I grew up in the midwest but followed my wife to the Bay Area after my residency. The area has been wonderful to us and we enjoy spending time with our extended family and our new son. I am passionate about emergency medicine and you will often find me reading or teaching on the subject during my free time. I truly feel grateful to have a position which affords me not only the opportunity to learn and teach, but more so the ability to help people in their hour of need.

Clinical Focus

  • Emergency Medicine
  • Cardiovascular Emergencies
  • Conscious Sedation
  • Airway Management
  • Pediatric Emergency Medicine

Academic Appointments

Professional Education

  • Board Certification: Emergency Medicine, American Board of Emergency Medicine (2013)
  • Fellowship, Stanford, Department of Emergency Medicine, Cardiovascular Emergency Medicine (2013)
  • Residency, Hennepin County Medical Center, Minneapolis, Minnesota, Emergency Medicine (2012)
  • MD, University of Colorado School of Medicine, Medicine (2009)
  • MA, University of Denver, Denver, Colorado, Chemistry (2005)
  • BS, St. Cloud State University, St. Cloud, Minnesota, Physics (2003)

Research & Scholarship


  • Q-UTI Collaborative, Stanford and LPCH

    Working with a multidisciplinary team as part of an international study reviewing the management of pediatric patients hospitalized with febrile urinary tract infections


    Stanford, CA


    • Anna Lin, Clinical Instructor, Pediatrics, School of Medicine
    • Nivedita Srinivas, Clinical Instructor, Pediatrics, School of Medicine
    • Hsi-Yang Wu, Associate Professor of Urology at the Stanford University Medical Center, Stanford


2014-15 Courses


All Publications

  • False-Negative FAST Examination: Associations With Injury Characteristics and Patient Outcomes ANNALS OF EMERGENCY MEDICINE Laselle, B. T., Byyny, R. L., Haukoos, J. S., Krzyzaniak, S. M., Brooks, J., Dalton, T. R., Gravitz, C. S., Kendall, J. L. 2012; 60 (3): 326-334


    Focused assessment with sonography in trauma (FAST) is widely used for evaluating patients with blunt abdominal trauma; however, it sometimes produces false-negative results. Presenting characteristics in the emergency department may help identify patients at risk for false-negative FAST result or help the physician predict injuries in patients with a negative FAST result who are unstable or deteriorate during observation. Alternatively, false-negative FAST may have no clinical significance. The objectives of this study are to estimate associations between false-negative FAST results and patient characteristics, specific abdominal organ injuries, and patient outcomes.This was a retrospective cohort study including consecutive patients who presented to an urban Level I trauma center between July 2005 and December 2008 with blunt abdominal trauma, a documented FAST, and pathologic free fluid as determined by computed tomography, diagnostic peritoneal lavage, laparotomy, or autopsy. Physicians blinded to the study purpose used standardized abstraction methods to confirm FAST results and the presence of pathologic free fluid. Multivariable modeling was used to assess associations between potential predictors of a false-negative FAST result and false-negative FAST result and adverse outcomes.During the study period, 332 patients met inclusion criteria. Median age was 32 years (interquartile range 23 to 45 years), 67% were male patients, the median Injury Severity Score was 27 (interquartile range 17 to 41), and 162 (49%) had a false-negative FAST result. Head injury was positively associated with false-negative FAST result (odds ratio [OR] 4.9; 95% confidence interval [CI] 1.5 to 15.7), whereas severe abdominal injury was negatively associated (OR 0.3; 95% CI 0.1 to 0.5). Injuries to the spleen (OR 0.4; 95% CI 0.24 to 0.66), liver (OR 0.36; 95% CI 0.21 to 0.61), and abdominal vasculature (OR 0.17; 95% CI 0.07 to 0.38) were also negatively associated with false-negative FAST result. False-negative FAST result was not associated with mortality (OR 0.89; 95% CI 0.42 to 1.9), prolonged ICU length of stay (relative risk 0.88; 95% CI 0.69 to 1.12), or total hospital length of stay (relative risk 0.92; 95% CI 0.76 to 1.12). However, patients with false-negative FAST results were substantially less likely to require therapeutic laparotomy (OR 0.31; 95% CI 0.19 to 0.52).Patients with severe head injuries and minor abdominal injuries were more likely to have a false-negative than true-positive FAST result. On the other hand, patients with spleen, liver, or abdominal vascular injuries are less likely to have false-negative FAST examination results. Adverse outcomes were not associated with false-negative FAST examination results, and in fact patients with false-negative FAST result were less likely to have a therapeutic laparotomy. Further studies are needed to assess the strength of these findings.

    View details for DOI 10.1016/j.annemergmed.2012.01.023

    View details for Web of Science ID 000308620500014

    View details for PubMedID 22512989

  • Spectroscopy applied to on-road mobile source emissions APPLIED SPECTROSCOPY Burgard, D. A., Bishop, G. A., Stadtmuller, R. S., Dalton, T. R., Stedman, D. H. 2006; 60 (5): 135A-148A

    View details for Web of Science ID 000237744300001

    View details for PubMedID 16756695

  • Winter motor-vehicle emissions in Yellowstone National Park ENVIRONMENTAL SCIENCE & TECHNOLOGY Bishop, G. A., Burgard, D. A., Dalton, T. R., STEDMAN, D. H., Ray, J. D. 2006; 40 (8): 2505-2510

    View details for Web of Science ID 000236992700007

    View details for PubMedID 16683584

  • Nitrogen dioxide, sulfur dioxide, and ammonia detector for remote sensing of vehicle emissions REVIEW OF SCIENTIFIC INSTRUMENTS Burgard, D. A., Dalton, T. R., Bishop, G. A., Starkey, J. R., STEDMAN, D. H. 2006; 77 (1)

    View details for DOI 10.1063/1.2162432

    View details for Web of Science ID 000234979400019

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