The study presents cardiology literature records retrieved from MEDLINE database for the period 1991-2010. This research shows that maximum number of records (829) was during 2000, followed by 826 in 2003 and 789 in 2002. Relative Growth Rate (RGR) and Doubling Time (Dt) was found to be in increasing and decreasing trend shown during the period of study. The paper reveals a study of the authorship pattern and collaborative research in the field of cardiology. The degree of collaboration mean score was 0.70 and highest score 0.88 in 1991 exhibits during the period of study.

Key words: Cardiology; MEDLINE; Relative growth rate (RGR); Doubling time (Dt); Degree of collaboration.