An Outbreak of Covid-19 on an Aircraft Carrier.

BACKGROUND: An outbreak of coronavirus disease 2019 (Covid-19) occurred on the U.S.S. Theodore Roosevelt, a nuclear-powered aircraft carrier with a crew of 4779 personnel. METHODS: We obtained clinical and demographic data for all crew members, including results of testing by real-time reverse-transcriptase polymerase chain reaction (rRT-PCR). All crew members were followed up for a minimum of 10 weeks, regardless of test results or the absence of symptoms. RESULTS: The crew was predominantly young (mean age, 27 years) and was in general good health, meeting U.S. Navy standards for sea duty. Over the course of the outbreak, 1271 crew members (26.6% of the crew) tested positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection by rRT-PCR testing, and more than 1000 infections were identified within 5 weeks after the first laboratory-confirmed infection. An additional 60 crew members had suspected Covid-19 (i.e., illness that met Council of State and Territorial Epidemiologists clinical criteria for Covid-19 without a positive test result). Among the crew members with laboratory-confirmed infection, 76.9% (978 of 1271) had no symptoms at the time that they tested positive and 55.0% had symptoms develop at any time during the clinical course. Among the 1331 crew members with suspected or confirmed Covid-19, 23 (1.7%) were hospitalized, 4 (0.3%) received intensive care, and 1 died. Crew members who worked in confined spaces appeared more likely to become infected. CONCLUSIONS: SARS-CoV-2 spread quickly among the crew of the U.S.S. Theodore Roosevelt. Transmission was facilitated by close-quarters conditions and by asymptomatic and presymptomatic infected crew members. Nearly half of those who tested positive for the virus never had symptoms.

SARS-CoV-2 Infections and Serologic Responses from a Sample of U.S. Navy Service Members - USS Theodore Roosevelt, April 2020.

Compared with the volume of data on coronavirus disease 2019 (COVID-19) outbreaks among older adults, relatively few data are available concerning COVID-19 in younger, healthy persons in the United States (1,2). In late March 2020, the aircraft carrier USS Theodore Roosevelt arrived at port in Guam after numerous U.S. service members onboard developed COVID-19. In April, the U.S. Navy and CDC investigated this outbreak, and the demographic, epidemiologic, and laboratory findings among a convenience sample of 382 service members serving aboard the aircraft carrier are reported in this study. The outbreak was characterized by widespread transmission with relatively mild symptoms and asymptomatic infection among this sample of mostly young, healthy adults with close, congregate exposures. Service members who reported taking preventive measures had a lower infection rate than did those who did not report taking these measures (e.g., wearing a face covering, 55.8% versus 80.8%; avoiding common areas, 53.8% versus 67.5%; and observing social distancing, 54.7% versus 70.0%, respectively). The presence of neutralizing antibodies, which represent antibodies that inhibit SARS-CoV-2, among the majority (59.2%) of those with antibody responses is a promising indicator of at least short-term immunity. This report improves the understanding of COVID-19 in the U.S. military and among young adults in congregate settings and reinforces the importance of preventive measures to lower risk for infection in similar environments.

The Highly Reliable, Patient-Centered Sports Medicine Practice.

Patient-centered care is safe and eliminates preventable patient harm. Sports medicine teams that understand and apply the principles of high reliability, as demonstrated by high-performing communities in the US Navy, will provide safer, higher-quality care. Sustaining high-reliability performance is challenging. Leadership is essential to creating an accountable but psychologically safe environment fostering active engagement by all team members and resisting complacency. Leaders who invest the time and energy to create the appropriate culture and who model the required behaviors enjoy an exponential return on their investment in terms of professional satisfaction and the delivery of truly patient-centered, safe, high-quality care.

Dental Patient Safety in the Military Health System: Joining Medicine in the Journey to High Reliability.

INTRODUCTION: Delivering consistent high quality care in a safe environment is the goal of the modern dental delivery system. Preventable adverse events, however, are still commonplace in dentistry. As has been demonstrated in the medical field, a concerted and persistent effort will be required to objectively understand and begin to eliminate the sources of dental error. In civilian dental practice this effort is hampered by the underreporting of patient safety events in comparison to the medical field. Patient safety reporting in the Military Health System (MHS) is robust and includes dentistry. This provides an important opportunity to analyze these data as the foundation for improvements in dental care and the elimination of preventable harm. The purpose of this article is to review MHS dental patient safety data, identify the primary sources of dental error and describe current initiatives based on the adoption of the High Reliability Organization (HRO) model of care that has been profitably embraced by the medical community. METHODS: Dental patient safety report data from the Defense Health Agency Patient Safety Analysis Center (PSAC) for the period 2013-2016 were analyzed to determine the type, incidence, contributing factors, setting and trends for dental errors occurring within the MHS. Comparison to medical data was also performed. RESULTS: From 2013 to 2016, there was a 32.1% increase in dental patient safety reports in the MHS. For this period, dentistry accounted for the highest number of Sentinel Events (SEs) compared to other clinical specialties and accounted for 32.7% of all SEs for the period. From 2013 to 2016, there was a five-fold increase in reported dental SEs. Wrong-Site Surgeries (WSS) comprised the highest proportion of SEs followed by intraoperative or immediate post-operative/post-procedure or surgery issues (63% and 14%, respectively). Within the WSS category, wrong-site anesthesia and wrong-tooth treated were the two largest sub-categories (40% and 32%, respectively). The data reviewed are not rates and do not take into account the total number of procedures performed by dentistry in comparison to medicine. Root cause analysis identified communication failures and inconsistent adoption of the Universal Protocol as the leading contributing factors for WSSs. CONCLUSION: Safety initiatives in the dental profession remain immature in comparison to the medical field and the use of an HRO framework is just beginning to emerge in dentistry. The MHS benefits from a robust dental patient safety reporting system when compared to civilian practice in the United States. Review of these data demonstrates that a high priority focus should be the elimination of WSS. Initiatives based on high reliability strategies to address this issue will be discussed. A commitment to reporting and analyzing its performance and adopting the principles and behaviors of HROs will accelerate the MHS goal of providing ever increasing safety and quality in the dental care it provides.

A Guide to Understanding Reimbursement and Value-Based Care in the Military Health System.

INTRODUCTION: With the continued rise in the cost of U.S. health care, there is an increased emphasis on value-based care methodologies. Value is defined as health outcomes achieved per dollar spent. Few studies have evaluated the role of value-based care in the Military Health System (MHS), especially in a format which physicians and providers can understand. The purpose of this article is to provide a guide to understanding current reimbursement systems and value-based care in the MHS and discuss potential strategies for improving value and military readiness. MATERIALS AND METHODS: We outlined the current value-based care methodologies in the MHS, and by using musculoskeletal care as an example, offer strategies for further improvement. RESULTS: The MHS has been a leader in the health care industry in adopting value-based care strategies. Current value-based systems in the MHS are primarily designed to incentivize process measure compliance. Initial steps toward measurement and reporting health outcomes have been made, however, with the military's use of the Integrated Resourcing and Incentive System (IRIS), National Surgical Quality Improvement Program (NSQIP) database, and the Joint Outpatient Experience Survey (JOES). CONCLUSION: As this article will describe, universal reporting of health outcomes, adoption of integrated practice units, and a focus on determining outcomes of illness over the entire care cycle offer a significant opportunity to accelerate the MHS journey to providing true value-based care. The universal measurement and systematic improvement of outcomes based on this measurement will contribute to military medical readiness and warfighter effectiveness.

Orthopedic manifestations and management of patients with von Willebrand disease.

Von Willebrand Disease is the most common inherited bleeding disorder and can present challenges to orthopedic surgeons in managing perioperative bleeding and treating orthopedic problems that manifest as a result of the disease. Appropriate history taking is essential to identify these patients prior to surgery. The most effective management of von Willebrand disease will be achieved with close consultation between the surgeon, anesthesiologist, internist or pediatrician, hematologist, and patient. With appropriate planning, these patients can undergo major orthopedic procedures safely and effectively.

Early onset idiopathic scoliosis.

Children with early onset scoliosis typically present before age 5 years. Radiographic criteria help to distinguish progressive cases from those that will spontaneously resolve. Severe cardiopulmonary problems may occur in untreated progressive cases. A comprehensive evaluation should be performed to identify commonly associated conditions, such as plagiocephaly, congenital heart disease, inguinal hernia, and hip dysplasia. For curves >20 degrees , magnetic resonance imaging of the neural axis is indicated to rule out occult central nervous system lesions. Surgical management should be considered when nonsurgical measures, including bracing and casting, fail to arrest progression. Surgical methods continue to evolve and are primarily directed at obtaining and maintaining curve correction while simultaneously preserving spinal and trunk growth.

Fixed subtalar subluxation in a pediatric patient: an unusual entity.

Atraumatic, fixed subluxation of the subtalar joint in the pediatric population has not been described. This report describes such a case in a skeletally immature boy.

The experience of the US Marine Corps' Surgical Shock Trauma Platoon with 417 operative combat casualties during a 12 month period of operation Iraqi Freedom.

BACKGROUND: The Forward Resuscitative Surgical System (FRSS) is a small, mobile trauma surgical unit designed to support modern US Marine Corps combat operations. The experience of two co-located FRSS teams during 1 year of service in Operation Iraqi Freedom is reviewed to evaluate the system's efficacy. METHODS: Between March 1, 2004, and February 28, 2005, two FRSS teams and a shock trauma platoon were co-located in a unit designated the Surgical Shock Trauma Platoon (SSTP). Data concerning patient care before and during treatment at the SSTP was maintained prospectively. Prospective determination of outcomes was obtained by e-mail correspondence with surgeons caring for the patients at higher echelons. The Los Angeles County medical center (LAC) trauma registry was queried to obtain a comparable data-base with which to compare outcomes. RESULTS: During the year reviewed there were 895 trauma admissions to the SSTP. Excluding 25 patients pulseless on arrival and 291 minimally injured patients, 559 of 579 (97%) combat casualties survived; 417 casualties underwent 981 operative procedures in the two SSTP operating shelters. There were 79 operative patients with a mean injury severity score of 26 (range, 16-59) and mean revised trauma score of 6.963 (range, 4.21-7.841) who had sustained severe injuries. Ten (12.7%) of these casualties died while 43 of 337 (12.8%) deaths were seen with comparable cases treated at LAC. CONCLUSIONS: Small task-oriented surgical units are capable of providing effective trauma surgical care to combat casualties. Further experience is needed to better delineate the balance between early, forward-based surgical intervention and more prolonged initial casualty evacuation to reach more robust surgical facilities.

Tactical surgical intervention with temporary shunting of peripheral vascular trauma sustained during Operation Iraqi Freedom: one unit's experience.

BACKGROUND: Rapidly restoring perfusion to injured extremities is one of the primary missions of forward military surgical teams. The austere setting, limited resources, and grossly contaminated nature of wounds encountered complicates early definitive repair of complex combat vascular injuries. Temporary vascular shunting of these injuries in the forward area facilitates rapid restoration of perfusion while allowing for deferment of definitive repair until after transport to units with greater resources and expertise. METHODS: Standard Javid or Sundt shunts were placed to temporarily bypass complex peripheral vascular injuries encountered by a forward US Navy surgical unit during a six month interval of Operation Iraqi Freedom. Data from the time of injury through transfer out of Iraq were prospectively recorded. Each patient's subsequent course at Continental US medical centers was retrospectively reviewed once the operating surgeons had returned from deployment. RESULTS: Twenty-seven vascular shunts were used to bypass complex vascular injuries in twenty combat casualties with a mean injury severity score of 18 (range 9-34) and mean mangled extremity severity score of 9 (range 6-11). All patients survived although three (15%) ultimately required amputation for nonvascular complications. Six (22%) shunts clotted during transport but an effective perfusion window was provided even in these cases. CONCLUSION: Temporary vascular shunting appears to provide simple and effective means of restoring limb perfusion to combat casualties at the forward level.

Risk of refracture through unicameral bone cysts of the proximal femur.

The authors determined the results after traction or traction and hip spica treatment of the initial fractures through unicameral bone cysts of the proximal femur in 20 children. All of the eight displaced fractures healed, but with coxa vara and avascular necrosis in one, coxa vara in a second, and coxa breva in a third. Spontaneous healing of the cyst occurred in three of the eight children; satisfactory healing was achieved and maintained after intralesional corticosteroid injections in four of the eight children. In the remaining child with a displaced fracture, reactivation of the cyst and exercise-related pain, indicative of an incipient refracture, occurred 3 years after initial presentation. All of the 12 undisplaced fractures healed without deformity or avascular necrosis. Intralesional corticosteroids were used in all of the 12 children because none of them showed spontaneous healing of their cysts. Satisfactory radiographic healing was achieved 1 year after presentation in all of the 12 children. However, one or more refractures resulting from reactivation of the cyst occurred in 6 of the 12 children 2 to 5 years after initial presentation. The results of this study indicate that satisfactory radiographic healing needs to be achieved by the end of the first year and needs to be maintained thereafter to prevent refractures.