Study design and study population: It was a prospective, single arm, open label study that included 99 cases admitted to the catheterization laboratory in Wadi El-Neel hospital between September 2012 and September 2014 and diagnosed as having ischemic heart disease with significant coronary artery stenosis necessitating PCI. We included full history, clinical evaluation, Standard 12-leads surface ECG, Echocardiography, ischemia driven non-invasive testing for controversy patients with chest pain. The inclusion criteria included stable coronary artery disease, age ≥ 18 and ≤ 65 years, and de novo coronary lesions (excluding left main stem and arterial or saphenous vein grafts). Main exclusion criteria included acute coronary syndrome, the …show more content…
The polymeric nature of the scaffold carries physical limitations that should be taken into account before deployment. Due to strict dilatation limits, overexpansion can lead to strut fracture or disruption of the scaffold inside the vessel. Careful vessel sizing before BVS implantation is crucial for procedural success. Generally, the BVS should not be implanted into lesions that cannot be adequately prepared with balloon inflations, particularly when the pre-dilatation balloon cannot be fully expanded or when the result of preparation is unsatisfactory. The deployment should proceed gradually, with pressure increment by 2 atm every 5 sec till complete expansion of the scaffold, and then target pressure should be maintained for at least 30 sec. Post-dilatation with larger balloons is possible, as long as overexpansion does not exceed 0.5 mm, as compared with the scaffold nominal diameter. Ultimately, one should aim to obtain < 10% residual stenosis, full scaffold expansion and optimal strut apposition. 3.3. Study