Introduction: For a detailed analysis of myocardial motion high temporal and spatial resolution is required. To avoid unacceptable long acquisition times, rapid imaging techniques have to be applied. In this contribution kt-BLAST and SENSE are compared in a beating heart phantom regarding the preservation of the velocity data in velocity encoded myocardial imaging at different degrees of accele...

Myocardial post-systolic shortening is characterized by a large variability in both duration and magnitude. Although typically occurring in a setting of ischemic heart disease, this regionally asynchronous myocardial contraction is considered a normal finding in approximately one-third of myocardial segments in healthy subjects, as long as the magnitude is low and the systolic strain is preserv...

Rhododendron dauricum L. is an ancient Chinese traditional herb. The pharmacological effects of R. dauricum extract have been shown in chronic tracheitis. The aim of this study was to investigate the cardiovascular effects of Rhododendron dauricum L. flavonoids (RF) on rats and its mechanisms. This study was performed in isolated vascular rings and a rat model of myocardial infarction and isola...

OBJECTIVE Normothermic blood perfusion is the developing trend of donor heart preservation. Theoretically, donor hearts preserved in a beating status may be the perfect method to reduce time-dependent ischemic injury, resuscitate marginal hearts expanding the donor pool and potentially improve the function of isolated hearts. In this study, to investigate the protective effect of normothermic b...

The protection of the ischemic neonatal myocardium was studied utilizing both cardioplegic and noncardioplegic solutions. Six groups of seven-day-old isolated working rabbit hearts, exposed to 120 minutes of hypothermic (3()oC) arrest, were treated with either an oxygenated or nonoxygenated cardioplegic or physiologic saline solution. The results indicated that postischemic aortic flow, stroke ...

Preservation of myocardial high-energy phosphates correlates with the heart's ability to resume normal function following aortic crossclamping (AXC). The ability of the canine myocardium to synthesize and maintain ATP during 180 minutes of AXC was evaluated in 12 hearts subjected to either blood or crystalloid cardioplegic arrest. Group 1 hearts were arrested by infusion of 750 ml of blood pota...

Abstract Perioperative myocardial injury is common after any major surgical procedure even with best possible anesthesia and management. Organ preservation during prevents morbidity mortality. The effect of ischemic preconditioning on as well other organ protection known. A variety agents also shown to have thus protective myocardium surgery. beneficial volatile anesthetic studied. However, the...

We previously reported that the myocardial energetic state, as defined by the ratio of phosphocreatine to ATP (PCr/ATP), was preserved at baseline (BL) in a swine model of chronic myocardial ischemia with mild reduction of myocardial blood flow (MBF) 10 wk after the placement of an external constrictor on the left anterior descending coronary artery. It remains to be seen whether this stable en...