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International journal of cardiology

ISSN 1874-1754

2 papers in the library · 24 citations · publishing 2009-2010

Papers

Apical regional wall motion abnormalities reminiscent to Tako-Tsubo cardiomyopathy following consumption of psychoactive fungi.

International journal of cardiology May 1, 2009 Holger M Nef, Helge Möllmann, Pirmin Hilpert et al. 24 citations

A young man experienced an acute coronary syndrome with ST-elevation after consuming psychoactive fungi ("magic mushrooms"). Coronary angiography found no significant coronary artery disease, but ventriculography showed contractile dysfunction with apical hypokinesia resembling Tako-Tsubo cardiomyopathy. Cardiovascular magnetic resonance imaging ruled out myocardial infarction or inflammation. Ventricular function normalized within days. The active metabolite psilocybin interacts with dopaminergic, adrenergic, and serotonergic receptors, suggesting pathomechanisms similar to those in Tako-Tsubo cardiomyopathy.

Heart rate dynamics in different levels of Zen meditation.

International journal of cardiology November 5, 2010 Caroline Peressutti, Juan M Martín-González, Juan M García-Manso et al.

Heart rate variability (HRV) differs among practitioners of Zen meditation (Zazen) depending on their level of experience. Nineteen subjects with varying experience participated; in four cases both HRV and respiration were recorded. Analysis using frequency-domain methods and continuous wavelet transform showed that shifts in respiratory sinus arrhythmia (RSA) reflect differing levels of practice. The modulation of RSA may indicate changes in breathing patterns and parasympathetic outflow related to attention quality and focus in each stage of meditation.