ABC | Volume 112, Nº5, May 2019

Original Article Warpechowski Neto et al Hospital readmission – implantable devices Arq Bras Cardiol. 2019; 112(5):491-498 Figure 1 – Inclusion flowchart of the study patients. CIED: cardiac implantable electronic device. ICD: implantable cardioverter-defibrillator. CRT: cardiac resynchronization therapy. 1174 Patients submitted to CIED Excluded 950 single or dual chamber pacemaker 224 ICD/CRT Excluded 25 generator changes 199 ICD/CRT Table 1 – Sample characteristics. Porto Alegre, RS Variable Total n = 199 ICD n = 124 CRT-P/D n = 75 p value Age, years * 61.1 ± 14.2 61.1 ± 14.3 61.0 ± 14.2 0.963 Male gender † 143(71.9) 94(75.8) 49(65.3) 0.153 LVEF (%) * 38.4 ± 17.4 39.1 ± 17.0 37.4 ± 18.1 0.532 Etiology† 0.043 Non-ischemic cardiomyopathy 116(58.3) 66(53.2) 50(66.7) Ischemic cardiomyopathy 79(39.7) 56(45.2) 23(30.7) Valvular etiology 4(2) 2(1.6) 2(2.7) Type of health care† 0.349 SUS 134(67.3) 87(70.2) 47(62.7) Supplementary health care 65(32.7) 37(29.8) 28(37.3) Functional Class I 39(19.5) 32(25.8) 7(9.3) 0.007 II 24(12) 13(10.4) 11(14.6) III 72(36.1) 36(29) 36(48) IV 31(15.5) 21(16.9) 10(13.3) * Data shown as mean ± standard deviation; †Absolute and relative frequency; ICD: implantable cardioverter-defibrillator; CRT-P/D: cardiac resynchronization therapy; LVEF: left ventricular ejection fraction; SUS: Brazilian Unified Health System. the comparison of current data with the first era of stimulation, not only by the device evolution curve, the implant technique and population factor alterations, but also by the database of previous records – many of them comprising only complications demanding surgical intervention. Over the years, the variability of complication definitions has become more homogeneous, with a further description of conservative management adverse effects, with the inaccuracies in temporal definition of events having been overcome, now dichotomized as early or late within a time frame of 2 months. 6-8 The current series, many limited to the review of the last 20 years, indicate the first sixty days as the period with the highest incidence of complications, with rates that fluctuate around 10%, in their majority. 9,10 This study brings current national data on morbidity and mortality after ICD/CRT implantation. Our hospital is a tertiary cardiology center that performs approximately 1,000 device implants per year. The total incidence of complications related to the devices was 7% in the studied period, similar to that of other studies on the subject. 11 Our sample had an incidence of cable dislocation, infections and mortality of 0.5%, 2.5% and 2%, respectively. 493