Generally, lesions most accessible to atherectomy are those in the proximal or mid-portion of coronary vessels. Contraindications Patients with left main coronary artery disease where an interrupted blood flow would pose undue patient risk. Patients with calcified aorto-ostial lesions. Patients who are not suitable candidates for CABG surgery. Patients with totally obstructed coronary arteries where a guidewire cannot be advanced through the occlusion.
Single patient is defined as one complete procedure on one patient.
Failure to do so may result in balloon repture due to overpressurization and, if so, will consequently injure the vessel. A cardiac surgery team should be on alert while atherectomy is being performed. Appropriate anticoagulant and coronary vasodilator therapy must be used during this procedure. Never use air or any gaseous medium to inflate the balloon when it is inside the patient. Use of higher concentrations of contrast medium will result in prolonged balloon inflation and deflation times, and prolonged interruption of blood flow.