Annuska Schoorlemmer

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About

Annuska Schoorlemmer is a leading surgical outcomes researcher whose work centers on the volume-outcome relationship in complex pancreatic surgery, with a particular focus on how institutional mergers and centralization affect patient survival. Her landmark study, “Impact of Merging two High-volume Centers on Patient Outcome,” challenges the prevailing assumption that the volume-outcome benefit plateaus beyond 40–50 pancreatoduodenectomies (PD) per year. By analyzing the merger of two already high-volume centers, she demonstrated that even at elevated volumes, further centralization can yield measurable improvements in mortality and complication rates—a finding with profound implications for health policy and surgical referral patterns. Her research has been instrumental in shaping the debate around regionalization of care, providing evidence that the relationship between surgical volume and outcomes may be more dynamic than previously thought. With her work accumulating citations and influencing clinical guidelines, Schoorlemmer continues to be a key voice in the movement toward evidence-based restructuring of complex surgical services.