
Resumo: Homem de 50 anos, insuficiente renal crónico em hemodiálise, submetido a cateterismo cardíaco no contexto de síndrome coronária aguda, que revelou lesões estenóticas focais (tipo A) localizadas na descendente anterior proximal e circunflexa média. Efetuou-se angioplastia ad-hoc com implantação direta de stent. Imediatamente depois, observa-se abrupta queda tensional e o angiograma revela «novas» lesões com redução do fluxo em toda a árvore coronária e instalação de choque cardiogénico. Durante as manobras de reanimação, em dissociação eletromecânica, é administrado verapamil intracoronário com obtenção fluxo coronário TIMI 3, ritmo sinusal e pressão arterial. Assistiu-se progressivamente à melhoria e estabilização clínica. Foi implementado tratamento com antagonistas do cálcio e nitratos, registando-se no seguimento mais 2 admissões hospitalares por angor instável. A coronariografia voltou a revelar locais na árvore coronária que poderiam ser facilmente interpretados como novas lesões, mas as «estenoses» angiográficas foram solucionadas após administração de vasodilatadores intracoronários. Abstract: A 50-year-old man, with chronic kidney disease and on dialysis, underwent coronary angiography in the context of acute coronary syndrome, which revealed focal lesions (type A) in the proximal left anterior descending and mid circumflex arteries. Ad-hoc angioplasty was performed on both lesions with direct stenting. An immediate drop in arterial blood pressure was observed and the angiogram showed new lesions with reduced flow throughout the coronary tree, progressing to cardiogenic shock and electromechanical dissociation. During cardiopulmonary resuscitation maneuvers, intracoronary verapamil was administered and TIMI 3 flow, sinus rhythm and a rise in blood pressure were obtained. Clinical stability was progressively restored. The patient was discharged medicated with calcium channel blockers and nitrates. During follow-up, he was twice readmitted for unstable angina. Coronary angiography revealed findings that could easily have been interpreted as new obstructive lesions, but these resolved after administration of intracoronary nitrates. Palavras-chave: Angioplastia coronária, Vasoespasmo coronário, Choque cardiogénico, Verapamil, Keywords: Coronary angioplasty, Coronary vasospasm, Cardiogenic shock, Verapamil
RC666-701, Diseases of the circulatory (Cardiovascular) system
RC666-701, Diseases of the circulatory (Cardiovascular) system
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