Related Experiment Video
Updated: Feb 14, 2026
Stereotactically-guided Ablation of the Rat Auditory Cortex, and Localization of the Lesion in the Brain
Published on: October 11, 2017
Rotational atherectomy ablation for an unexpandable stent under the guide of IVUS: A case report
Daoyuan Si1, Guohui Liu, Yaliang Tong
1Department of Cardiology, China-Japan Union Hospital of Jilin University, Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis of Cardiovascular Disease, Jilin Provincial Cardiovascular Research Institute, Changchun, Jilin, China.
Rationale:
Inadequate stent expansion due to rigid calcified may result in restenosis lesions, but the available options are limited.
Patient Concerns:
We report a case via the trans-radial approach of the severely underexpanded freshly deployed stent due to heavily calcified plaques DIAGNOSES:: Coronary angiography revealed that there was no adequate expansion of the freshly deployed stent.
Interventions:
Under the guide of intravascular ultrasound (IVUS), rotational atherectomy (RA) successfully ablated the stent layers and the protruding calcified plaque. Followed by balloon angioplasty, the ablated segment was scaffolded with another stent, well expanded and documented by IVUS.
Outcomes:
The patient was uneventful during the procedure and remained angina free at the point of one year of clinical follow-up.
Lessons:
This case indicated that RA via the trans-radial approach could be a useful remedy in the situation of under-expansion of implanted stents, and the debulking should be performed under IVUS-guidance.
Related Concept Videos
01:24Data Reporting and Recording
01:30Kinematic Equations for Rotation
For instance, imagine a point A on a rigid body engaged in circular motion. The translational velocity of this particular point can be calculated by taking the time derivatives of the displacement equation, which essentially measures the...
01:11Rotation of Asymmetric Top
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
01:25Types of Reports I: Hands-off Report
Following are the key components and categories of hand-off reports:
Purpose and Process:
01:21Types of Reports II: Incident or Occurrence Report
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...
01:37Rotation with Constant Angular Acceleration - I
Using our intuition, we can begin to see how rotational quantities such as angular displacement, angular velocity, angular acceleration, and time are related to one another. For example, if a flywheel...