Venoarterial Extracorporeal Membrane Oxygenation With or Without Advanced Intervention for Massive Pulmonary Embolism.

INTRODUCTION: Massive pulmonary embolism (MPE) is a rare but highly fatal condition. Our study's objective was to evaluate the association between advanced interventions and survival among patients with MPE treated with venoarterial extracorporeal membrane oxygenation (VA-ECMO). METHODS: This is a retrospective review of the Extracorporeal Life Support Organization (ELSO) registry data. We included adult patients with MPE who were treated with VA-ECMO during 2010-2020. Our Primary outcome was survival to hospital discharge; secondary outcomes were ECMO duration among survivors and rates of ECMO-related complications. Clinical variables were compared using the Pearson chi-square and Kruskal-Wallis H tests. RESULTS: We included 802 patients; 80 (10%) received SPE and 18 (2%) received CDT. Overall, 426 (53%) survived to discharge; survival was not significantly different among those treated with SPE or CDT on VA-ECMO (70%) versus VA-ECMO alone (52%) or SPE or CDT before VA-ECMO (52%). Multivariable regression found a trend towards increased survival among those treated with SPE or CDT while on ECMO (AOR 1.8, 95% CI 0.9-3.6), but no significant correlation. There was no association between advanced interventions and ECMO duration among survivors, or rates of ECMO-related complications. CONCLUSION: Our study found no difference in survival in patients with MPE who received advanced interventions prior to ECMO, and a slight non-significant benefit in those who received advanced interventions while on ECMO.

WHEN AND HOW TO USE ORTHOSTATIC VITAL SIGNS.

BACKGROUND: Much controversy surrounds the use of orthostatic vital signs (OVS), including their indications, performance, and interpretation. This can lead to conflict between nurses, physicians, and consultants. This article summarizes the evidence for OVS in selected emergency department (ED) indications and the basis for a rapid measurement protocol. OBJECTIVE: This narrative review is intended to clarify indications for OVS measurement, their performance, and interpretation. DISCUSSION: Phlebotomy studies indicate that OVS are more discriminating than supine vital signs in hypovolemia, but many findings, even some considered "positive," do not provide compelling evidence in favor of or against disease. Evaluated as a diagnostic test, they have a low yield and controversial criteria for a positive test, but as vital signs, they are useful for selected patients with frequent ED presentations-blood loss, dehydration, dizziness, weakness, and falls. Available evidence supports a rapid measurement protocol, including a 1-min interval after standing. CONCLUSION: OVS are useful in selected patients, in a variety of frequent presentations, but their indications and implications for a patient's care are subject to physician interpretation. Given their ease of measurement and effect on decision-making, physicians may consider measuring them early in the evaluation of selected patients.

Early Prediction of Intensive Care Admission in Emergency Department Patients With Asthma.

BACKGROUND: Emergency physicians must choose whether patients with asthma are admitted to a hospital ward or a higher level of care, such as an intermediate care unit (IMC) or intensive care unit (ICU). OBJECTIVE: This study aimed to determine which variables, available early during emergency department (ED) visits, are associated with IMC/ICU admission. METHODS: In this retrospective chart review (records from 2015-2018), two trained abstractors, blinded to study hypothesis, abstracted data on predictor variables and disposition (ward vs. IMC/ICU). Predictor variables were defined explicitly and abstracted from the periods of ED arrival and after treatment with 7.5 mg nebulized albuterol. Distress was defined as tripod positioning or speaking in broken sentences. "Arrival" and "after treatment" scoring systems were derived based on adjusted odds ratios (aOR) for predictor variables. We performed analyses using SASⓇ, version 9.4 (SAS Institute). RESULTS: Among 273 patients, 105 required admission to an IMC/ICU. At presentation, distress (aOR 2.1, 95% confidence interval [CI] 1.1-3.9), room air SpO2 ≥95% (aOR 0.29, 95% CI 0.14-0.62), respiratory rate > 20 breaths/min (aOR 1.9, 95% CI 1.0-3.3), and retractions (aOR 1.9, 95% CI 1.1-3.3) were associated with IMC/ICU admission. After initial bronchodilator therapy, heart rate > 120 beats/min (aOR 7.1, 95% CI 2.0-25), room air SpO2 ≥ 95% (aOR 0.15, 95% CI 0.07-0.34), and noninvasive ventilation (aOR 6.5, 95% CI 2.5-17) were associated with IMC/ICU admission. Both scoring systems stratified risk of IMC/ICU admission into low-risk (9-10%) and high-risk (70-100%) groups. CONCLUSIONS: Combinations of predictor variables, available early in a patient's stay, stratify risk of admission to an IMC/ICU bed.

Quantitative and Qualitative Analysis of Emergency Physician Performed Biparietal Diameter Estimate for Gestational Age.

BACKGROUND: An accurate estimation of fetal gestational age is essential for the management of pregnant patients who present to the emergency department (ED). Point-of-care-ultrasound (POCUS) is an integral part of emergency medicine training and includes measurement of fetal gestational age by the biparietal diameter (BPD) method. OBJECTIVES: In this study we performed a quantitative assessment of emergency physician (EP)-performed BPD estimate of gestational age to identify the percentage of studies performed in our department that had an estimated gestational age within 14 days of an adjusted radiological or obstetrical estimation. METHODS: We performed a chart review of our ED ultrasound database and electronic medical records for cases where a BPD measurement was performed by an EP. We recorded the ED gestational age estimate in days and the radiological or obstetrical estimate of gestational age in days. We then calculated the difference in days between the two examinations. We used a normal binomial approximation to calculate 95% confidence intervals. A secondary analysis looked at the quality of the images based on measurement placement and the view obtained. RESULTS: Seventy-four cases met eligibility criteria; of those, 67 (91%) had a gestational age estimation within 14 days of the adjusted radiological or obstetrical estimate (95% confidence interval 81-96%). CONCLUSION: This study shows that EP-performed BPD measurements for gestational age are quantitatively accurate, with 91% of estimates within 14 days of a standard radiological or obstetrical estimation.

Emergency Department Asthma "Spacing Trials": Institutional Variability and Time Cost.

BACKGROUND: Some admitting physicians request a medication-free interval ("spacing trial") in the emergency department (ED) to determine whether a patient with an acute exacerbation of asthma can be safely admitted to a hospital ward bed, where bronchodilators are only available every 4 h. OBJECTIVE: Our objectives were to estimate the frequency of ED spacing trials in different hospitals and their associated time cost. METHODS: This multicenter retrospective cohort study examined patients admitted for asthma from 2015 to 2018. We included all university records and a random sample of records from two community hospitals in the same urban area. Two team members abstracted data from each record using recommended methods, with group consensus to resolve differences. Proportion confidence intervals were calculated using normal binomial approximation. We calculated mean differences in ED stay associated with spacing trials, using multivariable linear regression to adjust for age, hospital type, history of intubation, initial pulse, initial respiratory rate, initial signs of distress. RESULTS: We collected data from 274 patients in the university hospital, and 71 and 70 cases from the community hospitals. An explicit spacing trial was noted in 52 of 274 (19%) university hospital records vs. 3 of 141 (2%) community hospital records, with a difference of 17% (95% confidence interval [CI] 11-23%). Delayed patient decompensation occurred in 3%, with no difference between hospitals. Spacing trials were associated with an adjusted mean of 159 min (95% CI 102-217 min) increase in ED stay. CONCLUSIONS: The practice of spacing varies widely between hospitals and is associated with substantial delay without an apparent benefit.

Transesophageal Echocardiography Training of Emergency Physicians Through an E-Learning System.

BACKGROUND: Transesophageal echocardiography (TEE) has been shown to be a powerful tool that emergency physicians can use to guide resuscitation efforts during cardiac arrest. Currently, there is no standardized curriculum to teach TEE to emergency physicians. OBJECTIVE: We hypothesized that the use of a pilot training course combining interactive e-learning and hands-on simulation would increase the percentage of students achieving a score of ≥80% on a multiple-choice test of knowledge and increase self-reported comfort using TEE. METHODS: We designed a 2.5-h TEE course for emergency physicians and medical intensive care unit fellows. Participants took a test of knowledge and a survey of comfort-both online-before, just after, and 4 weeks after taking the course. Survey responses measured participants self-reported comfort with using TEE in clinical practice. A normal binomial approximation was used to calculate the 95% confidence interval. RESULTS: Of the 3 tests of knowledge, 15 participants completed all tests. Of the surveys of comfort, 31 participants completed the precourse survey, 32 completed the postcourse survey, and 19 completed the 4-week follow-up survey. The proportion of students scoring ≥80% improved from 40% on the precourse test to 80% on the postcourse test (95% confidence interval 1-79). The proportion of students indicating comfort with using TEE improved from 3% precourse to 53% postcourse (95% confidence interval 28-71). CONCLUSIONS: A TEE training course resulted in a 50% increase in surveyed participants feeling comfortable using TEE in cardiac arrest and a 40% increase in participants scoring ≥80% on a test of knowledge.

Evaluation of Spodick's Sign and Other Electrocardiographic Findings as Indicators of STEMI and Pericarditis.

BACKGROUND: Patients with ST elevation on electrocardiogram (ECG) could have ST elevation myocardial infarction (STEMI) or pericarditis. Spodick's sign, a downsloping of the ECG baseline (the T-P segment), has been described, but not validated, as a sign of pericarditis. OBJECTIVE: This study estimates the frequency of Spodick's sign and other findings in patients diagnosed with STEMI and those with pericarditis. METHODS: In this retrospective review, we selected charts that met prospective definitions of STEMI (cases) and pericarditis (controls). We excluded patients whose ECGs lacked ST elevation. An authority on electrocardiography reviewed all ECGs, noting the presence or absence of Spodick's sign, ST depression (in leads besides V1 and aVR), PR depression, greater ST elevation in lead III than in lead II (III > II), abrupt take-off of ST segment (the RT checkmark sign), and upward or horizontal ST convexity. We quantified strength of association using odds ratio (OR) with 95% confidence interval (CI). RESULTS: One hundred and sixty-five patients met criteria for STEMI and 42 met those for pericarditis. Spodick's sign occurred in 5% of patients with STEMI (95% CI 3-10%) and 29% of patients with pericarditis (95% CI 16-45%). All other findings statistically distinguished STEMI from pericarditis, but ST depression (OR 31), III > II (OR 21), and absence of PR depression (OR 12) had the greatest OR values. CONCLUSIONS: Spodick's sign is statistically associated with pericarditis, but it is seen in 5% of patients with STEMI. Among other findings, ST depression, III > II, and absence of PR depression were the most discriminating.

Predicting Failure of Intravenous Access in Adults: The Value of Prior Difficulty.

BACKGROUND: When intravenous access cannot be established using traditional methods of inspection/palpation, advanced methods are often required, leading to substantial delays in care. Knowing the likelihood of intravenous access failure can improve emergency department (ED) efficiency. OBJECTIVE: Our aim was to validate prior need for an advanced technique to establish intravenous access as a predictor of failure to achieve access via traditional methods and to estimate the risk difference associated with this finding. METHODS: We re-analyzed data collected for a clinical trial that randomized ED patients requiring intravenous access to one of two types of intravenous catheter; gauge size was selected by the inserter. The re-analysis pools data from both groups to examine predictors of failure to establish intravenous access by traditional methods, with failure defined as abandonment or use of an advanced technique (ultrasound guidance or external jugular vein catheterization). Confidence intervals for the difference between proportions were calculated using a normal binomial approximation. RESULTS: We obtained data from 600 patients, with a median age of 52 years (interquartile range 36-63 years). We noted failure of traditional methods in 28 (4.7%) patients, including 17 of 109 (16%) with prior need for advanced techniques. The risk difference for prior need for advanced techniques versus no prior difficulty was 14% (95% confidence interval 7-22). CONCLUSIONS: Patients with a prior need for advanced techniques were 14% more likely to have failure of intravenous access by traditional methods than those without prior difficulty.

Effectiveness of a Rural Emergency Department (ED)-Based Pain Contract on ED Visits Among ED Frequent Users.

BACKGROUND: Caring for patients with chronic pain in emergency departments (EDs) can be particularly challenging, for both patients and physicians. OBJECTIVE: This study sought to determine, in a rural setting, the effect of an ED-based pain contract on the rate of ED visits among patients with frequent visits for pain not related to cancer. METHODS: This is a multi-ED, retrospective, before-and-after chart review assessing the effect of a rural ED-based pain contract on the frequency of ED visits. The study setting consisted of four rural EDs representing over 85,000 annual visits. Medical records of patients eligible for a standardized pain contract during a 10-year period (December 2005-December 2015) were reviewed. Only visits involving complaints of pain were included. The number of visits during the year prior to contract initiation was compared with the number of visits during the year after enrollment, using a paired t-test. RESULTS: We enrolled 314 patients, 185 (59%) of whom were female. The study group's median age was 48 years. The mean number of ED visits was 12.4 visits (95% confidence interval [CI] 11.5-13.3) 1 year prior to the pain contract and 6.5 (95% CI 5.6-7.3) 1 year afterward (p < 0.0001). The mean number of ED visits decreased by 6.0 (95% CI 5.0-7.2). CONCLUSION: A pain contract protocol was associated with a significant reduction in the number of ED visits to multiple rural EDs.

No Radiographic Safe Margin Found in the "Easy IJ" Internal Jugular Vein Procedure.

BACKGROUND: The Easy IJ procedure involves placement of a 4.8-cm intravenous catheter into the internal jugular (IJ) vein using ultrasound guidance. It is not known whether this needle length has the potential to cause a pneumothorax. OBJECTIVE: The objective of this study was to determine if a radiographic "safe margin" exists. We hypothesized that an average margin of ≥2 cm would exist between the catheter tip and the pleura. METHODS: Operators used a central approach to the IJ vein. We reviewed radiographic images taken immediately after the Easy IJ procedure. Using digital software, we measured the distance from the catheter tip to the closest point of the pleura and from the catheter tip to the level of the lung apex. We defined distances exceeding the margin of safety-either passing the pleura or ending inferior to the apex-as negative for the purpose of calculating an average. We used the t distribution to calculate 95% confidence intervals (CIs) for average values. RESULTS: Radiographs showing the catheter tip were available from 62 patients. The mean needle-to-pleura distance was -0.1 cm (95% CI -0.7 to 0.5 cm). The mean vertical distance to the apex was -0.2 cm (95% CI -0.8 to 0.3 cm), with a standard deviation of 2.25 cm. CONCLUSION: Radiographic analysis failed to show a margin of safety for the Easy IJ procedure. Postprocedure imaging may still be necessary to exclude pneumothorax.

Standing shock index: An alternative to orthostatic vital signs.

Objective The lack of a sensitive, practical bedside test for hypovolemia has rekindled interest in the shock index (heart rate divided by systolic blood pressure). Here, we compare the effect of blood donation on standing shock index values with its effect on values for the supine shock index and orthostatic change in shock indicies (OCSI). METHODS: This is a re-analysis of data collected for an earlier report. Data were available from 292 adults below age 65 and 44 adults ages 65 and over, donating 450mL of blood. We obtained supine and standing vital signs before and after donation and then calculated 95% confidence intervals for differences based on the t-distribution. RESULTS: Blood donation resulted in a mean increase in the standing shock index of 0.09 [95% CI, 0.08-0.11] in younger adults and 0.08 [95% CI, 0.05-0.11] in older adults. These changes were similar to those noted for OCSI (young, 95% CI, 0.08-0.10; old, 95% CI, 0.04-0.10). Supine shock index values did not change with donation in younger donors (mean difference 0.0 [95% CI, 0.0-0.01]) or older donors (mean difference 0.0 [95% CI, -0.01-0.03]). CONCLUSION: Blood donation does not affect the supine shock index, but it does result in changes in standing shock index that are similar to changes in more complicated orthostatic vital signs.

Predictors and Delays Associated with the Need for Advanced Techniques for Intravenous Access.

BACKGROUND: The need for advanced techniques for intravenous access (ATIVA) can lead to delays in care and contribute to emergency department (ED) crowding. OBJECTIVE: In this article, we estimate the delay and predictors associated with the need for ATIVA. METHODS: In this case-control study, we collected data from ED cases requiring ATIVA and control patients in whom i.v. access was gained by traditional inspection and palpation. We included two control groups-a random retrospective sample and a prospective limited convenience sample. We collected time and acuity data from all groups and data on predictor variables from cases and prospective controls. We analyzed time data using quartile regression and predictor variable data using contingency table analysis and logistic regression. RESULTS: We collected data from 116 cases (91 of which had time interval data), 98 retrospective controls, and 144 prospective controls. The median time from triage to i.v. line establishment was 199 min for cases vs. 64 min for prospective controls and 81 min for retrospective controls. The need for ATIVA was associated with a 1.1-greater quartile time interval (95% confidence interval [CI] 0.8-1.3). Two variables-i.v. drug use (IVDU; odds ratio 3.7; 95% CI 1.8-7.3) and prior need for ATIVA (odds ratio 5.2; 95% CI 2.7-9.8)-were associated with a need for ATIVA; obesity, renal failure, and diabetes were not. CONCLUSIONS: The need for ATIVA increases median time to i.v. line placement by 118 to 135 min compared with traditional inspection and palpation. IVDU and prior need for an advanced technique are associated with a need for ATIVA.

Power Injection Through Ultrasound-Guided Intravenous Lines: Safety and Efficacy Under an Institutional Protocol.

BACKGROUND: After an index case of contrast-associated compartment syndrome, an urban hospital instituted a protocol limiting high-speed injection to intravenous (IV) lines started proximal to the forearm and testing those lines before contrast injection. OBJECTIVE: In this article, we estimate the safety and efficacy of high-speed injection using this protocol in patients with IV lines inserted under ultrasound guidance. METHODS: In an ambispective study, we enrolled prospective cohorts of ED patients requiring high-speed radiographic contrast media injection (≥3.5 mL/sec) into two groups: those with IV lines placed under ultrasound guidance and those with IV lines placed using traditional inspection and palpation. We also performed a retrospective review involving those groups. In addition, we reviewed hospital records for all patients with compartment syndrome between January 2010 and December 2011. We calculated 95% confidence intervals using normal approximation or exact calculation. RESULTS: Between November 2013 and August 2014, the ED referred 32 patients to the Department of Radiology for computed tomography angiography involving high-speed contrast injection through ultrasound-guided IV lines. Of these, 25 of 32 (78%) had successful injection (7 failed in the Department of Radiology) vs. 26 of 27 (96%) with catheters inserted using traditional methods (risk difference 0.18 [95% confidence interval -0.01 to 0.38]). Based on retrospective records, we estimated 79 additional cases. We found no cases of compartment syndrome during either period, for an incidence estimate of 0 per 100 cases (95% confidence interval 0-3). CONCLUSION: A hospital policy for high-speed contrast injection through ultrasound-guided IV lines has a safe record. However, 22% of patients with ultrasound-guided IV lines were refused for CT.

Advanced intravenous access: technique choices, pain scores, and failure rates in a local registry.

BACKGROUND: When an intravenous (IV) catheter is needed and the common approach of inspection and palpation fails, an advanced access technique becomes necessary. Our objectives were to estimate pain scores, operator times, success rates, and complication rates when advanced techniques are used in a clinical setting. METHODS: We enrolled patients who had a need for advanced IV access and were able to give informed consent to participate in our study. We collected data on operator type, technique, initial success, number of attempts, skin punctures, operator time, pain scores, and complications. We estimated confidence intervals for proportions using normal binomial approximation or exact calculation. RESULTS: The registry documented 154 attempts in 116 patients. The median time from triage to establishment of an IV line was 203 minutes; multiple advanced attempts were required in 24% of cases. Most attempts (95%) used either ultrasound-guided cannulation of a peripheral vein (PUG) (108) or cannulated the external jugular vein (EJ) (38). These 2 methods yielded similar pain scores (4.3-4.5), but PUG required more skin punctures (1.6 vs 1.2) and longer operator time (17.7 vs 11.9 minutes). The only complication was IV line failure, occurring in 6% (95% confidence interval, 0%-18%) of EJ approaches and 27% (95% confidence interval, 18%-38%) of the PUG scenarios. CONCLUSION: Most attempts to establish IV access used PUG or the EJ. External jugular vein cannulation was achieved more quickly, with fewer skin punctures and a lower rate of postinsertion failure, than PUG.

Emergent diagnostic testing for pediatric nonfebrile seizures.

BACKGROUND: Guidelines from the American Academy of Neurology recommend laboratory studies or computed tomography (CT) for children who experience a nonfebrile seizure if anything in their history suggests a clinically significant abnormality. OBJECTIVE: To ascertain if any patient or seizure characteristics are associated with a greater likelihood that laboratory studies or CT scan will yield clinically significant results. METHODS: This retrospective case series reviewed 93 children with nonfebrile seizure, who were evaluated in an urban pediatric emergency department (ED) between July 2007 and June 2011. RESULTS: Laboratory studies were performed in 87% of the study group; 7% of those tests gave clinically significant results. Computed tomographic scans were obtained in 35% of our patients; 9% showed clinically significant findings. Presence of an active seizure in the ED or a first nonfebrile seizure had an 8% and 11% difference, respectively, for clinically significant laboratory abnormality. Children younger than 2 years showed a 7% difference of clinically significant laboratory abnormality. CONCLUSION: This study did not identify statistically significant predictors of laboratory or CT abnormalities for children with nonfebrile seizure presenting to the ED. Age less than 2years, having an active seizure in the ED, and experiencing a first-time seizure showed a trend toward an increased yield of laboratory testing. In accordance with the American Academy of Neurology guidelines, we conclude that the history of a child's present illness preceding the nonfebrile seizure, not characteristics of the seizure, should be used to determine the need for further testing.

Overtreatment of gonorrhea and chlamydial infections in 2 inner-city emergency departments.

BACKGROUND: Infections with Neisseria gonorrhoeae (GC) and Chlamydia trachomatis (CT) are the most commonly reported sexually transmitted diseases in the United States. OBJECTIVES: The primary objective of this study was to estimate the incidence of overtreatment of GC and CT infections in the emergency department (ED). The secondary objective was to determine if there are clinical variables that predict infection with GC and CT. METHODS: A retrospective medical record review was performed at 2 inner-city hospitals. Records were obtained from the evaluation of female patients who presented to the ED between January 1, 2012, and December 31, 2012, who were tested for GC and CT infection. A standardized form was used to extract specific information from each medical record. RESULTS: Data were extracted from 538 medical records. Of the 522 ED visits, 32 (6%) yielded test results positive for either GC or CT, including 3 that were positive for both. Treatment was administered to 101 patients (19%) and declined by an additional 9 (2%). Of those receiving antibiotics, 87 of 101 (0.86; 95% confidence interval, 0.77-0.92) had negative test results. Of those not offered antibiotics, 17 of 412 (0.04; 95% confidence interval, 0.02-0.07) had positive test results. The overtreatment proportion was similar at hospitals (55/66 [0.83] and 32/35 [0.91], respectively). Of clinical variables that were considered, only age less than 19 years was statistically associated with a positive test result for GC and CT. CONCLUSION: The rate of overtreatment for GC and CT was 86%. The practice of empirical treatment should be reconsidered.

Resistance Patterns of Escherichia coli in Women with Uncomplicated Urinary Tract Infection Do Not Correlate with Emergency Department Antibiogram.

BACKGROUND: Urine cultures are not always performed for female Emergency Department (ED) patients with uncomplicated urinary tract infection (UTI). Accordingly, hospital, and even ED-specific, antibiograms might be skewed toward elderly patients with many comorbidities and relatively high rates of antimicrobial resistance, and thus do not accurately reflect otherwise healthy women. Our ED antibiogram indicates Escherichia coli resistance rates for ciprofloxacin, levofloxacin, and trimethoprim-sulfamethoxazole (TMP-SMX) of 42%, 26%, and 33%, respectively. OBJECTIVES: This study aims to compare resistance rates of urinary E. coli from otherwise healthy women with uncomplicated UTI and pyelonephritis in the ED to rates in our ED antibiogram. METHODS: Females > 18 years old with acute onset of urinary frequency, urgency, or dysuria with pyuria identified on urinalysis (white blood cell count > 10/high-power field) were prospectively enrolled in the ED of an urban, academic medical center. Exclusion criteria indicating a complicated UTI were consistent with Infectious Diseases Society of America guidelines. Susceptibility patterns of E. coli to ciprofloxacin, levofloxacin, and TMP-SMX in the study group were compared to our ED antibiogram. RESULTS: Forty-five patients grew E. coli. Pyelonephritis was suspected in nine (20%) subjects. Compared with the ED antibiogram, significantly lower rates of resistance to ciprofloxacin (2% vs. 42%, p < 0.001), levofloxacin (2% vs. 26%, p < 0.001), and TMP-SMX (16% vs. 33%, p = 0.016) were observed. Six patients grew non-E. coli uropathogens. All were susceptible to both levofloxacin and TMP-SMX. CONCLUSIONS: ED antibiograms may overestimate resistance rates for uropathogens causing uncomplicated UTIs. In cases where nitrofurantoin cannot be used, fluoroquinolones and possibly TMP-SMX may remain viable options for treatment of uncomplicated UTI and pyelonephritis in women.

A comparison of longitudinal and transverse approaches to ultrasound-guided axillary vein cannulation.

OBJECTIVE: The axillary vein is an easily accessible vessel that can be used for ultrasound-guided central vascular access and offers an alternative to the internal jugular and subclavian veins. The objective of this study was to identify which transducer orientation, longitudinal or transverse, is better for imaging the axillary vein with ultrasound. METHODS: Emergency medicine physicians at an inner-city academic medical center were asked to cannulate the axillary vein in a torso phantom model. They were randomized to start with either the longitudinal or transverse approach and completed both sequentially. Participants answered questionnaires before and after the cannulation attempts. Measurements were taken regarding time to completion, success, skin punctures, needle redirections, and complications. RESULTS: Fifty-seven operators with a median experience of 85 ultrasound procedures (interquartile range, 26-120) participated. The frequency of first-attempt success was 39 (0.69) of 57 for the longitudinal method and 21 (0.37) of 57 for the transverse method (difference, 0.32; 95% confidence interval [CI], 0.12-0.51 [P = .001]); this difference was similar regardless of operator experience. The longitudinal method was associated with fewer redirections (difference, 1.8; 95% CI, 0.8-2.7 [P = .0002]) and skin punctures (difference, 0.3; 95% CI, -2 to +0.7 [P = .07]). Arterial puncture occurred in 2 of 57 longitudinal and 7 of 57 transverse attempts; no pleural punctures occurred. For successful attempts, the time spent was 24 seconds less for the longitudinal method (95% CI, 3-45 [P = .02]). CONCLUSIONS: The longitudinal method of visualizing the axillary vein during ultrasound-guided venous access is associated with greater first-attempt success, fewer needle redirections, and a trend of fewer arterial punctures compared with the transverse orientation.

No effect of Valsalva maneuver or Trendelenburg angle on axillary vein size.

BACKGROUND: A new technique for establishing ultrasound-guided central access involves the use of the axillary vein, the distal projection of the subclavian vein, via the lateral chest. OBJECTIVE: To examine the effects of Valsalva maneuver and Trendelenburg positioning on axillary vein cross-sectional area (CSA). METHODS: Using a group-sequential design, we enrolled stable emergency patients and measured their axillary veins sonographically. Patients were measured while supine, then after a Valsalva maneuver, and then at 5°, 10°, 15°, and 17° of Trendelenburg positioning, pausing 2 min after each change. We asked patients to score their discomfort from 0 to 10 in each position. RESULTS: We enrolled 30 adult patients with a median age of 39 years (range, 20-66 years). Treating physicians considered 11 of these patients to have hypovolemia. The Valsalva maneuver decreased CSA (Mean difference = -0.03 cm(2)), (95% confidence interval [CI] -0.10-0.04). Trendelenburg positioning did not statistically increase CSA. The 5° position caused the largest increase, that is, 0.04 cm(2) (95% CI -0.04-0.12) in the entire group and 0.1 cm(2) (95% CI -0.07-0.28) in the hypovolemic subgroup. At greater degrees of Trendelenburg positioning, patients reported higher discomfort scores or simply dropped out. CONCLUSION: The Valsalva maneuver and Trendelenburg angles above 10° do not increase axillary vein area but do increase patient discomfort. Our data suggest optimal positioning in the supine resting position or at a 5° Trendelenburg position.

Support for a waiting room time tracker: a survey of patients waiting in an urban ED.

BACKGROUND: Emergency Department (ED) crowding and inpatient boarding lead to lengthy wait times for patients, which may cause them to choose to leave without being seen. A new initiative to improve communication with patients is to provide an estimated wait time with a "time tracker" display, but it is unclear whether ED patients would welcome this. OBJECTIVE: To estimate the proportion of ED patients who would favor a time tracker display. METHODS: This survey-based study was conducted from March to July 2010 at an urban academic center. After being triaged, patients were asked to answer a multiple-choice questionnaire, asking their preference toward a time tracker display. RESULTS: Of the 375 patients who were approached, 340 (91%) participated. Two hundred fourteen of them (63%) preferred an ED with a time tracker, 53 (16%) were unsure, and 73 (21%) did not prefer an ED with a time tracker. Patients with low-acuity conditions (Emergency Severity Index [ESI] 4 or 5) were 1.2 times more likely (95% confidence interval 1.0-1.4) to favor a time tracker than those with higher acuity (ESI 3). Preference was not related to race, age, insurance status, or employment. CONCLUSIONS: The majority of patients in our study preferred an ED with a time tracker display (63% for vs. 21% against). Support for a time tracker was higher among patients triaged with lower ESI levels (4 or 5). A time tracker is viewed positively by many patients and may be a beneficial addition in the ED waiting room.