Nhan Van Do

The military health system's personal health record pilot with Microsoft HealthVault and Google Health

OBJECTIVE To design, build, implement, and evaluate a personal health record (PHR), tethered to the Military Health System, that leverages Microsoft® HealthVault and Google® Health infrastructure based on user preference. MATERIALS AND METHODS A pilot project was conducted in 2008-2009 at Madigan Army Medical Center in Tacoma, Washington. Our PHR was architected to a flexible platform that incorporated standards-based models of Continuity of Document and Continuity of Care Record to map Department of Defense-sourced health data, via a secure Veterans Administration data broker, to Microsoft® HealthVault and Google® Health based on user preference. The project design and implementation were guided by provider and patient advisory panels with formal user evaluation. RESULTS The pilot project included 250 beneficiary users. Approximately 73.2% of users were < 65 years of age, and 38.4% were female. Of the users, 169 (67.6%) selected Microsoft® HealthVault, and 81 (32.4%) selected Google® Health as their PHR of preference. Sample evaluation of users reflected 100% (n = 60) satisfied with convenience of record access and 91.7% (n = 55) satisfied with overall functionality of PHR. DISCUSSION Key lessons learned related to data-transfer decisions (push vs pull), purposeful delays in reporting sensitive information, understanding and mapping PHR use and clinical workflow, and decisions on information patients may choose to share with their provider. CONCLUSION Currently PHRs are being viewed as empowering tools for patient activation. Design and implementation issues (eg, technical, organizational, information security) are substantial and must be thoughtfully approached. Adopting standards into design can enhance the national goal of portability and interoperability.

Circannual pattern of hypothalamic-pituitary- thyroid (HPT) function and mood during extended antarctic residence

The seasonal variation in thyroid function and mood was examined in 10 men and two women who spent the 1997 or 1998 austral winter at McMurdo Station, Antarctica. Serum samples of TSH, free T3 and free T4 were collected each month over a 10-month period (October-August), along with responses to the Profile of Mood States (POMS) and the Center for Epidemiologic Studies - Depression (CES-D) Scale. Both TSH and mood (a summary score created from the POMS depression, anger, fatigue and confusion subscales) exhibited a circannual pattern with peaks during the months of November and July and a trough during the months of March and April. High levels of tension-anxiety and confusion were preceded by declines in free T3 and T4. However, increases in tension-anxiety and total mood disturbance also preceded a decline in free T3 levels, suggesting a feedback of mood on T3 levels. Levels of free T4 were independently associated with preceding increases in anger scores. These results support the hypothesis that the symptoms characteristic of the winter-over syndrome is a state of relative CNS hypothyroidism. This model of seasonal variation in thyroid function and mood also has implications for an understanding of potential mechanisms underlying the association between latitude and SAD or S-SAD.

Resting and exercise energy use in Antarctica: effect of 50% restriction in temperate climate energy requirements

Objective  To determine the impact of energy restriction (ER) upon the previously reported increased resting and exercise‐related oxygen utilization, reduced body temperature, increased serum TSH, and reduced serum free T3 concentrations found during Antarctic residence (AR).

Psychoneuroendocrine effects of combined thyroxine and triiodothyronine versus tyrosine during prolonged Antarctic residence

Objectives. We previously reported that cognitive function improves with thyroxine and that there is a circannual pattern to mood and human TSH during Antarctic residence. To extend these findings, we examined the effects of tyrosine and a combined levothyroxine/liothyronine supplement in euthyroid men and women who spent the austral summer (n = 43) and/or winter (n = 42) in Antarctica. Study Design. Randomized, placebo-controlled, clinical trial. Methods. Subjects were randomized to receive the following each day for 91.6 +/- 3.2 days in summer and/or 138.0 +/- 3.2 days in winter: (1) 12g tyrosine mixed in 113g applesauce; (2) 50 microg of levothyroxine and 12.5 microg of liothyronine (T4-T3 Supplement); or (3) placebo. Cognitive performance and mood were assessed using the Automatic Neuropsychological Assessment Metric - Isolated and Confined Environments. Results. With placebo in summer, mood did not change while TSH decreased by 28%; in winter, there was a 136% degradation in mood (p & 0.01) and TSH increased by 18%. With combined T4-T3 supplement, there was a 51% degradation in mood in summer compared with placebo (p & 0.05) and TSH decreased by 57%; in winter there was a 135% degradation in mood while TSH was reduced by 26% (p & 0.05). Tyrosine use in summer was associated with no change in mood and a 30% decline in TSH, while in winter there was a 47% improvement in mood and TSH decreased by 28% along with a 6% increase in fT3 (p & 0.05). Conclusions. Administration of tyrosine leads to a significant reduction in serum TSH and improvement in mood in winter compared with placebo, while the combined T4-T3 supplement leads to a worsening of mood in summer and no improvement in winter. There appears to be a seasonal influence on the psychological response to interventions and the relationship to changes in TSH reductions.

Effectiveness of the combat pelvic protection system in the prevention of genital and urinary tract injuries: An observational study.

BACKGROUND Historically, the incidence of genital and urinary tract (GU) injuries in major conflicts has been approximately 5%. To mitigate the risk of blast injury to the external genitalia, the United States and United Kingdom issued protective overgarments and undergarments to troops deployed in support of Operation Enduring Freedom. These two systems combined constitute the pelvic protection system (PPS). Our hypothesis was that PPS use is associated with a reduction of GU injuries in subjects exposed to dismounted improvised explosive device blast injuries. METHODS We identified two groups for comparison: those who were confirmed to have worn the PPS at time of injury (n = 58) and a historical control group who were confirmed as not wearing the PPS (non-PPS) (n = 61). Patients with any level of lower extremity amputation from dismounted improvised explosive device blast mechanism were included. The primary outcome measure was presence of a GU injury on admission. A univariate analysis assessing the strength of association with odds ratios and 95% confidence intervals was performed between the PPS and non-PPS groups. RESULTS Mean Injury Severity Score (ISS) was higher in the PPS versus the non-PPS group (26.1 vs. 19.3, p = 0.0012). Overall, 31% of the patients in the PPS group sustained at least one GU injury versus 62.3% in the non-PPS group. The odds ratio of sustaining a GU injury in the PPS group as compared with the PPS group is 0.28 (31% vs. 62.3%; 95 % confidence interval, 0.62–0.12; p < 0.001). The most frequent injures were open scrotal/testes wounds, followed by open penis, and open bladder/urethra injuries. CONCLUSION The use of the PPS is associated with a decreased odds ratio of GU injury. Despite a 31% absolute reduction, future work should focus on improved efficiency. LEVEL OF EVIDENCE Prognostic/epidemiologic study, level IV; therapeutic study, level V.

Trauma Care at a Multinational United Kingdom-Led Role 3 Combat Hospital: Resuscitation Outcomes From a Multidisciplinary Approach

UNLABELLED Recent conflicts have led significant advancements in casualty care. Facilities serving combat wounded operate in challenging environments. Our purpose is to describe the multidisciplinary resuscitation algorithm utilized at a United Kingdom-led, Role 3 multinational treatment facility in Afghanistan focusing on injury severity and in-hospital mortality. METHODS Data were extracted from our prospectively collected trauma registry on military members wounded in action. RESULTS From November 1, 2009 to September 30, 2011, there were 3483 military trauma admissions. Common mechanisms of injury were improvised explosive devices (48%), followed by gunshot wounds (29%). Most patients (83.1%) had an Injury Severity Score (ISS) <15. For patients with complete ISS data, 8.4% had massive transfusion and 6.1% had an initial base deficit >5. Patients admitted with signs of life had a died of wounds rate of 1.8% with an average 1.2 day hospital stay. The mortality rate for patients undergoing massive transfusion was 4.8%, and for patients with a base deficit >5, mortality was 12.3%. Severely injured patients (ISS > 24) had a mortality rate of 16.5%. CONCLUSION A systematic, multidisciplinary approach to trauma is associated with low in-hospital mortality. The outcomes in this study serve as a measure for future care in Role 3 facilities.

A randomized placebo-controlled clinical trial of the effectiveness of thyroxine and triiodothyronine and short-term exposure to bright light in prevention of decrements in cognitive performance and mood during prolonged Antarctic residence

Objective  We examined the effects of a combined levothyroxine/liothyronine supplement and exposure to bright (10,000 lux) light in euthyroid men and women who spent the austral summer (n = 43) and/or winter (n = 42) in Antarctica.