Infectious Disease-Related Emergency Department Visits of Elderly Adults in the United States, 2011-2012

Imaging of pulmonary infections encountered in the emergency department in post-COVID 19 era- common, rare and exotic. Bacterial and viral

Pulmonary infections contribute substantially to emergency department (ED) visits, posing a considerable health burden. Lower respiratory tract infections are prevalent, particularly among the elderly, constituting a significant percentage of infectious disease-related ED visits. Timely recognition and treatment are crucial to mitigate morbidity and mortality. Imaging studies, primarily chest radiographs and less frequently CT chests, play a pivotal role in diagnosis. This article aims to elucidate the imaging patterns of both common and rare pulmonary infections (bacterial and viral) in the post COVID-19 era, emphasizing the importance of recognizing distinct radiological manifestations. The integration of clinical and microbiological evidence aids in achieving accurate diagnoses, and guiding optimal therapeutic interventions. Despite potential overlapping manifestations, a nuanced understanding of radiological patterns, coupled with comprehensive clinical and microbiological information, enhances diagnostic precision in majority cases.

Estimated plasma volume status is a simple and quick tool that could help define the severity of patients with infection on arrival at the emergency department

BACKGROUND

Infectious states are subtle and rapidly evolving conditions observed daily in the emergency department (ED), and their prognostic evaluation remains a complex clinical challenge. Recently, estimated plasma volume status (ePVS) has been suggested to have a prognostic role in conditions where volemic alteration is central to the pathophysiology. The aim of this study was to verify whether ePVS recorded at ED admission can provide prognostic indications of 30-day mortality in patients with infection.

METHODS

A prospective observational study was performed between 1 January 2021 and 31 December 2021 at the ED of the Merano Hospital. All patients with infection were enrolled. ePVS values were derived from haemoglobin and haematocrit measured on the immediate arrival of patients in the ED. The predictive power of ePVS for 30-day mortality was assessed using a multivariate model adjusted for severity, comorbidity and urgency. Kaplan-Meier analysis was also performed.

RESULTS

Of the 949 patients with infection enrolled in the study (47.9%, SOFA ≥2), 8.9% (84/949) died at 30 days. The median ePVS value was higher in patients who died at 30 days than in patients who survived (5.83 vs. 4.61, p < 0.001). Multivariate analysis revealed that ePVS in both continuous and categorical form around the median was an independent risk factor for 30-day mortality even after adjusting for severity, comorbidity and urgency. Kaplan-Meier analysis confirmed an increased risk of death in patients with high ePVS values.

CONCLUSIONS

ePVS recorded on ED admission of patients with infection was an independent predictor of risk for 30-day mortality.

Two decades of influenza and pneumonia mortality trends: Demographics, regional shifts and disparities in the United States: 1999 to 2020

BACKGROUND

In the 20th century, influenza and pneumonia constituted the largest proportion of infectious disease deaths in the United States. Despite progress in management, US mortality trends for these diseases have not been thoroughly investigated.

OBJECTIVES

We aim to examine the patterns of influenza and pneumonia-related deaths among US residents.

METHODS

Crude death rates and age-adjusted mortality rates (AAMRs) per 100,000 individuals were calculated using influenza and pneumonia mortality data (International Classification of Diseases, 10th revision codes: J09-J18) from the CDC WONDER database. Annual percentage changes with a 95% confidence interval were determined using joinpoint regression analysis. Average annual percentage changes were computed as the weighted average of annual percentage changes.

RESULTS

From 1999 to 2020, US influenza and pneumonia deaths totaled 1,257,088 (AAMR: 17.09), with a significantly decreasing AAMR (-2.94). Males had a higher AAMR (20.13) than females (15.02). Non-Hispanic American Indians had the highest AAMR (20.44), while Hispanics had the lowest AAMR (13.91). The Northeast had the highest AAMR (18.02). All other regions had similar AAMRs. Rural regions had a consistently higher AAMR (19.80) than urban regions (AAMR: 16.51).

CONCLUSION

Tailoring interventions toward high-risk groups can enhance the effectiveness of preventive measures, vaccination, and health care access.

SARS-CoV-2 vaccination and risk of infectious diseases in hospitalized older patients

PURPOSE

Vaccinations, for example flu vaccine, may be a cause of cross-reactive immunostimulation that prevents a larger spectrum of infections. However, whether SARS-CoV-2 vaccinations may also determine this effect is unclear. This study aims, first, to assess the incidence of infections at hospital admission and during the hospitalization in older inpatients vaccinated and unvaccinated against SARS-CoV-2; second, to compare length of hospital stay and in-hospital mortality between vaccinated and unvaccinated individuals.

METHODS

This retrospective study included 754 older inpatients admitted to the Geriatrics and Orthogeriatrics Units of the University Hospital of Ferrara (Italy) between March 2021 and November 2021. Sociodemographic and health-related data, and the diagnosis of infections at hospital admission and during hospitalization were collected from medical records.

RESULTS

The sample's mean age was 87.2 years, 59.2% were females, and 75.5% were vaccinated against SARS-CoV-2. Vaccinated individuals had 36% lower odds of intra-hospital infections (OR = 0.64, 95%CI 0.44-0.94) and 39% lower in-hospital death (HR = 0.61, 95%CI 0.39-0.95), also after adjusting for potential confounders, while no significant results emerged about infections at hospital admission. Considering the hospitalization's endpoints, SARS-CoV-2 vaccination was associated with a lower probability of being transferred to long-term care or other hospital departments than returning home (OR = 0.63, 95%CI 0.40-0.99).

CONCLUSIONS

In older inpatients, SARS-CoV-2 vaccination seems to be associated with a lower likelihood of intra-hospital infectious diseases not caused by SARS-CoV-2 and all-cause in-hospital mortality. The vaccination coverage in the older population could limit not only the onset and severity of COVID-19 but also the occurrence of other infectious diseases.

Emergency department admissions and economic costs burden related to ambulatory care sensitive conditions in older adults living in care homes

OBJECTIVES

To assess the frequency of emergency department admissions (EDA) for ambulatory care sensitive conditions (ACSC) and non-ACSC among older adults living in care homes (CH), to describe and compare their demographic and clinical characteristics, the outcomes of the hospitalisation process and the associated costs.

METHOD

This multicenter, retrospective and observational study evaluated 2444 EDAs of older adults ≥ 65 years old living in care homes in 5 emergency departments in Catalonia (Spain) by ACSC and non-ACSC, in 2017. Sociodemographic variables, prior functional and cognitive status, and information on diagnosis and hospitalisation were collected. Additionally, the costs related with the EDAs were calculated, as well as a sensitivity analysis using different assumptions of decreased admissions due to ACSC.

RESULTS

A total of 2444 ED admissions were analysed. The patients' mean (SD) age was 85.9 (7.2) years. The frequency of ACSC-EDA and non-ACSC-EDA was 56.6% and 43.4%, respectively. Severe dependency and cognitive impairment were present in 56.6% and 78%, respectively, with no differences between the two groups. The three most frequent ACSC were falls/trauma (13.8%), chronic obstructive pulmonary disease/asthma (11.4%) and urinary tract infection (7.4%). The average cost per ACSC-EDA was є1,408.24. Assuming a 60% reduction of ACSC-EDA, the estimated cost savings would be є1.2 million.

CONCLUSIONS

Emergency admissions for ACSC from care homes have a significant impact on both frequency and costs. Reducing these conditions through targeted interventions could redirect the avoided costs towards improving care support in residential settings.

A novel scoring system combining Modified Early Warning Score with biomarkers of monocyte distribution width, white blood cell counts, and neutrophil-to-lymphocyte ratio to improve early sepsis prediction in older adults

OBJECTIVES

This study aims to investigate whether combining scoring systems with monocyte distribution width (MDW) improves early sepsis detection in older adults in the emergency department (ED).

METHODS

In this prospective observational study, we enrolled older adults aged ≥60 years who presented with confirmed infectious diseases to the ED. Three scoring systems-namely quick sepsis-related organ failure assessment (qSOFA), Modified Early Warning Score (MEWS), and National Early Warning Score (NEWS), and biomarkers including MDW, neutrophil-to-lymphocyte ratio (NLR), and C-reactive protein (CRP), were assessed in the ED. Logistic regression models were used to construct sepsis prediction models.

RESULTS

After propensity score matching, we included 522 and 2088 patients with and without sepsis in our analysis from January 1, 2020, to September 30, 2021. NEWS ≥5 and MEWS ≥3 exhibited a moderate-to-high sensitivity and a low specificity for sepsis, whereas qSOFA score ≥2 demonstrated a low sensitivity and a high specificity. When combined with biomarkers, the NEWS-based, the MEWS-based, and the qSOFA-based models exhibited improved diagnostic accuracy for sepsis detection without CRP inclusion (c-statistics=0.842, 0.842, and 0.826, respectively). Of the three models, MEWS ≥3 with white blood cell (WBC) count ≥11 × 10⁹/L, NLR ≥8, and MDW ≥20 demonstrated the highest diagnostic accuracy in all age subgroups (c-statistics=0.886, 0.825, and 0.822 in patients aged 60-74, 75-89, and 90-109 years, respectively).

CONCLUSIONS

Our novel scoring system combining MEWS with WBC, NLR, and MDW effectively detected sepsis in older adults.

The Diagnostic Accuracy Of Procalcitonin for Urinary Tract Infection in Hospitalized Older Adults: a Prospective Study

BACKGROUND

The diagnosis of urinary tract infection (UTI) is challenging among hospitalized older adults, particularly among those with altered mental status.

OBJECTIVE

To determine the diagnostic accuracy of procalcitonin (PCT) for UTI in hospitalized older adults.

DESIGN

We performed a prospective cohort study of older adults (≥65 years old) admitted to a single hospital with evidence of pyuria on urinalysis. PCT was tested on initial blood samples. The reference standard was a clinical definition that included the presence of a positive urine culture and any symptom or sign of infection referable to the genitourinary tract. We also surveyed the treating physicians for their clinical judgment and performed expert adjudication of cases for the determination of UTI.

PARTICIPANTS

Two hundred twenty-nine study participants at a major academic medical center.

MAIN MEASURES

We calculated the area under the receiver operating characteristic curve (AUC) of PCT for the diagnosis of UTI.

KEY RESULTS

In this study cohort, 61 (27%) participants met clinical criteria for UTI. The median age of the overall cohort was 82.6 (IQR 74.9-89.7) years. The AUC of PCT for the diagnosis of UTI was 0.56 (95% CI, 0.46-0.65). A series of sensitivity analyses on UTI definition, which included using a decreased threshold for bacteriuria, the treating physicians' clinical judgment, and independent infectious disease specialist adjudication, confirmed the negative result.

CONCLUSIONS

Our findings demonstrate that PCT has limited value in the diagnosis of UTI among hospitalized older adults. Clinicians should be cautious using PCT for the diagnosis of UTI in hospitalized older adults.

Warning Signs of Acute Infectious Disease-Related Illness in Persons Living With Dementia: Perspectives of Primary Care Providers, Adult Day Service Center Staff, and Family Care Partners

In the current study, we conducted one-on-one interviews with primary care providers (PCPs) and family care partners (FCPs) and held focus groups with interdisciplinary adult day service center (ADSC) staff to understand the perspectives of care providers across community settings regarding early warning signs of acute illnesses in persons living with dementia (PLWD). We used content analysis to analyze qualitative data. Warning signs of acute illnesses in PLWD fell into one of five categories, including new onset changes in (a) physical functions, (b) moods or behaviors (psychological), (c) social interactions, (d) speech, or (e) appearance. FCPs (n = 11) focused on physical changes, whereas ADSC staff (n = 33) emphasized changes in speech and social interactions in addition to the other categories. Although ADSC staff and PCPs (n = 22) focused on changes in functions and moods, each group described these changes differently. ADSC staff possess rich information that can be used to identify acute changes in PLWD and describe a broader range of warning signs compared to PCPs and FCPs. FCPs may benefit from further training in distinguishing between normal disease progression and acute illness. Future research should focus on the implementation of standardized tools across community-based care providers to simplify the identification and reporting of early warning signs in PLWD. [Journal of Psychosocial Nursing and Mental Health Services, xx(x), xx-xx.].

Predictors for mortality in patients admitted with suspected bacterial infections - A prospective long-term follow-up study

OBJECTIVE

The aim was to examine predictors for all-cause mortality in a long-term follow-up study of adult patients with infectious diseases of suspected bacterial origin.

METHODS

A prospective observational study of patients admitted to the emergency department during 1.10.2017-31.03.2018. We used Cox regression to estimate adjusted hazard ratios (aHR) with 95% confidence intervals for mortality.

RESULTS

A total of 2110 patients were included (median age 73 years). After a median follow-up of 2.1 years 758 (35.9%, 95% CI 33.9-38.0%) patients had died. Age (aHR1.05; 1.04-1.05), male gender (aHR 1.21; 1.17-1.25), cancer (aHR 1.80; 1.73-1.87), misuse of alcohol (aHR 1.30; 1.22-1.38), if admitted with sepsis within the last year before index admission (aHR 1.56;1.50-1.61), a Sequential Organ Failure Assessment (SOFA) score ≥2 (aHR 1.90; 1.83-1.98), SIRS criteria ≥2 (aHR 1.23;1.18-1.28) at admission to the ED, length of stay (aHR 1.05; 1.04-1.05) and devices and implants as sources of infection (aHR 7.0; 5.61-8.73) were independently associated with mortality. Skin infections and increasing haemoblobin values reduced the risk of death.

CONCLUSIONS

More than one-third of a population of patients admitted to the emergency department with infectious diseases of suspected bacterial origin had died during a median follow up of 2.1 years. The study identified several independent predictors for mortality.

A Clinical Diagnostic Study: Fibulin-2 is a Novel Promising Biomarker for Predicting Infection

Introduction

Infection remains a major cause of morbidity and mortality in hospital. As uncontrolled early infection may develop into systemic infection and eventually progress to sepsis, it is important to address infection at an early stage. Furthermore, early detection and prompt diagnosis of infection are the basis of clinical intervention. However, as a result of the interference of complex aetiologies, including fever and trauma, problems regarding the sensitivity and specificity of current diagnostic indices remain, such as for C-reactive protein (CRP), procalcitonin (PCT), white blood cells (WBC), neutrophil ratio (NEU%), interleukin-6 (IL-6) and D-dimer. As a result, there is an urgent need to develop new biomarkers to diagnose infection.

Methods

From January to October 2021, consecutive patients in the emergency department (ED) were recruited to investigate the feasibility of fibulin-2 as a diagnostic indicator of early infection. Fibulin-2 concentrations in plasma were determined with enzyme-linked immunosorbent assay (ELISA). The performance of fibulin-2 for predicting infection was analysed by receiver operating characteristic (ROC) curves.

Results

We found that the plasma fibulin-2 level was elevated in patients with infection compared with those without infection. ROC curve analysis showed that the area under the curve (AUC) for fibulin-2 was 0.712. For all patients included, the diagnostic ability of fibulin-2 (AUC 0.712) performed as well as CRP (AUC 0.667) and PCT (AUC 0.632), and better than WBC (AUC 0.620), NEU% (AUC 0.619), IL-6 (AUC 0.561) and D-dimer (AUC 0.630). In patients with fever, fibulin-2 performed as well as PCT and better than the other biomarkers in infection diagnosis. In particular, fibulin-2 performed better than all these biomarkers in patients with trauma.

Conclusion

Fibulin-2 is a novel promising diagnostic biomarker for predicting infection.

Supplementary Information

The online version contains supplementary material available at 10.1007/s40121-022-00622-y.

Is ANTT Achievable in the Home Healthcare Setting?

At the heart of infection prevention in the home care setting is aseptic technique, a generic term for the clinical competency of ensuring asepsis during invasive clinical procedures and the maintenance of invasive medical devices. Variable terminology has resulted in confused education and clinical practice. Ambiguity has played out in all care environments, but especially in the home, where the challenge of providing effective aseptic technique is complicated by unique environmental and logistical factors. This has led some to conclude that aseptic technique is not possible in the home, or that it is not required at all in certain situations. This article challenges these assumptions and outlines the Aseptic Non Touch Technique (ANTT®) Clinical Practice Framework, that is used widely internationally. Through a thematic analysis of focus group discussions with home care nurses (n = 107) in the United Kingdom and the United States, opinions about aseptic practice in the home care setting were examined. Three main polarizing themes were identified and used to discuss theory and practice applications of aseptic technique for home healthcare nurses. Specific challenges in performing aseptic technique in home-based settings are exacerbated by ambiguity between what constitutes "clean," "aseptic," or so-called "sterile" technique, and are perpetuated by a lack of competency-based training that doesn't reflect the critical importance of aseptic technique to patient safety. Rather than continuing an endless debate about the definition of aseptic technique, ANTT has redefined aseptic technique education and clinical practice, with a comprehensive clinical practice framework and associated clinical governance better supporting patient safety.

The Five Ds of Outpatient Antibiotic Stewardship for Urinary Tract Infections

Urinary tract infections (UTI) are one of the most common indications for antibiotic prescriptions in the outpatient setting. Given rising rates of antibiotic resistance among uropathogens, antibiotic stewardship is critically needed to improve outpatient antibiotic use, including in outpatient clinics (primary care and specialty clinics) and emergency departments. Outpatient clinics are in general a neglected practice area in antibiotic stewardship programs, yet most antibiotic use in the United States is in the outpatient setting. This article provides a comprehensive review of antibiotic stewardship strategies for outpatient UTI in the adult population, with a focus on the "five Ds" of stewardship for UTI, including right diagnosis, right drug, right dose, right duration, and de-escalation. Stewardship interventions that have shown success for improving prescribing for outpatient UTI are discussed, including diagnostic stewardship strategies, such as reflex urine cultures, computerized decision support systems, and modified reporting of urine culture results. Among the many challenges to achieving stewardship for UTI in the outpatient setting, some of the most important are diagnostic uncertainty, increasing antibiotic resistance, limitations of guidelines, and time constraints of stewardship personnel and front-line providers. This article presents a stewardship framework, built on current evidence and expert opinion, that clinicians can use to guide their own outpatient management of UTI.

Uptake of pneumococcal vaccination in older people in northern Israel

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A database research presents uptake of pneumococcal vaccine in people older than 65.

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A databased retrospective research following 20,591 people older than 65 years for uptake of pneumococcal vaccine during 5 years.

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The research was conducted in a large HMO that provided the vaccine free of charge.

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Uptake of the vaccine was associated with other health promotion activities.

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Uptake of the vaccine was not associated with visits to family health clinics.

The 23-valent pneumococcal vaccine is recommended for people aged 65 years and over, to prevent pneumonia, a leading cause of infectious morbidity in older people. This study assessed pneumococcal vaccination in people aged 65–74 years living in northern Israel who were eligible for the pneumococcal vaccine since introduction free of charge. This retrospective study used the database of Clalit Health Services, the largest health maintenance organization in Israel.

We fitted a Cox regression model to assess associations of vaccine uptake with sociodemographic and clinical characteristics, and a Wilcoxon rank-sum test and Chi-square test to assess associations of vaccine uptake with the performance of other health-related activities.

The analysis included 20,591 people. People aged 65–70 were more likely to take the vaccine than people aged 71–74 [HR = 1.8; CI: 1.6–1.9]. Jews were more likely to take it than Arabs [HR = 1.1; CI: 1.0–1.2], and men were more likely to take it than women [HR = 1.1; CI: 1.0–1.2]. In women who took the vaccine, the rate of performance of mammography was higher (61.9 % ± 45.3 vs 50.3% ± 44.5, p < 0.0001). A similar trend was found for men and women with respect to occult blood tests (36.3% ± 31.5 vs 31.7% ± 30, p < 0.0001).

Frequency of visits to family medicine clinics was negatively associated with vaccination.

Uptake of the pneumococcal vaccine was associated with some parameters indicative of self-care but not with the level of exposure to the primary health care staff.

After-hours health promotion activities by trained personnel may be an effective way to cope with the gap in performance.

Infectious Diseases-Related Emergency Department Visits Among Non-Elderly Adults with Intellectual and Developmental Disabilities in the United States: Results from the National Emergency Department Sample, 2016

Emerging evidence on the disproportionate impact of COVID-19 on people with intellectual and developmental disabilities (IDD) points to the underlying risk and burden of infectious diseases (IDs) in this population. The objective of this study was to examine the risk of ID-related emergency department (ED) visits, subsequent hospitalizations, and hospital-based mortality during ID-related visits among adults with IDD compared to those without IDD. The authors conducted a retrospective study using data from the 2016 Nationwide Emergency Department Sample. The sample included 94,928 adults with IDD identified using ICD-10-CM codes, and age- and sex-matched 284,763 non-IDD adults in a 1:3 case-control ratio. A Poisson regression model was used to compare the risk of ID-related ED visits, subsequent hospitalizations, and hospital-based mortality during ID-related visits between adults with and without IDD. Covariates included sociodemographic and hospital characteristics. Results showed that adults with IDD are at a higher risk for ID-related ED visits, subsequent hospitalization, and mortality during ID-related ED visits compared to non-IDD adults. Adults with IDD continued to experience higher risks even after accounting for sociodemographic, hospital, and clinical characteristics. Septicemia and respiratory tract infections are the leading causes of ED visits, hospitalization, and mortality. This study found substantial disparities in ID-related ED visits, subsequent hospitalization, and mortality among the burdens for adults with IDD. These observations underscore the importance of integrated strategies to reduce ID-related morbidity among adults with IDD.

Retrospective assessment of antimicrobial stewardship initiative in outpatient use of ertapenem for uncomplicated extended spectrum beta lactamase Enterobacteriaceae urinary tract infections

BACKGROUND

Urinary tract infections (UTI) are often over-diagnosed and over-treated, which can induce and select for resistant pathogens. After observing wide-spread outpatient use of ertapenem, a broad-spectrum antibiotic, a structured antimicrobial stewardship initiative (ASI) to improve appropriate antimicrobial prescribing was undertaken. ASI objectives were to achieve a goal of reducing ertapenem utilization for extended spectrum beta lactamase Enterobacteriaceae (ESBL-EB) UTI by 10% and evaluate the clinical outcomes associated with the ASI.

METHODS

A pre-to-post cohort study was conducted at a single-center integrated healthcare system between November 1, 2014 and February 26, 2017. An intensive, 90-day, pharmacist-driven, structured ASI was implemented between November 1, 2015 and January 29, 2016. Female patients aged ≥18 years who were treated for an uncomplicated, ESBL-EB urinary tract infection (UTI) were included. Primary outcome was clinical resolution defined as cure, persistence, relapse and recurrence. Secondary outcome measured was monthly ertapenem use expressed as number of days of therapy (DOT)/1000 adjusted patient days (APD). Segmented regression analysis for interrupted time series was performed to estimate ASI intervention effect.

RESULTS

A total of 184 patients were included in the study. Ertapenem utilization decreased from 0.0145 DOT/1000 APD in Nov. 2014 to 0.0078 DOT/1000 APD Feb. 2017(p < 0.01). The mean ertapenem DOT declined 19% overall from the pre vs. post intervention periods (32 vs 26, p < 0.01). Frequency of recurrent UTIs between treatments did not significantly differ and no adverse effects were reported in patients treated with aminoglycosides.

CONCLUSIONS

A structured ASI for uncomplicated ESBL-EB UTI was associated with a clinically meaningful decrease in ertapenem utilization and once-daily, 5-day aminoglycoside treatment was well-tolerated.

Predictors of short-term hospitalization and emergency department presentations in aged care

OBJECTIVES

To examine individual, medication, system, and healthcare related predictors of hospitalization and emergency department (ED) presentation within 90 days of entering the aged care sector, and to create risk-profiles associated with these outcomes.

DESIGN AND SETTING

Retrospective population-based cohort study using data from the Registry of Senior Australians.

PARTICIPANTS

Older people (aged 65 and older) with an aged care eligibility assessment in South Australia between January 1, 2013 and May 31, 2016 (N = 22,130).

MEASUREMENTS

Primary outcomes were unplanned hospitalization and ED presentation within 90 days of assessment. Individual, medication, system, and healthcare related predictors of the outcomes at the time of assessment, within 90 days or 1-year prior. Fine-Gray models were used to calculate subdistribution hazard ratios (sHR) and 95% confidence intervals (CI). Harrell's C-index assessed predictive ability.

RESULTS

Four thousand nine-hundred and six (22.2%) individuals were hospitalized and 5028 (22.7%) had an ED presentation within 90 days. Predictors of hospitalization included: being a man (hospitalization sHR = 1.33, 95% CI 1.26-1.42), ≥3 urgent after-hours attendances (hospitalization sHR = 1.21, 95% CI 1.06-1.39), increasing frailty index score (hospitalization sHR = 1.19, 95% CI 1.11-1.28), individuals using glucocorticoids (hospitalization sHR = 1.11, 95% CI 1.02-1.20), sulfonamides (hospitalization sHR = 1.18, 95% CI 1.10-1.27), trimethoprim antibiotics (hospitalization sHR = 1.15, 95% CI 1.03-1.29), unplanned hospitalizations 30 days prior (hospitalization sHR = 1.13, 95% CI 1.04-1.23), and ED presentations 1 year prior (hospitalization sHR = 1.07, 95% CI 1.04-1.10). Similar predictors and hazard estimates were also observed for ED presentations. The hospitalization models out-of-sample predictive ability (C-index = 0.653, 95% CI 0.635-0.670) and ED presentations (C-index = 0.647, 95% CI 0.630-0.663) were moderate.

CONCLUSIONS

One in five individuals with aged care eligibility assessments had unplanned hospitalizations and/or ED presentation within 90 days with several predictors identified at the time of aged care eligibility assessment. This is an actionable period for targeting at-risk individuals to reduce hospitalizations.

Quick Sequential Organ Failure Assessment, Sequential Organ Failure Assessment, and Procalcitonin for Early Diagnosis and Prediction of Death in Elderly Patients with Suspicion of Sepsis in the Emergency Department, Based on Sepsis-3 Definition

BACKGROUND

Sepsis is a disease with a high mortality rate without prompt treatment. However, this entity is difficult to diagnose in the elderly population in the emergency room; for this reason, it is necessary to have diagnostic tools for early detection.

OBJECTIVE

The aim of the study was to determine the highest diagnostic yield of procalcitonin (PCT), Quick Sequential Organ Failure Assessment (qSOFA), and Sequential Organ Failure Assessment (SOFA) for sepsis (based on the sepsis-3 consensus), on admission at the emergency department, in those older than 65 years.

METHODS

This is a diagnostic test study of a historical cohort of 65-year-old patients with suspected sepsis.

RESULTS

In the sample of 179 patients, 53.6% had confirmed sepsis. Significant differences were found (p < 0.0001), with a greater diagnostic and predictive capacity of PCT for the diagnosis of sepsis (receiver operating characteristics curve area [area under the curve (AUC) = 0.883, 95% CI: 0.835-0.931] than qSOFA (AUC = 0.559, 95% CI: 0.485-0.663) and SOFA (AUC = 0.662, 95% CI: 0.584-0.739); these results were similar in the cohort of patients ≥75 years. In positive PCT(≥0.5 ng/mL), the sensitivity was 71.8% (95% CI: 62.36-81.39), specificity of 89.1% (95% CI: 81.87-96.45%), V+ 88.4% (95% CI: 80.73-96.19%), V- of 73.2% (95% CI: 64.14-82.39%), positive likelihood ratio of 6.63 (95% CI: 3.53-12.44), and negative likelihood ratio of 0.32 (95% CI: 0.23-0.44); these results were similar in the cohort of patients ≥75 years. Lactate ≥2 mmol/L (RR = 1.659 [95% CI: 1.002-2.747]) and PCT ≥0.5 ng/mL (RR = 1.942 [95% CI: 1.157-3.261]) showed a significant association with in-hospital mortality.

CONCLUSION

In the elderly population with suspicion of infection on admission to the emergency department, qSOFA presents a low diagnostic performance of confirmed sepsis and in-hospital mortality, for which other tools with higher diagnostic and prognostic performance should be added, such as PCT and lactate.

Infections in Older Adults

Infections in elderly patients can prove diagnostically challenging. Age-related factors affecting the immune system in older individuals contribute to nonspecific presentations. Other age-related factors and chronic conditions have symptoms that may or may not point to an infectious diagnosis. Delay in administration of antimicrobials can lead to poor outcomes; however, unnecessary administration of antimicrobials can lead to increased morbidity and contribute to the emergence of multidrug-resistant organisms. Careful clinical assessment and consideration of patient history and risk factors is crucial. When necessary, antimicrobials should be chosen that are appropriate for the diagnosis and deescalated as soon as possible.

Alterations of monocyte NF-κB p65/RelA signaling in a cohort of older medical patients, age-matched controls, and healthy young adults

BACKGROUND

Altered monocyte NF-κB signaling is a possible cause of inflammaging and driver of aging, however, evidence from human aging studies is sparse. We assessed monocyte NF-κB signaling across different aging trajectories by comparing healthy older adults to older adults with a recent emergency department (ED) admission and to young adults.

METHODS

We used data from: 52 older (≥65 years) Patients collected upon ED admission and at follow-up 30-days after discharge; 52 age- and sex-matched Older Controls without recent hospitalization; and 60 healthy Young Controls (20-35 years). Using flow cytometry, we assessed basal NF-κB phosphorylation (pNF-κB p65/RelA; Ser529) and induction of pNF-κB following stimulation with LPS or TNF-α in monocytes. We assessed frailty (FI-OutRef), physical and cognitive function, and plasma levels of IL-6, IL-18, TNF-α, and soluble urokinase plasminogen activator receptor.

RESULTS

Patients at follow-up were frailer, had higher levels of inflammatory markers and decreased physical and cognitive function than Older Controls. Patients at follow-up had higher basal pNF-κB levels than Older Controls (median fluorescence intensity (MFI): 125, IQR: 105-153 vs. MFI: 80, IQR: 71-90, p < 0.0001), and reduced pNF-κB induction in response to LPS (mean pNF-κB MFI fold change calculated as the log10 ratio of LPS-stimulation to the PBS-control: 0.10, 95% CI: 0.08 to 0.12 vs. 0.13, 95% CI: 0.10 to 0.15, p = 0.05) and TNF-α stimulation (0.02, 95% CI: - 0.00 to 0.05 vs. 0.10, 95% CI: 0.08 to 0.12, p < 0.0001). Older Controls had higher levels of inflammatory markers than Young Controls, but basal pNF-κB MFI did not differ between Older and Young Controls (MFI: 81, IQR: 70-86; p = 0.72). Older Controls had reduced pNF-κB induction in response to LPS and TNF-α compared to Young Controls (LPS: 0.40, 95% CI: 0.35 to 0.44, p < 0.0001; and TNF-α: 0.33, 95% CI: 0.27 to 0.40, p < 0.0001). In Older Controls, basal pNF-κB MFI was associated with FI-OutRef (p = 0.02).

CONCLUSIONS

Increased basal pNF-κB activity in monocytes could be involved in the processes of frailty and accelerated aging. Furthermore, we show that monocyte NF-κB activation upon stimulation was impaired in frail older adults, which could result in reduced immune responses and vaccine effectiveness.

Back to Basics: Recognition of Sepsis with New Definition

Patients with serious infections at risk of deterioration represent highly challenging clinical situations, and in particular for junior doctors. A comprehensive clinical examination that integrates the assessment of vital signs, hemodynamics, and peripheral perfusion into clinical decision making is key to responding promptly and effectively to evolving acute medical illnesses, such as sepsis or septic shock. Against this background, the new concept of sepsis definition may provide a useful link between junior doctors and consultant decision making. The purpose of this article is to introduce the updated definition of sepsis and suggest its practical implications, with particular emphasis on integrative clinical assessment, allowing for the rapid identification of patients who are at risk of further deterioration.

Which near-patient tests might improve the diagnosis of UTI in older people in urgent care settings? A mapping review and consensus process

PURPOSE

The aim of this study was to map out the existing knowledge on near-patient tests for urinary tract infections, and use a consensus building approach to identify those which might be worthy of further evaluation in the urgent care context, defined as clinically useful and feasible results available within 4-24 h.

METHODS

A systematic search for reviews describing diagnostic tests for UTI was undertaken in Medline, EMBASE, Cochrane database of systematic reviews and CINAHL selected reviews were retained according to a priori inclusion and exclusion criteria, and then graded for quality using the CASP tool for reviews. A consensus process involving microbiologists and chemical pathologists helped identify which test might conceivably be applied in the urgent care context (e.g. Emergency Department, giving results within 24 h).

RESULTS

The initial search identified 1079 papers, from which 26 papers describing 35 diagnostic tests were retained for review. The overall quality was limited, with only 7/26 retained papers scoring more than 50% on the CASP criteria. Reviews on urine dipstick testing reported wide confidence intervals for sensitivity and specificity; several raised concerns about urine dip testing in older people. A number of novel biomarkers were reported upon but appeared not to be helpful in differentiating infection from asymptomatic bacteriuria. Blood markers such as CRP and procalcitonin were reported to be helpful in monitoring rather than diagnosing UTI. The consensus process helped to refine the 35 test down to 17 that might be useful in the urgent care context: urinalysis (nitrites and leucocytes), uriscreen catalase test, lactoferrin, secretory immunoglobulin A, xanthine oxidase, soluble triggering receptor expressed on myeloid cells, A-1 microglobulin (a1 Mg) and a1 Mg/creatinine ratio, cytokine IL-6, RapidBac, MALDI-TOF, electronic noses, colorimetric sensor arrays, electro chemical biosensor, WBC count (blood), C-reactive peptide, erythrocyte sedimentation rate.

CONCLUSIONS

A wide range of diagnostic tests have been explored to diagnose UTI, but, in general, have been poorly evaluated or have wide variation in predictive properties. This study identified 17 tests for UTI that seemed to offer some primes and merit further evaluation for diagnosing UTI in older people in urgent care settings.

Prevalence and factors associated with one-year mortality of infectious diseases among elderly emergency department patients in a middle-income country

Background

This study aimed to determine the prevalence of infectious diseases and risk factors for one-year mortality in elderly emergency department (ED) patients.

Methods

A retrospective cohort study of patients aged 65 and over who visited the ED of one urban teaching hospital in Bangkok, Thailand and who were diagnosed with infectious diseases between 1 January 2016 and 30 June 2016.

Results

There were 463 elderly patients who visited ED with infectious diseases, accounting for 14.5% (463/3,196) of all elderly patients’ visits. The most common diseases diagnosed by emergency physicians (EPs) were pneumonia [151 (32.6%) patients] followed by pyelonephritis [107 (23.1%) patients] and intestinal infection [53 (11.4%) patients]. Moreover, 286 (61.8%) patients were admitted during the study period. The in-hospital mortality rate was 22.7%. 181 (39.1%) patients died within 1 year. Our multivariate analysis showed that age 85 years and older [odds ratio (OR) = 1.89; 95% confidence interval (CI): 1.36–2.63], Charlson Co-morbidity Index score ≥ 5 (OR = 3.51; 95% CI2.14–5.77), lactate ≥4 mmol/l (OR = 2.66;95% CI 1.32–5.38), quick Sequential Organ Failure Assessment (qSOFA) score ≥ 2 (OR = 5.46; 95% CI 2.94–10.12), and platelet count < 100,000 cells/mm³ (OR = 3.19; 95% CI 1.15–8.83) were associated with 1-year mortality.

Conclusions

In one middle-income country, infectious diseases account for 14.5% of elderly ED patients. Almost two-thirds of patients presenting to ED with infection are admitted to hospital. One-third of elderly ED patients with infection died within 1 year. Age ≥ 85 years, Charlson Co-morbidity Index score ≥ 5, lactate ≥4 mmol/l, qSOFA score ≥ 2, and platelet count < 100,000 cells/mm³ predicted 1-year mortality rate.

National Patterns of Urine Testing During Inpatient Admission

Background

Overuse of urine testing is a driver of inappropriate antimicrobial use. Limiting wasteful testing is important for patient safety. We examined the national prevalence and patterns of urine testing during adult inpatient admission in the United States.

Methods

We performed a retrospective cohort study using a national dataset of inpatient admissions from 263 hospitals in the United States from 2009 to 2014. We included all adult inpatient admissions, excluding those related to pregnancy, urology procedures, and with lengths of stay >30 days. A facility-level fixed-effects quasi-Poisson regression model was used to examine the incidence of urinalysis and urine culture testing for select diagnoses and patient factors.

Results

The cohort included 4473655 admissions. Charges for urinalysis were present for 2086697 (47%) admissions, with 584438 (13%) including >1 urinalysis. Charges for urine culture were present for 1197242 (27%) admissions, with 246211 (6%) having >1 culture. Urine culture testing varied by principal diagnosis. Heart failure and acute myocardial infarction had 29% and 35% fewer cultures sent on the first day of admission compared to all other admissions (P < .001). Female sex and receipt of antibiotics during the hospital admission consistently predicted increased culture testing, regardless of principal diagnosis or age.

Conclusions

Urine testing was common and frequently repeated during inpatient admission, suggesting large-scale overuse. The variation in testing by diagnosis suggests that clinical presentation modifies test use. The sex bias in urine testing is not clinically supported and must be addressed in interventions aimed at reducing excess urine testing.

Urinary tract infection-related hospitalization among older adults receiving home health care

BACKGROUND

Urinary tract infection (UTI)- related hospitalizations are a poor patient outcome in the rapidly growing home health care (HHC) arena that serves a predominantly elderly population. We examined the association between activities of daily living (ADL) and risk of UTI-related hospitalization among this population.

METHODS

Using a retrospective cohort design, we conducted a secondary data analysis of a 5% random sample of a national HHC dataset, the Outcome and Assessment Information Set for the year 2013. Andersen's Behavioral Model of Health Service Utilization was used as a guiding framework for statistical modeling. We used logistic regression to examine the association between UTI-related hospitalization and predisposing, enabling, or need factors.

RESULTS

Among beneficiaries (n = 24,887) hospitalized in 2013, 1,133 had UTI-related hospitalizations. HHC patients with a UTI-related hospitalization were more likely to have severe ADL dependency, impaired decision making, and lower Charlson Comorbidity Index, than those with a non UTI-related hospitalization (P < .001). Risk factors for UTI-related hospitalization included female sex, (adjusted odds ratio [AOR], 1.44; 95% confidence interval [CI], 1.25-1.66), Medicaid recipient (AOR, 1.99; 95% CI, 1.09-3.64), severe ADL dependency (AOR, 1.50; 95% CI, 1.16-1.94), the presence of a caregiver to assist with supervision and safety (AOR, 1.26; 95% CI, 1.06-1.49), treatment for UTI in the previous 14 days (AOR, 2.85; 95% CI, 2.46-3.29), presence of a urinary catheter (AOR, 3.77; 95% CI, 2.98-4.77), and prior history of indwelling or suprapubic catheter (AOR, 1.44; 95% CI, 1.06-1.94).

CONCLUSIONS

ADL dependency levels are a potentially modifiable risk factor for UTI-related hospitalization on admission to HHC. ADL dependency levels can inform clinical interventions to ameliorate ADL dependency in HHC settings and identify groups of patients at high risk for UTI-related hospitalization.

Emergency Department Visits and Disease Burden Attributable to Ambulatory Care Sensitive Conditions in Elderly Adults

Many countries worldwide are aging rapidly, and the complex care needs of older adults generate an unprecedented demand for health services. Common reasons for elderly emergency department (ED) visits frequently involve conditions triggered by preventable infections also known as ambulatory care sensitive conditions (ACSCs). This study aims to describe the trend and the associated disease burden attributable to ACSC-related ED visits made by elderly patients and to characterize their ED use by nursing home residence. We designed a population-based ecological study using administrative data on Taiwan EDs between 2002 and 2013. A total of 563,647 ED visits from individuals aged 65 or over were examined. All elderly ED visits due to ACSCs (tuberculosis, upper respiratory infection, pneumonia, sepsis, cellulitis and urinary tract infection (UTI)) were further identified. Subsequent hospital admissions, related deaths after discharge, total health care costs and disability-adjusted life years (DALYs) were compared among different ACSCs. Prevalence of ACSCs was then assessed between nursing home (NH) residents and non-NH residents. Within the 12-year observation period, we find that there was a steady increase in both the rate of ACSC ED visits and the proportion of elderly with a visit. Overall, pneumonia is the most prevalent among six ACSCs for elderly ED visits (2.10%; 2.06 to 2.14), subsequent hospital admissions (5.77%; 5.59 to 5.94) and associated mortality following admission (17.37%; 16.74 to 18.01). UTI is the second prevalent ACSC consistently across ED visits (2.02%; 1.98 to 2.05), subsequent hospital admissions (2.36%, 2.25 to 2.48) and mortality following admission (10.80%; 10.28 to 11.32). Sepsis ranks third highest in the proportion of hospitalization following ED visit (2.29%; 2.18 to 2.41) and related deaths after hospital discharge (7.39%; 6.95 to 7.83), but it accounts for the highest average total health care expenditure (NT$94,595 ± 120,239; ≈US$3185.02) per case. When examining the likelihood of ACSC-attributable ED use, significantly higher odds were observed in NH residents as compared with non-NH residents for: pneumonia (adjusted odds ratio (aOR): 5.01, 95% confidence interval (CI) 4.50-5.58); UTI (aOR: 4.44, 95% CI 3.97-4.98); sepsis (aOR: 3.54, 95% CI 3.06-4.10); and tuberculosis (aOR: 2.44, 95% CI 1.63-3.65). Here we examined the ACSC-related ED care and found that, among the six ACSCs studied, pneumonia, UTI and sepsis were the leading causes of ED visits, subsequent hospital admissions, related mortality, health care costs and DALYs in Taiwanese NH elderly adults. Our findings suggest that efficient monitoring and reinforcing of quality of care in the residential and community setting might substantially reduce the number of preventable elderly ED visits and alleviate strain on the health care system.

Viral pathogens associated with acute respiratory illness in hospitalized adults and elderly from Zagreb, Croatia, 2016 to 2018

Aims

To investigate the viral etiology of acute respiratory infection (ARI) in hospitalized adults and elderly patients in Croatia, compare the prevalence of detected viruses, and to determine clinical characteristics and seasonal occurrence of investigated infections.

Methods

From January 2016 to June 2018, a total of 182 adult patients presented with symptoms of ARI and admitted to the hospital were tested for 15 respiratory viruses by multiplex reverse‐transcription polymerase chain reaction. Clinical data were collected by retrospective analysis of the patient's chart.

Results

A virus was identified in 106 (58.5%) of the patients. The most commonly detected virus was influenza virus (41.5%), followed by respiratory syncytial virus (13.8%), human metapneumovirus (13.0%), parainfluenza viruses (12.2%), rhinoviruses (11.4%), adenovirus and coronaviruses with equal frequencies (3.3%), and enterovirus (1.6%). The serum level of C‐reactive protein and white blood cell count were significantly lower in patients with respiratory viruses identified when compared with those in whom no virus was detected (P < 0.001 and P = 0.007, respectively). There were no differences in clinical symptoms according to the type of the detected virus, except for more frequent illness exposure recall for influenza infection ( P = 0.010). Influenza, parainfluenza, and pneumoviruses were detected mostly in winter months, while rhinoviruses in autumn and spring.

Conclusions

In addition to influenza, pneumoviruses, rhinoviruses, and parainfluenza viruses play an important role in etiology of ARIs in adults. Fast and accurate laboratory diagnosis for respiratory viruses in routine practice is needed for clinicians optimally manage patients with ARI and potentially avoid the unnecessary use of antimicrobial drugs.

Nonspecific Symptoms Lack Diagnostic Accuracy for Infection in Older Patients in the Emergency Department

OBJECTIVES

To determine if nonspecific symptoms and fever affect the posttest probability of acute bacterial infection in older patients in the emergency department (ED).

DESIGN

Preplanned, secondary analysis of a prospective observational study.

SETTING

Tertiary care, academic ED.

PARTICIPANTS

A total of 424 patients in the ED, 65 years or older, including all chief complaints.

MEASUREMENTS

We identified presence of altered mental status, malaise/lethargy, and fever, as reported by the patient, as documented in the chart, or both. Bacterial infection was adjudicated by agreement among two or more of three expert reviewers. Odds ratios were calculated using univariable logistic regression. Positive and negative likelihood ratios (PLR and NLR, respectively) were used to determine each symptom's effect on posttest probability of infection.

RESULTS

Of 424 subjects, 77 (18%) had bacterial infection. Accounting for different reporting methods, presence of altered mental status (PLR range, 1.40-2.53) or malaise/lethargy (PLR range, 1.25-1.34) only slightly increased posttest probability of infection. Their absence did not assist with ruling out infection (NLR, greater than 0.50 for both). Fever of 38°C or higher either before or during the ED visit had moderate to large increases in probability of infection (PLR, 5.15-18.10), with initial fever in the ED perfectly predictive, but absence of fever did not rule out infection (NLR, 0.79-0.92). Results were similar when analyzing lower respiratory, gastrointestinal, and urinary tract infections (UTIs) individually. Of older adults diagnosed as having UTIs, 47% did not complain of UTI symptoms.

CONCLUSIONS

The presence of either altered mental status or malaise/lethargy does not substantially increase the probability of bacterial infection in older adults in the ED and should not be used alone to indicate infection in this population. Fever of 38°C or higher is associated with increased probability of infection. J Am Geriatr Soc 67:484-492, 2019.

Effectiveness of probiotics on the occurrence of infections in older people: systematic review and meta-analysis

BACKGROUND

infectious diseases in older people are associated with higher mortality rates and probiotics have been hypothesised to reduce the occurrence of infection.

OBJECTIVES

to assess the effectiveness and safety of probiotics in the occurrence of infections in older adults in comparison to placebo.

METHODS

a systematic review and meta-analysis of randomised placebo-controlled trials were conducted on 30 December 2016 using Medline, Embase, CENTRAL, Web of Science and LILACS databases. Efficacy outcomes were: occurrence of infection, quality of life, mortality and mean duration of infection per episode. Safety outcomes were adverse events. Data were analysed using relative risk ratios with 95% confidence intervals. Relative risk ratios were pooled where more than three estimates were available.

RESULTS

fifteen articles were included, with a total of 5,916 participants with a mean age of 75.21 years. The effect of probiotics was not significantly different from that reported for placebo on the occurrence of infection, adverse events, mortality or mean duration of infection episodes (relative risk (RR) 0.90, 95% confidence interval (CI) 0.76 to 1.08; RR 1.01, 95% CI 0.91 to 1.12; RR 1.09, 95% CI 0.70 to 1.72; MD -0.35, 95% CI -1.57 to 0.87, respectively).

CONCLUSION

the current low-quality evidence does not support the use of probiotics for the reduction in the occurrence of infection in older adults, however, the safety outcomes were similar between probiotics and placebo. Further research is required to confirm these findings.PROSPERO: CRD42014013707.

Accuracy of Current Diagnostic Criteria for Acute Bacterial Infection in Older Adults in the Emergency Department

OBJECTIVES

To compare the accuracy of the Loeb criteria, emergency department (ED) physicians' diagnoses, and Centers for Disease Control and Prevention (CDC) guidelines for acute bacterial infection in older adults with a criterion standard expert review.

DESIGN

Prospective, observational study.

SETTING

Urban, tertiary-care ED.

PARTICIPANTS

Individuals aged 65 and older in the ED, excluding those who were incarcerated, underwent a trauma, did not speak English, or were unable to consent.

MEASUREMENTS

Two physician experts identified bacterial infections using clinical judgement, participant surveys, and medical records; a third adjudicated in cases of disagreement. Agreement and test characteristics were measured for ED physician diagnosis, Loeb criteria, and CDC surveillance guidelines.

RESULTS

Criterion-standard review identified bacterial infection in 77 of 424 participants (18%) (18 (4.2%) lower respiratory, 19 (4.5%) urinary tract (UTI), 22 (5.2%) gastrointestinal, 15 (3.5%) skin and soft tissue). ED physicians diagnosed infection in 71 (17%), but there were 33 with under- and 27 with overdiagnosis. Physician agreement with the criterion standard was moderate for infection overall and each infection type (κ = 0.48-0.59), but sensitivity was low (<67%), and the negative likelihood ratio (LR(-)) was greater than 0.30 for all infections. The Loeb criteria had poor sensitivity, agreement, and LR(-) for lower respiratory (50%, κ = 0.55; 0.51) and urinary tract infection (26%, κ = 0.34; 0.74), but 87% sensitivity (κ = 0.78; LR(-) 0.14) for skin and soft tissue infections. CDC guidelines had moderate agreement but poor sensitivity and LR(-).

CONCLUSION

Emergency physicians often under- and overdiagnose infections in older adults. The Loeb criteria are useful only for diagnosing skin and soft tissue infections. CDC guidelines are inadequate in the ED. New criteria are needed to aid ED physicians in accurately diagnosing infection in older adults.

Intravenous Vancomycin Dosing in the Elderly: A Focus on Clinical Issues and Practical Application

The elderly population can be divided into three distinct age groups: 65-74 years (young-old), 75-84 years (middle-old), and 85+ years (old-old). Despite evidence of a shift in leading causes for mortality in the elderly from infectious diseases to chronic conditions, infections are still a serious cause of death in this population. These patients are at increased risk due to weakened immune systems, an increased prevalence of underlying comorbidities, and decreased physiologic reserves to fight infection. Additionally, elderly patients, especially adults in institutional settings, are at an increased risk of colonization and subsequent infection with methicillin-resistant Staphylococcus aureus at a rate that is five times higher than in younger individuals, causing an increase in empiric and definitive vancomycin use. Elderly patients have unique characteristics that make dosing vancomycin a challenge for clinicians, such as increased volume of distribution and decreased renal function. Using the best available evidence, it is recommended to initiate lower empiric maintenance doses and monitor vancomycin serum concentrations earlier than steady state to accurately calculate drug elimination and make appropriate dose adjustments.

Healthcare-associated infections in the elderly: what's new

PURPOSE OF REVIEW

The high-risk population and current lack of knowledge regarding appropriate infection prevention in the long-term care (LTC) setting has contributed to substantial rates of resistance and healthcare-associated infections in this arena. More evidence-based research on LTC is necessary, particularly now that the elderly population is increasing.

RECENT FINDINGS

Proposed government mandates highlight the urgent need to combat antimicrobial resistance in the LTC setting. Recent studies focusing on unique strategies for the prevention of transmission and infection with multidrug-resistant organisms in nursing homes are discussed, as well as attempts to formulate clear antimicrobial stewardship programs.

SUMMARY

The long-term setting has unique challenges to instituting effective infection control precautions, therefore current accepted methods used in acute-care facilities need to be modified. Recent data suggest that prevention of transmission in LTC may be achieved with focus on high-risk patients or specific care-based activities rather than colonization status. Antimicrobial stewardship and consultation with specialized physicians may be important measures to combat resistance and adverse events in LTC. The prevention of unnecessary antibiotic use in palliative care may reduce rates of resistance as well as discomfort for terminal patients.

Sepsis and Other Infectious Disease Emergencies in the Elderly

Waning immunity and declining anatomic and physiologic defenses render the elder vulnerable to a wide range of infectious diseases. Clinical presentations are often atypical and muted, favoring global changes in mental status and function over febrile responses or localizing symptoms. This review encompasses early recognition, evaluation, and appropriate management of these common infections specifically in the context of elders presenting to the emergency department. With enhanced understanding and appreciation of the unique aspects of infections in the elderly, emergency physicians can play an integral part in reducing the morbidity and mortality associated with these often debilitating and life-threatening diseases.