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1.
John B. Harringa Rebecca L. Bracken Scott K. Nagle Mark L. Schiebler Brian W. Patterson James E. Svenson Michael D. Repplinger 《The American journal of emergency medicine》2017,35(1):146-149
Objective
Our aim was to validate the previously published claim of a positive relationship between low blood hemoglobin level (anemia) and pulmonary embolism (PE).Methods
This was a retrospective study of patients undergoing cross-sectional imaging to evaluate for PE at an academic medical center. Patients were identified using billing records for charges attributed to either magnetic resonance angiography or computed tomography angiography of the chest from 2008 to 2013. The main outcome measure was mean hemoglobin levels among those with and without PE. Our reference standard for PE status included index imaging results and a 6-month clinical follow-up for the presence of interval venous thromboembolism, conducted via review of the electronic medical record. Secondarily, we performed a subgroup analysis of only those patients who were seen in the emergency department. Finally, we again compared mean hemoglobin levels when limiting our control population to an age- and sex-matched cohort of the included cases.Results
There were 1294 potentially eligible patients identified, of whom 121 were excluded. Of the remaining 1173 patients, 921 had hemoglobin levels analyzed within 24 hours of their index scan and thus were included in the main analysis. Of those 921 patients, 107 (11.6%; 107/921) were positive for PE. We found no significant difference in mean hemoglobin level between those with and without PE regardless of the control group used (12.4 ± 2.1 g/dL and 12.3 ± 2.0 g/dL [P = .85], respectively).Conclusions
Our data demonstrated no relationship between anemia and PE. 相似文献2.
Robert F. Riley Chadwick D. Miller Gregory B. Russell Erin N. Harper Brian C. Hiestand James W. Hoekstra Cedric W. Lefebvre Bret A. Nicks David M. Cline Kim L. Askew Simon A. Mahler 《The American journal of emergency medicine》2017,35(1):77-81
Introduction
The HEART Pathway is a diagnostic protocol designed to identify low-risk patients presenting to the emergency department with chest pain that are safe for early discharge. This protocol has been shown to significantly decrease health care resource utilization compared with usual care. However, the impact of the HEART Pathway on the cost of care has yet to be reported.Methods and Results
We performed a cost analysis of patients enrolled in the HEART Pathway trial, which randomized participants to either usual care or the HEART Pathway protocol. For low-risk patients, the HEART Pathway recommended early discharge from the emergency department without further testing. We compared index visit cost, cost at 30 days, and cardiac-related health care cost at 30 days between the 2 treatment arms. Costs for each patient included facility and professional costs. Cost at 30 days included total inpatient and outpatient costs, including the index encounter, regardless of etiology. Cardiac-related health care cost at 30 days included the index encounter and costs adjudicated to be cardiac-related within that period.Two hundred seventy of the 282 patients enrolled in the trial had cost data available for analysis. There was a significant reduction in cost for the HEART Pathway group at 30 days (median cost savings of $216 per individual), which was most evident in low-risk (Thrombolysis In Myocardial Infarction score of 0-1) patients (median savings of $253 per patient) and driven primarily by lower cardiac diagnostic costs in the HEART Pathway group.Conclusions
Using the HEART Pathway as a decision aid for patients with undifferentiated chest pain resulted in significant cost savings. 相似文献3.
Jasper H. van Lieshout Iris Bruland Igor Fischer Jan F. Cornelius Marcel A. Kamp Bernd Turowski Angelo Tortora Hans-Jakob Steiger Athanasios K. Petridis 《The American journal of emergency medicine》2017,35(1):45-50
Background
Time has shown to be a relevant factor in the prognosis for a multitude of clinical conditions. The current analysis aimed to establish whether delayed admission to specialized care is a risk factor for increased mortality in case of high-grade aneurysmal subarachnoid hemorrhage.Material and methods
Consecutive patients with aneurysmal subarachnoid hemorrhage were enrolled retrospectively if they had a World Federation of Neurological Surgeons Grading System grade of 5. Predictor variables for in-hospital mortality reflecting demographic, spatial, temporal treatment, and neurological factors were recorded from hospital medical records and emergency physicians' reports. We performed statistical analysis on the influence between the predictor variables and in-hospital mortality.Results
The study included 61 patients with an average age of 58 years. The overall in-hospital mortality rate was 28% (17/61 patients). A delayed transport to specialized neurosurgical care was associated with increased in-hospital mortality. Transportation time was mainly prolonged in cases where an alternative diagnosis was made by the emergency physician. Mortality was highest in patients with cardiovascular complications of subarachnoid hemorrhage.Conclusion
Delayed admission to specialized care is associated with a higher mortality rate in patients with high-grade aneurysmal subarachnoid hemorrhage. Accompanying non-neurosurgical, mainly cardiac complications might be a significant factor leading to delayed admission. The emergency physician should be aware that cardiovascular abnormalities are a relevant complication and sometimes the first identified clinical feature of high-grade subarachnoid hemorrhage. 相似文献4.
Mehmet Ali Aslaner Mustafa Boz Ali Çelik Asliddin Ahmedali Sercan Eroğlu Nalan Metin Aksu Serkan Emre Eroğlu 《The American journal of emergency medicine》2017,35(1):71-76
Objectives
Altered mental status (AMS) is a challenging diagnosis in older patients and has a large range of etiologies. The aim of this study was to investigate the nature of such etiologies for physicians to be better aware of AMS backgrounds and hence improve outcomes and mortality rates.Methods
This prospective observational study was conducted at 4 emergency departments. Patients 65 years and older who presented to the emergency department with acute AMS (≤1 week), with symptoms ranging from comas and combativeness, were eligible for inclusion in this study. The outcomes, etiologies, Richmond Agitation and Sedation Scale scores, and the presence of delirium were recorded.Results
Among 822 older patients with AMS, infection (39.5%) and neurological diseases (36.5%) were the most common etiologies. The hospital admission and mortality rates were 73.7% (n = 606) and 24.7% (n = 203), respectively. The mortality rate rose if AMS persisted for more than 3 days. Delirium was observed in 55.7% of the patients; these individuals had higher durations of AMS than those without delirium (median, 24 hours; interquartile range, 3-48 hours; median 6 hours, interquartile range, 3-48 hours, respectively; P = .010). Notably, delirium was observed in more than two-thirds of neurological patients.Conclusions
The most common causes of AMS were infection and neurological diseases. Delirium was associated with AMS in nearly half the patients. Moreover, the rates of hospitalization and mortality remained high. 相似文献5.
Kyoung Min You Chiwon Lee Woon Yong Kwon Jung Chan Lee Gil Joon Suh Kyung Su Kim Min Ji Park Sungwan Kim 《The American journal of emergency medicine》2017,35(2):292-298
Purpose
We performed this study to investigate whether real-time tidal volume feedback increases optimal ventilation and decreases hyperventilation during manikin-simulated cardiopulmonary resuscitation (CPR).Basic procedures
We developed a new real-time tidal volume monitoring device (TVD) which estimated tidal volume in real time using a magnetic flowmeter. The TVD was validated with a volume-controlled mechanical ventilator with various tidal volumes. We conducted a randomized, crossover, manikin-simulation study in which 14 participants were randomly divided into a control (without tidal volume feedback, n = 7) and a TVD group (with real-time tidal volume feedback, n = 7) and underwent manikin simulation. The optimal ventilation was defined as 420-490 mL of tidal volumes for a 70-kg adult manikin. After 2 weeks of the washout period, the simulation was repeated via the participants' crossover.Main findings
In the validation study, 97.6% and 100% of the difference ratios in tidal volumes between the mechanical ventilator and TVD were within ±1.5% and ±2.5%, respectively. During manikin-simulated CPR, TVD use increased the proportion of optimal ventilation per person. Its median values (range) of the control group and the TVD group were 37.5% (0.0-65.0) and 87.5% (65.0-100.0), respectively, P < .001). TVD use also decreased hyperventilation. The proportions of hyperventilation in the control group and the TVD group were 25.0% vs 8.9%, respectively (P < .001).Principal conclusions
Real-time tidal volume feedback using the new TVD guided the rescuers to provide optimal ventilation and to avoid hyperventilation during manikin-simulated CPR. 相似文献6.
Introduction
Bedside ultrasound measurement of optic nerve sheath diameter (ONSD) is emerging as a non-invasive technique to evaluate and predict raised intracranial pressure (ICP). It has been shown in previous literature that ONSD measurement has good correlation with surrogate findings of raised ICP such as clinical and radiological findings suggestive of raised ICP.Objectives
The objective of the study is to find a correlation between sonographic measurements of ONSD value with ICP value measured via the gold standard invasive intracranial ICP catheter, and to find the cut-off value of ONSD measurement in predicting raised ICP, along with its sensitivity and specificity value.Methods
A prospective observational study was performed using convenience sample of 41 adult neurosurgical patients treated in neurosurgical intensive care unit with invasive intracranial pressure monitoring placed in-situ as part of their clinical care. Portable SonoSite ultrasound machine with 7 MHz linear probe were used to measure optic nerve sheath diameter using the standard technique. Simultaneous ICP readings were obtained directly from the invasive monitoring.Results
Seventy-five measurements were performed on 41 patients. The non-parametric Spearman correlation test revealed a significant correlation at the 0.01 level between the ICP and ONSD value, with correlation coefficient of 0.820. The receiver operating characteristic curve generated an area under the curve with the value of 0.964, and with standard error of 0.22. From the receiver operating characteristic curve, we found that the ONSD value of 5.205 mm is 95.8% sensitive and 80.4% specific in detecting raised ICP.Conclusions
ONSD value of 5.205 is sensitive and specific in detecting raised ICP. Bedside ultrasound measurement of ONSD is readily learned, and is reproducible and reliable in predicting raised ICP. This non-invasive technique can be a useful adjunct to the current invasive intracranial catheter monitoring, and has wide potential clinical applications in district hospitals, emergency departments and intensive care units. 相似文献7.
Melissa K. James Sebastian D. Schubl Michael P. Francois Geoffrey K. Doughlin Shi-Wen Lee 《The American journal of emergency medicine》2017,35(1):13-19
Study Objective
The aim of this study is to determine if the introduction of a pan-scan protocol during the initial assessment for blunt trauma activations would affect missed injuries, incidental findings, treatment times, radiation exposure, and cost.Methods
A 6-month prospective study was performed on patients with blunt trauma at a level 1 trauma center. During the last 3 months of the study, a pan-scan protocol was introduced to the trauma assessment. Categorical data were analyzed by Fisher exact test and continuous data were analyzed by Mann-Whitney nonparametric test.Results
There were a total of 220 patients in the pre–pan-scan period and 206 patients during the pan-scan period. There was no significant difference in injury severity or mortality between the groups. Introduction of the pan-scan protocol substantially reduced the incidence of missed injuries from 3.2% to 0.5%, the length of stay in the emergency department by 68.2 minutes (95% confidence interval [CI], ?134.4 to ?2.1), and the mean time to the first operating room visit by 1465 minutes (95% CI, ?2519 to ?411). In contrast, fixed computed tomographic scan cost increased by $48.1 (95% CI, 32-64.1) per patient; however, total radiology cost per patient decreased by $50 (95% CI, ?271.1 to 171.4). In addition, the rate of incidental findings increased by 14.4% and the average radiation exposure per patient was 8.2 mSv (95% CI, 5.0-11.3) greater during the pan-scan period.Conclusion
Although there are advantages to whole-body computed tomography, elucidation of the appropriate blunt trauma patient population is warranted when implementing a pan-scan protocol. 相似文献8.
Kyoung-Chul Cha Yong Won Kim Hyung Il Kim Oh Hyun Kim Yong Sung Cha Hyun Kim Kang Hyun Lee Sung Oh Hwang 《The American journal of emergency medicine》2017,35(1):117-121
Objectives
We analyzed chest computed tomographic scan to evaluate parenchymal lung injury and its clinical significance in patients who received standard cardiopulmonary resuscitation and were resuscitated from cardiac arrest.Methods
We enrolled nontraumatic out-of-hospital cardiac arrest patients older than 19 years who had been admitted to the emergency department in cardiac arrest and successfully resuscitated after cardiopulmonary resuscitation. Chest computed tomography was obtained immediately after return of spontaneous circulation (ROSC). To allocate the area of lung contusion, we divided both hemithoraces into 3 regions longitudinally, and each part was subdivided into 4 segments except the lower part of the left lung. To stratify the severity of lung contusion, each segment was scored depending on the area of lung contusion. Oxygen index (OI) was measured at the time of ROSC, 24, 48, and 72 hours and 1 week after cardiac arrest.Results
Lung contusion was developed in 37 (41%) patients and median lung contusion score (LCS) was 17 (12-26). Lung contusion was not associated with hospital mortality (P = .924) or length of intensive care unit stay (P = .446). The OI at the time of ROSC was lower in patients with LCS greater than 23 than that in patients with LCS less than or equal to 23 (126 [93-224] vs 278 [202-367]; P = .008); however, the OI at the other timelines was not different between patients with LCS greater than 23 and patients with LCS less than or equal to 23.Conclusion
Extensive lung contusion is associated with a lower oxygenation index at the time of ROSC, but did not affect the resuscitation outcome. 相似文献9.
Ying Wang Wei Guo Dawei Gao Guoxing You Bo Wang Gan Chen Lian Zhao Jingxiang Zhao Hong Zhou 《The American journal of emergency medicine》2017,35(2):317-321
Background
Several kinds of crystalloid solutions have been used in the treatment of hemorrhagic shock (HS). Clinicians are faced with how to select the resuscitation fluids. The aim of the present study is to compare the effects of 3 crystalloid solutions, such as normal saline (NS), lactated Ringer's (LR), and Plasma-lyte A (PA), on acid-base status and intestine injury in rats subjected to HS.Methods
Thirty Wistar rats were divided into 4 groups. The sham group had no blood withdrawal. The other groups were subjected to severe HS and then injected with NS, LR, or PA. All treatments were followed with an infusion of red blood cell suspension. The mean arterial pressure was monitored throughout the experiment. The arterial blood gas, malonaldehyde, and myeloperoxidase levels in the small intestine were assayed 120 minutes after resuscitation.Results
Plasma-lyte A treatment could restore the pH, base excess (BE), HCO3?, Pao2, and Paco2. Comparing with sham group, NS failed to correct the decreased pH, BE, and HCO3? (P < .05), whereas LR treatment showed the decreased BE and HCO3? (P < .05) and increased Pao2 (P < .05). There were no significant differences in malonaldehyde among the 4 groups (P > .05). Both PA and LR were more effective than NS in decreasing the myeloperoxidase level in the small intestine (P < .01).Conclusions
Although the 3 crystalloid solutions play different roles, PA is better at correcting the acid-base balance and improving intestine injury during HS than NS and LR. 相似文献10.
Sean P. Wilson Taher Vohra McKenna Knych Jared Goldberg Christopher Price Sean Calo Meredith Mahan Joseph Miller 《The American journal of emergency medicine》2017,35(5):701-703
Introduction
Delay in current nucleic acid amplification testing for Neisseria gonorrhoeae and Chlamydia trachomatis has led to recommendations for presumptive treatment in patients with concern for infection and unreliable follow-up. In the urban setting, it is assumed that many patients have unreliable follow-up, therefore presumptive therapy is thought to be used frequently. We sought to measure the frequency of disease and accuracy of presumptive treatment for these infections.Methods
This was an observational cohort study performed at an urban academic Level 1 trauma center ED with an annual census of 95,000 visits per year. Testing was performed using the APTIMA Unisex swab assay (Gen-Probe Incorporated, San Diego, CA). Presumptive therapy was defined as receiving treatment for both infections during the initial encounter without confirmation of diagnosis.Results
A total of 1162 patients enrolled. Infection was present in 26% of men, 14% of all women and 11% of pregnant women. Despite high frequency of presumptive treatment, > 4% of infected patients in each category went untreated.Conclusion
Inaccuracy of presumptive treatment was common for these sexually transmitted infections. There is an opportunity to improve diagnostic accuracy for treatment. 相似文献11.
YeongHo Choi Yu Jin Lee Sang Do Shin Kyoung Jun Song KyungWon Lee Eui Jung Lee Yu Jin Kim Ki Ok Ahn Ki Jeong Hong Young Sun Ro 《The American journal of emergency medicine》2017,35(1):7-12
Background
Timely transfer and percutaneous coronary intervention (PCI) with or without thrombolysis are recommended by the American Heart Association (AHA) to care for ST-segment elevation myocardial infarction (STEMI) patients who present first to a non–PCI-capable hospital. This study was to evaluate the impact on in-hospital mortality of the compliance with guidelines regarding to the time of PCI for patients with STEMI who were transferred to a capable PCI hospital.Methods
We used the CArdioVAscular disease Surveillance data from November 2007 to December 2012 for this study. Adult patients who were diagnosed with STEMI and transferred from a primary hospital for PCI were included. Patients who underwent PCI or coronary artery bypass graft surgery in the primary hospital and patients with an unknown emergency department disposition were excluded. The main exposure was the AHA recommendation for reperfusion therapy. We tested the association between compliance with AHA and hospital mortality.Results
A total of 2078 patients were analyzed, 30.0% of whom were treated in compliance with the guidelines, whereas the remaining 70.0% were not. Thrombolysis was performed in 7.9% and 0.8% (P value < .01) and hospital mortality was 5.0% and 6.8% (P value = .11) in the compliant and violence groups, respectively. The adjusted odds ratios (95% confidence intervals) of the compliant group for hospital mortality were 0.75 (0.46-1.21), respectively. A sensitivity analysis of symptom onset to arrival time was a trend for a beneficial effect in the compliant group.Conclusions
Among the patients who were transferred for STEMI care, undergoing PCI as recommended by the AHA was not associated with a mortality benefit, but the patients whose symptom onset to hospital arrival time was within 30 minutes showed an association between compliance and lower mortality. 相似文献12.
Troy Madsen Cameron Smyres Talmage Wood Tamara Moores Matthew Fuller Virgil Davis Kurt Bernhisel 《The American journal of emergency medicine》2017,35(1):25-28
Background
In evaluating patients with chest pain, emergency department observation units (EDOUs) may use a staffing model in which emergency physicians determine patient testing (EP model) or a model similar to a chest pain unit (CPU) in which cardiologists determine provocative testing (CPU model).Methods
We performed a prospective study with 30-day telephone follow-up for all chest pain patients placed in our EDOU. Halfway through the study period, our EDOU transitioned from an EP model to a CPU model. We compared provocative testing rates and outcomes between the 2 models.Results
Over the 34-month study period, our EDOU evaluated 1190 patients for chest pain. Patients placed in the EDOU during the 17-month CPU model were more likely to be moderate risk (Thrombolysis in Myocardial Infarction score 3-5) than those during the 17-month EP model: 24.9% vs 18.8%, P = .011. Despite this difference, rates of provocative testing (stress testing or coronary computed tomography) were lower during the CPU model: 47.1% vs 56.5%, P = .001. This reduction was particularly evident among low-risk patients (Thrombolysis in Myocardial Infarction score 0-2): 49.8% vs 58.1%, P = .011. Rates of myocardial infarction, percutaneous coronary intervention, or coronary artery bypass graft were similar between the 2 groups (2.8% vs 3.2%, P = .140). We noted no significant events or missed diagnoses in either group during the 30-day follow-up.Conclusion
An EDOU model that used mandatory cardiology consultation resulted in decreased provocative testing, particularly among low-risk chest pain patients. Future research should explore the cost-effectiveness of this model. 相似文献13.
David M. Nestler Waqas I. Gilani Ryan T. Anderson M. Fernanda Bellolio Megan E. Branda Annie LeBlanc Sean Phelan Ronna L. Campbell Erik P. Hess 《The American journal of emergency medicine》2017,35(1):29-35
Objectives
Despite a high prevalence of coronary heart disease in both genders, studies show a gender disparity in evaluation whereby women are less likely than men to undergo timely or comprehensive cardiac investigation. Using videographic analysis, we sought to quantify gender differences in provider recommendations and patient evaluations.Methods
We analyzed video recordings from our Chest Pain Choice trial, a single center patient-level randomized trial in which emergency department patients with chest pain being considered for cardiac stress testing were randomized to shared decision-making or usual care. Patient-provider interactions were video recorded. We compared characteristics and outcomes by gender.Results
Of the 204 patients enrolled (101 decision aid; 103 usual care), 120 (58.8%) were female. Of the 75 providers evaluated, 20 (26.7%) were female. The mean (SD) pretest probability of acute coronary syndrome was lower in women [3.7% (2.2) vs 6.7% (4.4), P = .0002]. There was no gender effect on duration of discussion, clinician recommendations, OPTION scores, patient perceptions, or eventual patient dispositions. When the clinician and patient gender matched, OPTION scores were lower (interaction P = .002), and patients were less likely to find the information to be very helpful (interaction P = .10).Conclusions
Despite a lower pretest probability of acute coronary syndrome in women, we did not observe any significant gender disparity in how patients were managed and evaluated. When the patients' and providers' gender matched, the provider involved them less in the decision making process, and the information provided was less helpful than when the genders did not match. 相似文献14.
Orli Megged 《The American journal of emergency medicine》2017,35(1):36-38
Aim
Bacteremia is an uncommon complication of urinary tract infection (UTI). The aim of this study was to identify risk factors for bacteremic UTI in pediatric patients.Methods
The medical records of all pediatric patients with UTI between 2013 and 2014 were retrospectively reviewed. Pediatric patients with accompanying bacteremia were compared with pediatric patients with no bacteremia.Results
Five hundred twenty-seven cases of UTI were identified. Blood cultures were taken in 464, 26 (5.6%) of which also were bacteremic. Pediatric patients with bacteremia were more likely to be male (58% vs 28%, P < .01), to be younger than 3 months (54% vs 31%, P = .02), and to have higher creatinine (average 0.77 ± 0.97 vs 0.34 ± 0.24, P < .01). Pediatric patients with bacteremia had higher rate of underlying urologic conditions. The following variables were included in multivariate analysis: age < 3 months, sex, ethnicity, method of urine collection, creatinine, and underlying urologic conditions. Only creatinine (odds ratio, 3.67; 95% confidence interval, 1.69-8.11) was found as an independent risk factor for bacteremia.Conclusions
High creatinine at presentation is a risk factor that might aid in early identification of pediatric patients with high risk for bacteremia and its complications. 相似文献15.
Serdar Biricik Hüseyin Narcı Güllü Akbaydoğan Dündar Cüneyt Ayrık Mehmet Özgür Türkmenoğlu 《The American journal of emergency medicine》2019,37(3):411-414
Background
Mean platelet volume (MPV) is an inflammatory marker. Recent studies have shown that there is a negative correlation between platelet count (PC) and MPV and that the ratio of these two values may be more meaningful. The aim of our study was to investigate the diagnostic value of MPV and the MPV/PC ratio in acute appendicitis.Methods
Patients who were admitted to the emergency department and underwent appendectomy for acute appendicitis between January 2013 and May 2016 were evaluated retrospectively.The patients were divided into three groups based on their histopathological findings: the control group (negative appendicectomy) and the uncomplicated and complicated appendicitis groups. Leukocyte count, CRP (C-reactive protein) levels, PC, MPV and the MPV/PC ratio were compared among the groups.Results
A total of 424 patients, including 231 men, were included in the study. The average age of all patients was 34.9?±?13.2?years. There was no statistically significant difference between the uncomplicated appendicitis, complicated appendicitis and control groups in terms of MPV, PC and the MPV/PC ratio. Leukocyte count had a strong discriminatory property based on the area under curve (AUC) 0.73, (p?<?0.001). CRP levels, MPV, PC and the MPV/PC ratio had weak discriminatory power with AUC values <0.65. Using receiver operating characteristic (ROC) analysis, the sensitivity and specificity of MPV were 83.79% and 23.21%, respectively, and 66.48% and 48.21%, respectively, for the MPV/PC ratio.Conclusions
In our study, MPV and the MPV/PC ratio were not useful in the diagnosis of acute appendicitis. 相似文献16.
Laila Cochon Anais Ovalle José M. Nicolás Amado Alejandro Baez 《The American journal of emergency medicine》2017,35(4):564-568
Objective
To assess and compare the diagnostic value of lactate, procalcitonin (PCT) and C-reactive protein (CRP) in low, moderate, and high-risk stratified population applying Mortality in Emergency Department (MEDS) risk score using Bayesian statistical modeling.Methods
MEDS criteria was used to risk stratify into low, moderate and high risk. Each population was attributed a percentage risk, and used as pre-test probability in the Bayesian nomogram. Sensitivity and specificity lactate, PCT and CRP were attained from pooled meta-analysis data. Absolute and relative diagnostic gains were calculated.Results
Pooled diagnostic quality data obtained from a meta-analysis reflected sensitivity for PCT of 77% and specificity of 79%, for lactate sensitivity 49.1% and specificity 74.3% and CRP yielded a sensitivity of 75% and specificity 67%. likelihood ratios (LR) calculations for PCT were LR + 3.67 and LR ? 0.29; for lactate LR + 1.88 and LR ? 0.69; CRP LR + 2.27 and LR ? 0.37. When computed in Bayesian nomogram post-test probabilities for LR + were as follows: for PCT low risk absolute gain of 11.7% and relative gain of 220%; moderate absolute gain 25.7% relative gain 148.5%; for high risk absolute gain 25.1% and relative gain 42.6%. Lactate LR + results for low risk absolute gain of 4.7% and relative gain of 88.6%; moderate absolute gain 10.7% and relative gain 61.8%; high risk relative gain 14.1% and relative gain 23.9%. CRP results for low population and LR + absolute gain 5.7% and relative gain 107.5%; moderate risk 14.7% absolute gain and 84.9% relative gain; high risk 77% post-test 18.1% absolute gain and 30.7% relative gain.Conclusion
Bayesian statistical model demonstrated the superior diagnostic quality of PCT. For ruling out severe disease, lactate yielded a higher benefit with increased relative gain with negative LR. 相似文献17.
David S. Huckins Karen Copeland Wesley Self Cheryl Vance Phyllis Hendry Keith Borg Joseph Gogain 《The American journal of emergency medicine》2017,35(3):418-424
Objectives
Evaluate the diagnostic accuracy of the APPY1TM biomarker panel, previously described for use in pediatric patients, for identifying adult ED patients with abdominal pain who are at low risk of acute appendicitis.Methods
This study prospectively enrolled subjects > 18 years of age presenting to seven U.S. emergency departments with < 72 hours of abdominal pain suggesting possible acute appendicitis. The APPY1 panel was performed on blood samples drawn from each patient at the time of initial evaluation and results were correlated with the final diagnosis either positive or negative for acute appendicitis.Results
431 patients were enrolled with 422 completing all aspects of the study. The APPY1 biomarker panel exhibited a sensitivity of 97.5% (95% CI, 91.3–99.3%), a negative predictive value of 98.4% (95% CI, 94.4–99.6%), a negative likelihood ratio of 0.07 (95% CI, 0.02–0.27), with a specificity of 36.5% (95% CI, 31.6–41.8%) for acute appendicitis. The panel correctly identified 125 of 342 (36.6%) patients who did not have appendicitis with 2 (2.5%) false negatives. The CT utilization rate in this population was 72.7% (307/422). Of 307 CT scans, 232 were done for patients who did not have appendicitis and 79 (34%) of these patients were correctly identified as negative with "low risk" biomarker panel results, representing 26% (79/307) of all CT scans performed.Conclusion
This biomarker panel exhibited high sensitivity and negative predictive value for acute appendicitis in this prospective adult cohort, thereby potentially reducing the dependence on CT for the evaluation of possible acute appendicitis. 相似文献18.
Lauren T. Southerland Lauren Slattery Joseph A. Rosenthal Deborah Kegelmeyer Anne Kloos 《The American journal of emergency medicine》2017,35(2):329-332
Objectives
The American College of Emergency Physicians Geriatric Emergency Department (ED) Guidelines and the Center for Disease Control recommend that older adults be assessed for risk of falls. The standard ED assessment is a verbal query of fall risk factors, which may be inadequate. We hypothesized that the addition of a functional balance test endorsed by the Center for Disease Control Stop Elderly Accidents, Deaths, and Injuries Falls Prevention Guidelines, the 4-Stage Balance Test (4SBT), would improve the detection of patients at risk for falls.Methods
Prospective pilot study of a convenience sample of ambulatory adults 65 years and older in the ED. All participants received the standard nursing triage fall risk assessment. After patients were stabilized in their ED room, the 4SBT was administered.Results
The 58 participants had an average age of 74.1 years (range, 65-94), 40.0% were women, and 98% were community dwelling. Five (8.6%) presented to the ED for a fall-related chief complaint. The nursing triage screen identified 39.7% (n = 23) as at risk for falls, whereas the 4SBT identified 43% (n = 25). Combining triage questions with the 4SBT identified 60.3% (n = 35) as at high risk for falls, as compared with 39.7% (n = 23) with triage questions alone (P < .01). Ten (17%) of the patients at high risk by 4SBT and missed by triage questions were inpatients unaware that they were at risk for falls (new diagnoses).Conclusions
Incorporating a quick functional test of balance into the ED assessment for fall risk is feasible and significantly increases the detection of older adults at risk for falls. 相似文献19.
Background
Ideally, high-stakes examinations assess 1 dimension of medical knowledge to produce precise estimates of a candidate’s performance. It has not been reported whether the American Board of Physical Medicine and Rehabilitation Part 1 Certification Examination (ABPMR-CE-1) is unidimensional or not.Objective
To examine the ABPMR-CE-1 to measure how many dimensions it assesses.Design
Retrospective observational study.Setting
We assessed examination results from the 2015 ABPMR-CE-1.Participants
A total of 489 deidentified candidates taking the 2015 ABPMR-CE-1.Methods
A 1-parameter Item Response Theory (IRT) measurement model was utilized. A Principal Components Analysis (PCA) of standardized residual correlations was used to detect multidimensionality.Main Outcome Measure
Number of primary dimensions reflected in the 325 test questions.Results
The results of the dimensionality analysis indicated that the ABPMR-CE-1 examination is highly unidimensional from a psychometric perspective. Expert content review of the substantive content of small contrasting clusters of questions provided additional assurance of the unidimensional nature of the examination.Conclusions
The ABPMR-CE-1 appears indeed to measure a single construct, which suggests a sound structure of the examination. It closely approximates the assumption of statistical unidimensionality.Level of Evidence
Not applicable. 相似文献20.