?
Case Report (n=1)
Does the 'pull-back injection technique' restore distal flow in a patient with occlusive spontaneous coronary artery dissection?
The 'pull-back injection technique' using a microcatheter and continuous contrast injection may be an effective stent-sparing strategy to restore distal flow in patients with occlusive spontaneous coronary artery dissection.
Answers are grounded in this paper and cite their sources.
Case of successful PCI in occluded SCAD supports individualized invasive strategy; leaves open optimal reconnection techniques pending prospective data.
BACKGROUND: Spontaneous coronary artery dissection (SCAD) is a rare condition that can cause acute coronary syndrome, typically in young patients without classical cardiovascular risk factors. Although in SCAD the conservative management is preferable, in cases with complete occlusion of the artery an invasive treatment may be required. In such cases, the goal of the percutaneous intervention should be to restore the connection between the true and false lumen recovering the distal flow of the vessel. CASE SUMMARY: A young man was admitted with acute chest pain and ST segment elevation in precordial v3-v6 leads. An emergent coronary angiogram showed an abrupt occlusion of middle left anterior descending artery compatible with SCAD. A microcatheter was advanced distally into the artery and pulled back with continuous contrast injection through the catheter, restoring the distal flow with a residual spiroid intimal flap and with relief of the chest discomfort. A computed tomography performed during admission showed complete resolution of the lesion. DISCUSSION: In SCAD with complete occlusion of the vessel, the 'pull-back technique' with continuous vigorous injection of contrast through a distal microcatheter may be effective to restore the distal flow enabling the healing of the artery at follow-up and avoiding the stent implant.
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Unzué et al. (2021) conducted a case report in Spontaneous coronary artery dissection (SCAD) (n=1). Pull-back injection technique was evaluated on Restoration of distal flow and resolution of the lesion. The 'pull-back technique' with continuous contrast injection through a distal microcatheter successfully restored distal flow and resolved the lesion in a young man with occlusive SCAD.
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