Biomedical subjects

Frank L Zwemer

Publications and source records attributed to Frank L Zwemer.

11 recordsLinked to original sources

PubMed2005

Profiles in patient safety: misplaced femoral line guidewire and multiple failures to detect the foreign body on chest radiography.

This article uses a case report and discussion to demonstrate the concept of active and latent failures, and the "systems approach" to the reduction of adverse events in medicine. The case involves an inadvertently misplaced and retained guidewire during femoral vein catheterization using the Seldinger technique, and the subsequent failure to identify the guidewire in the chest despite several chest radiographs and a computed tomography (CT) scan read by radiologists, emergency physicians, and intensivists. This event reveals active failures in the performance of the Seldinger technique, latent failures in the design of the catheter kit, and problems with the current system of interpretation of radiographs. The authors conclude that the design of the catheter kit and the Seldinger technique should be critically examined from a human factors standpoint and that radiographic interpretation is still heavily subject to human error.

Adult↗

PubMed2004

Point of care pregnancy testing provides staff satisfaction but does not change ED length of stay.

Point of care testing (POCT) is widely viewed as possibly improving ED care and reducing length of stay (LOS). However reports are mixed, and regulatory barriers complicate considerations. We studied a simple urine pregnancy assay (human chorionic gonadotropin-HCG). LOS was evaluated when HCG was moved from central lab (HCGLab) to POCT (HCGED) in 2 pre-post 3-month periods (958 HCGLab and 1075 HCGED). HCG patients were compared with a similar control group, and staff perceptions were evaluated. There was no change in LOS for HCG patients (36.8 v 50.85 min, P = .33), although there was one marginal finding of improved LOS for patients presenting with abdominal pain diagnosed as pregnant (P = .17). Staff (28/53 physicians, 18/81 nurses) reported HCGED as positive. POCT does not improve LOS for broad groups of patients, although POCT does change the ED environment. Further study is needed to evaluate how the information flow of POCT changes patient care.

Emergency Service, Hospital↗

PubMed2004

The demands of 24/7 coverage: using faculty perceptions to measure fairness of the schedule.

OBJECTIVES: Ensuring fair, equitable scheduling of faculty who work 24-hour, 7-day-per-week (24/7) clinical coverage is a challenge for academic emergency medicine (EM). Because most emergency department care is at personally valuable times (evenings, weekends, nights), optimizing clinical work is essential for the academic mission. To evaluate schedule fairness, the authors developed objective criteria for stress of the schedule, modified the schedule to improve equality, and evaluated faculty perceptions. They hypothesized that improved equality would increase faculty satisfaction. METHODS: Perceived stress was measured for types of clinical shifts. The seven daily shifts were classified as weekday, weekend, or holiday (plus one unique teaching-conference coverage shift). Faculty assigned perceived stress to shifts (ShiftStress) utilizing visual analog scales (VAS). Faculty schedules were measured (ShiftScores) for two years (1998-1999), and ShiftScore distribution of faculty was determined quarterly. Schedules were modified (1999) to reduce interindividual ShiftScore standard deviation (SD). The survey was performed pre- and postintervention. RESULTS: Preintervention, 26 faculty (100% of eligible) assigned VAS to 22 shifts. Increased stress was perceived in progression (weekday data, 0-10 scale) from day to evening to night (2.07, 5.00, 6.67, respectively) and from weekday to weekend to holiday (day-shift data, 2.07, 4.93, 5.87). The intervention reduced interindividual ShiftScore SD by 21%. Postintervention survey revealed no change in perceived equality or satisfaction. CONCLUSIONS: Faculty perceived no improvement despite scheduling modifications that improved equality of the schedule and provided objective measures. Other predictors of stress, fairness, and satisfaction with the demanding clinical schedule must be identified to ensure the success of EM faculty.

Attitude of Health Personnel↗

PubMed2004

Where's the beef? The promise and the reality of clinical documentation.

Physician-generated emergency department clinical documentation (information obtained from clinician observations and summarized decision processes inclusive of all manner of electronic systems capturing, storing, and presenting clinical documentation) serves four purposes: recording of medical care and communication among providers; payment for hospital and physician; legal defense from medical negligence allegations; and symptom/disease surveillance, public health, and research functions. In the consensus development process described by Handler, these objectives were balanced with the consideration of efficiency, often evaluated as physician time and clinical documentation system costs, in recording the information necessary for their accomplishment. The consensus panel session participants and authors recommend that 1) clinical documentation be electronically retrievable; 2) selection and implementation be evidence-based and grounded on valid metrics (research is needed to identify these metrics); 3) the user interface be crafted to promote clinical excellence through high-quality information collection and efficient charting techniques; 4) the priorities for integration of clinical information be standardized and implemented within enterprises and across health and information systems; 5) systems use accepted standards for bidirectional, real-time clinical data exchange, without limiting the location or number of simultaneous users; 6) systems fully utilize existing electronic sources of specific patient information and general medical knowledge; 7) systems automatically and reliably capture appropriate data that support electronic billing for emergency department services; and 8) systems promote bedside documentation and mobile access.

Documentation↗

PubMed2004

Emergency department digital radiology: moving from photos to pixels.

Emergency department (ED) patient care relies heavily on radiologic imaging. As advances in technologic innovation continue to present opportunities to streamline and simplify the delivery of care, emergency medicine (EM) practitioners face the challenge of transitioning from a system of primarily film-based radiography to one that utilizes digitized images. The move to digital radiology can result in enhanced quality of patient care, reduction of errors, and increased ED efficiency; however, making this transition will necessarily involve changes in EM practice. As the technology evolves, digital radiology will gradually become ingrained into everyday practice because of these and other notable benefits; however, EM practitioners will need to overcome several challenges to make the transition smoothly and consider the potential impacts that this change will have on ED workflow. The authors discuss the benefits, challenges, and other operational considerations involved with the ED implementation of digital radiology and close by presenting guiding principles for current and future users. Despite the unresolved issues, digital radiology will mature as a technology and improve EM practice, making it one of the great information technology advances in EM.

Diagnostic Imaging↗

PubMed2003

Coping with a crowded ED: an expanded unique role for midlevel providers.

Crowding in the emergency department (ED) has multiple causes, including space and staffing in both inpatient areas and the ED. Waiting for inpatient beds is the primary issue in our ED. Waiting inpatients require continuing care and attention from emergency-medicine (EM) physicians. As a managerial response, we developed a unique role for midlevel practitioners (MLPs) in which they could provide "back-end" work for patients awaiting inpatient beds. After initial EM physician evaluation, patients without ready inpatient beds were grouped in the ED and their care was transferred to the transition team (TT). The TT consisted of an MLP (nurse practitioner or physician assistant) and a registered nurse or licensed practical nurse, all reporting to ED supervisors. MLPs were readily available from the local medical professional market. The TT provided all patient care until a patient was seen by the admitting inpatient service or until the patient left for an inpatient unit. The major TT objectives were a reduction of EM physician work in caring for inpatients, and improved patient care. We demonstrated that the TT assumed a significant patient load, an indirect measure of reduced EM physician work, but this did not improve patient satisfaction. The TT clinical role is less desirable to MLPs than are other traditional clinical roles. The TT is a potentially available, incremental staffing resource for a crowded ED.

Continuity of Patient Care↗

PubMed2003

Emergency department crowding: a point in time.

STUDY OBJECTIVE: This is a pilot study designed to assess the feasibility of a point prevalence study to assess the degree of crowding in hospital emergency departments (EDs). In addition, we sought to measure the degree of physical crowding and personnel shortage in our sample. METHODS: A mail survey was sent to a random sample of 250 EDs chosen from a database compiled by the American College of Emergency Physicians of 5,064 EDs in the United States. In addition to demographic information, respondents were asked to count the patients and staff in their EDs at 7 PM local time on Monday, March 12, 2001 (index time). RESULTS: The response rate was 36%. At the index time, there was an average of 1.1 patients per treatment space, and 52% of EDs reported more than 1 patient per treatment space. There was also evidence of personnel shortage, with a mean of 4.2 patients per registered nurse and 49% of EDs having each registered nurse caring for more than 4 patients. There was a mean of 9.7 patients per physician. Sixty-eight percent of EDs had each physician caring for more than 6 patients. There was crowding present in all geographic areas and all hospital types (teaching-nonteaching status of the hospital). Consistent with the crowded conditions, 11% of institutions were on ambulance diversion and not accepting new acute patients. Delays in transfer of admitted patients out of the ED contributed to the physical crowding. Twenty-two percent of patients in the ED were already admitted and were awaiting transfer to an inpatient bed; 73% of EDs were boarding 2 or more inpatients. The amount of crowding quantified by this point prevalence study was confirmed by the amount of crowding reported for the previous week: 48% of EDs were boarding inpatients during the previous week for a mean of 8.9 hours, 4.2 days per week; 31% had been on diversion; 59% had been routinely using their halls for patients; 38% had been doubling their rooms; and 47% had been using nonclinical space for patient care. CONCLUSION: Our low response rate limits this pilot study. Nonetheless, this study, as well as others, demonstrates that EDs throughout the United States are severely crowded. Such crowding raises concerns about the ability of EDs to respond to mass casualty or volume surges.

Bed Occupancy↗

PubMed2003

An inexpensive modification of the laboratory computer display changes emergency physicians' work habits and perceptions.

STUDY OBJECTIVE: Little is known about how the availability of laboratory data affects emergency physicians' practice habits and satisfaction. We modified our clinical information system to display laboratory test status with continuous updates, similar to an airport arrival display. The objective of this study was to determine whether the laboratory test status display altered emergency physicians' work habits and increased satisfaction compared with the time period before implementation of laboratory test status. METHODS: A retrospective analysis was performed of emergency physicians' actual use of the clinical information system before and after implementation of the laboratory test status display. Emergency physicians were retrospectively surveyed regarding the effect of laboratory test status display on their practice habits and clinical information system use. Survey responses were matched with actual use of the clinical information system. Data were analyzed by using dependent t tests and Pearson correlation coefficients. The study was conducted at a university hospital. RESULTS: Clinical information system use by 46 emergency physicians was analyzed. Twenty-five surveys were returned (71.4% of available emergency physicians). All emergency physicians perceived fewer clinical information system log ons per day after laboratory test status display. The actual average decrease was 19%. Emergency physicians who reported the greatest decrease in log ons per day tended to have the greatest actual decrease (r =-0.36). There was no significant correlation between actual and perceived total time logged on (r =0.08). In regard to effect on emergency physicians' practice habits, 95% reported increased efficiency, 80% reported improved satisfaction with data access, and 65% reported improved communication with patients. CONCLUSION: An inexpensive computer modification, laboratory test status display, significantly increased subjective efficiency, changed work habits, and improved satisfaction regarding data access and patient communication among emergency physicians. Knowledge of the test queue changed emergency physician behavior and improved satisfaction.

Clinical Laboratory Information Systems↗

PubMed2003

Clinical operations in academic emergency medicine.

The operations of an emergency department are increasingly being recognized as vital to the provision of safe, efficient, quality care. The numerous and highly variable processes that characterize our system must be closely examined and investigated to identify those which are effective and those which are not. Original research in this field should be promoted and embraced by our society for both our patients and our profession. Effective operational processes should ultimately be seen as those which preserve and enhance the patient-physician relationship.

Academic Medical Centers↗

PubMed2002

The effects of the absence of emergency medicine residents in an academic emergency department.

OBJECTIVE: What are the quality effects of an emergency medicine (EM) residency, and the associated 24/7 supervision of residents by faculty, in an academic emergency department (ED)? The authors evaluated activity and quality indicators when there were no EM residents present. The hypothesis of the study was that there was no difference between the patient care provided by faculty supervising EM residents and that with an alternative model without EM residents (AbsenceEMResident). METHODS: To support the weekly residency educational program (Thursday), EM residents are not scheduled clinically for a 24-hour period (ConfDay). Emergency medicine resident coverage (mean 62.7 hours) was replaced with incremental faculty and mid-level providers (mean 41.0 hours). This study was limited to adult patients (22,527 visits of 39,190 ED total) for six months (January-June 2001) and compared indicators for ConfDay (n = 23) with all other days (NotConfDay, n = 158). RESULTS: Comparing ConfDay (2,842 visits) with NotConfDay (19,685 visits), there was no difference in mean daily visits, inpatient admissions, intensive care unit admissions, or emergency medical services arrivals. ConfDay decision-to-admit time (333 vs. 313 min, p = 0.03) and length of stay for admissions (490 vs. 445 min, p = 0.000) were longer, with no difference for treat/release patients. There was no difference in the numbers of laboratory or radiology tests, consultations, unscheduled return visits, or patient satisfaction. CONCLUSION: During the study period, there was no measurable difference for most of the quality indicators studied. The AbsenceEMResident model is less efficient in admitting patients. Faculty supervision results in the same number of laboratory and radiology tests and consultations. Other specialties may consider this model if off-hours care becomes a concern.

Adult↗

PubMed2002

CT in detecting urinary tract calculi: influence on patient imaging and clinical outcomes.

PURPOSE: To determine changes in examination patterns and effectiveness of care since the introduction of unenhanced helical computed tomography (CT) for examination of patients presenting to the emergency department (ED) with symptoms of urinary tract calculi (UTC). MATERIALS AND METHODS: Hospital clinical and radiology information systems were used to retrospectively identify patients presenting with UTC symptoms from January to December 1997 (before introduction of unenhanced CT) and from January to December 1999 (after introduction of unenhanced CT). Chart abstraction was used to confirm the identification of patients with presenting symptoms suggestive of UTC and assess patient outcomes. Two hundred sixty-five patients presented before (1997) and 602 after (1999) unenhanced CT was introduced. Distributions of dichotomous variables were compared between the 1997 and 1999 groups by using logistic regression. Means were compared between the groups by using analysis of variance and mean total numbers of imaging studies by using Poisson regression. RESULTS: Total number of imaging studies increased by 26.7% per patient visit (P <.001). Rates of admission following the initial ED visit (13.7% in 1997 vs 13.4% in 1999), as well as percentage of patients who subsequently returned to the ED (12.0% in 1997 vs 13.7% in 1999) or subsequently were admitted to the hospital (4.5% in 1997 vs 5.3% in 1999) in the month following the initial ED visit, were similar between the two groups. Unsuspected unenhanced CT findings that could affect acute patient care were observed at 5.9% of examinations. CONCLUSION: Use of imaging for suspected UTC has increased markedly since the introduction of unenhanced CT, with little effect on acute care of patients in the ED.

Adolescent↗