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Introduction:Cardiac resynchronization therapy (CRT) is an indication in heart failure with wide QRS and severely reduced left ventricular ejection fraction. Objectives: To define the response predictors favorable to CRT. Method: An observational, descriptive, retrospective study was conducted to evaluate the QRS index (difference between the QRS width before and after implantation, divided by its value before implantation, multiplied by 100) as a predictor of favorable response to CRT. Electrocardiograms were performed before the procedure, at 6 and 12 months after implantation. The measurements were made by two independent observers, the first digital on the operating room monitor and the rest manual. Results: A total of 91 patients (mean age 61.2 years, 76% men) were included, with QRS wider than 120 ms and ejection fraction less than 35%. A favorable response was obtained in 59%. There were no significant pre-implant differences in the QRS duration between responders and non-responders (151.3 ms vs. 151.34 ms, p=0.98), but there were differences post-implant (100 vs. 115 ms, p

Introduction: The implantable cardioverter-defibrillator (ICD) has proven useful in the primary and secondary prevention of sudden cardiac death. The increase of its use motivates interest on its effectiveness outside the clinical trials. The first registration of an ICD implantation in Cuba is performed. Objective: To know the current situation of an ICD implantation in Cuba, regarding clinical data, indication, type of implant, device and complications of the procedure. Method: The registration’s data were obtained through the collection form, which was completed voluntarily by each implantation team during or after the implant. Results: The total number of implants was 121, and the rate of 10.76 per million inhabitants. The procedure was performed in 5 medical institutions in the country, and 69.4% of the devices were implanted at the «Instituto de Cardiología y Cirugía Cardiovascular». The mean age was 58.05 ± 14.83, with a predominance of men (71.1%). The 52.1% were primo-implantation, dual-chamber devices represented 43.8% and triple-chamber 16.5%. In the primoimplants predominated patients with ejection fraction ≤35% (42.9%), in sinus rhythm (92.1%), with functional class III-IV (49.2%) and ischemic heart disease (41.3%). The 79.4% of the first implants were secondary prevention, and sudden death (42.9%), the most common clinical presentation. Complications were infrequent (4.1%) and the hematoma predominated. Conclusions: The implantation rate of the ICD per million inhabitants is comparable with that of Latin American countries. The implants of triple-chamber systems and in primary prevention are still modest.

Copyright of CorSalud is the property of Cardiocentro Ernesto Che Guevara and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CorSalud is the property of Cardiocentro Ernesto Che Guevara and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CorSalud is the property of Cardiocentro Ernesto Che Guevara and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)