PMID- 23001096 OWN - NLM STAT- MEDLINE DCOM- 20140121 LR - 20211021 IS - 1757-790X (Electronic) IS - 1757-790X (Linking) VI - 2012 DP - 2012 Sep 21 TI - Tachycardia-induced cardiomyopathy. LID - 10.1136/bcr-2012-006587 [doi] LID - bcr2012006587 AB - Tachycardia-induced cardiomyopathy (TIC) is an important cause of heart failure as it is potentially reversible after ventricular rate control. A 66-year-old hypertensive woman presented with a 15-day history of tachycardia, dyspnoea and oedema. ECG revealed atrial fibrillation with ventricular frequency of 130 beats per minute (bpm). Echocardiogram showed dilated left ventricle (LV) with 0.39 ejection fraction. Angiography revealed non-obstructed coronary arteries. Heart rate and cardiac failure were controlled with amiodarone, digoxine, captopril, metoprolol and furosemide. During follow-up, despite drug dose optimisation, the patient kept complaining of tachycardia and dyspnoea with a ventricular rate between 108 and 120 bpm. Medical staff suspected she was not taking her medicines properly. Two months later, the patient was asymptomatic and had converted to sinus rhythm (heart rate of 76 bpm). Echocardiogram showed normal LV size and function. Patient's diagnosis was TIC. Although rare, TIC should be considered in all cases of systolic dysfunction associated with tachyarrhythmia. FAU - Nakatani, Bruno Tsutomu AU - Nakatani BT AD - Department of Internal Medicine, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Sao Paulo, Brazil. FAU - Minicucci, Marcos Ferreira AU - Minicucci MF FAU - Okoshi, Katashi AU - Okoshi K FAU - Politi Okoshi, Marina AU - Politi Okoshi M LA - eng PT - Case Reports PT - Journal Article DEP - 20120921 PL - England TA - BMJ Case Rep JT - BMJ case reports JID - 101526291 SB - IM MH - Aged MH - Cardiomyopathy, Dilated/diagnosis/*etiology/physiopathology MH - Diagnosis, Differential MH - Dyspnea/etiology MH - Electrocardiography MH - Female MH - Heart/physiopathology MH - Humans MH - Tachycardia/*complications/physiopathology PMC - PMC4543895 EDAT- 2012/09/25 06:00 MHDA- 2014/01/22 06:00 PMCR- 2014/09/21 CRDT- 2012/09/25 06:00 PHST- 2012/09/25 06:00 [entrez] PHST- 2012/09/25 06:00 [pubmed] PHST- 2014/01/22 06:00 [medline] PHST- 2014/09/21 00:00 [pmc-release] AID - bcr-2012-006587 [pii] AID - 10.1136/bcr-2012-006587 [doi] PST - epublish SO - BMJ Case Rep. 2012 Sep 21;2012:bcr2012006587. doi: 10.1136/bcr-2012-006587.