Abstract
Patients with obstructive sleep apnea syndrome (SAS) suffer from repeated episodes of hypoxemia and it is however unknown how this may affect regulation of myocardial oxygenation. Oxygenation-sensitive cardiovascular magnetic resonance (OS-CMR) detects changes of myocardial oxygenation by associated changes of signal intensity (SI). We have recently demonstrated that apnea induces a vasodilatory response in the myocardium with an increase of myocardial oxygenation after the breath-hold. In this study we assessed the variation of SI change throughout the breath-hold.
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