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Letter to the Editor
Recurrent syncope in a patient with vasospastic angina
Síncopes de repetición en un paciente con angina vasoespástica
Javier Ramos-Maquedaa,
Corresponding author
javierramosmaqueda7@gmail.com

Corresponding author.
, Adrián Riaño Ondivielaa, Cristina Navarro-Valverdeb
a Unidad de Arritmias, Servicio de Cardiología, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
b Unidad de Arritmias, Servicio de Cardiología, Hospital Clínico Universitario Virgen de Valme, Sevilla, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Vasospastic angina or Prinzmetal&#8217;s angina is an underdiagnosed pathology characterized by episodes of chest pain at rest and electrocardiographic abnormalities&#44; mainly transient elevation of the ST segment&#44; due to coronary vasospasm&#46;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> Although this pathology can sometimes manifest itself with cardiogenic syncope in relation to atrioventricular blocks &#40;AVB&#41;&#44; these episodes are not always caused by bradyarrhythmias&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">We report the case of a 54-year-old male smoker of 20 cigarettes a day&#44; treated with acetylsalicylic acid &#40;ASA&#41; for a previous episode of amaurosis fugax&#46; Two months after this episode&#44; he consulted the emergency department for a 5&#8239;min angina with subsequent cardiogenic profile syncope while sitting on the sofa&#46; Upon arrival at the hospital&#44; the electrocardiogram &#40;ECG&#41; showed no signs of ischemia&#44; the serum levels of ultrasensitive troponin T were within the normal range&#44; and the echocardiogram showed no findings of interest&#46; A coronary angiography was performed that did not reveal lesions in the coronary arteries&#46; However&#44; a few hours later&#44; he had another episode of angina accompanied by presyncope&#46; Telemetry monitoring showed signs of acute ischaemia and advanced AVB that subsided with sublingual nitrite administration&#44; leading to a diagnosis of vasospastic angina&#46; Despite quitting smoking and starting maximum doses of calcium antagonists and nitrates&#44; the patient suffered a new episode of angina with advanced syncopal AVB&#44; and it was decided to perform a permanent transvenous pacemaker implantation&#46; At the first check-up after discharge&#44; the patient continued to report some non-syncopal rest anginal episode accompanied by frequent palpitations&#46; A 24&#8239;h Holter monitor documented high-density polymorphic ventricular extrasystoles &#40;23&#37; of heartbeats&#41; without episodes of sustained ventricular tachycardia&#46; Beta-blockers were not prescribed for such symptomatic extrasystoles as they are contraindicated in vasospastic angina&#46; A few months later&#44; he suffered a new episode of angina with subsequent loss of consciousness for which he returned to the emergency department&#44; where&#44; on arrival&#44; while an ECG was being performed&#44; he had another episode of chest pain accompanied by presyncope&#46; On pacemaker examination&#44; it was documented that the patient had experienced ventricular fibrillation &#40;VF&#41; during the first episode at home&#44; so his pacemaker was upgraded to a dual-chamber cardioverter-defibrillator&#46; The subsequent progression was favourable&#44; although the patient continued with occasional angina and has required both cardiac pacing in 28&#37; of his heartbeats and an appropriate shock for a new episode of VF&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">Patients with vasospastic angina may experience syncope in association with bradyarrhythmias and even sudden cardiac death due to ventricular tachyarrhythmias&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> There is evidence of the benefit of the use of implantable cardioverter-defibrillators in patients with sudden cardiac death recovery<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">3</span></a>&#59; however&#44; there is no consensus on its use as primary prevention&#44; so individualization of the risk in each case is recommended&#46;<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> In this case&#44; although the disease was potentially reversible with medical treatment&#44; there were some factors that had been shown to be potentiating factors&#44; such as ASA&#44; which could not be discontinued due to the risk of a new episode of amaurosis fugax&#46; Untreated oligosymptomatic ventricular extrasystoles due to the contraindication of beta-blockers in this disease could have acted as a precipitant of the VF episode&#44; although it could also be directly caused by transient ischaemia in the context of coronary spasm&#46; We therefore consider&#44; after this case&#44; that the existence of high-density ventricular extrasystoles in the 24&#8239;h Holter could be considered as a predictor of risk of sudden death in these patients and that&#44; if they occur&#44; other second-line antiarrhythmic treatments should be considered&#44; as well as individualised consideration of the implantation of a cardioverter-defibrillator to avoid subsequent potentially lethal arrhythmic events&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Conflict of interests</span><p id="par0020" class="elsevierStylePara elsevierViewall">There are no conflicts of interest&#46;</p></span></span>"
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Article information
ISSN: 23870206
Original language: English
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es en pt

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