In general, contradictions for percutaneous transluminal angioplasty (PTA) are the contradictions for stenting. The list of such contradictions includes but is not limited by the following:
- High-calcium masses resistant to PTA.
- Acute or subacute thrombosis around plaques.
- Uncorrected bleeding disorders.
- Intracranial artery stenting.
- Black dot picture on the packaging grey indicator should be properly apparent. When the temperature indicator is black-colored completely, do not use stent, so as the stent diameter may not meet the declared one.
- PRECISE nitinol stents are disposable products and DO NOT be reused and / or re-sterilized.
- Do not use, when the packaging is damaged or open.
- Use before the shelf life term expiry as indicated on the packaging.
- Do not use Ethiodol and Lipiodol mediums.
- Keep the stent-delivery system away from organic solvents (such as spirit).
- Do not try to remove or change the stent position on the stent delivery system.
- When the stent is partially released, no reverse motion is possible by the stent delivery system.
- As in implantation of any vascular implants, the stent infection may cause thrombosis, false aneurysm and burst into neighboring organs or retroperitoneum.
- Stenting may cause thrombosis and embolization of distal vessels.
- Artery hyperextension may drive to their breaking and life-threatening bleeding development.
- For nickel-titanium alloy (nitinol) allergy patients, allergic reaction may develop in stenting.
It is not recommended to use such stents under the following conditions:
- Kidney damage, when in a doctor’s opinion, introduction of mediums may cause a patient’s state deterioration.
- Blood coagulation system disorders or any contradictions for anticoagulant and anti-thrombosis drug prescription.
- Vascular perforation that is proved by medium leakage from vasculature.
- Aneurysm dilations directly proximal or distal lesions.