Background This study tests the hypothesis in humans with ischemic heart disease that
myocardial blood flow response to dobutamine is linearly correlated with blood flow response to …

Background Age characteristics of patients undergoing various types of stress tests are
important because of differences in clinical background and exercise performance between the …

In early 1860, pundits across America confidently predicted the election of Illinois senator
Stephen A. Douglas in the coming presidential race. Douglas, after all, led the only party that …

The ability to stratify cardiac risk before nonvascular surgery using clinical markers and
dipyridamole-thallium scanning (DTS) was assessed for patients with known or suspected …

Background and Purpose—An M-shaped bifid notch on the ascending branch, or on the
zenith, of the R wave in inferior ECG leads (II, III, aVF), so called “crochetage,” is an indicator of …

Background—We tested the hypothesis that rest asynergy in collateral-dependent
myocardium correlates with coronary steal. Methods and Results—PET with [ 13 N]ammonia …

This review focuses on several related issues concerning positron emission tomography
measurements of regional myocardial blood flow using 13-N-ammonia in humans. The effect of …

OBJECTIVES We tested the hypothesis in patients (n = 24) with ischemic heart disease that
chronic contractile dysfunction occurs in myocardial regions with true reduction in rest blood …

States, often progressing silently until severe disease is present. It is also one of the most
frequent causes of death after noncardiac surgery. Therefore, risk stratification of patients with …

Background We hypothesized that the response of a myocardial segment to maximal dobutamine
reflects not only maximal blood flow but also tethering, metabolic, and β-blocker status. …