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Neither symptoms of anxiety and depression nor psychiatric history were associated with the occurrence of phantom shocks. Further studies using more explorative, qualitative research techniques http://www.selleckchem.com/products/a-1155463.html are warranted to examine the correlates of phantom shocks. ""Background:?Arrhythmia burden in patients receiving an implantable cardioverter defibrillator (ICD) after monomorphic ventricular tachycardia (mVT) is higher than in patients with other indications. We investigated the long-term arrhythmia profile in this subset of patients. Methods:?Fifty-two patients with an ICD implanted after mVT were followed up for at least 3 months. The cycle lengths (CLs) of the tachycardias recovered from the device memory were compared with http://www.selleckchem.com/products/cb-5083.html the CL of the index arrhythmia. Morphological analysis of the intracardiac electrograms was performed and the response to antitachycardia pacing (ATP) was also assessed. Results:?A total of 833 mVT episodes with intracardiac electrograms occurred during the follow-up (3�C58 months; mean: 30.3 months) in 41 of the 52 patients analyzed. mVTs with different CLs as compared with the index mVT were found in 26 (50.0%), and at least two different mVT morphologies were observed in 28 (53.8%) patients. Multiple mVT morphologies were predictive of lower ATP efficacy (95.6%, 85.0%, and 70.3% in the patients with 1, 2, and 3 or more mVT morphologies, respectively; P http://www.selleck.cn/products/PD-0332991.html both CL and morphology in patients with an ICD implanted for mVT. Multiple mVT morphologies during the follow-up were predictive of lower ATP efficacy and a higher shock burden. (PACE 2011; 34:1185�C1191) ""A 55-year-old male patient presented after a single shock caused by oversensing of isolated nonphysiologic signals on both the distal HV and pace-sense channels. No other abnormalities were found. He subsequently returned complaining of device ��vibration�� and his St. Jude implantable defibrillator (ICD; St. Jude Medical, St. Paul, MN, USA) was found to be in VVI backup mode and could not be interrogated. Direct testing in the electrophysiology lab showed normal lead impedances and thresholds with an inability to reproduce the abnormal signals. Detailed cine fluoroscopy of the leads found no abnormalities. A new ICD was connected and successfully delivered a 20-joule shock but failed to deliver a maximum output (39-joule) shock. The new ICD was again found to be in backup mode. A new Endotak Reliance G lead (Boston Scientific, Natick, MA, USA) was implanted and a maximum-output shock was successful using a new Fortify DR ICD.