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Copyright of Archivos de Cardiología de México is the property of Publicidad Permanyer SLU 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 Archivos de Cardiología de México is the property of Publicidad Permanyer SLU 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 Archivos de Cardiología de México is the property of Publicidad Permanyer SLU 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.)

Objetive. Out-of-hospital cardiac arrest (OCHA) is a public health problem in which survival depends on community initial response among others. This study tries to analyze what's the proportional cost of enhancing such response by involving the police corps in it. Materials and Methods. We analyzed retrospectively an OCHA registry started on June 2009. We contrasted a model with limited number of ambulances and police based irst response. Results. Mortality was 100%, response times high and 10.8% of the victims were receiving cardiopulmonary resuscitation (CPR) by bystanders. In 63.7% of the events the police arrived before the ambulance, in 1.5% of these cases the police provided CPR. The cost for each saved life was of 5.8-60 million Mexican pesos per life with only ambulance model vs 0.5-5.5 million Mexican pesos on a police first response model with 12 ambulances. Conclusions. In Queretaro interventions can be performed taking advantage of the response capacity of the existing police focused on diminishing mortality from OCHA at a lesser cost than delegating this function only to ambulances. [ABSTRACT FROM AUTHOR]

Syncope is a common symptom among older adults. Its aetiologic diagnosis is mainly clinical, but when it has an unknown origin, complementary studies are necessary. We present the experience of a single center in diagnosing Unknown Origin Syncope (UOS). Methods: We performed a transversal retrolective study to assess the different tests done to patients studied because of USO. Results: The mean age of the older group was 77.6±6.9 years. The 24-hour Holter were abnormal in 77.9% of patients, but diagnostic in only 16.3%. Age older than 65 years was associated with a 1.9 increase (CI 95% 0.9 - 4) in the possibilities of having a diagnosis, while age lesser than 65 was associated with a 0.5 risk IC 95% 0.2 - 1.08 of having a diagnosis. The 48-hour holter showed similar results. Older age was associated with a 1.69 OR, CI 95% 0.6 - 4.4 to have a positive Tilt test (91% of older patients). They had mainly the vasodepressor variety of neurally-mediated syncope. (57.1% Vs 40.1%, p=0.01). Of the 6 electrophysiologic studies performed in people older than 65 years, 3 where diagnostic (50% Vs 33.3%, p=0.6).Conclusions: Complimentary tests in people elder than 65 years are diagnostic in a higher proportion than in their younger counterparts. Nevertheless there is a higher risk of false-positive results, so tests such as head-up tilt test should be more carefully interpreted. [ABSTRACT FROM AUTHOR]

We present a 56 years-old male patient with an acute ischemic episode. The patient showed significant dilation of the left main coronary artery and proximal segments of the left descending artery, as well as a right coronary artery with a 10 mm diameter in the proximal and medial segments. These findings are compatible with a Kawasaki's disease in a chronic phase. © 2014 Instituto Nacional de Cardiología Ignacio Chávez. Published by Masson Doyma México S.A. All rights reserved. [ABSTRACT FROM AUTHOR]