Surveillance Analytics Core Team

Our Surveillance Analytics Core (SAC) team members are involved in a wide variety of research and clinical work related to early recognition of patient deterioration to prevent patient harm and death.

  • We have implemented a patient surveillance monitoring system in over 200 beds at Dartmouth Hitchcock Medical Center and other Dartmouth Health sites.
  • We have analyzed and designed an extensive Failure to Rescue (FTR) intervention system.
  • We continue to monitor applications in inpatient and outpatient settings.

Selected references

View a list of our publications on the PubMed website


Susan McGrath, PhD

Director, Surveillance Analytics Core & Masimo Collaboration Team Leader

  • Biomedical and systems engineer (BSEE, MS-BME, PhD-BME) and Lean Six Sigma Black Belt
  • 30+ years of experience leading research, design, and systems implementation programs
  • Leadership/faculty roles in industry, academia, government, and non-profit organizations
  • Led design and development of D-H Value Institute Learning Center and Performance Improvement department
  • Co-I and Director of our AHRQ-funded Patient Safety Learning Lab

George Blike, MD, MHCDS

Staff Physician, Anesthesiology

  • 30 years as a clinical anesthesiologist (specialties in high-risk obstetrics, cardiac, pediatric/neonatal anesthesia) - retired
  • Co-founder of DHMC Pain-Free pediatric sedation unit, Society for Pediatric Sedation
  • Researcher in applied human factors and patient safety science
  • Established a comprehensive simulation center at DHMC
  • Past president of the Society of Technology in Anesthesia
  • First DHMC Patient Safety Officer (2008), Chief Quality and Value Officer (DHMC and Dartmouth Health system 2012-2021)
  • PI of DHMC's AHRQ-funded Patient Safety Learning Lab

Irina Perreard, PhD

Senior Analyst for the Surveillance Analytics Core

  • Biomechanical engineer with 15 years of healthcare-related research experience
  • Lean Six Sigma Black Belt
  • Member of the AHRQ-funded Patient Safety Learning Lab (2015-2020)
  • Analyst for the Dartmouth Patient Deterioration Detection Lab (2014-2015)

Krystal M. McGovern, MSN, RN, MBA, CCRN

Clinical Researcher for the Surveillance Analytics Core

  • Value Institute team member specializing in quality and patient safety clinical improvement projects
  • Clinical Research Nurse with 12 years of experience in direct care nursing in all adult critical care and medical/surgical care areas
  • Adjunct Clinical Faculty, School of Nursing and Health Sciences, Colby-Sawyer College

Todd MacKenzie, PhD

Biostatistician, Professor of Biomedical Data Science

  • Dartmouth College professor in the departments of Biomedical Science, Geisel School of Medicine, and The Dartmouth Institute
  • Uses statistics to facilitate clinical and health services research in multiple disciplines and specialties
  • Common project investigations include comparative effectiveness, association studies, clinical trials, causal inference, survival analysis, and prediction modeling
  • Statistical work has been reported in over 290 publications
  • Has collaborated with members of the Surveillance Analytics Team since 2014