Implementation of an Ultrasound-Guided Regional Anesthesia Program in the Emergency Department of a Community Teaching Hospital

STUDY OBJECTIVE

We sought to initiate an emergency department (ED)-based ultrasound-guided regional anesthesia (UGRA) program in our community teaching hospital system. Here, we present our development process and protocol. We also sought to assess the types, indications, and associated adverse event rates for the UGRA procedures in this study.

METHODS

We conducted a retrospective analysis of prospectively collected quality assurance data from a case series of patients who underwent an UGRA procedure in the ED. In August 2020, we developed an UGRA program for our community teaching hospital and its 2 affiliated freestanding EDs. For quality assurance purposes, we tracked all UGRA procedures performed in the ED, and we specifically assessed adverse events using structured follow-up. We subsequently obtained approval from our institutional review board to perform chart reviews of the patients in our dataset to abstract additional data and formally perform a research study. We determined the frequency with which different UGRA procedures were performed, and we calculated the adverse event rate.

RESULTS

Between August 24, 2020, and July 15, 2022, a total of 18 different sonographers performed and documented 229 UGRA procedures on 206 unique patients. This included 28 different types of procedures. Follow-up after disposition was successful in 82.0% of patients. In 2 cases, the patient reported no pain relief at all from the procedure, but no patients reported complications related to the procedure.

CONCLUSION

We successfully initiated a robust ED-based UGRA program in our community teaching hospital system. Among patients with successful follow-up, no adverse events were identified.

Cash critical care time prices vary substantially by region and hospital ownership: A cross-sectional study

OBJECTIVES

Emergency department (ED) patients may be billed for critical care time (current procedural terminology codes 99291 and 99292) if they receive at least 30 min of critical care services. We sought to determine the median cash (self-pay) prices for critical care time performed in the ED in the United States and assess for associations between hospital characteristics and prices.

METHODS

We performed a cross-sectional analysis of hospital cash prices for critical care time performed in the ED using the first 25 alphabetical states. For each hospital, we recorded hospital characteristics including state, control (nonprofit, governmental, or for-profit), size, teaching status, and system. We then searched for each hospital's cash prices for 99291 and 99292 using Turquoise and hospital websites. We determined the median price for 99291 nationally, regionally, and for large hospital systems. We performed multivariable quantile regression to assess for associations between hospital characteristics and prices for 99291.

RESULTS

Of the 2629 eligible hospitals, 2245 (85.4%) and 1893 (72.0%) reported cash prices for 99291 and 99292, respectively. For 99291, the cash price ranged from $45 to $84,775 with a median of $1816 (IQR: $1039-3237). For 99292, the median price was $567 (IQR: $298-1008). On multivariable analysis, hospitals had higher cash prices for 99291 if they were located in the West, for-profit, or part of a large system. In particular, hospitals owned by Tenet Healthcare charged the most for 99291 (median $28,244).

CONCLUSION

The cash prices for critical care time vary substantially based on hospital characteristics. In particular, for-profit hospitals and those in the West tend to charge the most. Given that patients who require critical care are unlikely to be able to choose the hospital to which they present, standardization of critical care time fees should be considered.

The Implementation of a Prehospital Whole Blood Transfusion Program and Early Results

INTRODUCTION

In far-forward combat situations, the military challenged dogma by using whole blood transfusions (WBTs) rather than component-based therapy. More recently, some trauma centers have initiated WBT programs with reported success. There are a few Emergency Medical Service (EMS) systems that are using WBTs, but the vast majority are not. Given the increasing data supporting the use of WBTs in the prehospital setting, more EMS systems are likely to consider or begin WBT programs in the future.

OBJECTIVE

A prehospital WBT program was recently implemented in Palm Beach County, Florida (USA). This report will discuss how the program was implemented, the obstacles faced, and the initial results.

METHODS

This report describes the process by which a prehospital WBT program was implemented by Palm Beach County Fire Rescue and the outcomes of the initial case series of patients who received WBTs in this system. Efforts to initiate the prehospital WBT program for this system began in 2018. The program had several obstacles to overcome, with one of the major obstacles being the legal team's perception of potential liability that might occur with a new prehospital blood transfusion program. This obstacle was overcome through education of local elected officials regarding the latest scientific evidence in favor of prehospital WBTs with potential life-saving benefits to the community. After moving past this hurdle, the program went live on July 6, 2022. The initial indications for transfusion of cold-stored, low titer, leukoreduced O+ whole blood in the prehospital setting included traumatic injuries with systolic blood pressure (SBP) < 70mmHg or SBP < 90mmHg plus heart rate (HR) > 110 beats per minute.

FINDINGS

From the date of onset through December 31, 2022, Palm Beach County Fire Rescue transported a total of 881 trauma activation patients, with 20 (2.3%) receiving WBT. Overall, nine (45%) of the patients who had received WBTs so far remain alive. No adverse events related to transfusion were identified following WBT administration. A total of 18 units of whole blood reached expiration of the unit's shelf life prior to transfusion.

CONCLUSION

Despite a number of logistical and legal obstacles, Palm Beach County Fire Rescue successfully implemented a prehospital WBT program. Other EMS systems that are considering a prehospital WBT program should review the included protocol and the barriers to implementation that were faced.

Low CERVICAL-2 plane block, a proposed regional anesthetic technique for acute cholecystitis

INTRODUCTION

Acute cholecystitis is a painful inflammatory disease of the gallbladder. The Low Cervical-2 Plane Block is a retrolaminar block that targets the C3, C4, and C5 spinal nerves, which provide sensory innervation to the gallbladder, in order to potentially provide analgesia to patients with pain associated with acute cholecystitis.

METHODS

In this brief report, a softly embalmed cadaver was injected with a dye mixture bilaterally.

RESULTS

Subsequent cadaveric dissection revealed spread of the injectate deep to the prevertebral fascia to the C4 lamina on the right side and the C5 lamina on the left side. Also, diffusion of the anesthetic over the ligamenta flava could spread inferiorly and laterally to the spinal nerve roots of C3-C5 and thus potentially target the direct sensory innervation of the gallbladder.

CONCLUSION

The Low Cervical-2 Plane Block is a potentially effective modality for treating intractable pain from acute cholecystitis. However, further cadaveric injections are needed to confirm the exact extent of spread of anesthetic. Clinical application of the Low Cervical-2 Plane Block in patients with acute cholecystitis is needed to establish the efficacy of this theoretical technique.

Ultrasound-Guided Trigger Point Injections for the Treatment of Neck and Back Pain in the Emergency Department: A Randomized Trial

OBJECTIVES

Patients frequently present to the emergency department (ED) with neck or back pain, which can be difficult to treat. We sought to compare ultrasound-guided trigger point injection (TPI) to standard medications for patients with neck or back pain.

METHODS

We performed a single-center, open label, randomized controlled trial on ED patients with neck or back pain from myofascial pain syndrome comparing ultrasound-guided TPIs to those who received the combination of a nonsteroidal anti-inflammatory drug (NSAID) and a muscle relaxant (MR). The primary outcome of this study was the reduction in mean pain score at the time of ED disposition.

RESULTS

In total, we analyzed 196 patients. At the time of ED disposition, patients in the TPI group had a mean reduction in their pain scores of 45.0 mm as compared to 49.9 mm in the NSAID plus MR group (difference: 4.9 [95% confidence interval (CI) -3.0 to 12.7], P = .22). At the first reassessment, patients in the TPI group had greater pain reduction by 10.7 mm (95% CI 3.1 to 18.4). The rate of rescue therapy use was higher in the NSAID plus MR group (difference: 17.5% [95% CI 4.4 to 36.2]).

CONCLUSIONS

We found no difference in pain reduction at the time of ED disposition between patients randomized to the ultrasound-guided TPI group as compared to those who received an NSAID plus a MR. However, patients in the TPI group had greater pain reduction at the time of first reassessment and lower rates of rescue therapy use.

A cross-sectional analysis of Yelp and Google reviews of hospitals in the United States

Objective

Patient satisfaction is now an important metric in emergency medicine, but the means by which satisfaction is assessed is evolving. We sought to examine hospital ratings on Google and Yelp as compared to those on Medicare's Care Compare (CC) and to determine if certain hospital characteristics are associated with crowdsourced ratings.

Methods

We performed a cross-sectional analysis of hospital ratings on Google and Yelp as compared to those on CC using data collected between July 8 and August 2, 2021. For each hospital, we recorded the CC ratings, Yelp ratings, Google ratings, and each hospital's characteristics. Using multivariable linear regression, we assessed for associations between hospital characteristics and crowdsourced ratings. We calculated Spearman's correlation coefficients for CC ratings versus crowdsourced ratings.

Results

Among 3000 analyzed hospitals, the median hospital ratings on Yelp and Google were 2.5 stars (interquartile ratio [IQR], 2-3) and 3 stars (IQR, 2.7-3.5), respectively. The median number of Yelp and Google reviews per hospital was 13 and 150, respectively. The correlation coefficients for Yelp and Google ratings with CC's overall star ratings were 0.19 and 0.20, respectively. For Yelp and Google ratings with CC's patient survey ratings, correlation coefficients were 0.26 and 0.22, respectively. On multivariable analysis, critical access hospitals had 0.22 (95% confidence interval [CI], 0.14-0.30) more Google stars and hospitals in the West had 0.12 (95% CI, 0.05-0.18) more Google stars than references standard hospitals.

Conclusion

Patients use Google more frequently than Yelp to review hospitals. Median UnS hospital ratings on Yelp and Google are 2.5 and 3 stars, respectively. Crowdsourced reviews weakly correlate with CC ratings. Critical access hospitals and hospitals in the West have higher crowdsourced ratings.

Assessment of Trauma Team Activation Fees by US Region and Hospital Ownership

IMPORTANCE

Trauma centers must be readily equipped to handle a variety of life-threatening injuries and consequently may charge a fee for the activation of their trauma team. Regional and hospital-related variations in trauma activation fees across the US have not been formally assessed.

OBJECTIVE

To evaluate the variability of trauma activation fees from trauma centers across the US and examine whether certain hospital characteristics are associated with higher activation fees.

DESIGN, SETTING, AND PARTICIPANTS

This cross-sectional study used data from the American College of Surgeons website to identify all trauma centers in the US that were listed as verified from inception of the verification database through March 4, 2022 (N = 546). Five military hospitals were excluded, and trauma activation fees could not be found for 18 trauma centers; the remaining 523 hospitals were included in the analysis. Each hospital's publicly available chargemaster (a comprehensive list of a hospital's products, procedures, and services) was searched to obtain its trauma activation fees. Two levels of trauma activation fees were recorded: tier 1 (full activation) and tier 2 (partial activation). Hospital-specific data were obtained from the American Hospital Association website. All data were collected between January 2 and March 11, 2022. Linear regression analyses were performed to assess potential associations between hospital characteristics (type of control [for profit, government, church, or other nonprofit], hospital system [owner], number of staffed beds, and academic vs nonacademic status) and trauma activation fees.

MAIN OUTCOMES AND MEASURES

Median and mean trauma activation fees nationally and stratified by location, hospital system, and other hospital characteristics.

RESULTS

Of 523 trauma centers included in the analysis, most were located in the Midwest (180 centers) and West (129 centers). There were 176 adult level I trauma centers and 200 adult level II trauma centers; 69 centers had for-profit status, and 415 were academic. Overall, the median (IQR) tier 1 trauma activation fee was $9500 ($5601-$17 805), and the mean (SD) tier 1 trauma activation fee was $13 349 ($11 034); these fees ranged from $1000 to $61 734. Median (IQR) trauma activation fees were highest in the West ($18 099 [$10 741-$$27 607]), especially in California, where the median (IQR) activation fee was $24 057 ($15 979-$33 618). Trauma activation fees were also higher at for-profit hospitals, most of which were owned by the HCA Healthcare system, which had 43 trauma centers and a median (IQR) tier 1 trauma activation fee of $29 999 ($20 196-$37 589).

CONCLUSIONS AND RELEVANCE

In this study, trauma activation fees varied widely among hospitals in the US. Regional variation in these fees was substantial, with hospitals in the West charging substantially more than those in other locations. In addition, for-profit hospitals charged more than other types of hospitals. These findings suggest that some patients with serious traumatic injuries will incur disproportionately high trauma activation fees depending on the trauma center to which they are brought. Therefore, standardization of trauma activation fees is warranted.

Discrepancies in Outcomes by Race and Ethnicity in COVID-19 Patients Receiving Casirivimab and Imdevimab

OBJECTIVES

The Centers for Disease Control and Prevention has reported increased rates of coronavirus disease 2019 (COVID-19)-related hospitalizations and deaths in Black and Hispanic individuals. One contributing factor to this may be a difference in access to treatment. We thus sought to compare the outcomes of Black, non-Hispanic patients and Hispanic patients with White, non-Hispanic individuals using a group of patients with COVID-19 who received casirivimab/imdevimab.

METHODS

This was a secondary analysis of data from a previously published retrospective chart review of patients who received casirivimab/imdevimab for COVID-19 between December 9, 2020 and August 20, 2021, when they were treated at one of three facilities within a single hospital system. We compared the baseline characteristics (including age, sex, body mass index, duration of symptoms, and vaccination status) and outcomes of Black, non-Hispanic patients and Hispanic patients with those of White, non-Hispanic patients. Our primary outcome was the odds of a return visit to the emergency department (ED) within 28 days of treatment as assessed by multivariate logistic regression. We also assessed the rates of return visits to the ED for symptoms caused by COVID-19, hospitalizations, and hospitalizations from hypoxia.

RESULTS

In total, 1318 patients received casirivimab/imdevimab for COVID-19 at the three study facilities. Of these, 410 (31.1%) identified themselves as White and non-Hispanic, 88 (6.7%) as Black and non-Hispanic, and 736 (55.8%) as Hispanic. Vaccination rates at the time of treatment were as follows: Black, non-Hispanic 10.2%, Hispanic 13.6%, and White, non-Hispanic 21.5%. On multivariate analysis, the odds of return visits to the ED within 28 days were higher for Black, non-Hispanic patients and Hispanic patients as compared with White, non-Hispanic patients, with odds ratios of 2.8 (95% confidence interval [CI] 1.4-5.5, P = 0.003) and of 2.3 (95% CI 1.5-3.6, P = 0.0002), respectively. For hospitalizations caused by hypoxia within 28 days of treatment, the adjusted odds ratio for Black, non-Hispanic patients was 3.4 (95% CI 1.1-10.5, P = 0.03) as compared with White, non-Hispanic patients. There were no other statistically significant differences among groups in regard to subsequent hospitalizations within 28 days.

CONCLUSIONS

Black, non-Hispanic patients and Hispanic patients are more likely to make a return visit to the ED within 28 days after casirivimab/imdevimab treatment for COVID-19 as compared with White, non-Hispanic patients. This holds true even when adjusting for higher vaccination rates among White, non-Hispanic individuals.

A Retrospective Analysis of Serum D-Dimer Levels for the Exclusion of Acute Aortic Dissection

Purpose

Acute aortic dissection (AAD) is a highly fatal disorder if not promptly diagnosed. Some international studies have suggested that serum d-dimer levels may be used to exclude AAD, but data are limited. We sought to confirm that d-dimer levels are elevated in American patients with AAD. Additionally, we sought to estimate the test characteristics of the d-dimer for AAD.

Patients and Methods

We performed a retrospective analysis of patients in the Hospital Corporation of America database who arrived at the hospital between 2015 and 2019. We queried the database to find patients who had a diagnosis of AAD or (nonspecific) chest pain, and who also had a d-dimer performed within 24 hours of arrival at the hospital. The median d-dimer was compared in those diagnosed with AAD versus chest pain. We estimated the test characteristics of d-dimer for AAD at the standard cutoff value of 500 ng/mL.

Results

In total, 48,902 patients met the criteria for analysis, including 572 with AAD and 48,330 with chest pain. The median d-dimers were 2455 ng/mL and 385 ng/mL for the AAD and chest pain groups, respectively (p < 0.0001). Using a cutoff of 500 ng/mL, the sensitivity of the d-dimer was 91.1% and the specificity was 71.4%.

Conclusion

Serum d-dimer values are higher in patients with AAD than in those with nonspecific chest pain. At the standard cutoff of 500 ng/mL, the serum d-dimer has a high sensitivity for AAD, but not high enough that d-dimer levels alone can be used in isolation to exclude AAD.

Assessment and Management of Immune Thrombocytopenia (ITP) in the Emergency Department: Current Perspectives

Immune thrombocytopenia (ITP) is characterized by a platelet count less than 100 × 10^9/L without anemia or leukopenia. Patients with ITP may be asymptomatic, or they may have mild bleeding like petechiae, purpura, or epistaxis. In rare cases, they may present to the emergency department (ED) with life-threatening bleeding as a result of their thrombocytopenia. The emergency physician should thus be prepared to diagnose ITP and treat the bleeding that can result from it. The diagnosis of ITP requires excluding secondary causes of thrombocytopenia, and in the ED, the bare minimum workup for ITP includes a complete blood count and a peripheral blood smear. The peripheral blood smear should show a small number of large platelets with normal morphology, and there should not be an increased number of schistocytes. Many patients with ITP require no emergent treatment. However, if a patient with suspected ITP presents to the ED with critical hemorrhage, the emergency physician should initiate treatment with a platelet transfusion, corticosteroids, and intravenous immune globulin (IVIG) as soon as possible. For less severe bleeding, platelet transfusions are not recommended, and the treatment consists of corticosteroids by themselves or in conjunction with IVIG.

Ending the Pandemic: Are Rapid COVID-19 Tests a Step Forward or Back?

Some experts have promoted the use of rapid testing for COVID-19. However, with the current technologies available, continuing to replace laboratory-based, real-time reverse transcription polymerase chain reaction tests with rapid (point-of-care) tests may lead to an increased number of false negative tests. Moreover, the more rapid dissemination of false negative results that can occur with the use of rapid tests for COVID-19 may lead to increased spread of the novel coronavirus if patients do not understand the concept of false negative tests. One means of combatting this would be to tell patients who have a "negative" rapid COVID-19 test that their test result was "indeterminate."

Is the use of greater than 1 L of intravenous crystalloids associated with worse outcomes in trauma patients?

OBJECTIVE

Advanced Trauma Life Support guidelines recommend only 1 L of intravenous (IV) crystalloid before transitioning to blood products. We sought to determine if receiving >1 L of IV crystalloid during the initial resuscitation is associated with worse outcomes. We also sought to determine if receiving no crystalloids is associated with better outcomes.

METHODS

We performed a single center retrospective study using trauma registry data, which was supplemented by manual chart review. We only included patients who had an initial heart rate ≥ 100 beats/min or a systolic blood pressure ≤ 90 mmHg. For each patient, we determined the total amount of IV crystalloid administered in the first 3 h after arrival to the hospital plus prehospital crystalloid. We performed multivariate regression analyses to determine if there is an association between the administration of >1 L of crystalloids or no crystalloids with in-hospital mortality, hospital length of stay (LOS), or packed red blood cells (PRBCs) transfused.

RESULTS

Between January 1, 2018 and September 30, 2019, there were 878 who met criteria for enrollment. Among those, 55.0% received ≤1 L of IV crystalloids, and 45.0% received >1 L. Multivariate analyses showed no significant association between receiving >1 L and mortality (p = 0.61) or PRBCs transfused (p = 0.29), but patients who received >1 L had longer hospital LOS (p = 0.04). We found no association between receiving no crystalloids and mortality, PRBCs transfused, or LOS.

CONCLUSION

On a multivariate analysis of trauma patients, we did not find an association between the administration of >1 L of IV crystalloid and in-hospital mortality or the volume of PRBCs transfused. However, receiving >1 L of crystalloids was associated with a longer hospital LOS. We found no benefit to completely withholding crystalloids.

Blood Culture Results and Overtreatment Associated With the Use of a 1-Hour Sepsis Bundle

BACKGROUND

Some experts recommend using a 1-h sepsis bundle, but clinical data supporting this strategy are lacking.

OBJECTIVES

We aimed to determine the rate of, and clinical predictors for, bacteremia for patients undergoing a 1-h sepsis bundle, and to determine the percentage of "code sepsis" patients who are ultimately diagnosed with sepsis or a bacterial infection.

METHODS

This retrospective chart review evaluated code sepsis patients from three emergency departments (EDs) that utilize a 1-h sepsis bundle. The primary outcome was the rate of true-positive blood cultures. Secondarily, we analyzed various clinical factors using logistic regression analysis to determine which are associated with bacteremia.

RESULTS

Of the 544 code sepsis patients analyzed, 33.8% (95% confidence interval [CI] 29.9-38.0%) were ultimately diagnosed with sepsis, and 54.6% (95% CI 50.3-58.8%) were diagnosed with a bacterial infection. Exactly 7.0% (95% CI 5.0-9.5%) of the blood cultures performed were true positives. On multivariate logistic regression analysis, temperature > 38°C (100.4°F) or < 36°C (96.8°F), lactate > 4 mmol/L, and indwelling line/device were found to be positively associated with true-positive blood cultures.

CONCLUSION

In a group of code sepsis patients from facilities that use a 1-h sepsis bundle, the majority were ultimately not diagnosed with sepsis, and nearly half did not have a bacterial infection. A small minority of patients had bacteremia. Restricting blood culture ordering in patients with possible sepsis to only those who have increased risk for bacteremia could lead to a more judicious use of blood cultures.

I-FiBH trial: intravenous fluids in benign headaches-a randomised, single-blinded clinical trial

BACKGROUND

Many emergency physicians use an intravenous fluid bolus as part of a 'cocktail' of therapies for patients with headache, but it is unclear if this is beneficial. The objective of this study was to determine if an intravenous fluid bolus helps reduce pain or improve other outcomes in patients who present to the ED with a benign headache.

METHODS

This was a randomised, single-blinded, clinical trial performed on patients aged 10-65 years old with benign headaches who presented to a single ED in Las Vegas, Nevada, from May 2017 to February 2019. All patients received prochlorperazine and diphenhydramine, and they were randomised to also receive either 20 mL/kg up to 1000 mL of normal saline (the fluid bolus group) or 5 mL of normal saline (the control group). The primary outcome was the difference between groups in mean pain reduction 60 min after the initiation of treatment. Secondarily, we compared groups with regards to pain reduction at 30 min, nausea scores, the use of rescue medications and disposition.

RESULTS

We screened 67 patients for enrolment, and 58 consented. Of those, 35 were randomised to the fluid bolus group and 23 to the control group. The mean pain score dropped by 48.3 mm over 60 min in the fluid bolus group, compared with 48.7 mm in the control group. The between groups difference of 0.4 mm (95% CI -16.5 to 17.3) was not statistically significant (p=0.96). Additionally, no statistically significant difference was found between groups for any secondary outcome.

CONCLUSION

Though our study lacked statistical power to detect small but clinically significant differences, ED patients who received an intravenous fluid bolus for their headache had similar improvements in pain and other outcomes compared with those who did not.

TRIAL REGISTRATION NUMBER

NCT03185130.

The Appropriate Use of Testing for COVID-19

Many public officials are calling for increased testing for the 2019 novel coronavirus disease (COVID-19), and some governments have taken extraordinary measures to increase the availability of testing. However, little has been published about the sensitivity and specificity of the reverse transcriptase-polymerase chain reaction (RT-PCR) nasopharyngeal swabs that are commonly used for testing. This narrative review evaluates the literature regarding the accuracy of these tests, and makes recommendations based on this literature. In brief, a negative RT-PCR nasopharyngeal swab test is insufficient to rule out COVID-19. Thus, over-reliance on the results of the test may be dangerous, and the push for widespread testing may be overstated.

Assessing the Utility of Ultrasound and Urinalysis for Patients with Possible Epididymo-Orchitis - A Retrospective Study

Purpose

Many experts recommend ordering an ultrasound and a urinalysis on all patients with scrotal pain. While the ultrasound may help diagnose a number of potential causes of scrotal pain, the urinalysis primarily has value in assessing for epididymo-orchitis. This study sought to evaluate the utility of these diagnostic tests for patients who presented to the emergency department (ED) with acute scrotal pain and possible epididymo-orchitis.

Patients and Methods

This was a single-center chart review of patients presenting to the ED with scrotal pain. Trained research assistants reviewed charts to obtain urinalysis and ultrasound results as well as diagnoses and treatments provided. Using the final diagnosis as a gold standard, the sensitivity and specificity of ultrasound and urinalysis were calculated for the diagnosis of epididymo-orchitis. Also, through a prespecified definition of “changed management,” we estimated the percentage of cases in which a urinalysis changed management of patients with acute scrotal pain.

Results

We identified 663 adult and pediatric patients who presented with scrotal pain during 2016. All patients had an ultrasound performed, and 458 (69.1%) had a urinalysis done. The sensitivity of urinalysis for epididymo-orchitis was 58.2% (95% CI 48.9% to 67.1%), and the specificity was 85.1% (95% CI 80.8% to 88.7%). For ultrasound, the sensitivity was 78.8% (95% CI 71.4% to 85.0%) and the specificity was 98.1% (95% CI 96.4% to 99.1%). In 24 of 458 cases (5.2% [95% CI 3.4% to 7.7%]) where a urinalysis was obtained, its results may have changed management of the patient.

Conclusion

The diagnosis of patients who present to the ED with scrotal pain is primarily driven by the ultrasound results. While the urinalysis may occasionally provide some benefit in the evaluation of patients with suspected epididymo-orchitis, the reflexive ordering of a urinalysis in patients with scrotal pain may be unnecessary.

Assessing for Gender Disparities in the Selection of Chief Residents of Emergency Medicine Residency Programs

Introduction

Although the number of women physicians has been increasing, there may be gender disparities in the assessment of female emergency medicine residents. This study sought to determine if female emergency medicine residents are less likely to become chief residents than males.

Methods

In July 2017, an anonymous survey was distributed to the program coordinators of all accredited emergency medicine residency programs in the United States. The survey requested the number of males and females in each graduating class from 2015 to 2017. The percentage of female residents who were chief residents was calculated and compared to that for males. Secondly, an analysis was performed to see if the region of the country or method of chief resident selection was associated with the chances of females becoming chief residents.

Results

Program coordinators from 57 residency programs responded to our survey (34% response rate). Of the 683 females in the three graduating classes, 182 (26.6%) were selected as chiefs. This percentage was very similar for males: 26.7% (311/1164). No differences in the female chief resident percentages were seen based upon the region of the country. Females were more likely to be chief residents in programs that selected chief residents by resident vote. No other factor relating to how chief residents are selected was found to have a statistically significant association with the percentage of female chief residents.

Conclusions

We found no evidence of a gender disparity with regards to the selection of chief residents for emergency medicine programs.

Using Tenecteplase for Acute Ischemic Stroke: What Is the Hold Up?

Alteplase is the only Food and Drug Administration-approved intravenous (IV) thrombolytic medication for acute ischemic stroke. However, multiple recent studies comparing tenecteplase and alteplase suggest that tenecteplase is at least as efficacious as alteplase with regards to neurologic improvement. When given at 0.25 milligrams per kilogram (mg/kg), tenecteplase may have less bleeding complications than alteplase as well. This narrative review evaluates the literature and addresses the practical issues with regards to the use of tenecteplase versus alteplase for acute ischemic stroke, and it recommends that physicians consider tenecteplase rather than alteplase for thrombolysis of acute ischemic stroke.

The association of chest pain duration and other historical features with major adverse cardiac events

OBJECTIVE

We sought to determine if the duration of pain or other features of the history predict major adverse cardiac events (MACE) in patients with chest pain in the emergency department (ED).

METHODS

This was a prospective cohort study of patients presenting to a single ED with chest pain. Consenting patients filled out a survey about their symptoms. After 6 weeks, we assessed patients for MACE via chart review and direct contact. We used this data to calculate the likelihood ratios (LRs) of a number of historical features for acute myocardial infarction (MI) (primary endpoint) and MACE within 6 weeks (secondary endpoint). We planned a priori to analyze patients who reported chest pain for ≤1 min or continuously for ≥24 h.

RESULTS

We enrolled 1002 patients, and 83.6% had successful 6-week follow up. Regarding chest pain lasting for ≤1 min, the positive LR was 0.95 (95% CI 0.24 to 3.80) for acute MI and 0.67 (95% CI 0.17 to 2.72) for MACE within 6 weeks. The positive LRs of continuous pain lasting ≥24 h for acute MI and MACE within 6 weeks were 0.15 (95% CI 0.04 to 0.58) and 0.36 (95% CI 0.18 to 0.74), respectively. Amongst other historical features assessed, radiation to the right arm was the strongest positive predictor of acute MI.

CONCLUSION

Patients with continuous chest pain for ≥24 h are unlikely to have an acute MI. Chest pain lasting ≤1 min does not exclude acute MI.

Intravenous fluid bolus rates and pediatric diabetic ketoacidosis resolution

BACKGROUND

Recent data have challenged the notion that rapid intravenous fluid administration results in adverse neurologic outcomes in children with diabetic ketoacidosis (DKA). While many physicians still administer a cautious 10 cc/kg bolus of intravenous fluids for pediatric DKA patients, there may be benefits to using a larger bolus.

METHODS

This was a retrospective chart review of all pediatric patients with DKA presenting to a single emergency department (ED) between 2013 and 2015. Patients who received a bolus of 10 cc/kg or less in the ED were compared to patients who received >10 cc/kg of fluids. The primary outcome was the difference in hospital length-of-stay between the two groups. Secondarily, we compared groups with regards to the time to bicarbonate normalization.

RESULTS

In sum, 170 pediatric DKA ED visits were analyzed. Patients who received a 10 cc/kg bolus or less of fluids in the ED had a mean hospital length-of-stay > that was 0.38 days longer (95% CI: 0.006 to 0.75 days) than those who received >10 cc/kg. On multivariable regression analysis, the difference between groups was diminished and no longer statistically significant. The time to bicarbonate normalization was 0.12 days longer (95% CI -0.029 to 0.27) in the 10 cc/kg or less group than the >10 cc/kg group.

CONCLUSIONS

After adjustment for confounders, no statistically significant differences in outcomes were seen in pediatric DKA patients who received a 10 cc/kg bolus or less compared to those who received a larger initial bolus.

Rethinking Intravenous Catheter Size and Location for Computed Tomography Pulmonary Angiography

Introduction

Computed tomography pulmonary angiography (CTPA) is the test of choice for diagnosis of pulmonary embolism (PE) in the emergency department (ED), but this test may be indeterminate for technical reasons such as inadequate contrast filling of the pulmonary arteries. Many hospitals have requirements for intravenous (IV) catheter size or location for CTPA studies to reduce the chances of inadequate filling, but there is a lack of clinical data to support these requirements. The objective of this study was to determine if a certain size or location of IV catheter used for contrast for CTPA is associated with an increased chance of suboptimal CTPA.

Methods

This was a retrospective chart review of patients who underwent CTPA in the ED. A CTPA study was considered suboptimal if the radiology report indicated it was technically limited or inadequate to exclude a PE. The reason for the study being suboptimal, and the size and location of the IV catheter, were abstracted. We calculated the rate of inadequate contrast filling of the pulmonary vasculature and compared the rate for various IV catheter sizes and locations. In particular, we compared 20-gauge or larger IV catheters in the antecubital fossa or forearm to all other sizes and locations.

Results

A total of 19.3% of the 1500 CTPA reports reviewed met our criteria as suboptimal, and 51.6% of those were due to inadequate filling. Patients with a 20-gauge IV catheter or larger placed in the antecubital fossa or forearm had inadequate filling 9.2% of the time compared to 13.2% for patients who had smaller IVs or IVs in other locations (difference: 4.0% [95% confidence interval, −1.7%–9.7%]). There were also no statistically significant differences in the rates of inadequate filling when data were further stratified by IV catheter location and size.

Conclusion

We did not detect any statistically significant differences in the rate of inadequate contrast filling based on IV catheter locations or sizes. While small differences not detected in this study may exist, it seems prudent to proceed with CTPA in patients with difficult IV access who need emergent imaging even if they have a small or distally located IV.

Ultrasound-guided Placement of Single-lumen Peripheral Intravenous Catheters in the Internal Jugular Vein

Introduction

The peripheral internal jugular (IJ), also called the “easy IJ,” is an alternative to peripheral venous access reserved for patients with difficult intravenous (IV) access. The procedure involves placing a single-lumen catheter in the IJ vein under ultrasound (US) guidance. As this technique is relatively new, the details regarding the ease of the procedure, how exactly it should be performed, and the safety of the procedure are uncertain. Our primary objective was to determine the success rate for peripheral IJ placement. Secondarily, we evaluated the time needed to complete the procedure and assessed for complications.

Methods

This was a prospective, single-center study of US-guided peripheral IJ placement using a 2.5-inch, 18-gauge catheter on a convenience sample of patients with at least two unsuccessful attempts at peripheral IV placement by nursing staff. Peripheral IJ lines were placed by emergency medicine (EM) attending physicians and EM residents who had completed at least five IJ central lines. All physicians who placed lines for the study watched a 15-minute lecture about peripheral IJ technique. A research assistant monitored each line to assess for complications until the patient was discharged.

Results

We successfully placed a peripheral IJ in 34 of 35 enrolled patients (97.1%). The median number of attempts required for successful cannulation was one (interquartile range (IQR): 1 to 2). The median time to successful line placement was 3 minutes and 6 seconds (IQR: 59 seconds to 4 minutes and 14 seconds). Two lines failed after placement, and one of the 34 successfully placed peripheral IJ lines (2.9%) had a complication – a local hematoma. There were, however, no arterial punctures or pneumothoraces. Although only eight of 34 lines were placed using sterile attire, there were no line infections.

Conclusion

Our research adds to the growing body of evidence supporting US-guided peripheral internal jugular access as a safe and convenient procedure alternative for patients who have difficult IV access.

Effect of Nebulized Albuterol on Serum Lactate and Potassium in Healthy Subjects

OBJECTIVES

The objectives were to determine if nebulized albuterol causes an increase in the serum lactate level compared to placebo and, secondarily, to confirm that albuterol decreases serum potassium levels compared to placebo in patients with normokalemia.

METHODS

This was a randomized, double-blind, placebo-controlled trial. Twenty-eight healthy adult volunteers were assigned to receive either 10 mg of nebulized albuterol or placebo (nebulized saline) over 1 hour. Serum lactate was measured prior to treatment and at 30 and 70 minutes after the start of treatment. Serum potassium level was measured prior to treatment and at 70 minutes. The primary outcome was the degree of change in lactate level. The secondary outcome was the degree of change in potassium level.

RESULTS

In the 14 subjects who received albuterol, the mean increase in lactate was 0.77 mmol/L (95% confidence interval [CI] = 0.52 to 1.02 mmol/L), and the mean decrease in potassium level was 0.5 mEq/L (95% CI = -0.72 to -0.28 mEq/L). Among the subjects who received placebo, the lactate level decreased by 0.15 mmol/L (95% CI = -0.39 to 0.09 mmol/L) and there was no change in potassium level at (0.0 mEq/L [95% CI = -0.21 to 0.21 mEq/L]). These differences are statistically significant (p < 0.0001 and p = 0.003, respectively).

CONCLUSION

Nebulized albuterol increases lactate levels and decreases potassium levels in healthy adults.

Mistakes and Pitfalls Associated with Two-Point Compression Ultrasound for Deep Vein Thrombosis

Introduction

Two-point compression ultrasound is purportedly a simple and accurate means to diagnose proximal lower extremity deep vein thrombosis (DVT), but the pitfalls of this technique have not been fully elucidated. The objective of this study is to determine the accuracy of emergency medicine resident-performed two-point compression ultrasound, and to determine what technical errors are commonly made by novice ultrasonographers using this technique.

Methods

This was a prospective diagnostic test assessment of a convenience sample of adult emergency department (ED) patients suspected of having a lower extremity DVT. After brief training on the technique, residents performed two-point compression ultrasounds on enrolled patients. Subsequently a radiology department ultrasound was performed and used as the gold standard. Residents were instructed to save videos of their ultrasounds for technical analysis.

Results

Overall, 288 two-point compression ultrasound studies were performed. There were 28 cases that were deemed to be positive for DVT by radiology ultrasound. Among these 28, 16 were identified by the residents with two-point compression. Among the 260 cases deemed to be negative for DVT by radiology ultrasound, 10 were thought to be positive by the residents using two-point compression. This led to a sensitivity of 57.1% (95% CI [38.8–75.5]) and a specificity of 96.1% (95% CI [93.8–98.5]) for resident-performed two-point compression ultrasound. This corresponds to a positive predictive value of 61.5% (95% CI [42.8–80.2]) and a negative predictive value of 95.4% (95% CI [92.9–98.0]). The positive likelihood ratio is 14.9 (95% CI [7.5–29.5]) and the negative likelihood ratio is 0.45 (95% CI [0.29–0.68]). Video analysis revealed that in four cases the resident did not identify a DVT because the thrombus was isolated to the superior femoral vein (SFV), which is not evaluated by two-point compression. Moreover, the video analysis revealed that the most common mistake made by the residents was inadequate visualization of the popliteal vein.

Conclusion

Two-point compression ultrasound does not identify isolated SFV thrombi, which reduces its sensitivity. Moreover, this technique may be more difficult than previously reported, in part because novice ultrasonographers have difficulty properly assessing the popliteal vein.