Report summary

University of Michigan–ann Arbor Department of Cardiac Surgery in 2015-2017 reads as a 22-PI network with 33 internal PI collaborations. The research center of gravity is Medicine as the leading field (58% of slots across 19 PIs; 19 labels), Surgery as the leading subfield (20% of slots across 12 PIs; 12 labels), and Cardiac Structural Anomalies and Repair as the leading topic (11% of slots across 7 PIs; 7 labels). That is promising: collaboration is not just one large hairball, and the leading breakdown groups cover 15 PIs across distinct clusters. The most prominent PIs by weighted works are Donald S. Likosky (12.6 weighted works; Acute Kidney Injury Research, Cardiac Arrest and Resuscitation); Robert H. Bartlett (11.8 weighted works; Mechanical Circulatory Support Devices, Cardiac Arrest and Resuscitation). The strongest pairings are Donald S. Likosky and Richard L. Prager (16 shared works, weight 7.9). The strongest breakdown groups are group 1 with 7 PIs, 7 internal connections, weight 11.8, around Surgery, Epidemiology, Pulmonary and Respiratory Medicine, led by Francis D. Pagani, Ming‐Sing Si, Richard G. Ohye.