Daniel W Carlson

Walter Reed National Military Medical Center, Washington, Washington, D.C., United States

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Publications (6)69 Total impact

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    ABSTRACT: BACKGROUND: Therapeutic hypothermia (TH) has been demonstrated to improve clinical outcomes after out-of-hospital ventricular fibrillation (VF) cardiac arrest. It remains unclear if TH can be safely and effectively used in the setting of traumatic arrest. Furthermore, the use of TH methods in the pre-hospital and transport environments remain poorly established and a domain of active investigation. OBJECTIVES: To describe a case of successful TH utilization after blunt trauma with commotio cordis and pulmonary contusion, and to describe the continuation of TH during international fixed-wing aeromedical transport. Case Report: A 33-year-old active duty soldier suffered blunt chest trauma and immediate VF arrest. He was successfully resuscitated with cardiopulmonary resuscitation and defibrillation attempts. Given his ensuing comatose post-arrest state, he was therapeutically cooled and subsequently evacuated from Iraq to Germany, with cooling maintenance established in flight without the availability of training or commercial cooling equipment. The patient exhibited an eventual excellent neurologic recovery. To utilize TH for this patient, military physicians with limited local resources employed a telemedical approach to obtain a hypothermia protocol to develop a successful treatment plan. CONCLUSIONS: The patient's successful resuscitation suggests that care should not be withheld for blunt trauma patients without vital signs in the field if VF is present, until the differential diagnosis of commotio cordis has been considered.
    Journal of Emergency Medicine 10/2012; · 1.33 Impact Factor
  • Daniel W Carlson, John E Atwood
    New England Journal of Medicine 10/2012; 367(15):e20. · 54.42 Impact Factor
  • Journal of cardiovascular computed tomography 11/2007; 1(2):119-22. · 2.55 Impact Factor
  • Journal of cardiovascular computed tomography 11/2007; 1(2):108-9. · 2.55 Impact Factor
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    ABSTRACT: The study assessed whether the American College of Cardiology/American Heart Association (ACC/AHA) preoperative cardiac assessment guidelines impact patient management and predict major cardiac events in patients undergoing orthopedic surgery. We conducted a retrospective review of 338 consecutive orthopedic preoperative evaluations performed by internal medicine consultants. Major cardiac events were defined as myocardial infarction, congestive heart failure, and sudden cardiac death. Major cardiac events occurred in 5.7% of patients. Patients with minor or absent ACC/AHA clinical risk predictors were less likely to have major cardiac events (P = .007). More than half (51%) of patients meeting ACC/AHA indications for noninvasive cardiac tests did not receive them. However, most (69%) major cardiac events occurred in patients not meeting criteria for cardiac testing. Abnormal noninvasive cardiac testing results did not alter medication recommendations and only resulted in coronary revascularization in 0.6% of patients. Only 3% of patients with abnormal noninvasive cardiac testing results had major cardiac events. Patients with abnormal cardiac test results were more likely to have recommendations for perioperative beta-blockade (P <.01). Patients aged more than 70 years (odds ratio 5.0; 95% confidence interval, 1.32-19.28) and patients undergoing hip surgery (odds ratio 7.5, 95% confidence interval, 1.02-54.55) were more likely to have major cardiac events. Major cardiac events occurred in 12% of urgent and 4% of elective procedures (P = .009). The ACC/AHA guidelines accurately predict cardiac risk in orthopedic surgery. Abnormal noninvasive cardiac test results rarely affected preoperative recommendations, but improved compliance with beta-blocker therapy. Advanced age, urgent procedures, and hip surgery were associated with increased risk of major cardiac events.
    The American journal of medicine 02/2007; 120(2):185.e1-6. · 5.30 Impact Factor
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    Patrick J Devine, Daniel W Carlson, Allen J Taylor
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    ABSTRACT: Carotid intima-media thickness (CIMT) testing is recognized as a valid method for the noninvasive assessment of atherosclerosis. In addition to its association with known cardiovascular risk factors and both prevalent and incident coronary heart disease, the rate of CIMT progression is directly related to the risk for future cardiovascular events. Subsequently, CIMT has been a valuable research tool in clinical trials in the assessment of therapeutic agents directed against atherosclerosis. An overview of CIMT testing including its precise measurement, establishment as a surrogate for atherosclerosis by epidemiologic trials, role in clinical trials, and potential applications in both primary and secondary coronary heart disease prevention is presented.
    Journal of Nuclear Cardiology 10/2006; 13(5):710-8. · 2.85 Impact Factor