Oxygenation-sensitive CMR for assessing vasodilator-induced changes of myocardial oxygenation
نویسندگان
چکیده
منابع مشابه
Oxygenation-sensitive CMR for assessing vasodilator-induced changes of myocardial oxygenation
BACKGROUND As myocardial oxygenation may serve as a marker for ischemia and microvascular dysfunction, it could be clinically useful to have a non-invasive measure of changes in myocardial oxygenation. However, the impact of induced blood flow changes on oxygenation is not well understood. We used oxygenation-sensitive CMR to assess the relations between myocardial oxygenation and coronary sinu...
متن کاملNon-invasive monitoring of blood gas-induced changes of myocardial oxygenation using oxygen-sensitive CMR
Methods A group of 7 healthy volunteers were instructed to hyperventilate for 1 and 2 minutes followed by a long free breath hold. A second group of 5 aquatic athletes performed a 60s breath hold and a free maximal breath hold. BOLD-sensitive SSFP cines were acquired during breath holds as well as before and after hyperventilation. Changes in signal intensity over the procedures were expressed ...
متن کاملImpact of Intermittent Apnea on Myocardial Tissue Oxygenation—A Study Using Oxygenation-Sensitive Cardiovascular Magnetic Resonance
BACKGROUND Carbon dioxide (CO(2)) is a recognized vasodilator of myocardial blood vessels that leads to changes in myocardial oxygenation through the recruitment of the coronary flow reserve. Yet, it is unknown whether changes of carbon dioxide induced by breathing maneuvers can be used to modify coronary blood flow and thus myocardial oxygenation. Oxygenation-sensitive cardiovascular magnetic ...
متن کاملTransmural variations of vasodilator-induced changes of myocardial oxygenation vary with age and the presence of diabetes mellitus type II: a study using oxygen-sensitive cardiovascular MR
Background Diabetes is a chronic disease process, which precedes the development of microvascular dysfunction, detectable as circumferential, subendocardial perfusion deficits on imaging. The full effect of this chronic disease process on myocardial oxygenation is, however, unknown. Studies using oxygen-sensitive Cardiovascular Magnetic Resonance (OS-CMR) have shown that pharmacologically induc...
متن کاملAssessing tissue oxygenation.
Although physical examination remains an important part of the nursing assessment, assessment of tissue oxygenation provides additional vital information. Nurses who are caring for patients with compromised functioning must have a basic understanding of the physiological relationships between oxygen saturation, cardiac output, and acid-base balance and must be able to plan nursing care based on...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cardiovascular Magnetic Resonance
سال: 2010
ISSN: 1532-429X
DOI: 10.1186/1532-429x-12-20