Internet-based crowdsourcing and research ethics: the case for IRB review.

The recent success of Foldit in determining the structure of the Mason-Pfizer monkey virus (M-PMV) retroviral protease is suggestive of the power-solving potential of internet-facilitated game-like crowdsourcing. This research model is highly novel, however, and thus, deserves careful consideration of potential ethical issues. In this paper, we will demonstrate that the crowdsourcing model of research has the potential to cause harm to participants, manipulates the participant into continued participation, and uses participants as experimental subjects. We conclude that protocols relying on this model require institutional review board (IRB) scrutiny.

Rivaroxaban vs. warfarin for stroke prevention in patients with nonvalvular atrial fibrillation.

Patients with nonvalvular atrial fibrillation and a CHADS2 score of 2 points or more should be placed on warfarin anticoagulation. If they do not meet the CHADS2 criteria for warfarin, then they should receive therapy with aspirin. If a patient's condition is well-controlled on warfarin, this study does not support transitioning him or her to rivaroxaban, the more expensive alternative. Home monitoring of INR should be considered for patients who are capable and motivated to perform self-monitoring. Rivaroxaban has no reversal agent and has significant drug interactions (P-glycoprotein inducers and CYP3A4 inhibitors increase the risk of bleeding; P-glycoprotein inducers reduce effectiveness).

Artificial intelligence and machine learning in emergency medicine: a narrative review.

AIM: The emergence and evolution of artificial intelligence (AI) has generated increasing interest in machine learning applications for health care. Specifically, researchers are grasping the potential of machine learning solutions to enhance the quality of care in emergency medicine. METHODS: We undertook a narrative review of published works on machine learning applications in emergency medicine and provide a synopsis of recent developments. RESULTS: This review describes fundamental concepts of machine learning and presents clinical applications for triage, risk stratification specific to disease, medical imaging, and emergency department operations. Additionally, we consider how machine learning models could contribute to the improvement of causal inference in medicine, and to conclude, we discuss barriers to safe implementation of AI. CONCLUSION: We intend that this review serves as an introduction to AI and machine learning in emergency medicine.

Interventions for rosacea.

BACKGROUND: Rosacea is a common chronic skin condition affecting the face, characterised by flushing, redness, pimples, pustules, and dilated blood vessels. The eyes are often involved and thickening of the skin with enlargement (phymas), especially of the nose, can occur in some patients. A range of treatment options are available but it is unclear which are the most effective. OBJECTIVES: To assess the evidence for the efficacy and safety of treatments for rosacea. SEARCH STRATEGY: In February 2011 we updated our searches of the Cochrane Skin Group Specialised Register, the Cochrane Central Register of Controlled Trials (Clinical Trials) in The Cochrane Library, MEDLINE, EMBASE, Science Citation Index, and Ongoing Trials Registers. SELECTION CRITERIA: Randomised controlled trials in people with moderate to severe rosacea. DATA COLLECTION AND ANALYSIS: Study selection, data extraction, assessment of risk of bias, and analyses were carried out by two independent review authors. MAIN RESULTS: Fifty-eight trials, including 27 from the original review, comprising 6633 participants were included in this updated review. Interventions included topical metronidazole, oral antibiotics, topical azelaic cream or gel, topical benzoyl peroxide and/or combined with topical antibiotics, sulphacetamide/sulphur, and others. Only two studies assessed our primary outcome 'quality of life'.Pooled data from physician assessments in three trials provided some evidence that metronidazole was more effective compared to placebo (RR 1.95, 95% CI 1.48 to 2.56). Three trials provided data, based on participants' assessments, illustrating azelaic acid was more effective than placebo (RR 1.52, 95% CI 1.32 to 1.76).Physician-based assessments in two trials indicated that doxycycline appeared to be significantly more effective than placebo (RR 1.59, 95% CI 1.02 to 2.47 and RR 2.37, 95% CI 1.12 to 4.99). There was no statistically significant difference in effectiveness between 100 mg and 40 mg doses of doxycycline, but there was evidence of less adverse effects with the lower dose (RR 0.25, 95% CI 0.11 to 0.54).One study reported that cyclosporine ophthalmic emulsion was significantly more effective than artificial tears for treating ocular rosacea (for all outcomes). AUTHORS' CONCLUSIONS: Although the majority of included studies were assessed as being at high or unclear risk of bias there was some evidence to support the effectiveness of topical metronidazole, azelaic acid, and doxycycline (40 mg) in the treatment of moderate to severe rosacea, and cyclosporine 0.5% ophthalmic emulsion for ocular rosacea. Further well-designed, adequately-powered randomised controlled trials are required.

Black, white or green: 'race', gender and avatars within the therapeutic space.

Personal identity is critical to provider--patient interactions. Patients and doctors tend to self-select, ideally forming therapeutic units that maximise the patients' benefit. Recently, however, 'reality' has changed. The internet and virtual worlds such as Second Life (http://www.secondlife.com/) allow models of identity and provider--patient interactions that go beyond the limits of mainstream personal identity. In this paper some of the ethical implications of virtual patient--provider interactions, especially those that have to do with personal identity, are explored.

Injury incidence and predictors on a multiday recreational bicycle tour: The Register's Annual Great Bike Ride Across Iowa, 2004 to 2008.

OBJECTIVE: The "Register's Annual Great Bike Ride Across Iowa" (RAGBRAI) is a 7-day recreational bicycle ride with more than 10,000 participants covering 500 miles. The heat and humidity of late July in Iowa, the prevalence of amateur riders, and the consumption of alcohol can combine creating the potential for a significant number of injuries. The purpose of this study is to determine the type, quantity, and severity of injuries on RAGBRAI and gather data on the factors related to these incidents. METHODS: This retrospective chart review examined ambulance "run sheets" for patients requiring transport to the hospital from the bike route between 2004 and 2008. These run sheets included name, age, chief complaint, anatomic location of injuries, medications administered, procedures performed, and a full narrative describing the initial scene, patient's account of the incident, services provided, and ongoing condition of the patient while en route to the hospital. Chi-square tests, Pearson's correlation tests, and t tests were applied to determine significant statistical outcomes. RESULTS: From 2004 to 2008, Care Ambulance Inc provided on-route medical services for 419 RAGBRAI participants. Of these participants, 190 (45.3%) required transport to a local hospital by Care Ambulance Inc. Females were more likely to require transport, as they comprised 46.3% of transported patients while only representing 35% of all RAGBRAI participants (P = .001). For men, increasing age was a significant predictor of transport, particularly males between the ages of 60 and 69 years old (P = .01). Of the 148 run sheets where mechanism of incident was documented, 114 incidents were caused by rider factors (77.0%), 29 by road factors (19.6%), and 5 by bicycle factors (3.4%). Higher heat indexes were correlated with an increased number of dehydration cases (r = 0.979, P = .02). Of participants who reported with minor injuries to a mobile first aid station and did not require transport, 90.1% had not imbibed any alcohol. Bony injuries were more common above the waistline as 39/45 (86.7%) fractures occurred to the clavicle, shoulder/proximal humerus, hand, or head. The most common bony injury each year of RAGBRAI was a clavicle fracture, which represented 44.4% of all recorded fractures from 2004 to 2008. Lacerations and abrasions were also more common above the waist, as 63.5% (127/200) of soft tissue injuries requiring treatment were either to the head or upper extremities. No specific event day showed any correlation with increased injury (P >.05). CONCLUSIONS: This study suggests that females and older males are more likely to require transport for injuries sustained on RAGBRAI, the majority of injuries occur around the head and upper extremities, dehydration case load is correlated with heat index, and that incidents are usually caused by rider factors. This research could be used by multiday recreational bicycle tour organizers to continue educating riders on riding carelessness and etiquette and prepare medical services for certain quantities and types of injuries.

Answering clinical questions in the ED.

OBJECTIVES: The objective of the study was to determine how many patient-related questions emergency medicine physicians have and how they answer them at the point of care. METHODS: We conducted an observational study of 26 physicians at 2 institutions. All physicians were followed for at least 2 shifts. The number and type of questions were recorded. The percentage answered, resources used, and barriers to answering questions were also recorded. RESULTS: Physicians had 235 questions or approximately 5 questions per 8-hour shift . They attempted to answer 81% of them and were successful 87% of the time. The 2 most commonly used information sources were drug information resources (Personal digital assistant [PDA], pocket pharmacopeia [37% of the time]) followed by electronic resources (Google, UpToDate [29% of the time]). The most common reason for not pursuing a question was lack of time and distractions or interruptions, followed by a belief that an answer would not be found. When an answer was not found to a pursued question, non-emergency department physicians were the most common resource consulted (28%). CONCLUSIONS: Emergency department physicians in this study pursued and found answers for most questions posed at the point of care. Rapid access to electronic resources and drug-prescribing references were critical for answering questions at the point of care.