Prevalence and management of antibiotic associated diarrhea in general hospitals.

BACKGROUND: Antibiotic-associated diarrhea (AAD) is a common adverse effect of antibiotic (AB) treatment. This study aimed to measure the overall prevalence of AAD (including mild to moderate diarrhea) in hospitalized AB treated patients, to investigate associated risk factors and to document AAD associated diagnostic investigations, contamination control and treatment. METHODS: During 8 observation days (with time delay of 10-14 days between each observation day), all adult patients hospitalized at an internal medicine ward of 4 Belgian participating hospitals were screened for AB use. Patients receiving AB on the observation day were included in the study and screened for signs and symptoms of AAD using a period prevalence methodology. Clinical data were collected for all AB users and AAD related investigations and treatment were collected for the entire duration of AAD. Additionally, nurses noted daily the frequency of all extra care associated to the treatment of the diarrhea. RESULTS: A total of 2543 hospitalized patients were screened of which 743 were treated with AB (29.2%). Included AB users had a mean age of 68 yr (range 16-99) and 52% were male. Penicillins were mostly used (63%) and 19% received more than one AB. AAD was observed in 9.6% of AB users including 4 with confirmed Clostridium difficile infection. AAD started between 1 and 16 days after AB start (median 5) and had a duration of 2 to 41 days (median 4). AAD was significantly associated with higher age and the use of double AB and proton pump inhibitors. AAD patients had extra laboratory investigations (79%), received extra pharmacological treatment (42%) and 10 of them were isolated (14%). AAD related extra nursing time amounted to 51 minutes per day for the treatment of diarrhea. CONCLUSIONS: In this observational study, with one third of hospitalized patients receiving AB, an AAD period prevalence of 9.6% in AB users was found. AAD caused extra investigations and treatment and an estimated extra nursing care of almost one hour per day. Preventive action are highly recommended to reduce the prevalence of AAD and associated health care costs.

Resident and nurse reports of potential adverse drug reactions.

PURPOSE: Nursing home residents are at high risk for adverse drug reactions (ADR). To improve pharmacotherapeutic care for individual residents, healthcare professionals need to be aware of ADRs. In nursing homes, nurses have a central role in monitoring residents' health and informing physicians on the presence of ADRs. The aim of this study was to evaluate the value of nursing home residents' ADR reports. METHODS: Residents of a convenient sample of two nursing homes were included if their mental status and understanding of Dutch enabled them to report ADRs. In a cross-sectional design, residents and nurses were questioned about 17 potential ADRs. Reports of residents and nurses were consequently compared. Medication use was studied to describe the risk for ADRs per resident. RESULTS: Residents had a mean of eight different chronic medication prescriptions. Over 90% of the residents used medications which increase the risk of feeling somnolent/tired/sedated, arrhythmias and abdominal pain. The median number of potential ADRs reported by nurses was significantly lower compared to the number of resident reports (median [range], respectively, 1 [1-10] and 4 [1-10]). In general, residents reported the presence of more ADRs than nurses, except for confusion. The correspondence between nurse and resident reports ranged from 43% (dry mouth) till 88% (arrhythmia). CONCLUSIONS: Nurses and patients reported a lot of potential ADRs. The type of ADRs they reported was different and complementary. Questioning residents about specific potential ADRs may increase the awareness of ADRs.

The impact of chronic benzodiazepine use on cognitive evolution in nursing home residents.

OBJECTIVE: Chronic use of benzodiazepines and Z-drugs (BZD/Zs) has been linked to cognitive decline. In this one-year prospective cohort study, we explored the impact of chronic BZD/Z use on cognitive decline compared to nonusers. METHODS: In cognitively capable BZD/Z users and nonusers in 10 Belgian nursing homes, we investigated cognition with the MiniMentalStateExamination(MMSE) at baseline and one year. A decrease of ≥ 4 points on the MMSE (clinically relevant decrease) was used in multiple logistic regression. We collected baseline demographics, functional, psychometric and social characteristics potentially influencing cognition. RESULTS: In both the 131 BZD/Z users and 95 nonusers, the cognition decreased significantly over time, but without significant difference between the groups. Clinically relevant decrease was present in 34% BZD/Z users and 27% nonusers (NS). Controlled for age, gender, education and BZD/Z use, the significant risk factors for clinically relevant cognitive decline were depression, hearing and functional impairment. Frequent reading was associated with less MMSE decrease. Our findings could not demonstrate with statistical significance that BZD/Z use was associated with fast cognitive decline. The risk factors for fast decline were depression, hearing and functional impairment, and the absence of a reading attitude. In addition, BZD/Z use and depression were associated, indicating a complex relationship.

Feasibility of discontinuing chronic benzodiazepine use in nursing home residents: a pilot study.

PURPOSE: Guidelines discourage chronic benzodiazepines and related Z drugs (BZD/Zs) for sleep problems. However, prevalence among nursing home residents remains high. Discontinuing these drugs is widely recommended but seems difficult to implement. The aim of our study was to evaluate the overall feasibility in the nursing home, in terms of willingness towards discontinuation and success rate at 8 months, together with the impact on withdrawal symptoms, change in sleep quality, quality of life and medication use. METHODS: In a convenience sample of five nursing homes (823 residents), we included cognitively competent residents with chronic BZD/Z use for insomnia. We investigated sleep quality [with Pittsburgh Sleep Quality Index (PSQI)], quality of life (EQ-5D) and withdrawal symptoms [Benzodiazepine Withdrawal Symptom Questionnaire (BWSQ)]. Success rate was analysed with survival analysis. RESULTS: Of the 135 eligible residents, both general physician (GP) and resident were willing to initiate discontinuation in 38 residents. Reasons for refusing to initiate discontinuation among GPs was the unmotivated patient and among residents the reluctance towards change. At 8 months, 66.0% were successful discontinuers, with the subjective PSQI component evolving favourably (p = 0.013) and a decreasing number of midnight awakenings (p = 0.041). In the relapse group (n = 13), the quality of life decreased (p = 0.012), with mainly an increase of problems with activities and pain/discomfort. In both groups, the withdrawal symptoms, functionality and medication use did not change. CONCLUSION: Discontinuation of chronic BZD/Z use is feasible in the nursing home setting without noticeable withdrawal symptoms, without a switch in medication use, without detrimental effect on quality of life and with a positive effect on the self-perceived sleep quality.

Quality of prescribing in Belgian nursing homes: an electronic assessment of the medication chart.

OBJECTIVE: To develop a computerized assessment tool for monitoring the quality of prescribing in Belgian nursing homes. DESIGN: In a observational cross-sectional study of the medication charts of nursing home residents, potentially inappropriate medication (PIM) was investigated using three scoring systems for the elderly (Beers, ACOVE, BEDNURS) complemented with a list of drug-drug interactions. SETTING: A representative stratified sample of Belgian nursing homes (n = 76). PARTICIPANTS: A random sample of nursing home residents with a complete data set (n = 1730) excluding palliative care patients. MAIN OUTCOME MEASURE: A combination of PIM scores to assess inappropriate, under- and overprescribing. RESULTS: Included residents had a mean age of 85, 78% were female. They used a mean of 7.1 chronic medications. Most PIMs were detected by the application of the ACOVE criteria for underprescribing with 58% of patients having at least one PIM. Using the BEDNURS and the Beers criteria, at least one PIM was noticed in 56 and 27% of patients, respectively. Patients' characteristics showing a positive relationship with the PIM score were age, female gender, amount of clinical and nursing care problems, number of prescriptions and the use of psychotropic drugs (multiple regression analysis R(2) = 0.332). CONCLUSIONS: In Belgian nursing homes, the observed high level of drug utilization was associated with potentially inappropriate prescribing. The development of a combined assessment tool and the implementation of a computerized monitoring system of PIMs is highly recommended to improve the quality of prescribing.

Barriers to antipsychotic discontinuation in nursing homes: an exploratory study.

OBJECTIVES: Despite safety warnings on serious adverse effects and guidance advising discontinuation, antipsychotic use in nursing homes remains high. Studies documenting the barriers experienced to antipsychotic discontinuation are rare. This exploratory study investigates the willingness of nurses and general practitioners (GPs) as well as the barriers to undertake antipsychotic discontinuation. DESIGN AND SETTING: A mixed-method study involving an expert meeting, followed by a survey using structured questionnaires distributed to responsible nurses (primary caregivers) and treating GPs on selected nursing home residents in Belgian nursing homes to generate case-specific information. RESULTS: Antipsychotic users (n = 113) had a mean age of 81 years (range 57-97); 62% were female and 81% had moderate to severe cognitive impairment. Nurses and GPs indicated a willingness for antipsychotic discontinuation in a small proportion of residents, 13.8% and 12.2%, respectively, with a shared willingness in only 4.2%. Residents for whom there was a higher willingness to try antipsychotic discontinuation were generally older (mean age 84.6 vs. 80.3, p = 0.07), had high physical dependency (ADL > 14, 93.3% vs. 60.9%, p = 0.01) and resided on a ward with controlled access (80.0% vs. 45.7%, p = 0.02). In contrast, residents for whom there was a significant lower willingness for discontinuation already had a previously failed discontinuation effort, and may present risk of harm to themselves or to others. Nurses working longer on the ward, with lower education, presented higher barriers to discontinuation of antipsychotics. CONCLUSION: Nurses and GPs share a very low willingness and high barriers to antipsychotic discontinuation. To implement discontinuation programs, complex multidisciplinary interventions should be offered taking existing barriers into account.

Nurse-led interventions to enhance adherence to chronic medication: systematic review and meta-analysis of randomised controlled trials.

PURPOSE: Non-adherence to chronic medication remains an important problem with vast consequences and without solutions to date. Nurses are well positioned to provide adherence care, yet currently represent an underutilised force in improving adherence and outcomes. This review aims to synthesise the effect of nurse-led interventions on adherence to chronic medication. METHODS: Using Review Manager software, a meta-analysis was conducted. The search term medication adherence was combined with random* and nurse in PubMed and ISI Web of Knowledge. Retrieved articles' reference lists were hand searched. Included were randomised controlled trials on nurse-led interventions, aiming to improve chronic medication adherence. Articles were to be in English and published from 2006 to 2011. Quality was assessed using an adapted version of the CONSORT tool. RESULTS: Ten studies met the selection criteria, seven of which were on HIV-positive patients. Their quality was acceptable to high. Counselling was the intervention most frequently assessed, mostly given face-to-face, but also in groups and via electronic messages. All interventions enhanced adherence. Of the five studies reporting adherence as mean percentage of adherence, pooled mean differences were +5.39 (1.70-9.07) (short term) and +9.49 (4.68-14.30) (long term), favouring the intervention groups. Of the studies reporting adherence dichotomously, odd's ratios were 1.55 (1.04-2.29) (short term) and 1.87 (1.35-2.61) (long term). The longer counselling was effectuated, the better the results. CONCLUSIONS: Counselling appears to be an effective approach that nurses can use to supplement other methods, building a multifaceted strategy to enhance adherence. Tackling non-adherence seems to demand continuous efforts and follow-up.

Economic evaluation of different treatment modalities in acute kidney injury.

BACKGROUND: Major controversy exists regarding the preferred treatment option for acute kidney injury (AKI). The purpose of this study was to assess the incremental cost-effectiveness of continuous renal replacement therapy (CRRT) versus intermittent renal replacement therapy (IRRT) and conservative (CONS) AKI treatment in Belgium. METHODS: An area-under-the-curve model based on survival analysis was used to estimate costs and health outcomes using a 2-year time horizon. Input data were derived from the multi-centre Stuivenberg Hospital Acute Renal Failure 4 study. RESULTS: Analyses indicated that in-hospital mortality, hospitalization costs and hospital length of stay differed significantly between treatment modes. Follow-up mortality rates and follow-up cost per day showed no significant difference between the treatment modes. Utility values, which improved gradually after admission to the hospital, revealed no significant differences between the three treatment strategies. CONS treatment was associated with a 2-year cost of 33,802€ and 0.54 quality-adjusted life years (QALYs). The CRRT was the most expensive therapy with a cost of 51,365€ leading to 0.57 QALYs. The cost and QALYs associated with IRRT were 43,445€ and 0.50, respectively. One-way sensitivity analyses indicated the 'in-hospital mortality' as the variable with the greatest influence on the results. Probabilistic sensitivity analysis resulted in a significant difference in treatment costs but no significant difference in QALY gain. CONCLUSIONS: This study has indicated that the most expensive treatment (CRRT) associated with an incremental cost of approximately €7920 generates only a minor non-significant increase in QALYs of 0.07 compared with IRRT. Additionally, the results revealed that the RRTs did not result in a significant increase in QALYs despite their higher cost compared with the CONS treatment. From a health economic perspective, the latter seems to be the preferred treatment strategy.

The effect of earplugs during the night on the onset of delirium and sleep perception: a randomized controlled trial in intensive care patients.

INTRODUCTION: This study hypothesised that a reduction of sound during the night using earplugs could be beneficial in the prevention of intensive care delirium. Two research questions were formulated. First, does the use of earplugs during the night reduce the onset of delirium or confusion in the ICU? Second, does the use of earplugs during the night improve the quality of sleep in the ICU? METHODS: A randomized clinical trial included adult intensive care patients in an intervention group of 69 patients sleeping with earplugs during the night and a control group of 67 patients sleeping without earplugs during the night. The researchers were blinded during data collection. Assignment was performed by an independent nurse researcher using a computer program. Eligible patients had an expected length of stay in the ICU of more than 24 hours, were Dutch- or English-speaking and scored a minimum Glasgow Coma Scale of 10. Delirium was assessed using the validated NEECHAM scale, sleep perception was reported by the patient in response to five questions. RESULTS: The use of earplugs during the night lowered the incidence of confusion in the studied intensive care patients. A vast improvement was shown by a Hazard Ratio of 0.47 (95% confidence interval (CI) 0.27 to 0.82). Also, patients sleeping with earplugs developed confusion later than the patients sleeping without earplugs. After the first night in the ICU, patients sleeping with earplugs reported a better sleep perception. CONCLUSIONS: Earplugs may be a useful instrument in the prevention of confusion or delirium. The beneficial effects seem to be strongest within 48 hours after admission. The relation between sleep, sound and delirium, however, needs further research. TRIAL REGISTRATION: Current Controlled Trials ISRCTN36198138.

Benzodiazepine use in Belgian nursing homes: a closer look into indications and dosages.

AIM: (1) To describe the prevalence of benzodiazepine use in Belgian nursing homes, with specific attention to indications and dosages. (2) To compare actual and recommended dosages of benzodiazepines for anxiety and insomnia. (3) To explore the risk profile for chronic benzodiazepine use in institutionalised older adults. METHODS: Medication charts of 1,730 residents from 76 nursing homes in Belgium were collected and analysed, using the ATC classification. Drug name, indication and daily dosage were recorded. From authoritative international sources, we extracted for each drug and each indication a daily dosage recommended not to be exceeded in older adults for comparison with observed actual dosages. RESULTS: Among the chronic benzodiazepine or z-drug (BZD/Z) users (50% of the residents), the leading indication was 'insomnia' (59% of the users) followed by 'anxiety' (17%) and 'unrest' (10%). In the chronic prescriptions of BZD/Zs indicated for insomnia, the actual daily dose exceeded the geriatric upper limit in 95% of lormetazepam prescriptions, 82% of zolpidem, 78% of zopiclone and 35% of lorazepam prescriptions. For anxiety, daily doses also exceeded the limit but not to the same extent. Multivariate analysis showed BZD/Z use was positively associated with pain (OR 1.58, 95% CI 1.27-1.97), constipation (OR 1.43, 95% CI 1.16-1.76) and depression (OR 1.68, 95% CI 1.35-2.08). Residents with dementia were less likely to receive a BZD/Z (OR 0.60, 95% CI 0.48-0.74). CONCLUSION: Efforts to reduce the use of BZD/Zs in nursing homes should concentrate on insomnia, with interventions aimed at reducing too high prevalence of chronic use and too high daily dosages in this indication.

Nurse-led education and counselling to enhance adherence to phosphate binders.

AIMS AND OBJECTIVES: To investigate whether nurse-led education and counselling enhance phosphate binder adherence in chronic dialysis patients. BACKGROUND: One in two chronic dialysis patients experiences difficulties in adhering to phosphate binders. The reasons for non-adherence are multifactorial and accordingly require a multifaceted strategy. To date, investigations have been confined primarily to single interventions to promote adherence. This study examines the effect of a multifaceted approach. DESIGN: The design was interventional. METHOD: Adherence to phosphate binders was blindly and electronically monitored for 17 consecutive weeks with the Medication Event Monitoring System (MEMS). After four weeks baseline monitoring, the effects of the intervention were studied for an additional 13 weeks. In week 5, the study nurse gave all 41 participating patients education on phosphate binders. Thereafter, the study nurse gave bi-weekly personalised counselling to enhance adherence to phosphate binders. The evolution of adherence over time was assessed and compared with historical control data. Secondary outcome variables included serum values of phosphate, calcium and parathyroid hormone and phosphate binder knowledge. RESULTS: In week 1, mean adherence was 83% in this study (intervention group), compared with 86% in the historical control group. In the intervention group, mean adherence increased from 83-94% after 13 weeks. By contrast, in the historical control group, mean adherence declined from 86-76%. In the intervention group, serum phosphate values decreased from 4·9-4·3 mg/dl and phosphate binder knowledge increased from a mean score of 53-75%. CONCLUSIONS: Combining education and continuous counselling holds promise in enhancing phosphate binder adherence. Large-scaled and long-term field studies are indicated to determine which nurse-led practices lead to an integral and sustained medication adherence management. RELEVANCE TO CLINICAL PRACTICE: Nursing strategies to scale up adherence should at least include educating patients and regularly reinforcing adherence behaviour.

Drug utilization research in Peru: Is real-world data available?

Background: Drug utilization research (DUR) is used to provide evidence-based data to inform policies and make decisions. The aim of this study was to map and describe available data sources for drug utilization research in Peru. Methods: We performed a search of data sources providing information on medication use on the website of governmental organizations. We also conducted a literature review using PubMed, LILACs, and BVS. Independently, researchers screened eligible data sources. Data characterization included accessibility, coverage data provider, type of data sources, and setting. We performed a descriptive analysis. Results: We identified seven data sources, CENAFyT, ICI, IDI (SISMED), and ENSUSALUD from MINSA, and CRI-ESSALUD, SGSS/ESSI, and ENSSA from ESSALUD. These presented information on adverse drug reactions (n = 2), drug consumption, and distribution (n = 2), prescription and drug dispensing (n = 1), and surveys addressed to medication users (n = 2). ENSUSALUD was the only data source publicly available. VIGIFLOW and ENSUSALUD have a national granularity from the public and private sectors. The setting of the data sources was both hospital and ambulatory care. Two data sources have individual-level data on adverse drug reactions and one on prescriptions. Four studies on drug utilization research in Peru were derived from ENSUSALUD. Conclusion: In Peru, few data sources are available for drug utilization research. There is an increased need to monitor medications for decision-making purposes. Local and international initiatives and partnerships of the government with academic institutions and the private sector might be a good strategy to increase the transparency of health data and for supporting decision-making using drug utilization research.

Barriers for nurses to safe medication management in nursing homes.

PURPOSE: This study aims to identify and compare the relevance of barriers that nurses in nursing homes experience in medication management in Belgium. DESIGN: The mixed-method study started with an expert meeting in November 2008 and was followed by a cross-sectional survey in February-March 2009, questioning 246 nurses and 270 nurse assistants in 20 nursing homes. METHODS: Twelve nurses represented nursing homes in an expert meeting and listed all barriers that might cause suboptimal medication management. Based on the results, a survey was developed in which respondents could indicate whether they were involved in a particular stage of the medication process and if yes, rate the relevance of the barriers in that stage on a continuous scale, varying from 1 =no barrier to 10 =strong barrier. Barriers scored 7 or more were defined as strong. FINDINGS: Nurses experienced a large number of barriers to safe medication management related to the nurse, organization, interdisciplinary cooperation, or to the patient and family. In preparing medication, medication administration and monitoring, being interrupted, not knowing enough on interactions, and barriers in interdisciplinary cooperation caused the most hindrance. In general, barriers in medication monitoring scored the strongest. CONCLUSIONS: In order to improve safe medication management by tailored interventions in nursing homes, through the use of a standard questionnaire, nurses and nurse assistants can give an overview of barriers they experience and rate their relevance. Nurses and nurse assistants had different opinions on the relevance of barriers, especially in the stage of medication monitoring. Job expectations in medication management were not always clear, creating additional barriers in medication safety. CLINICAL RELEVANCE: This study provides an overview of potential barriers to safe medication management in nursing homes, which can be addressed in practice. The relevance scoring of the barriers enables prioritization.

Renal replacement therapy is an independent risk factor for mortality in critically ill patients with acute kidney injury.

INTRODUCTION: Outcome studies in patients with acute kidney injury (AKI) have focused on differences between modalities of renal replacement therapy (RRT). The outcome of conservative treatment, however, has never been compared with RRT. METHODS: Nine Belgian intensive care units (ICUs) included all adult patients consecutively admitted with serum creatinine >2 mg/dl. Included treatment options were conservative treatment and intermittent or continuous RRT. Disease severity was determined using the Stuivenberg Hospital Acute Renal Failure (SHARF) score. Outcome parameters studied were mortality, hospital length of stay and renal recovery at hospital discharge. RESULTS: Out of 1,303 included patients, 650 required RRT (58% intermittent, 42% continuous RRT). Overall results showed a higher mortality (43% versus 58%) as well as a longer ICU and hospital stay in RRT patients compared to conservative treatment. Using the SHARF score for adjustment of disease severity, an increased risk of death for RRT compared to conservative treatment of RR = 1.75 (95% CI: 1.4 to 2.3) was found. Additional correction for other severity parameters (Acute Physiology And Chronic Health Evaluation II (APACHE II), Sequential Organ Failure Assessment (SOFA)), age, type of AKI and clinical conditions confirmed the higher mortality in the RRT group. CONCLUSIONS: The SHARF study showed that the higher mortality expected in AKI patients receiving RRT versus conservative treatment can not only be explained by a higher disease severity in the RRT group, even after multiple corrections. A more critical approach to the need for RRT in AKI patients seems to be warranted.

Drug utilization in Belgian nursing homes: impact of residents' and institutional characteristics.

PURPOSE: This study aims to investigate drug utilization in Belgian nursing homes in relation to the characteristics of residents and the institution. METHODS: A cross-sectional study design was used. A total of 2510 residents were randomly selected from a stratified random sample of 76 Belgian nursing homes with at least 30 beds, including high-intensity care beds. Data collection was based on medical chart review supplemented with clinical information from general practitioners (GPs) RESULTS: The residents included had a mean age of 85 and 77% were female. They presented a median of 2 clinical problems (range 0-10), three care problems (range 0-10) and 48% had dementia. Their medical consumption amounted to a mean of 8.4 prescriptions including 7.1 for chronic treatment. Mean expenditure per month for chronic medication was 140 EUR (SD 125), including 53 EUR out-of-pocket payment.This study confirmed that multiple comorbidity was associated with polypharmacy. After peaking in the seventh decade, medical consumption decreased in older age groups. In palliative care, the number of prescriptions decreased while expenditure increased. A marked decrease in prescriptions, particularly of pain-relieving medication, was observed with increasing dementia. Larger public institutions, with an active coordinating physician and served by hospital pharmacists, had lower consumption and expenditure. CONCLUSION: A high level of drug utilization, influenced by the characteristics of residents and the institution, was observed in Belgian nursing homes. There is a need to develop a comprehensive monitoring system of prescribing quality for nursing home residents.

Over-the-counter analgesic use.

Chronic analgesic nephropathy, particularly chronic interstitial nephritis and renal papillary necrosis, results from daily use for many years of mixtures containing at least two analgesics and caffeine or dependence-inducing drugs. Computed tomography scan can accurately diagnose this disease even in the absence of reliable information on previous analgesic use. The occasion to moderate regular use of aspirin and nonsteroidal anti-inflammatory drugs is without renal risk when renal function is normal. Paracetamol use is less clear although the risk is not great. The continued use of non-phenacetin-combined analgesics with or without nonsteroidal anti-inflammatory drugs is associated with faster progression toward renal impairment. As long as high-risk analgesic mixtures are available over the counter, analgesic nephropathy will continue to be a problem.

Intermittent versus continuous renal replacement therapy for acute kidney injury patients admitted to the intensive care unit: results of a randomized clinical trial.

BACKGROUND: There is uncertainty on the effect of different dialysis modalities for the treatment of patients with acute kidney injury (AKI), admitted to the intensive care unit (ICU). This controlled clinical trial performed in the framework of the multicentre SHARF 4 study (Stuivenberg Hospital Acute Renal Failure) aimed to investigate the outcome in patients with AKI, stratified according to severity of disease and randomized to different treatment options. METHODS: This was a multicentre prospective randomized controlled trial with stratification according to severity of disease expressed by the SHARF score. ICU patients were eligible for inclusion when serum creatinine was >2 mg/dL, and RRT was initiated. The selected patients were randomized to intermittent (IRRT) or continuous renal replacement therapy (CRRT). RESULTS: A total of 316 AKI patients were randomly assigned to IRRT (n = 144) or CRRT (n = 172). The mean age was 66 (range 18-96); 59% were male. Intention-to-treat analysis revealed a mortality of 62.5% in IRRT compared to 58.1% in CRRT (P = 0.430). No difference between IRRT and CRRT could be observed in the duration of ICU stay or hospital stay. In survivors, renal recovery at hospital discharge was comparable between both groups. Multivariate analysis, including the SHARF score, APACHE II and SOFA scores for correction of disease severity, showed no difference in mortality between both treatment modalities. This result was confirmed in pre-specified subgroup analysis (elderly, patients with sepsis, heart failure, ventilation) and after exclusion of possible confounders (early mortality, delayed ICU admission). CONCLUSIONS: Modality of RRT, either CRRT or IRRT, had no impact on the outcome in ICU patients with AKI. Both modalities need to be considered as complementary in the treatment of AKI (Clinical Trial: SHARF 4, NCT00322933, http://ClinicalTrials.gov).

Risk factors for delirium in intensive care patients: a prospective cohort study.

INTRODUCTION: Delirium is a common complication in the intensive care unit. The attention of researchers has shifted from the treatment to the prevention of the syndrome necessitating the study of associated risk factors. METHODS: In a multicenter study at one university hospital, two community hospitals and one private hospital, all consecutive newly admitted adult patients were screened and included when reaching a Glasgow Coma Scale greater than 10. Nurse researchers assessed the patients for delirium using the NEECHAM Confusion Scale. Risk factors covered four domains: patient characteristics, chronic pathology, acute illness and environmental factors. Odds ratios were calculated using univariate binary logistic regression. RESULTS: A total population of 523 patients was screened for delirium. The studied factors showed some variability according to the participating hospitals. The overall delirium incidence was 30%. Age was not a significant risk factor. Intensive smoking (OR 2.04), daily use of more than three units of alcohol (OR 3.23), and living alone at home (OR 1.94), however, contributed to the development of delirium. In the domain of chronic pathology a pre-existing cognitive impairment was an important risk factor (OR 2.41). In the domain of factors related to acute illness the use of drains, tubes and catheters, acute illness scores, the use of psychoactive medication, a preceding period of sedation, coma or mechanical ventilation showed significant risk with odds ratios ranging from 1.04 to 13.66. Environmental risk factors were isolation (OR 2.89), the absence of visit (OR 3.73), the absence of visible daylight (OR 2.39), a transfer from another ward (OR 1.98), and the use of physical restraints (OR 33.84). CONCLUSIONS: This multicenter study indicated risk factors for delirium in the intensive care unit related to patient characteristics, chronic pathology, acute illness, and the environment. Particularly among those related to the acute illness and the environment, several factors are suitable for preventive action.

Herpes simplex virus in the respiratory tract of critical care patients: a prospective study.

BACKGROUND: Herpes simplex virus (HSV) is occasionally detected in the lower respiratory tract of patients in intensive care, but its clinical importance in such situations remains unclear. We did a prospective cohort study to define the prevalence, origin, risk factors, and clinical relevance of HSV in the respiratory tract of patients undergoing critical care. METHODS: We tested 764 patients admitted to intensive care for the presence of HSV in the respiratory tract, and assessed statistical relations between this virus and clinical variables. FINDINGS: HSV was detected by oropharyngeal swab in the upper respiratory tract of 169 (22%) of 764 patients, within 10 days of admission for 150 (89%) of these individuals. The virus was isolated in 58 (16%) of 361 patients whose lower respiratory tract was sampled. The presence of HSV in the throat was a risk factor for development of HSV infections in the lower respiratory tract (p<0.001). HSV was isolated most frequently in patients with severe disease. HSV in the throat was associated with acute respiratory distress syndrome (p<0.001) and with increased length of stay in intensive care (p<0.001). INTERPRETATION: Our data suggest that HSV reactivation or infection of the upper respiratory tract is frequent among patients in intensive care, and is a risk factor for development of lower respiratory tract infection with this virus, possibly by means of aspiration.