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Medicina (Buenos Aires)

versión impresa ISSN 0025-7680versión On-line ISSN 1669-9106


GOBBO, Magali et al. Non-invasive follow-up of adjusted treatment in patients with microvascular angina. Medicina (B. Aires) [online]. 2022, vol.82, n.4, pp.621-625. ISSN 0025-7680.

There are currently multiple invasive and non-invasive methods that can be used to establish the diagnosis of microvascular dysfunction (MVD) in patients with INOCA (Ischemia with Non-Obstructive Coronary Arteries) and microvascular angina. However, we still do not have a specific treatment approach for this group of patients. The current trend is to adjust the treatment to the pathophysiological mechanism involved, adding calcium blockers in those patients where endothelial dysfunction is demonstrated or beta blockers in those patients who present smooth muscle-dependent dysfunction. We present three clinical cases of INOCA with suspected microvascular angina. Two of them underwent a non-invasive diagnosis of MVD by CZT-SPECT, using dipyridamole to evaluate the smooth muscle-dependent mechanism and cold pressor test to evaluate the endothelium-dependent mecha nism. According to the results obtained, the treatment was adju sted, clinical follow-up was carried out and angina was assessed using the Seattle scale, with a new microcirculation assessment at 6 months. The third clinical case, on the other hand, was a patient who began empirical treatment for both mechanisms and subsequently abandoned the established treatment. Microvascular function was evaluated under pharmacological treatment and without it.

Palabras clave : Microvascular circulation; Myocardial ischemia; SPECT.

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