Introduction: Central Venous Catheterization (CVC) is an invasive procedure used for many reasons in the clinics such as hemodynamic monitoring, fluid and drug administration and hemodialysis. It is unlikely problem to forget central catheter wire (CW) in intravascular area and this creates dangerous consequences. Causes such as inattention, inexperience, time constraints due to workload, fatigue and the absence of accompaniment from a more experienced clinician are the main reasons for this complication.Case Report: We present in this article, a case of forgotten CW starting from subclavian vein and making a ring around the tricuspid valve in the right atrium, extending to the vena iliaca communis dextra and meanwhile, preventing the tricuspid valve closure and leading to decompensated right heart failure. This complication has not been reported previously.Conclusion: CVC is a commonly used method. It gives us great benefit in follow-up and treatment. It should be kept in mind that the forgotten wire can cause a right heart failure secondary to mechanical tension on the tricuspid valve; as one of its complications.