Health department collaboration with emergency departments as a model for public health programs among at-risk populations

"There hasn't been a push to identify patients in the emergency department"-Staff perspectives on automated identification of candidates for pre-exposure prophylaxis (PrEP): A qualitative study

Automated algorithms for identifying potential pre-exposure prophylaxis (PrEP) candidates are effective among men, yet often fail to detect cisgender women (hereafter referred to as "women") who would most benefit from PrEP. The emergency department (ED) is an opportune setting for implementing automated identification of PrEP candidates, but there are logistical and practical challenges at the individual, provider, and system level. In this study, we aimed to understand existing processes for identifying PrEP candidates and to explore determinants for incorporating automated identification of PrEP candidates within the ED, with specific considerations for ciswomen, through a focus group and individual interviews with ED staff. From May to July 2021, we conducted semi-structured qualitative interviews with 4 physicians and a focus group with 4 patient advocates working in a high-volume ED in Chicago. Transcripts were coded using Dedoose software and analyzed for common themes. In our exploratory study, we found three major themes: 1) Limited PrEP knowledge among ED staff, particularly regarding its use in women; 2) The ED does not have a standardized process for assessing HIV risk; and 3) Perspectives on and barriers/facilitators to utilizing an automated algorithm for identifying ideal PrEP candidates. Overall, ED staff had minimal understanding of the need for PrEP among women. However, participants recognized the utility of an electronic medical record (EMR)-based automated algorithm to identify PrEP candidates in the ED. Facilitators to an automated algorithm included organizational support/staff buy-in, patient trust, and dedicated support staff for follow-up/referral to PrEP care. Barriers reported by participants included time constraints, hesitancy among providers to prescribe PrEP due to follow-up concerns, and potential biases or oversight resulting from missing or inaccurate information within the EMR. Further research is needed to determine the feasibility and acceptability of an EMR-based predictive HIV risk algorithm within the ED setting.

Opt-out testing for hepatitis B and C infections in adults attending the emergency department of a large London teaching hospital

BACKGROUND

The National Health Service (NHS) in England commissioned opt-out testing in London Emergency Departments (ED) in April 2022 to allow early identification and management of hepatitis B (HBV) and hepatitis C virus (HCV) infection in patients unaware of their infection status.

METHODS

All adults over the age of 16 undergoing blood tests in the ED at the Royal Free Hospital were tested for HBV surface antigen and anti-HCV IgG unless they opted out. Data was collected between the 12th of April and 22nd of August 2022.

OUTCOME

Of 11,215 patients tested for HCV, 164 patients were found to be anti-HCV IgG positive, giving a seroprevalence rate of 1.46 %. 52 of the anti-HCV IgG positive patients did not have any previous HCV serology result. 23 of the anti-HCV IgG positive patients were also HCV RNA positive giving an RNA seroprevalence of 0.21 %, and 17 of those were new diagnoses of HCV viraemia. For HBV testing, 82 (0.73 %) out of 11,192 patients tested were found to be HBsAg positive, including one patient who presented acutely with a positive HBV core IgM. 39 of the HBsAg positive patients were previously unknown to us; of these, 9 had an HBV viral load of more than 2000 IU/mL, including 3 patients with positive HBV e antigen and one patient with hepatitis D virus co-infection.

CONCLUSION

Opt-out screening of HBV and HCV in ED is effective at identifying patients with previously undiagnosed viral hepatitis infection and providing an opportunity to engage them in specialist care.

Substance Use and Mental Health Screening Within an Emergency Department-Based HIV Screening Program: Outcomes From 1 Year of Implementation

INTRODUCTION

The emergency department (ED) may be an optimal setting to screen for substance use disorders (SUDs) and co-occurring psychiatric disorders (CODs). We report on the frequency of problematic substance use and comorbid elevated mental health symptoms detected during a 1-year implementation period of an ED-based SUD/COD screening approach within an established ED HIV screening program.

METHODS

Patients (N = 1,924) were approached by dedicated HIV screening staff in an urban, Midwestern ED. Patients first completed measures assessing problematic alcohol (Alcohol Use Disorder Identification Test-Concise [AUDIT-C]) and substance use across 10 categories of substances (National Institute on Drug Abuse-Modified Alcohol, Smoking, and Substance Involvement Screening Test [NIDA-Modified ASSIST]). Patients with positive alcohol and/or substance use screens completed measures assessing symptoms of depression (Patient Health Questionnaire-9 [PHQ-9]), anxiety (Generalized Anxiety Disorder-7 [GAD-7]), and post-traumatic stress disorder (PTSD) (PTSD Checklist-Civilian [PCL-C]).

RESULTS

Patients were predominantly male (60.3%) with a mean age of 38.1 years (SD = 13.0); most identified as White (50.8%) or Black (44.8%). A majority (58.5%) had a positive screen for problematic alcohol and/or other substance use. Of those with a positive substance use screen (n = 1,126), 47.0% had a positive screen on one or more of the mental health measures with 32.1% endorsing elevated depressive symptoms, 29.6% endorsing elevated PTSD-related symptoms, and 28.5% endorsing elevated anxiety symptoms.

CONCLUSIONS

Among those receiving ED HIV screening, a majority endorsed problematic alcohol and/or other substance use and co-occurring elevated mental health symptoms. Substance use and mental health screening programs that can be integrated within other ED preventive services may enhance the identification of individuals in need of further assessment, referral, or linkage to substance use treatment services.

Rapid evidence review: Policy actions for the integration of public health and health care in the United States

Objective

To identify policy actions that may improve the interface of public health and health care in the United States.

Methods

A rapid review of publicly-available documents informing the integration of public health and health care, and case examples reporting objective measures of success, with abstraction of policy actions, related considerations, and outcomes.

Results

Across 109 documents, there were a number of recurrent themes related to policy actions and considerations to facilitate integration during peace time and during public health emergencies. The themes could be grouped into the need for adequate and dedicated funding; mandates and shared governance for integration; joint leadership that has the authority/ability to mobilize shared assets; adequately staffed and skilled workforces in both sectors with mutual awareness of shared functions; shared health information systems with modernized data and IT capabilities for both data collection and dissemination of information; engagement with multiple stakeholders in the community to be maximally inclusive; and robust communication strategies and training across partners and with the public.

Conclusion

While the evidence does not support a hierarchy of policies on strengthening the interface of public health and health care, recurrent policy themes can inform where to focus efforts.

An electronic health record alert increases human immunodeficiency virus screening and case identification in a high-risk emergency department population

Increased screening for HIV is required to reduce mortality and transmission. Patients with risk factors for HIV may lack access to routine care and emergency departments are an important site for screening and linkage to care. We implemented an electronic health record algorithm to identify patients meeting criteria for HIV screening. Compared to unstructured clinical judgement, the EHR alert increased the number of patients screened and case identification.

COVID-19 and beyond: Lessons learned from emergency department HIV screening for population-based screening in healthcare settings

Emergency departments (EDs) have played a major role in the science and practice of HIV population screening. After decades of experience, EDs have demonstrated the capacity to provide testing and linkage to care to large volumes of patients, particularly those who do not otherwise engage the healthcare system. Efforts to expand ED HIV screening in the United States have been accelerated by a collaborative national network of emergency physicians and other stakeholders called EMTIDE (Emergency Medicine Transmissible Infectious Diseases and Epidemics). As the COVID-19 pandemic evolves, EDs nationwide are being tasked with diagnosing and managing COVID-19 in a myriad of capacities, adopting varied approaches based in part on know-how, local disease trends, and the supply chain. The objective of this article is to broadly summarize the lessons learned from decades of ED HIV screening and provide guidance for many analogous issues and challenges in population screening for COVID-19. Over time, and with the accumulated experience from other epidemics, ED screening should develop into an overarching discipline in which the disease in question may vary, but the efficiency of response is increased by prior knowledge and understanding.

Seroprevalence of HCV, HBV and HIV in two inner-city London emergency departments

SUMMARY

In this paper we build on work investigating the feasibility of human immunodeficiency virus (HIV) testing in emergency departments (EDs), estimating the prevalence of hepatitis B, C and HIV infections among persons attending two inner-London EDs, identifying factors associated with testing positive in an ED. We also undertook molecular characterisation to look at the diversity of the viruses circulating in these individuals, and the presence of clinically significant mutations which impact on treatment and control.Blood-borne virus (BBV) testing in non-traditional settings is feasible, with emergency departments (ED) potentially effective at reaching vulnerable and underserved populations. We investigated the feasibility of BBV testing within two inner-London EDs. Residual samples from biochemistry for adults (⩾18 years) attending The Royal Free London Hospital (RFLH) or the University College London Hospital (UCLH) ED between January and June 2015 were tested for human immunodeficiency virus (HIV)Ag/Ab, anti-hepatitis C (HCV) and HBsAg. PCR and sequence analysis were conducted on reactive samples. Sero-prevalence among persons attending RFH and UCLH with residual samples (1287 and 1546), respectively, were 1.1% and 1.0% for HBsAg, 1.6% and 2.3% for anti-HCV, 0.9% and 1.6% for HCV RNA, and 1.3% and 2.2% for HIV. For RFH, HBsAg positivity was more likely among persons of black vs. white ethnicity (odds ratio 9.08; 95% confidence interval 2.72-30), with anti-HCV positivity less likely among females (0.15, 95% CI 0.04-0.50). For UCLH, HBsAg positivity was more likely among non-white ethnicity (13.34, 95% CI 2.20-80.86 (Asian); 8.03, 95% CI 1.12-57.61 (black); and 8.11, 95% CI 1.13-58.18 (other/mixed)). Anti-HCV positivity was more likely among 36-55 year olds vs. ⩾56 years (7.69, 95% CI 2.24-26.41), and less likely among females (0.24, 95% CI 0.09-0.65). Persons positive for HIV-markers were more likely to be of black vs. white ethnicity (4.51, 95% CI 1.63-12.45), and less likely to have one ED attendance (0.39, 95% CI 0.17-0.88), or female (0.12, 95% CI 0.04-0.42). These results indicate that BBV-testing in EDs is feasible, providing a basis for further studies to explore provider and patient acceptability, referral into care and cost-effectiveness.

Pharmacokinetic properties of intranasal and injectable formulations of naloxone for community use: a systematic review

Aim: To assess the pharmacokinetic properties of community-use formulations of naloxone for emergency treatment of opioid overdose. Methods: Systematic literature review based on searches of established databases and congress archives. Results: Seven studies met inclusion criteria: two of US FDA-approved intramuscular (im.)/subcutaneous (sc.) auto-injectors, one of an FDA-approved intranasal spray, two of unapproved intranasal kits (syringe with atomizer attachment) and two of intranasal products in development. Conclusion: The pharmacokinetics of im./sc. auto-injector 2 mg and approved intranasal spray (2 and 4 mg) demonstrated rapid uptake and naloxone exposure exceeding that of the historic benchmark (0.4 mg im.), indicating that naloxone exposure was adequate for reversal of opioid overdose.

Which Patients in the Emergency Department Should Receive Preexposure Prophylaxis? Implementation of a Predictive Analytics Approach

Emergency Departments (EDs) have the potential to play a crucial role in HIV prevention by identifying and linking high-risk HIV-negative clients to preexposure prophylaxis (PrEP) care, but it is difficult to perform HIV risk assessment for all ED patients. We aimed to develop and implement an electronic risk score to identify ED patients who are potential candidates for PrEP. Using electronic medical record (EMR) data, we used logistic regression to model the outcome of PrEP eligibility. We converted the model into an electronic risk score and incorporated it into the EMR. The risk score is automatically calculated at triage. For patients whose risk score is above a given threshold, an automated electronic alert is sent to an HIV prevention counselor who performs real time HIV prevention counseling, risk assessment, and PrEP linkage as appropriate. The electronic risk score includes the following EMR variables: age, gender, gender of sexual partner, chief complaint, and positive test for sexually transmitted infection in the prior 6 months. A risk score ≥21 has specificity of 80.6% and sensitivity of 50%. In the first 5.5 months of implementation, the alert fired for 180 patients, 34.4% (62/180) of whom were women. Of the 51 patients who completed risk assessment, 68.6% (35/51) were interested in PrEP, 17.6% (9/51) scheduled a PrEP appointment, and 7.8% (4/51) successfully initiated PrEP. The measured number of successful PrEP initiations is likely an underestimate, as it does include patients who initiated PrEP with outside providers or referred acquaintances for PrEP care.

Harnessing the Power of the Electronic Medical Record to Facilitate an Opt-Out HIV Screening Program in an Urban Academic Emergency Department

Emergency Departments (EDs) are important settings for routine HIV screening because they are safety nets for populations with limited access to primary care and high risk for HIV infection. However, EDs rarely perform routine HIV screening due to logistical barriers. An electronic medical record (EMR)-driven routine opt-out HIV screening program was implemented in an urban academic ED and led to rapid scale-up of screening volume and detection of unknown HIV infection. The streamlined tool, requiring 4 mouse clicks, automates screening for eligibility, facilitates documentation of consent and orders the HIV test. HIV screening increased to a monthly average of 550 tests compared to an average of 7 tests prior to program implementation. Similar EMR innovations can be leveraged in a variety of other clinical settings and for testing of other diseases to improve clinical flow and outcomes.

Patient and System Factors Related to Missed Opportunities for Screening in an Electronic Medical Record-driven, Opt-out HIV Screening Program in the Emergency Department

OBJECTIVE

Emergency departments (EDs) have implemented HIV screening using a variety of strategies. This study investigates how specific patient and health system factors in the ED impact who is and is not screened in a combined targeted and nontargeted, electronic medical record (EMR)-driven, opt-out, HIV screening program.

METHODS

This was a retrospective, cross-sectional study of ED visits where patients were determined eligible for HIV screening by an EMR algorithm between November 18, 2014, and July 15, 2015. The HIV screening workflow included three sequential events, all of which were required to get screened for HIV at the ED visit. The events were having a blood draw, being informed of the HIV screening policy by an ED nurse at the point of blood draw, and the patient consenting to the HIV test. Each event represented a dichotomous outcome and its association with six patient factors (age, sex, race/ethnicity, marital status, preferred language, and Emergency Severity Index [ESI]) and two health system factors (ED crowding and program phase) was investigated using multivariable modeling.

RESULTS

A total of 15,918 ED visits were analyzed. Blood was drawn in 8,388 of 15,918 visits (53%). Of 8,388 visits where blood was drawn, there were 5,947 (71%) visits where ED nurses documented informing patients of the HIV screening policy. Of those visits, patient consent to the HIV test was documented at 3,815 (64%) visits. Patients between 13 and 19 years of age were significantly less likely to have blood drawn, to be informed of the screening policy, and to consent to the HIV test compared to other age groups. Both ED crowding and a patient's ESI were associated with decreased odds of having a blood draw and being informed of HIV screening by an ED nurse, but showed no association with patients consenting to the HIV test.

CONCLUSION

Many patients, particularly adolescents and young adults, are missed in ED HIV screening programs that require blood draw and depend on providers to obtain consent for testing. To ensure that these patients are reached, future ED screening programs should strive to develop innovative workflows that allow for blood draws for HIV screening only and streamline the processes of obtaining informed consent and ordering tests for all eligible patients.

High Feasibility of Empiric HIV Treatment for Patients With Suspected Acute HIV in an Emergency Department

Earlier intervention in acute HIV infection limits HIV reservoirs and may decrease HIV transmission. We developed criteria for empiric antiretroviral therapy (ART) in an emergency department (ED) routine HIV screening program. We assessed the feasibility and willingness of patients with suspected acute HIV infection in the ED to begin ART. A suspected acute HIV infection was defined as a positive HIV antigen antibody combination immunoassay with pending HIV-antibody differentiation test results and HIV RNA viral load. During the study period, there were 16 confirmed cases of acute HIV infection: 11 met our criteria for empiric ART and agreed to treatment, 10 were prescribed ART, and 1 left the ED against medical advice without a prescription for ART. Eight patients completed at least one follow-up visit. Empiric HIV treatment in an ED is feasible, well received by patients, and offers a unique entry point into the HIV care continuum.

Assessment of Nurse Perspectives on an Emergency Department-Based Routine Opt-Out HIV Screening Program

Routine opt-out HIV screening is recommended for everyone between 13 and 64 years of age. An urban, academic emergency department implemented a nurse-driven routine opt-out HIV screening program. The aim of our study was to assess program uptake and opportunities to improve the program from the perspectives of emergency nurses. Emergency nurses completed a brief prediscussion questionnaire and then participated in a focus group or semi-structured one-on-one interview to elicit feedback on the routine opt-out HIV screening program. All 16 participants felt adequately prepared for the screening program. Several themes emerged from the discussions, including challenges of specific patient characteristics and overall nurse and patient support for the program. One thread across themes was the importance of good language and communication skills in such programs. While there are opportunities to improve nurse-driven routine opt-out HIV testing programs in emergency settings, this program was found to be accepted by emergency nurses.

Prevalence of undiagnosed acute and chronic HIV in a lower-prevalence urban emergency department

OBJECTIVES

We estimated the seroprevalence of both acute and chronic HIV infection by using a random sample of emergency department (ED) patients from a region of the United States with low-to-moderate HIV prevalence.

METHODS

This cross-sectional seroprevalence study consecutively enrolled patients aged 18 to 64 years within randomly selected sampling blocks in a Midwestern urban ED in a region of lower HIV prevalence in 2008 to 2009. Participants were compensated for providing a blood sample and health information. After de-identification, we assayed samples for HIV antibody and nucleic acid.

RESULTS

There were 926 participants who consented and enrolled. Overall, prevalence of undiagnosed HIV was 0.76% (95% confidence interval [CI] = 0.30%, 1.56%). Three participants (0.32%; 95% CI = 0.09%, 0.86%) were nucleic acid-positive but antibody-negative and 4 (0.43%; 95% CI = 0.15%, 1.02%) were antibody-positive.

CONCLUSIONS

Even when the absolute prevalence is low, a considerable proportion of undetected HIV cases in an ED population are acute. Identification of acute HIV in ED settings should receive increased priority.

Randomized comparison of universal and targeted HIV screening in the emergency department

OBJECTIVE

Universal HIV screening is recommended but challenging to implement. Selectively targeting those at risk is thought to miss cases, but previous studies are limited by narrow risk criteria, incomplete implementation, and absence of direct comparisons. We hypothesized that targeted HIV screening, when fully implemented and using maximally broad risk criteria, could detect nearly as many cases as universal screening with many fewer tests.

METHODS

This single-center cluster-randomized trial compared universal and targeted patient selection for HIV screening in a lower prevalence urban emergency department. Patients were excluded for age (<18 and >64 years), known HIV infection, or previous approach for HIV testing that day. Targeted screening was offered for any risk indicator identified from charts, staff referral, or self-disclosure. Universal screening was offered regardless of risk. Baseline seroprevalence was estimated from consecutive deidentified blood samples.

RESULTS

There were 9572 eligible visits during which the patient was approached. For universal screening, 40.8% (1915/4692) consented with 6 being newly diagnosed [0.31%, 95% confidence interval (CI): 0.13% to 0.65%]. For targeted screening, 37% (1813/4880) had no testing indication. Of the 3067 remaining, 47.4% (1454) consented with 3 being newly diagnosed (0.22%, 95% CI: 0.06% to 0.55%). Estimated seroprevalence was 0.36% (95% CI: 0.16% to 0.70%). Targeted screening had a higher proportion consenting (47.4% vs. 40.8%, P < 0.002), but a lower proportion of ED encounters with testing (29.7% vs. 40.7%, P < 0.002).

CONCLUSIONS

Targeted screening, even when fully implemented with maximally permissive selection, offered no important increase in positivity rate or decrease in tests performed. Universal screening diagnosed more cases, because more were tested, despite a modestly lower consent rate.

Addressing unmet need for HIV testing in emergency care settings: a role for computer-facilitated rapid HIV testing?

HIV testing in emergency departments (EDs) remains underutilized. The authors evaluated a computer tool to facilitate rapid HIV testing in an urban ED. Randomly assigned nonacute adult ED patients were randomly assigned to a computer tool (CARE) and rapid HIV testing before a standard visit (n = 258) or to a standard visit (n = 259) with chart access. The authors assessed intervention acceptability and compared noted HIV risks. Participants were 56% nonWhite and 58% male; median age was 37 years. In the CARE arm, nearly all (251/258) of the patients completed the session and received HIV results; four declined to consent to the test. HIV risks were reported by 54% of users; one participant was confirmed HIV-positive, and two were confirmed false-positive (seroprevalence 0.4%, 95% CI [0.01, 2.2]). Half (55%) of the patients preferred computerized rather than face-to-face counseling for future HIV testing. In the standard arm, one HIV test and two referrals for testing occurred. Computer-facilitated HIV testing appears acceptable to ED patients. Future research should assess cost-effectiveness compared with staff-delivered approaches.

What do patients think about HIV mass screening in France? A qualitative study

Background

Since 2009, HIV mass screening of the 15–70-year-old general population in low-risk situations has been recommended in France. This, not yet implemented, untargeted screening would be cost-effective with a positive impact on public health. No previous studies had interrogated primary care patients about it. This study aimed at exploring perceptions of patients attending general practitioner’s on HIV mass screening and at identifying barriers to its implementation.

Methods

We conducted a qualitative study through semi-structured individual interviews. Participants were recruited according to age, gender and location of their physician’s practice. Data analysis was based on triangulation by two researchers.

Results

Twenty-four interviews were necessary to obtain data saturation. HIV transmission was mostly associated with sexual intercourse; main barriers stemming from the screening were related to sexuality, often seen as questioning spouse’s faithfulness. It could interfere with religiosity, implying an upsetting perception of sexuality among the elderly. Patients’ beliefs and perceptions regarding HIV/AIDS, the fear to be screened and difficulties to talk about sexuality were other barriers.

Conclusion

To our knowledge, no studies had previously interrogated primary care patients about barriers to HIV mass screening in France. Although relevance of this untargeted screening is debated in France, our results could be helpful to a better understanding of patients’ attitudes toward this and to an outstanding contribution to reduce the number of new cases of HIV contamination.

Interrelationship of alcohol misuse, HIV sexual risk and HIV screening uptake among emergency department patients

Background

Emergency department (ED) patients comprise a high-risk population for alcohol misuse and sexual risk for HIV. In order to design future interventions to increase HIV screening uptake, we examined the interrelationship among alcohol misuse, sexual risk for HIV and HIV screening uptake among these patients.

Methods

A random sample of 18-64-year-old English- or Spanish-speaking patients at two EDs during July-August 2009 completed a self-administered questionnaire about their alcohol use using the Alcohol Use Questionnaire, the Alcohol Use Disorders Identification Test (AUDIT), and the HIV Sexual Risk Questionnaire. Study participants were offered a rapid HIV test after completing the questionnaires. Binging (≥ five drinks/occasion for men, ≥ four drinks for women) was assessed and sex-specific alcohol misuse severity levels (low-risk, harmful, hazardous, dependence) were calculated using AUDIT scores. Analyses were limited to participants who had sexual intercourse in the past 12 months. Multivariable logistic regression was used to assess the associations between HIV screening uptake and (1) alcohol misuse, (2) sexual risk for HIV, and (3) the intersection of HIV sexual risk and alcohol misuse. Adjusted odds ratios (AORs) with 95% confidence intervals (CIs) were estimated. All models were adjusted for patient demographic characteristics and separate models for men and women were constructed.

Results

Of 524 participants (55.0% female), 58.4% identified as white, non-Hispanic, and 72% reported previous HIV testing. Approximately 75% of participants reported drinking alcohol within the past 30 days and 74.5% of men and 59.6% of women reported binge drinking. A relationship was found between reported sexual risk for HIV and alcohol use among men (AOR 3.31 [CI 1.51-7.24]) and women (AOR 2.78 [CI 1.48-5.23]). Women who reported binge drinking were more likely to have higher reported sexual risk for HIV (AOR 2.55 [CI 1.40-4.64]) compared to women who do not report binge drinking. HIV screening uptake was not higher among those with greater alcohol misuse and sexual risk among men or women.

Conclusions

The apparent disconnection between HIV screening uptake and alcohol misuse and sexual risk for HIV among ED patients in this study is concerning. Brief interventions emphasizing these associations should be evaluated to reduce alcohol misuse and sexual risk and increase the uptake of ED HIV screening.

Is an emergency department encounter for a motor vehicle collision truly a teachable moment?

BACKGROUND

Some have suggested that a pediatric emergency department (PED) visit for an injury represents a "teachable moment." Our aim was to determine if a motor vehicle collision (MVC) instigates greater change in booster seat use compared with children presenting for non-injury-related complaints.

METHODS

A prospective pilot study of children 4 years to 8 years who never used a booster seat and were in a minor MVC were compared with children presenting to the PED for non-injury-related complaints. After completing a survey of demographics and knowledge about booster seats, all parents received brief, standardized counseling about booster seats. Two weeks after the PED visit, follow-up telephone calls were made to assess behavior change.

RESULTS

Sixty-seven youth were enrolled (37 MVC group, 30 controls). Initially, 65 (97%) used a seat belt alone (36 MVC, 29 controls); the rest were unrestrained. There was no difference between the groups in mean age, sex of child, or insurance type. Significantly more families in the MVC group claimed that they would get a booster seat after their PED encounter (46% vs. 19%, p = 0.02) and their child would consistently use a booster seat (54% vs. 23%, p = 0.01). At follow-up, 45 families (67%) were reached (25 cases [68%] and 20 controls [67%]). There was no significant difference between the groups in having a booster seat at follow-up (12 cases [48%] and 9 controls [45%]) and reports of booster seat use more than 75% of the time (9 cases [36%] and 7 controls [35%]).

CONCLUSION

A minor MVC did not serve as a teachable moment to entice families to consistently use a booster seat more than families presenting to a PED for non-injury-related complaints. However, more than one third of the families who learned about booster seats in the PED reported using a booster seat regularly.

LEVEL OF EVIDENCE

Therapeutic study, level II.

Use of the relationship between absolute lymphocyte count and CD4 count to improve earlier consideration of pneumocystis pneumonia in HIV-positive emergency department patients with pneumonia

BACKGROUND

The ability to accurately assess the level of immunosuppression in HIV+ patients in the emergency department (ED) is often limited and can affect management of these patients.

OBJECTIVE

To evaluate the relationship between the absolute lymphocyte count (ALC) and CD4 count in HIV patients admitted through the ED with pneumonia and how utilization of this relationship may affect early consideration and evaluation of Pneumocystis jiroveci pneumonia (PCP).

METHODS

Retrospective multicenter 5-year study of HIV+ patients with an ICD-9 diagnosis of pneumonia. Included patients had an ALC measured on ED presentation and a CD4 count measured in < 24 h. A receiver operator curve (ROC), decision plot analysis, and McNemar test of proportions were used to characterize the relationship between study variables.

RESULTS

Six hundred eighty six patients were enrolled, 23.2% (95% confidence interval [CI] 20.2-26.1) were diagnosed with PCP. The geometric mean CD4 count and ALC were 81 and 1089, respectively. The correlation between ALC and CD4 was r = 0.60 (95% CI 0.55-65, p < 0.01). The ROC was 0.78 (0.75-0.82). An ALC < 1700 cells/mm(3) had a sensitivity of 84% (95% CI 80-87) and specificity of 55% (95% CI 48-70) for a CD4 < 200 cells/mm(3). An ALC threshold of 1700 cells/mm(3) would have identified 86% of patients with PCP but falsely identified 2.5 patients without PCP for every one accurately identified.

CONCLUSION

The ALC threshold of 1700 cells/mm(3) retains significant discriminatory value and would moderately improve identification of patients with a CD4 < 200 cells/mm(3) but is not likely to be reliable as the sole method of early recognition and evaluation of PCP.

Cost-effectiveness analysis and HIV screening: the emergency medicine perspective

Cost-effectiveness analysis is a useful tool for decisionmakers charged with prioritizing of the myriad medical interventions in the emergency department (ED). This analytic approach may be especially helpful for ranking programs that are competing for scarce resources while attempting to maximize net health benefits. In this article, we review the health economics literature on HIV screening in EDs and introduce the methods of cost-effectiveness analysis for medical interventions. We specifically describe the incremental cost-effectiveness ratio--its calculation, the derivation of ratio components, and the interpretation of these ratios.

Comparison of missed opportunities for earlier HIV diagnosis in 3 geographically proximate emergency departments

OBJECTIVE

Differences in the prevalence of undiagnosed HIV between different types of emergency departments (EDs) are not well understood. We seek to define missed opportunities for HIV diagnosis within 3 geographically proximate EDs serving different patient populations in a single metropolitan area.

METHODS

For an urban academic, an urban community, and a suburban community ED located within 10 miles of one another, we reviewed visit records for a cohort of patients who received a new diagnosis of HIV between July 1999 and June 2003. Missed opportunities for earlier HIV diagnosis were defined as ED visits in the year before diagnosis, during which there was no documented ED HIV testing offer or test. Outcomes were the number of missed opportunity visits and the number of patients with a missed opportunity for each ED. We secondarily reviewed medical records for missed opportunity encounters, using an extensive list of indications that might conceivably trigger testing.

RESULTS

Among 276 patients with a new HIV diagnosis, 123 (44.5%) visited an ED in the year before diagnosis or received a diagnosis in the ED. The urban academic ED HIV testing program diagnosed 23 (8.3%) cases and offered testing to 24 (8.7%) patients who declined. Missed opportunities occurred during 187 visits made by 76 (27.5%) patients. These included 70 patients with 157 visits at the urban academic ED, 9 patients with 24 visits at the urban community ED, and 4 patients with 6 visits at the suburban community ED. Medical records were available for 172 of the 187 missed opportunity visits. Visits were characterized by the following potential testing indicators: HIV risk factors (58; 34%), related diagnosis indicating risk (7; 4%), AIDS-defining illness (8; 5%), physician suspicion of HIV (29; 17%), and nonspecific signs or symptoms of illness potentially consistent with HIV (126; 73%).

CONCLUSION

Geographically proximate EDs differ in their opportunities for earlier HIV diagnosis, but all 3 sites had missed opportunities. Many ED patients with undiagnosed HIV have potential indications for testing documented even in the absence of a dedicated risk assessment, although most of these are nonspecific signs or symptoms of illness that may not be clinically useful selection criteria.

Effect of an emergency department HIV testing program on the proportion of emergency department patients who have been tested

OBJECTIVE

The lack of well-described population-level outcome measures for emergency department (ED) HIV testing is one barrier to translation of screening into practice. We demonstrate the impact of an ED diagnostic testing and targeted screening program on the proportion of ED patients ever tested for HIV and explore cumulative effects on testing rates over time.

METHODS

Data were extracted from electronic HIV testing program records and administrative hospital databases for January 2003 to December 2008 to obtain the monthly number of ED visits and HIV tests. We calculated the proportions of (1) patients tested in the program who reported a previous HIV test or had been previously tested in the program, and (2) the cumulative number of unique ED patients who were tested in our program.

RESULTS

During the study period, 165,665 unique patients made 491,552 ED visits and the program provided 13,509 tests to 11,503 unique patients. From 2003 to 2008, tested patients who reported a history of an HIV test increased by 0.085% per month (95% confidence interval [CI] 0.037% to 0.133%), from 67.7% to 74.4%; the percentage of tested patients who had previous testing in the program increased by 0.277% per month (95% CI 0.245% to 0.308%), from 3.2% to 21.2%; and the percentage of unique ED patients previously tested in the program increased by 0.100% per month (95% CI 0.096% to 0.105%), reaching a cumulative proportion of 6.9%.

CONCLUSION

Our HIV testing program increased the proportion of ED patients who have been tested for HIV at least once and repeatedly tested a subset of individuals. HIV screening, even during a minority of ED visits, can have important cumulative effects over time.

Absolute lymphocyte count in the emergency department predicts a low CD4 count in admitted HIV-positive patients

OBJECTIVES

This study sought to determine if the automated absolute lymphocyte count (ALC) predicts a "low" (<200 × 10(6) cells/μL) CD4 count in patients with known human immunodeficiency virus (HIV+) who are admitted to the hospital from the emergency department (ED).

METHODS

This retrospective cohort study over an 8-year period was performed in a single, urban academic tertiary care hospital with over 85,000 annual ED visits. Included were patients who were known to be HIV+ and admitted from the ED, who had an ALC measured in the ED and a CD4 count measured within 24 hours of admission. Back-translated means and confidence intervals (CIs) were used to describe CD4 and ALC levels. The primary outcome was to determine the utility of an ALC threshold for predicting a CD4 count of <200 × 10(6) cells/μL by assessing the strength of association between log-transformed ALC and CD4 counts using a Pearson correlation coefficient. In addition, area under the receiver operator curve (AUC) and a decision plot analysis were used to calculate the sensitivity, specificity, and the positive and negative likelihood ratios to identify prespecified optimal clinical thresholds of a likelihood ratio of <0.1 and >10.

RESULTS

  A total of 866 patients (mean age 42 years, 40% female) met inclusion criteria. The transformed means (95% CIs) for CD4 and ALC were 34 (31-38) and 654 (618-691), respectively. There was a significant relationship between the two measures, r = 0.74 (95% CI = 0.71 to 0.77, p < 0.01). The AUC was 0.92 (95% CI = 0.90 to 0.94, p < 0.001). An ALC of <1700 × 10(6) cells/μL had a sensitivity of 95% (95% CI = 93% to 96%), specificity of 52% (95% CI = 43% to 62%), and negative likelihood ratio of 0.09 (95% CI = 0.05 to 0.2) for a CD4 count of <200 × 10(6) cells/μL. An ALC of <950 × 10(6) cells/μL has a sensitivity of 76% (95% CI = 73% to 79%), specificity of 93% (95% CI = 87% to 96%), and positive likelihood ratio of 10.1 (95% CI = 8.2 to 14) for a CD4 count of <200 × 10(6) cells/μL.

CONCLUSIONS

  Absolute lymphocyte count was predictive of a CD4 count of <200 × 10(6) cells/μL in HIV+ patients who present to the ED, necessitating hospital admission. A CD4 count of <200 × 10(6) cells/μL is very likely if the ED ALC is <950 × 10(6) cells/μL and less likely if the ALC is >1,700 × 10(6) cells/μL. Depending on pretest probability, clinical use of this relationship may help emergency physicians predict the likelihood of susceptibility to opportunistic infections and may help identify patients who should receive definitive CD4 testing.

Entry and retention in medical care among HIV-diagnosed persons: a meta-analysis

OBJECTIVE

A 'test and treat' strategy to reduce HIV transmission hinges on linking and retaining HIV patients in care to achieve the full benefit of antiretroviral therapy. We integrated empirical findings and estimated the percentage of HIV-positive persons in the United States who entered HIV medical care soon after their diagnosis; and were retained in care during specified assessment intervals.

METHODS

We comprehensively searched databases and bibliographic lists to identify studies that collected data from May 1995 through 2009. Separate meta-analyses were conducted for entry into care and retention in care (having multiple HIV medical visits during specified assessment intervals) stratified by methodological variables. All analyses used random-effects models.

RESULTS

Overall, 69% [95% confidence interval (CI) 66-71%, N = 53 323, 28 findings] of HIV-diagnosed persons in the United States entered HIV medical care averaged across time intervals in the studies. Seventy-two percent (95% CI 67-77%, N = 6586, 12 findings) entered care within 4 months of diagnosis. Seventy-six percent (95% CI 66-84%, N = 561, 15 findings) entered care after testing HIV-positive in emergency/urgent care departments and 67% (95% CI 64-70%, N = 52 762, 13 findings) entered care when testing was done in community locations. With respect to retention in care, 59% (95% CI 53-65%, N = 75 655, 28 findings) had multiple HIV medical care visits averaged across assessment intervals of 6 months to 3-5 years. Retention was lower during longer assessment intervals.

CONCLUSION

Entry and retention in HIV medical care in the United States are moderately high. Improvement in both outcomes will increase the success of a test and treat strategy.

Seroprevalence of HIV infection among the patients attending various emergency departments in a tertiary care hospital

Emergency departments (EDs) receive patients from every background, socioeconomic group and health status. Hence, EDs can play a critical role in offering human immunodeficiency virus (HIV) testing and help in the national strategy of early HIV detection. The present study was conducted on 400 patients attending various EDs after taking Institutional Review Board approval. They were screened for HIV antibodies by three rapid/simple assay tests having different principles/antigens as per the NACO guidelines. Twenty-three (5.75%) of the 400 patients were HIV reactive. Fifteen (65.22%) of the 23 HIV-reactive patients were unaware of their reactive status. Majority of the HIV-reactive (65.22%) patients were from the Medicine emergency followed by Orthopaedics and Surgery (13.04%). Seven (30.43%) had history of fever of more than 1 month duration. Eight (34.78%) of them were later on clinically diagnosed as having various opportunistic infections. Thus, the study emphasizes the need for expansion of routine voluntary HIV counseling and testing to all the patients who come to the ED and practicing universal work precautions by health care workers.

Seroprevalence of HIV infection among the patients attending various emergency departments in a tertiary care hospital

Emergency departments (EDs) receive patients from every background, socioeconomic group and health status. Hence, EDs can play a critical role in offering human immunodeficiency virus (HIV) testing and help in the national strategy of early HIV detection. The present study was conducted on 400 patients attending various EDs after taking Institutional Review Board approval. They were screened for HIV antibodies by three rapid/simple assay tests having different principles/antigens as per the NACO guidelines. Twenty-three (5.75%) of the 400 patients were HIV reactive. Fifteen (65.22%) of the 23 HIV-reactive patients were unaware of their reactive status. Majority of the HIV-reactive (65.22%) patients were from the Medicine emergency followed by Orthopaedics and Surgery (13.04%). Seven (30.43%) had history of fever of more than 1 month duration. Eight (34.78%) of them were later on clinically diagnosed as having various opportunistic infections. Thus, the study emphasizes the need for expansion of routine voluntary HIV counseling and testing to all the patients who come to the ED and practicing universal work precautions by health care workers.

Demographic variations in HIV testing history among emergency department patients: implications for HIV screening in US emergency departments

OBJECTIVE

To determine the proportion of emergency department (ED) patients who have been tested for human immunodeficiency virus (HIV) infection and assess if patient history of HIV testing varies according to patient demographic characteristics.

DESIGN

From July 2005-July 2006, a random sample of 18-55-year-old English-speaking patients being treated for sub-critical injury or illness at a northeastern US ED were interviewed on their history of HIV testing. Logistic regression models were created to compare patients by their history of being tested for HIV according to their demography. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated.

RESULTS

Of 2107 patients surveyed who were not known to be HIV-infected, the median age was 32 years; 54% were male, 71% were white, and 45% were single/never married; 49% had private health-care insurance and 45% had never been tested for HIV. Of the 946 never previously tested for HIV, 56.1% did not consider themselves at risk for HIV. In multivariable logistic regression analyses, those less likely to have been HIV tested were male (OR: 1.32 [1.37-2.73]), white (OR: 1.93 [1.37-2.73]), married (OR: 1.53 [1.12-2.08]), and had private health-care insurance (OR: 2.10 [1.69-2.61]). There was a U-shaped relationship between age and history of being tested for HIV; younger and older patients were less likely to have been tested. History of HIV testing and years of formal education were not related.

CONCLUSION

Almost half of ED patients surveyed had never been tested for HIV. Certain demographic groups are being missed though HIV diagnostic testing and screening programmes in other settings. These groups could potentially be reached through universal screening.

High-volume rapid HIV testing in an urban emergency department

New Centers for Disease Control and Prevention (CDC) guidelines recommend routine HIV screening in locations including emergency departments. This study evaluates a novel approach to HIV counseling and testing (C&T) in a high-volume inner-city emergency department in terms of the number of patients who can be recruited, tested, test positive, and are linked to care. This prospective evaluation was conducted for 26 months. Noncritically ill or injured patients presenting to an inner-city emergency department were recruited. Patients used a multimedia program that facilitated data entry and viewed previously evaluated HIV counseling videos. Demographic characteristics, risk factors, and sexual history were collected. Data were collected on the number of patients tested, number of HIV-positive patients identified, and number linked to care. Demographic characteristics of the participants were as follows: 48.7% males, mean age 32.6 +/- 11.3, 34.6% Hispanic, and 37.9 % African American. Of the 7109 eligible patients approached, 6214 (87.4%) agreed to be HIV tested. There were 57 newly diagnosed or confirmed HIV-positive patients, representing a seroprevalence of 0.92%. Of those testing positive, 49 (84.2%) were linked to care and had a mean initial CD4 count of 238 cells/mm(3). In conclusion, a video-assisted rapid HIV program in a busy inner-city hospital emergency department can effectively test a high volume of patients and successfully link HIV-positive individuals to care, while providing high-quality education and prevention messages for all those who test.

Emergency department patient perceptions and preferences on opt-in rapid HIV screening program components

The aim of this investigation was to assess emergency department (ED) patients' perceptions and preferences about an opt-in, universal, rapid HIV screening program and identify patient groups who expressed stronger beliefs about components of the testing program. From July 2005 to July 2006, ED patients in the opt-in, universal, rapid HIV screening program were interviewed in person. Multivariable regression models were used to compare participants on their beliefs about the program components. Of the 561 participants, 62.0% had previously been tested for HIV. The majority of participants (58.8%) believed the rapid and standard/conventional HIV tests to be equally accurate, 27.7% believed the rapid test to be less or much less accurate, and 8.7% believed the rapid test to be more or much more accurate. Almost two-thirds (65.1%) favored having a rapid instead of a standard/conventional HIV test, 94.6% wanted the test results within one hour, and 61.3% would be likely or very likely to undergo testing in the ED if it prolonged their ED visit. Almost all (92.5%) believed that their medical care was "not at all" delayed because of being tested, 94.1% believed that testing did "not at all" divert attention from the reason for their ED visit, and 80.9% thought that testing in the ED was "not at all" stressful. In multivariable logistic regression models, males and those with more than 12 years of formal education showed greater concerns about the rapid HIV test's accuracy. Hispanic/Latinos, participants with governmental insurance, and those previously HIV tested were more apt to be screened for HIV even if testing delayed their ED departure. Overall, participants were highly accepting of the components of this opt-in rapid HIV screening program. However, concerns regarding the accuracy of the rapid HIV test might limit test acceptance and should be addressed during pre-test information procedures.

HIV testing and referral to care in U.S. hospitals prior to 2006: results from a national survey

OBJECTIVES

We sought to provide a benchmark for human immunodeficiency virus (HIV) testing availability and practices in U.S. hospitals prior to the Centers for Disease Control and Prevention's (CDC's) 2006 revised recommendations.

METHODS

We conducted a survey of nonfederal general hospitals in the U.S. in 2004. Chi-square tests detected significant associations with hospital characteristics. Questionnaires were completed electronically via a secure Internet site or on paper. Nonresponse analysis was conducted and data were weighted to adjust for nonresponse.

RESULTS

HIV testing (on the basis of clinical symptoms or behavioral risk factors) was available in more than half of hospital inpatient units (62%), employee health departments (58%), and emergency departments (57%). Twenty-three percent offered routine screening (testing for people in a defined population regardless of clinical symptoms or behavioral risk), most commonly in labor and delivery. Teaching status, region, size, and type of metropolitan area were associated with the availability of HIV testing and routine screening (p<0.01). Hospitals used a variety of methods to link patients to care: referral to a hospital-based clinic (36%); on-site, same-day evaluation (35%); and referral to an unaffiliated HIV or community clinic (42%).

CONCLUSIONS

Hospitals offered HIV testing on the basis of clinical suspicion or risk, but were far from meeting CDC's current recommendation to routinely test all patients aged 13 to 64. Hospital size, teaching status, and geographic location were associated with HIV testing availability and testing practices. Our understanding of current practice identifies opportunities for public health action at the practitioner, organization, and systems levels.

Emergency department patient acceptance of opt-in, universal, rapid HIV screening

OBJECTIVES

We assessed emergency department (ED) patient acceptance of opt-in, rapid human immunodeficiency virus (HIV) screening and identified demographic characteristics and HIV testing-history factors associated with acceptance of screening.

METHODS

A random sample of 18- to 55-year-old ED patients was offered rapid HIV screening. Patient acceptance or decline of screening and the reasons for acceptance or decline were analyzed with multivariable regression models. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated for the logistic regression models.

RESULTS

Of the 2,099 participants, 39.3% accepted HIV screening. In a multinomial regression model, participants who were never married/not partnered, did not have private health insurance, and had 12 or fewer years of education were more likely to be screened due to concern about a possible HIV exposure. In a multivariable logistic regression model, the odds of accepting screening were greater among those who were younger than 40-years-old (OR=1.61, 95% CI 1.32, 2.00), nonwhite (OR=1.28, 95% CI 1.04, 1.58), not married (OR=1.82, 95% CI 1.44, 2.28), lacking private health insurance (OR=1.40, 95% CI 1.13, 1.74), and who had 12 or fewer years of education (OR=1.43, 95% CI 1.16, 1.75). Despite use of a standardized protocol, patient acceptance of screening varied by which research assistant asked them to be screened. Patients not previously tested for HIV who were white, married, and 45 years or older and who had private health insurance were more likely to decline HIV screening.

CONCLUSIONS

In an opt-in, universal, ED HIV screening program, patient acceptance of screening varied by demography, which indicates that the impact of such screening programs will not be universal. Future research will need to determine methods of increasing uptake of ED HIV screening that transcend patient demographic characteristics, HIV testing history, and motivation for testing.

Video as an effective method to deliver pretest information for rapid human immunodeficiency testing

OBJECTIVES

Video-based delivery of human immunodeficiency virus (HIV) pretest information might assist in streamlining HIV screening and testing efforts in the emergency department (ED). The objectives of this study were to determine if the video "Do you know about rapid HIV testing?" is an acceptable alternative to an in-person information session on rapid HIV pretest information, in regard to comprehension of rapid HIV pretest fundamentals, and to identify patients who might have difficulties in comprehending pretest information.

METHODS

This was a noninferiority trial of 574 participants in an ED opt-in rapid HIV screening program who were randomly assigned to receive identical pretest information from either an animated and live-action 9.5-minute video or an in-person information session. Pretest information comprehension was assessed using a questionnaire. The video would be accepted as not inferior to the in-person information session if the 95% confidence interval (CI) of the difference (Delta) in mean scores on the questionnaire between the two information groups was less than a 10% decrease in the in-person information session arm's mean score. Linear regression models were constructed to identify patients with lower mean scores based upon study arm assignment, demographic characteristics, and history of prior HIV testing.

RESULTS

The questionnaire mean scores were 20.1 (95% CI = 19.7 to 20.5) for the video arm and 20.8 (95% CI = 20.4 to 21.2) for the in-person information session arm. The difference in mean scores compared to the mean score for the in-person information session met the noninferiority criterion for this investigation (Delta = 0.68; 95% CI = 0.18 to 1.26). In a multivariable linear regression model, Blacks/African Americans, Hispanics, and those with Medicare and Medicaid insurance exhibited slightly lower mean scores, regardless of the pretest information delivery format. There was a strong relationship between fewer years of formal education and lower mean scores on the questionnaire. Age, gender, type of insurance, partner/marital status, and history of prior HIV testing were not predictive of scores on the questionnaire.

CONCLUSIONS

In terms of patient comprehension of rapid HIV pretest information fundamentals, the video was an acceptable substitute to pretest information delivered by an HIV test counselor. Both the video and the in-person information session were less effective in providing pretest information for patients with fewer years of formal education.

Scope of rapid HIV testing in urban U.S. hospitals

OBJECTIVE

The present study examined the scope of rapid human immunodeficiency virus (HIV) testing in urban U.S. hospitals.

METHODS

In a multistage national probability sample, 12 primary metropolitan statistical areas (three per region) were sampled randomly, with weights proportionate to acquired immunodeficiency syndrome (AIDS) populations. All 671 eligible hospitals within areas were selected. Laboratory staff from 584 hospitals (87%) were interviewed by telephone in 2005.

RESULTS

About 52% reported rapid HIV test availability (50% in occupational health, 29% in labor and delivery, and 13% in emergency department/urgent care), and 86% of hospitals offering rapid tests processed them in the laboratory. In multivariate models, rapid test availability was more likely in hospitals serving more patients, and located in high-poverty, high-AIDS prevalence areas, and in the South or Midwest vs. West. It was less likely in hospitals serving areas with large percentages of people who were black/African American or Hispanic/Latino (p<0.05).

CONCLUSIONS

Rapid HIV testing is increasing across urban U.S. hospitals, primarily for occupational exposure and in hospitals with greater resources and need. To achieve routine HIV screening, policies should encourage greater breadth of diffusion of rapid testing at the point of care, especially in smaller facilities, the West, and communities with racial/ethnic diversity.

Contributions to early HIV diagnosis among patients linked to care vary by testing venue

OBJECTIVE

Early HIV diagnosis reduces transmission and improves health outcomes; screening in non-traditional settings is increasingly advocated. We compared test venues by the number of new diagnoses successfully linked to the regional HIV treatment center and disease stage at diagnosis.

METHODS

We conducted a retrospective cohort study using structured chart review of newly diagnosed HIV patients successfully referred to the region's only HIV treatment center from 1998 to 2003. Demographics, testing indication, risk profile, and initial CD4 count were recorded.

RESULTS

There were 277 newly diagnosed patients meeting study criteria. Mean age was 33 years, 77% were male, and 46% were African-American. Median CD4 at diagnosis was 324. Diagnoses were earlier via partner testing at the HIV treatment center (N = 8, median CD4 648, p = 0.008) and with universal screening by the blood bank, military, and insurance companies (N = 13, median CD4 483, p = 0.05) than at other venues. Targeted testing by health care and public health entities based on patient request, risk profile, or patient condition lead to later diagnosis.

CONCLUSION

Test venues varied by the number of new diagnoses made and the stage of illness at diagnosis. To improve the rate of early diagnosis, scarce resources should be allocated to maximize the number of new diagnoses at screening venues where diagnoses are more likely to be early or alter testing strategies at test venues where diagnoses are traditionally made late. Efforts to improve early diagnosis should be coordinated longitudinally on a regional basis according to this conceptual paradigm.

Process and Impact Evaluation of a Legal Assistance and Health Care Community Partnership

Community health partnerships have increased in popularity, but their effectiveness is often not evaluated. Through secondary data analysis, this study evaluates a program that offered access to legal services to address health-related issues, such as Medicaid reimbursement, Social Security benefits, medication coverage, and divorce. Based on the analysis reimbursements to expenditures, the health and law program appears to be cost-effective and thereby economically sustainable. The cost-effectiveness of this program increases the likelihood that it will be institutionalized and/or expanded. This program evaluation is used to exemplify how community stakeholders could partner to leverage resources to establish a sustainable community health and law program to address the needs of people living in medically underserved areas.

Development and implementation of a model to improve identification of patients infected with HIV using diagnostic rapid testing in the emergency department

OBJECTIVES

Infection with the human immunodeficiency virus (HIV) continues to expand in nontraditional risk groups, and the prevalence of undiagnosed infection remains relatively high in the patient populations of urban emergency departments (EDs). Unfortunately, HIV testing in this setting remains uncommon. The objectives of this study were 1) to develop a physician-based diagnostic rapid HIV testing model, 2) to implement this model in a high-volume urban ED, and 3) to prospectively characterize the patients who were targeted by physicians for testing and determine the proportions who completed rapid HIV counseling, testing, and referral; tested positive for HIV infection; and were successfully linked into medical and preventative care.

METHODS

An interdisciplinary group of investigators developed a model for performing physician-based diagnostic rapid HIV testing in the ED. This model was then evaluated using a prospective cohort study design. Emergency physicians identified patients at risk for undiagnosed HIV infection using clinical judgment and consensus guidelines. Testing was performed by the hospital's central laboratory, and clinical social workers performed pretest and posttest counseling and provided appropriate medical and preventative care referrals, as defined by the model.

RESULTS

Over the 30-month study period, 105,856 patients were evaluated in the ED. Of these, 681 (0.64%; 95% confidence interval [CI] = 0.60% to 0.69%) were identified by physicians and completed rapid HIV counseling, testing, and referral. Of the 681 patients, 15 (2.2%; 95% CI = 1.2% to 3.6%) patients tested positive for HIV infection and 12 (80%; 95% CI = 52% to 96%) were successfully linked into care.

CONCLUSIONS

A physician-based diagnostic HIV testing model was developed, successfully implemented, and sustained in a high-volume, urban ED setting. While the use of this model successfully identified patients with undiagnosed HIV infection in the ED, the overall level of testing remained low. Innovative testing programs, such as nontargeted screening, more specific targeted screening, or alternative hybrid methods, are needed to more effectively identify undiagnosed HIV infection in the ED patient population.

A novel emergency department based prevention intervention program for people living with HIV: evaluation of early experiences

BACKGROUND

HIV prevention is increasingly focused on people living with HIV (PLWH) and the role of healthcare settings in prevention. Emergency Departments (EDs) frequently care for PLWH, but do not typically endorse a prevention mission. We conducted a pilot exploratory evaluation of the first reported ED program to address the prevention needs of PLWH.

METHODS

This retrospective observational cohort evaluation reviewed program records to describe the first six months of participants and programmatic operation. Trained counselors provided a risk assessment and counseling intervention combined with three linkage interventions: i) linkage to health care, ii) linkage to case management, and iii) linkage to partner counseling and referral.

RESULTS

Of 81 self-identified PLWH who were approached, 55 initially agreed to participate. Of those completing risk assessment, 17/53 (32%, 95 CI 20% to 46%) reported unprotected anal/vaginal intercourse or needle sharing in the past six months with a partner presumed to be HIV negative. Counseling was provided to 52/53 (98%). For those requesting services, 11/15 (73%) were linked to healthcare, 4/23 (17%) were coordinated with case management, and 1/4 (25%) completed partner counseling and referral.

CONCLUSION

Given base resources of trained counselors, it was feasible to implement a program to address the prevention needs for persons living with HIV in an urban ED. ED patients with HIV often have unmet needs which might be addressed by improved linkage with existing community resources. Healthcare and prevention barriers for PLWH may be attenuated if EDs were to incorporate CDC recommended prevention measures for healthcare providers.

Implementing an HIV and Sexually Transmitted Disease Screening Program in an Emergency Department

STUDY OBJECTIVE

We assess the feasibility, effectiveness, and cost of routinely recommended HIV/sexually transmitted disease screening in an urban emergency department (ED).

METHODS

From April 2003 to August 2004, patients aged 15 to 54 years were offered rapid HIV testing, and those aged 15 to 25 years were also offered gonorrhea and chlamydia testing (nucleic acid amplification), Monday through Friday, 11 am to 8 pm. Infected patients were referred for treatment and care. Prevalence, treatment rates, and cost were assessed.

RESULTS

Among 3,030 patients offered HIV testing, 1,447 (47.8%) accepted, 8 (0.6%) tested positive, and 3 (37.5%) were linked to care. Among 791 patients offered sexually transmitted disease testing, 386 (48.8%) accepted, 320 provided urine (82.9%), 48 (15.0%) tested positive, and 42 (87.5%) were treated for gonorrhea or chlamydia. The program cost was $72,928. Costs per HIV-infected patient identified and linked to care were, respectively, $9,116 and $24,309; cost per sexually transmitted disease-infected patient treated was $1,736. The program cost for HIV/sexually transmitted disease screening was only $14,340 more than if we screened only for HIV.

CONCLUSION

Through ED-based HIV/sexually transmitted disease screening, we identified and treated many sexually transmitted disease-infected patients but identified few HIV-infected patients and linked even fewer to care. However, sexually transmitted disease screening can be added to HIV screening at a reasonable cost.

Detecting Unsuspected HIV Infection With a Rapid Whole-Blood HIV Test in an Urban Emergency Department

OBJECTIVE

To evaluate and compare HIV screening and provider-referred diagnostic testing as strategies for detecting undiagnosed HIV infection in an urban emergency department (ED).

METHODS

From January 2003 through April 2004, study staff offered HIV screening with rapid tests to ED patients regardless of risks or symptoms. ED providers could also refer patients for diagnostic testing. Patients aged 18 to 54 years without known HIV infection were eligible.

RESULTS

Of 4849 eligible patients approached for screening, 2824 (58%) accepted and were tested; 414 (95%) of 436 provider-referred patients accepted and were tested. Thirty-five (1.2%) screened patients and 48 (11.6%) provider-referred patients were infected with HIV (P < 0.001). Of these, 18 (51%) screened patients and 24 (50%) referred patients reported no traditional risk factors; 27 (77%) screened patients and 38 (79%) referred patients entered HIV care. Of HIV-infected patients with CD4 cell counts available, 14 (45%) of 31 screened patients and 37 (82%) of 45 provider-referred patients had <200 cells/microL (P < 0.001).

CONCLUSIONS

ED screening detects HIV infection and links to care patients who may not be tested through risk- or symptom-based strategies. The diagnostic yield was higher among provider-referred patients, but screening detected patients earlier in the course of disease.