While spatial asynergy at end-systole has been well characterized in patients with coronary artery disease, assessment of regional asynchrony has been hampered by technical constraints. We developed a computer-assisted method for analyzing regional asynchrony from the equilibrium (ECG-gated) radionuclide ventriculogram. Twenty patients with normal contrast left ventriculograms (nine with a norm...

This study aimed to determine the effect of aerobic heart rate zone physical activity on systolic and diastolic systems. type research is quantitative with an experimental approach (Pretest-posttest one group design). The sample in this amounted 10 samples selected through purposive sampling technique: data collection techniques using measurement tests. At same time, treatment given form activi...

Recent clinical reports have indicated that myocardial bridge and mural coronary artery complex (MB-MCA) might cause major adverse cardiac events. 256-slice CT angiography (256-slice CTA) is a newly developed CT system with faster scanning and lower radiation dose compared with other CT systems. The objective of this study is to evaluate the morphological features of MB-MCA and determine its ch...

Echocardiographic studies have confirmed that normal splitting of the first heart sound is a result of mitral valve closure preceding tricuspid valve closure. This fits in with contraction of the left ventricle before the right, but the width of splitting is usually greater than would be expected from the known ventricular asynchrony. The importance of atrial systole, which initiates closure of...

Porter sums up the history of the early work on the coronary circulation as follows: In I689, J. Baptiste Scaramenci demonstrated that the vessels were squeezed during systole and filled in diastole. This view was supported by Stroem, in I7o7, with the fact that the aortic valves close the coronary openings during systole. In I855, Hyrtl stated that blood spurted from a cut coronary during syst...

We provide an explicit lower bound for the systole in principal congruence covers of compact quaternionic hyperbolic manifolds. also prove optimality this bound.

Background Differences in myocardial blood flow (MBF) between systole and diastole have been reported in healthy volunteers but the impact of cardiac phase on detecting coronary artery disease (CAD) is unknown [1]. This study aimed to compare MBF estimates from cardiovascular magnetic resonance (perfusion-CMR) imaging in systole and diastole in patients with suspected CAD and determine if eithe...

This study was designed to quantitate transmural myocardial blood flow when coronary arterial inflow was limited to systole and during the subsequent reactive hyperemic response. Studies were performed in 10 awake dogs chronically prepared with electromagnetic flowmeters and pneumatic occluders on the left circumflex coronary artery. Intermittent coronary perfusion, confined to the interval of ...

AIM The aim of this study was to establish M-mode echocardiographic reference values in Pantja goats and to study the effect of gender and body weight (BW) on these parameters. MATERIALS AND METHODS A total of 18, clinically healthy, adult Pantja goats of either sex, aged 2-4 years and weighing 10-44 kg were included in the study. Echocardiographic examination was performed in the standing un...