Patient with history of tachyarrhythmias is on implantable cardioveer defibrillator. He develops shock. Best method to know the position and integrity of ICD is:
(A) CECT (B) MRI (C) USG (D) Plain radiograph
(A) Ans: A. CECT (Ref Hurst 's The Hea 13/e p1050)Plain radiograph:Best method to know ICD position & integrity.ICD Lead dislodgement:Radiographically visible.Significant increase in pacing threshold /decline in electrogram amplitude.