A Prospective Observational Study on Intravenous Heparin Dosing and Therapeutic Activated Partial Thromboplastin Time (aPTT) in Patients with Cardiovascular Diseases Journal title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) Authors: Dr. ManjulaDevi .A. S, EstherK. Thomas, Gayathiri G. R, Georgeena George, Ginsy Thankachan Subject(s):