Using information technology to reduce rates of medication errors in hospitals.
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Drug Prescriptions↗
Biomedical subjects
D W Bates
Publications and source records attributed to D W Bates.
Drug complications in outpatients.
OBJECTIVE: Outpatient drug complications have not been well studied. We sought to assess the incidence and characteristics of outpatient drug complications, identify their clinical and nonclinical correlates, and evaluate their impact on patient satisfaction. DESIGN: Retrospective chart reviews and patient surveys. SETTING: Eleven Boston-area ambulatory clinics. PATIENTS: We randomly selected 2,248 outpatients, 20 to 75 years old. MEASUREMENTS AND MAIN RESULTS: Among 2,248 patients reporting prescription drug use, 394 (18%) reported a drug complication. In contrast, chart review revealed an adverse drug event in only 64 patients (3%). In univariate analyses, significant correlates of patient-reported drug complications were number of medical problems, number of medications, renal disease, failure to explain side effects before treatment, lower medication compliance, and primary language other than English or Spanish. In multivariate analysis, independent correlates were number of medical problems (odds ratio [OR] 1.17; 95% confidence interval [95% CI] 1.05 to 1.30), failure to explain side effects (OR 1.65; 95% CI, 1.16 to 2.35), and primary language other than English or Spanish (OR 1.40; 95% CI, 1.01 to 1.95). Patient satisfaction was lower among patients who reported drug complications (P <.0001). In addition, 48% of those reporting drug complications sought medical attention and 49% experienced worry or discomfort. On chart review, 3 (5%) of the patients with an adverse drug event required hospitalization and 8 (13%) had a documented previous reaction to the causative drug. CONCLUSIONS: Drug complications in the ambulatory setting were common, although most were not documented in the medical record. These complications increased use of the medical system and correlated with dissatisfaction with care. Our results indicate a need for better communication about potential side effects of medications, especially for patients with multiple medical problems.
Adult↗
Identifying drug safety issues: from research to practice.
PURPOSE: Adverse drug events (ADEs), or injuries due to drugs, are common and often preventable. However, identifying ADEs, potential ADEs, and medication errors can be a major challenge. In this review, we describe methodologies that have been used to identify these events and give strategies for identification in non-study settings. RESULTS: Methods such as voluntary reporting, chart review, and computerized monitoring for events have been most commonly used in studies of ADEs in inpatients. However, voluntary reporting, the method most hospitals currently use, has a very low yield of events. Chart review is much more sensitive but the costs are prohibitive. Computerized monitoring for ADEs (using rules or triggers) is a high yield and relatively inexpensive strategy that should be adopted by organizations. A limitation of this strategy, however, is that it identifies few medication errors and potential ADEs, which are also important. These can be captured through pharmacy logs, chart review, and direct observation. Once events have been identified, they can be classified by type of event, severity, and preventability. In non-study settings, the most practical method for identifying ADEs is computerized monitoring, and for identifying prescribing errors it is pharmacy logs of interventions. Once problems are found, a structure (either individual or committee) must be in place to classify them, identify opportunities for improvement, and carry out the necessary changes. CONCLUSIONS: Health care organizations have the technology to significantly improve their detection of ADEs, medication errors, and potential ADEs. Identification and subsequent classification of events is crucial for quality efforts to improve patient safety.
Adverse Drug Reaction Reporting Systems↗
Can history and physical examination be used as markers of quality? An analysis of the initial visit note in musculoskeletal care.
BACKGROUND: The medical record serves as an important source of information regarding the care process, but few studies have examined whether thoroughness of documentation is associated with outcomes. OBJECTIVE: The objectives of this study were to analyze the initial visit note for 513 patients presenting with acute musculoskeletal pain, compare thoroughness of documentation by physician specialty, and determine whether thoroughness of documentation was associated with clinical improvement or patient satisfaction. METHODS: A structured medical record abstraction was performed to examine whether treating physicians documented key historical and physical exam findings. Satisfaction with care, symptom relief, and functional improvement were assessed after 3 months with validated survey instruments. RESULTS: In the initial visit note, 43+/-16% of selected historical findings and 28+/-17% of physical examination findings were documented. Orthopedic surgeons documented 2 to 4 more historical and physical examination items (P <0.01) and assigned more specific diagnoses (P <0.01) than rheumatologists and general internists. Multivariate models showed a very weak association between all aspects of documentation and patient satisfaction with the provider-patient interaction (all partial R2 <0.016) and no association between documentation and 3-month pain relief or functional status. Patients' perception of physician communication was more highly associated with patient satisfaction (P = 0.0001) than was documentation. CONCLUSIONS: No provider types consistently documented many important historical items and physical examination findings. While thoroughness of documentation was not associated with clinical outcomes, there was a very weak relationship between documentation and patient satisfaction with provider-patient interactions.
Acute Disease↗
Appropriateness of prostate-specific antigen testing.
We established criteria for appropriate use of the prostate-specific antigen (PSA) assay and used them to evaluate PSA test utilization at 1 tertiary care institution. During a 6-month period, 2,330 PSA results were reported for outpatients and 95 for inpatients. We reviewed medical records for a random sample of 338 outpatient results (14.51%) and all 95 inpatient results, of which 21% (71/338) of outpatient and 17% (16/95) of inpatient results were inappropriate according to our test utilization criteria. Among outpatients, 52% of tests were done for screening and 19% for monitoring for cancer recurrence. For inpatients, workup for cancer (53/95 [56%]) was the most frequent indication for testing and screening the second (24/95 [25%]). Of tests failing the criteria, 66 (76%) of 87 resulted from excessively frequent and age-inappropriate screening. We assessed the potential effect on clinical outcome if these tests were not performed. Of the 87 tests considered inappropriate, only 1 test result influenced clinical management for patients younger than 75 years. By instituting simple limits on age and frequency, we estimate that 74% (64/87) of the inappropriate tests could have been eliminated.
Adult↗
Using information systems to improve practice.
Information systems are becoming a key tool for improving and measuring practice. They can improve care by providing decision support during routine care, by making important information more readily accessible, by pointing out redundancies, by suggesting alternatives, and by making guidelines accessible. Key domains, which are particularly amenable to such decision support, include drug prescribing, test ordering and implementation of critical pathways. In addition to their role in quality improvement, information systems can accomplish most quality measurement if key data are captured in coded form during the provision of routine care. These changes can help close the gap between knowledge and practice and promise to make the practice of evidence-based medicine a reality.
Decision Support Systems, Clinical↗
Patient risk factors for adverse drug events in hospitalized patients. ADE Prevention Study Group.
BACKGROUND: Adverse drug events (ADEs) are common in hospitalized patients, but few empirical data are available regarding the strength of patient risk factors for ADEs. METHODS: We performed a nested case-control study within a cohort that included 4108 admissions to a stratified random sample of 11 medical and surgical units in 2 tertiary care hospitals during a 6-month period. Analyses were conducted on 2 levels: (1) using a limited set of variables available for all patients using computerized data available from 1 hospital and (2) using a larger set of variables for the case patients and matched controls from both hospitals. Case patients were patients with an ADE, and the matched control for each case patient was the patient on the same unit as the case patient with the most similar prevent length of stay. Main outcome measures were presence of an ADE, preventable ADE, or severe ADE. RESULTS: In the cohort analysis, electrolyte concentrates (odds ratio [OR], 1.7), diuretics (OR, 1.7), and medical admission (OR, 1.6) were independent correlates of ADEs. Independent correlates of preventable ADEs in the cohort analysis were low platelet count (OR, 4.5), antidepressants (OR, 3.3), antihypertensive agents (OR, 2.9), medical admission (OR, 2.2), and electrolyte concentrates (OR, 2.1). In the case-control analysis, exposure to psychoactive drugs (OR, 2.1) was an independent correlate of an ADE, and use of cardiovascular drugs (OR, 2.4) was independently correlated with severe ADEs. For preventable ADEs, no independent predictors were retained after multivariate analysis. CONCLUSIONS: Adverse drug events occurred more frequently in sicker patients who stayed in the hospital longer. However, after controlling for level of care and preevent length of stay, few risk factors emerged. These results suggest that, rather than targeting ADE-prone individuals, prevention strategies should focus on improving medication systems.
Adult↗
Pharmacist participation on physician rounds and adverse drug events in the intensive care unit.
CONTEXT: Pharmacist review of medication orders in the intensive care unit (ICU) has been shown to prevent errors, and pharmacist consultation has reduced drug costs. However, whether pharmacist participation in the ICU at the time of drug prescribing reduces adverse events has not been studied. OBJECTIVE: To measure the effect of pharmacist participation on medical rounds in the ICU on the rate of preventable adverse drug events (ADEs) caused by ordering errors. DESIGN: Before-after comparison between phase 1 (baseline) and phase 2 (after intervention implemented) and phase 2 comparison with a control unit that did not receive the intervention. SETTING: A medical ICU (study unit) and a coronary care unit (control unit) in a large urban teaching hospital. PATIENTS: Seventy-five patients randomly selected from each of 3 groups: all admissions to the study unit from February 1, 1993, through July 31, 1993 (baseline) and all admissions to the study unit (postintervention) and control unit from October 1, 1994, through July 7, 1995. In addition, 50 patients were selected at random from the control unit during the baseline period. INTERVENTION: A senior pharmacist made rounds with the ICU team and remained in the ICU for consultation in the morning, and was available on call throughout the day. MAIN OUTCOME MEASURES: Preventable ADEs due to ordering (prescribing) errors and the number, type, and acceptance of interventions made by the pharmacist. Preventable ADEs were identified by review of medical records of the randomly selected patients during both preintervention and postintervention phases. Pharmacists recorded all recommendations, which were then analyzed by type and acceptance. RESULTS: The rate of preventable ordering ADEs decreased by 66% from 10.4 per 1000 patient-days (95% confidence interval [CI], 7-14) before the intervention to 3.5 (95% CI, 1-5; P<.001) after the intervention. In the control unit, the rate was essentially unchanged during the same time periods: 10.9 (95% CI, 6-16) and 12.4 (95% CI, 8-17) per 1000 patient-days. The pharmacist made 366 recommendations related to drug ordering, of which 362 (99%) were accepted by physicians. CONCLUSIONS: The presence of a pharmacist on rounds as a full member of the patient care team in a medical ICU was associated with a substantially lower rate of ADEs caused by prescribing errors. Nearly all the changes were readily accepted by physicians.
Boston↗
Evaluating the appropriateness of digoxin level monitoring.
BACKGROUND: Digoxin level determinations can be useful clinically in patients receiving digoxin therapy but are sometimes misused. METHODS: Explicit appropriateness criteria were adapted from previously published criteria and revised using local expert opinion. They were then used to evaluate the appropriateness of random samples of inpatient and outpatient serum digoxin levels. Overall agreement between reviewers regarding appropriateness was good (K = 0.65). Patients in the study included 162 inpatients in whom 224 digoxin levels were measured and 117 outpatients in whom 130 digoxin levels were measured during a 6-month period. The main outcome measure was the proportion of digoxin levels with an appropriate indication. RESULTS: Among inpatient levels, only 16% (95% confidence intervals [CI], 11%-20%) were appropriate. Of the 189 digoxin levels considered inappropriate, only 26 (14%) had a result of 2.3 nmol/L or more (> or =1.8 ng/ mL). None of these levels resulted in an important change in therapy, and no patient had a toxic reaction to the therapy. Among inappropriate levels, daily routine monitoring accounted for 78%. Of the 130 outpatient levels, 52% (95% CI, 44%-61%) were appropriate. Of 62 inappropriate levels, only 4 (6%) had a result of 2.3 nmol/L or more (> or =1.8 ng/mL). One result led to a change in therapy, but none of the patients were believed to experience a toxic reaction. Among the inappropriate levels, 87% of patients underwent early routine monitoring before a steady state was achieved. CONCLUSIONS: A high proportion of digoxin levels were inappropriate, particularly among inpatients. In both groups, the primary reason tests were judged inappropriate was early routine monitoring. Few inappropriate tests resulted in important data. Interventions to improve the use of digoxin levels could potentially save substantial resources without missing important clinical results.
Aged↗
Development and validation of a patient satisfaction scale for musculoskeletal care.
OBJECTIVE: To test the hypothesis that 3 distinct domains of patient satisfaction with musculoskeletal care--satisfaction with the office environment, provider-patient interaction, and treatment outcomes--can be measured reliably and, when considered separately, are more valid indicators of satisfaction than global measures. METHODS: Three hundred ninety-nine outpatients who presented with knee or shoulder pain were enrolled in a prospective cohort study. We measured patient satisfaction with musculoskeletal care by adapting a widely used generic satisfaction survey. RESULTS: Each domain of the scale was internally consistent, with Cronbach's alphas for satisfaction with the office environment, provider-patient interaction, and treatment outcome subscales of 0.68, 0.95, and 0.93, respectively. Validity correlations demonstrated the greater specificity of the subscales than global measures for particular aspects of musculoskeletal care. CONCLUSIONS: The musculoskeletal-specific satisfaction scale has excellent reliability and good discriminant validity. From a policy perspective, the distinct subscale structure is critical because problems within each domain may have different remedies.
Discriminant Analysis↗
A randomized trial of a computer-based intervention to reduce utilization of redundant laboratory tests.
PURPOSE: To determine the impact of giving physicians computerized reminders about apparently redundant clinical laboratory tests. SUBJECTS AND METHODS: We performed a prospective randomized controlled trial that included all inpatients at a large teaching hospital during a 15-week period. The intervention consisted of computerized reminders at the time a test was ordered that appeared to be redundant. Main outcome measures were the proportions of clinical laboratory orders that were canceled and the proportion of the tests that were actually performed. RESULTS: During the study period, there were 939 apparently redundant laboratory tests among the 77,609 study tests that were ordered among the intervention (n = 5,700 patients) and control (n = 5,886 patients) groups. In the intervention group, 69% (300 of 437) of tests were canceled in response to reminders. Of 137 overrides, 41% appeared to be justified based on chart review. In the control group, 51% of ordered redundant tests were performed, whereas in the intervention group only 27% of ordered redundant tests were performed (P <0.001). However, the estimated annual savings in laboratory charges was only $35,000. This occurred because only 44% of redundant tests performed had computer orders, because only half the computer orders were screened for redundancy, and because almost one-third of the reminders were overridden. CONCLUSIONS: Reminders about orders for apparently redundant laboratory tests were effective when delivered. However, the overall effect was limited because many tests were performed without corresponding computer orders, and many orders were not screened for redundancy.
Boston↗
Does a year make a difference? Changes in physician satisfaction and perception in an increasingly capitated environment.
BACKGROUND: Although capitation has become an increasingly common method of payment for heath care, little is known about changes in physician satisfaction as they become more experienced working in a capitated environment. METHODS: We surveyed the members of a physician hospital organization at an urban teaching hospital in the summers of 1996 and 1997. In 1996, fully capitated contracts covered <5% of patients under 65 years of age, but that figure increased to nearly 25% by 1997. We assessed physicians' satisfaction with their practice, compared satisfaction under fee-for-service and capitated payment, and evaluated ethical issues related to capitation. RESULTS: In 1996, we surveyed 587 physicians with direct patient care responsibilities, of whom 62% responded; 51% of 520 physicians responded in 1997. Overall satisfaction was 57% in 1996 and 71% in 1997. Among physicians who responded in both years, overall satisfaction was unchanged, but increases in satisfaction were noted for patient load (an increase of 0.5 points on a five-point scale, P <0.01), time to discuss patient needs (an increase of 0.3 points, P <0.01), and helpfulness of care coordination (an increase of 0.5 points, P = 0.02). In a direct comparison between fee-for-service and capitation, physicians were more satisfied with both methods of payment in 1997 than they were in 1996, but they were much more satisfied with fee-for-service in both years. For many individual indicators, the difference in satisfaction between fee-for-service and capitation increased between 1996 and 1997. CONCLUSION: When introduced to capitation, physicians had strong negative perceptions about it. After a year's experience, satisfaction with capitation improved, but perceived differences between capitation and fee-for-service grew even larger. Thus, physicians have serious concerns about capitation that may not be alleviated by experience with it.
Attitude of Health Personnel↗
The Brigham integrated computing system (BICS): advanced clinical systems in an academic hospital environment.
The Brigham integrated computing system (BICS) provides nearly all clinical, administrative, and financial computing services to Brigham and Women's Hospital, an academic tertiary-care hospital in Boston. The BICS clinical information system includes a very wide range of data and applications, including results review, longitudinal medical records, provider order entry, critical pathway management, operating-room dynamic scheduling, critical-event detection and altering, dynamic coverage lists, automated inpatient summaries, and an online reference library. BICS design emphasizes direct physician interaction and extensive clinical decision support. Impact studies have demonstrated significant value of the system in preventing adverse events and in saving costs, particularly for medications.
Computer Security↗
A computer-based outpatient clinical referral system.
The process of generating a clinical referral for a patient, and the resulting transfer of information from the primary care physician to the specialist and back again, are key components in the struggle to deliver less costly and more effective clinical care. We have created a computer-based, outpatient clinical referral application that facilitates: (1) identifying an appropriate specialist; (2) collecting the clinical, demographic, and financial data required to generate a referral; and (3) transferring the information between the specialist and the primary care physician (PCP). This article describes the development of the application itself and several of the knowledge bases that were created to facilitate this process. Preliminary results indicate that the new computer-based referral process is faster to use than conventional methods.
Ambulatory Care↗
Screening for adverse events.
Adverse events (AEs) in medical patients are common, costly, and often preventable. Development of quality improvement programs to decrease the number and impact of AEs demands effective methods for screening for AEs on a routine basis. Here we describe the impact, types, and potential causes of AEs and review various techniques for identifying AEs. We evaluate the use of generic screening criteria in detail and describe a recent study of the sensitivity and specificity of individual generic screening criteria and combinations of these criteria. In general, the most sensitive screens were the least specific and no small sub-set of screens identified a large percentage of adverse events. Combinations of screens that were limited to administrative data were the least expensive, but none were particularly sensitive, although in practice they might be effective since routine screening is currently rarely done. As computer systems increase in sophistication sensitivity will improve. We also discuss recent studies that suggest that programs that screen for and identify AEs can be useful in reducing AE rates. While tools for identifying AEs have strengths and weaknesses, they can play an important role in organizations' quality improvement portfolios.
Adverse Drug Reaction Reporting Systems↗
Frequency, consequences and prevention of adverse drug events.
Iatrogenic injuries are important because they are frequent and many may be preventable; those caused by therapeutic drugs are among the most frequent. While medication errors are common, most have little potential for harm. However, some errors, such as giving a patient a drug to which they have a known allergy, are more likely to cause injury. Error theory provides insights into the changes required to reduce medication error injury rates. Data from the Adverse Drug Event (ADE) Prevention study suggest that most serious errors occur at the ordering and dispensing stages, while another, smaller, proportion occur at the administration stage. These data suggest that physician computer-order entry, where physicians write orders on-line with decision support, including patient-specific information and alerts about potential problems, has the potential to significantly reduce the number of serious medication errors.
Australia↗
Capitation and its effects on physician satisfaction.
OBJECTIVE: Capitation is an increasingly common method of paying physicians, but few data exist on its impact on physician satisfaction. This study examines the perceived effects of capitation on physician satisfaction at a large, academic medical center. STUDY DESIGN: Survey of physicians at a single, tertiary care hospital. METHODS: Physicians in a physician hospital organization were surveyed at an urban teaching hospital which received capitation for 5% of patients at the time of the survey but was preparing for a sharp increase in capitation. We used a 5-point Likert scale to assess physicians' satisfaction with their practice, and to compare satisfaction under fee-for-service and expected satisfaction under capitation. RESULTS: Of the 734 physicians surveyed, 147 were excluded because they had no direct patient care responsibilities. Of the remaining 587 physicians, 363 replied, giving a response rate of 62%. Overall, 57% of physicians were satisfied with their practice. Compared to their satisfaction under fee-for-service reimbursement, they were much less satisfied with their ability to care for capitated patients (17 of 19 questions, p < 0.05). The greatest differences were for freedom to order necessary tests and freedom to obtain referrals (0.9 and 0.8 on the 5-point scale, respectively, both p < 0.0001). Multiple logistic regression analyses revealed four independent predictors of overall satisfaction: patient load (OR = 2.7, 95% CI = 1.9-3.9), efficiency in resource utilization (OR = 1.5, 95% CI = 1.1-2.1), perceived employment stability (OR = 1.7, 95% CI = 1.3-2.2), and control over clinical time schedule (OR = 1.6, 95% CI = 1.2-2.0). CONCLUSIONS: Physicians initially encountering capitation payment have strong negative perceptions about it, even for areas in which some policy experts expect capitation to benefit patient care. Physician education and focusing on management relations may help smooth the transition to capitated reimbursement.
Academic Medical Centers↗
An institution-based process to ensure clinical software quality.
Clinical software can have a major impact on the delivery of care. It is imperative that clinical software undergo regular quality review, to evaluate the clinical correctness of the specification, the technical correctness of the software, problems that have arisen, and maintenance of the software as conditions change. We have developed a process using existing hospital review groups to perform clinical review, and using a project specification form and analysis of likely problem areas to effect technical review.
Hospital Information Systems↗