A study of blood coagulation was made on cardiac patients with and without acute myocardial infarction, prior to anticoagulant therapy. The heparin clotting time, an in vitro modification of the heparin tolerance test, was accelerated in 74 per cent (14 out of 19) of the patients with acute myocardial infarction studied within three weeks after the attack. One out of 14 patients without acute m...

We appreciate the opportunity to respond to Dr. Zucker’s letter. We disagree with Dr. Zucker’s statement that the appropriate activating clotting time (ACT) was not chosen for the study. The ACT chosen is in the applicable clinical range over a wide variety of applications and any system must be able to accurately determine levels within this range. We also disagree that the level of variation ...

The flow patterns emerging at a catheter migrating close to the simulated superior vena cava (SVC) wall has been investigated for jet to cross stream velocity ratios of 3 and 6 experimentally. As the catheter moves close to the SVC wall, changes in the jet behavior can potentially cause health problems to the patient. In this study, time-averaged velocity, vorticity, and Reynolds stress correla...