Loading...
  • positron emission t
  • Methods and Results -Myocardial blood flow (MBF) was quantified with [ 13 N]ammonia and positron emission tomography (PET) at rest, during cold pressor testing (endothelium-dependent vasomotion), and during dipyridamole-induced hyperemia in 16 long-term smokers and 17 nonsmokers. (ahajournals.org)
  • Myocardial blood flow at rest and during adenosine-induced hyperemia after an overnight fast and during insulin infusion were measured using positron emission tomography (PET) and [ 15 O]-labeled H 2 O. Because other studies have suggested that insulin might cause an increment in the blood flow ( 8 - 11 ), we hypothesized that insulin would also induce vasodilation in these subjects. (diabetesjournals.org)
  • subepicardium
  • The coronary blood flow during systole in the subendocardium of the ejecting heart was 62% of that in the subepicardium. (ahajournals.org)
  • 1-3 ] All of these agents reduce arteriolar tone in the area supplying collateral flow or in the subepicardium, which has a vasodilator reserve. (asahq.org)
  • Physiologic recordings and stable-isotope microsphere determination of myocardial blood flow to the subepicardium and subendocardium were obtained at baseline and during single-ventricle physiology (at 30 minutes, 120 minutes, and afterload increase). (ovid.com)
  • diastolic
  • Acetylcholine reduced heart rate by 30% and significantly depressed the arterial systolic and diastolic blood pressure. (springer.com)
  • arterial
  • Comments on "arterial CO2 myocardial O2 consumption and coronary blood flow in the dog. (ahajournals.org)
  • ALTHOUGH unintended or deliberate variation of the arterial carbon dioxide partial pressure (Pa CO 2 ) is common in anesthetic practice, little is known about the myocardial consequences of respiratory alkalosis and acidosis in humans. (asahq.org)
  • A 20-gauge catheter was placed in the radial artery to measure mean arterial pressure and to collect blood samples. (asahq.org)
  • sevoflurane
  • CONCLUSIONS: In otherwise healthy subjects who are not subjected to surgical stimulation, MBF at rest and after sympathetic stimulation is preserved during sevoflurane anesthesia despite a decrease in myocardial blood volume. (biomedsearch.com)
  • function
  • MBF and MFR test-retest repeatability were the best with dual spillover correction, left atrium blood input function, and global DV. (hindawi.com)
  • bolus
  • We conclude that a single intracoronary bolus of VEGF is capable of significantly augmenting flow to collateral-dependent ischemic myocardium. (nih.gov)
  • sympathetic
  • The sympathetic vasoconstrictor activity that caused the initial reduction in flow could be blocked by proximal nervous blockade, increasing the subcutaneous blood flow by 130, 63 and 14% on days 1, 3 and 7 respectively after coronary occlusion. (clinsci.org)
  • augmentation
  • Myocardial oxygen supply/demand balance fell in single-ventricle physiology, remaining unchanged during afterload augmentation. (ovid.com)