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      Clinical Interventions in Aging (submit here)

      This international, peer-reviewed Open Access journal by Dove Medical Press focuses on prevention and treatment of diseases in people over 65 years of age. Sign up for email alerts here.

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      Is Open Access

      Primary percutaneous coronary intervention ameliorates complete atrioventricular block complicating acute inferior myocardial infarction

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          Abstract

          Objective

          Complete atrioventricular block (CAVB) in acute inferior ST-segment elevation myocardial infarction (STEMI) is associated with poor clinical outcomes after noninvasive treatment. This study was designed to determine the effect of primary percutaneous coronary intervention (PCI) in patients with CAVB complicating acute inferior STEMI, at a single center.

          Methods

          We enrolled 138 consecutive patients diagnosed with STEMI involving the inferior wall; of these, 27 patients had CAVB. All patients received primary PCI. The clinical characteristics, procedural data, and clinical outcomes were compared in patients with versus without CAVB.

          Results

          Baseline clinical characteristics were similar between patients with and without CAVB. Patients with CAVB were more likely to present with cardiogenic shock, and CAVB was caused primarily by right coronary artery occlusion. Door-to-balloon time was similar between those two groups. After primary PCI, CAVB was reversed in all patients. The peak creatinine phosphokinase level, left ventricular ejection fraction and in-hospital mortality rate were similar between the two groups. After a median follow up of 318 days, major adverse cardiac events did not differ between the groups (8.1% in patients without CAVB; 11.1% in patients with CAVB) ( P=0.702).

          Conclusion

          We conclude that primary PCI can ameliorate CAVB-complicated acute inferior STEMI, with an acceptable rate of major adverse cardiac events, and suggest that primary PCI should be the preferred reperfusion therapy in patients with CAVB complicating acute inferior myocardial infarction.

          Most cited references18

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          2013 ACCF/AHA guideline for the management of ST-elevation myocardial infarction: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines.

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            The Bezold-Jarisch reflex revisited: clinical implications of inhibitory reflexes originating in the heart.

            The concept of depressor reflexes originating in the heart was introduced by von Bezold in 1867 and was later revived by Jarisch. The Bezold-Jarisch reflex originates in cardiac sensory receptors with nonmyelinated vagal afferent pathways. The left ventricle, particularly the inferoposterior wall, is a principal location for these sensory receptors. Stimulation of these inhibitory cardiac receptors by stretch, chemical substances or drugs increases parasympathetic activity and inhibits sympathetic activity. These effects promote reflex bradycardia, vasodilation and hypotension (Bezold-Jarisch reflex) and also modulate renin release and vasopressin secretion. Conversely, decreases in the activity of these inhibitory sensory receptors reflexly increase sympathetic activity, vascular resistance, plasma renin activity and vasopressin. Long regarded as pharmacologic curiosities, it is now clear that reflexes originating in these inhibitory cardiac sensory receptors are important to the pathophysiology of many cardiovascular disorders. This paper reviews the role of inhibitory cardiac sensory receptors in several clinical states including 1) bradycardia, hypotension and gastrointestinal disorders with inferoposterior myocardial ischemia and infarction, 2) bradycardia and hypotension during coronary arteriography, 3) exertional syncope in aortic stenosis, 4) vasovagal syncope, 5) neurohumoral excitation in chronic heart failure, and 6) the therapeutic effects of digitalis.
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              Inferior myocardial infarction. High-risk subgroups.

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                Author and article information

                Journal
                Clin Interv Aging
                Clin Interv Aging
                Clinical Interventions in Aging
                Clinical Interventions in Aging
                Dove Medical Press
                1176-9092
                1178-1998
                2014
                24 November 2014
                : 9
                : 2027-2031
                Affiliations
                Department of Internal Medicine, St Vincent’s Hospital, The Catholic University of Korea, Suwon, South Korea
                Author notes
                Correspondence: Keon-Woong Moon, Department of Internal Medicine, St Vincent’s Hospital, # 93-6, Ji-dong, Paldal-ku, Suwon, Gyunggi-do, 442-723, South Korea, Tel +82 31 249 7139, Fax +82 31 247 7139, Email cardiomoon@ 123456gmail.com
                Article
                cia-9-2027
                10.2147/CIA.S74088
                4246926
                25473274
                b53655c1-1742-4295-ba62-797949e7c2cb
                © 2014 Lee et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

                The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

                History
                Categories
                Original Research

                Health & Social care
                major adverse cardiac events,pci-capable hospital
                Health & Social care
                major adverse cardiac events, pci-capable hospital

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