UMEM Educational Pearls

This study looked at pre-trauma mental health diagnosis (from medical records) and post-trauma mental health symptoms as assessed by survey. The majority of patients suffered blunt trauma and mean age was 67. Having pre/traumatic mental health diagnosis and particularly post-traumatic symptoms lead to worse health outcomes and financial conditions.  Further work needs to be done to assess how to improve mental health symptoms post-traumatic injury.

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Non benzodiazepine muscle relaxants

Muscle relaxants were the most commonly (32%) prescribed medication upon discharge from the ED for lower back pain.

Are they effective?

Muscle relaxants, such as cyclobenzaprine, provide short term pain-relief for patients with acute low back pain compared to placebo.

There is little difference in efficacy among the various muscle relaxants.

Evidence for muscle relaxants for back pain is weak compared to NSAIDs, so limit use to patients who have contraindications to NSAIDS.

There is no strong evidence that combination therapy with NSAIDs is more effective than NSAIDs alone.

If using during the day, consider using a lower dose (cyclobenzaprine 5mg) and a higher dose at night (10mg).

If treating with NSAIDs, consider using only at night to promote sleep.

Also, limit use to those patients who can tolerate the side effect profile of muscle relaxants, which include anticholinergic effects, dizziness, and sedation.

Risks of these agents increase with age, so should be used with caution in older adults.

Often given to this population due to fears of NSAID side effects.

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Title: Seizures By Age - Juvenile Myoclonic Epilepsy

Category: Pediatrics

Keywords: Pediatrics, seizures, adolescent, myolonic jerks (PubMed Search)

Posted: 4/11/2025 by Kathleen Stephanos, MD
Click here to contact Kathleen Stephanos, MD

Presentation:

JME is a common cause of juvenile/adolescent seizures. 
Patients typically present between 12-18 years of age with a combination of myoclonic movements, absence seizures and generalized tonic-clonic seizures. 
This diagnosis is often mistaken for morning clumsiness due to the myoclonic movements and asking about myoclonic movements can help make the diagnosis.

Diagnosis:

Diagnosis is primarily based on history. Myoclonic seizures are required to make the diagnosis. Patients with consistent history can receive outpatient EEG to confirm the diagnosis. 
No ED images or tests needed with the correct clinical history and return to baseline. (even outpatient with appropriate history imaging is not needed as it is usually normal)
 

Treatment:

Valproic acid is typically the treatment of choice for patients though must be used with caution in women of childbearing age. Other common treatment options include levetiracetam and lamotrigine. With the correct clinical history, these can be started in the ED. 

Be sure to discuss good sleep hygiene and avoidance of alcohol with patients as these can be triggers.

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Title: Albuterol and Increased Lactate

Category: Pharmacology & Therapeutics

Keywords: Albuterol, Lactate (PubMed Search)

Posted: 4/10/2025 by Wesley Oliver (Updated: 12/5/2025)
Click here to contact Wesley Oliver

Albuterol, a common bronchodilator used in the treatment of asthma and chronic obstructive pulmonary disease (COPD), can cause a surprising increase of lactate levels. The increase in lactate is usually mild to moderate (typically < 4 mmol/L) and transient. It does not necessarily indicate underlying sepsis, tissue hypoxia, or severe metabolic acidosis.

Mechanism:

Albuterol can cause a transient increase in lactate levels due to its beta-2 agonist effects, which promote glycogenolysis and increase anaerobic metabolism. This can result in elevated lactic acid production, even in the absence of tissue hypoxia or shock. 
 

Timing:  

This effect is typically seen within 30 minutes of albuterol administration and can persist for 1-2 hours after discontinuing treatment. 
 

Monitoring:

If lactate levels are elevated in a patient receiving albuterol, consider the possibility of a pharmacologic cause rather than immediately assuming a more serious etiology like shock or severe metabolic disturbance. 
 

Differentiating Causes of Elevated Lactate:
In a critically ill patient, elevated lactate can indicate hypoperfusion (e.g., septic shock, cardiogenic shock, or hypovolemic shock). However, when elevated lactate is associated with albuterol administration, the rise in lactate is often lower and resolves without intervention. 
 

Management:
If albuterol-induced lactate elevation is suspected, continue with supportive care and monitor lactate trends. No specific treatment is necessary for the elevated lactate unless there are other concerning clinical findings that suggest a different underlying cause. 
 

Conclusion:
In emergency settings, it's important to recognize that albuterol can cause a transient increase in lactate levels. Understanding this phenomenon can help avoid misdiagnosis and prevent unnecessary interventions in patients receiving albuterol therapy. Always correlate lactate levels with the broader clinical picture to guide management decisions.

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Flow rates are, in theory, determined by Poiseuille’s Law, which states that the flow rate depends on fluid viscosity, pipe length, and the pressure difference between the ends of the pipe .  

Of course we won’t be calculating this during a resuscitation! Nor would it be useful if we did: the equation assumes laminar flow, whereas turbulent flow is more likely.  Nor is it practical to look up the viscosity of crystalloid/blood/plasma, which also dramatically impacts flow rates.   

Instead, remember this equation:  Larger + shorter = faster  

And keep in mind the following:

  1. Excess IV tubing can decrease your flow rate no matter the size of your catheter
  2. All connectors (J-loops, needlefree connectors, etc) will dramatically decrease your flow rate.  Do not add to the catheter if your goal is faster flow!

In practice, our friends in Australia actually put common catheters to the test, and provided these helpful results:

Or, as a picture:

Note, these flow rates were achieved using crystalloid.  Blood will be slower due to higher viscosity.

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Do you ever tell your patients to “follow up with your primary care physician in 3-5 days”? How many of them actually do it? And does it make a difference? 

Study Overview:
This study is a retrospective analysis of 28,085 adults (?20 years) presenting with acute abdominal pain (AAP) at 15 German emergency departments (EDs) in 2016.

Key Findings:

Hospitalization rate:

39.8% were admitted to the hospital from the ED.

Outpatient Care (OC) Before ED Visit:

33.9% had an OC visit within 3 days before their ED visit.

Of these, 48.6% were hospitalized.

Outpatient Care After ED Visit:

62.7% had OC follow-up within 30 days.

Factors Increasing Hospitalization Odds:

Age ?65 years: aOR 3.05

Prior OC: aOR 1.71

Male sex: aOR 1.44

In-Hospital Mortality:

3.1%

ED Re-visits Within 30 Days:

More likely in age ?65: aOR 1.32

Less likely with prior OC: aOR 0.37

Conclusion:
Acute abdominal pain in the ED is associated with high hospitalization and mortality rates, especially in older adults and those with prior outpatient visits. Prior outpatient contact is linked with both increased admission likelihood and reduced risk of ED re-visits, highlighting its complex role in care continuity. Improving outpatient care access and coordination may reduce ED burden and enhance outcomes for AAP patients.

While there are other factors to consider ie the health care system and its infrastructure, this does provide some interesting food for thought about what happens when we discharge patients.

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A recent systematic review and meta-analysis evaluated the diagnostic accuracy of ultrasound in detecting acute diverticulitis. The analysis included 12 studies with a total of 2,056 patients. Ultrasound demonstrated a sensitivity of 92.5% (95% CI: 86.9%–95.8%) and a specificity of 87.7% (95% CI: 75.7%–94.2%). 

The most commonly used diagnostic criteria across the studies included: 

  • Presence of diverticula with tenderness on graded compression 
  • Bowel wall thickness > 4 mm 
  • Pericolic fat inflammation

Similar to prior research on POCUS for nephrolithiasis, these findings support a POCUS-first approach for patients at low risk for serious alternative diagnoses. Ultrasound is a great alternative for patients with contraindications to contrast-enhanced CT, such as those with contrast allergies. 

As the authors state, while ultrasound may be effective in identifying acute diverticulitis and its complications, such as abscess, additional imaging with CT may still be required to assess the severity of complications.

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Title: Appendicitis: What is the score?

Category: Gastrointestional

Keywords: Appendicitis, scoring, prediction, Alvarado Score (PubMed Search)

Posted: 4/6/2025 by Robert Flint, MD (Updated: 12/5/2025)
Click here to contact Robert Flint, MD

Missed appendicitis leading to rupture and peritonitis leads to morbidity, mortality, and malpractice claims. Part of a longer article looking at evaluation and management of appendicitis, these authors provide three scoring systems that can be used to identify appendicitis. Use of these scores can guide imaging and surgical consultation. 

 

Alvarado Score: If a patient scores 1 to 4, the risk of appendicitis drops to 33%. If a patient scores >5, the risk of acute appendicitis is 66% or greater.

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Title: Is it cocaine, fentanyl or amphetamine? Yes.

Category: Toxicology

Keywords: Toxicology, contaminate, opiate, stimulant (PubMed Search)

Posted: 4/5/2025 by Robert Flint, MD (Updated: 12/5/2025)
Click here to contact Robert Flint, MD

This study from Australia reminds us that what patients think they ingested isn’t always what they did ingest. A high percentage of “cocaine” and other stimulants was actually fentanyl or other opiates. The authors do  a nice job referencing similar studies in the United States. Any overdose could be a mixed picture due to impure street drugs.

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Title: Perinatal HIV transmission

Category: Obstetrics & Gynecology

Keywords: HIV; perinatal transmission (PubMed Search)

Posted: 4/3/2025 by Michele Callahan, MD (Updated: 12/5/2025)
Click here to contact Michele Callahan, MD

Perinatal HIV transmission in the U.S. can approach rates of <1% if appropriate interventions are offered to both pregnant individuals and their neonates.

However, a recently published case series evaluating hospitals in Maryland noted that there were 6 new cases of perinatal HIV transmission in 2022, compared with nationwide decreases and zero cases in the state of MD in 2021. Transmission was believed to be related to several issues: delayed entry to prenatal care, HIV diagnosis occurring in pregnancy (as opposed to pre-conception), adherence in the setting of hardships such as substance use, and delays in anti-retroviral therapy (ART) initiation during pregnancy.

How can we work to lower perinatal HIV transmission? Opportunities include the use of pre-exposure prophylaxis (PrEP), routine HIV testing in individuals of child-bearing age (especially if at high-risk of HIV acquisition), and rapid initiation of ART in pregnant individuals. As emergency physicians and providers, we are at the front line of assessing for these barriers and getting patients the resources they need to minimize perinatal transmission.

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Title: Lidocaine vs Amiodarone for Refractory VT/VF

Category: Critical Care

Keywords: OHCA, cardiac arrest, refractory VT/VF, shockable, ventricular arrhythmia, amiodarone, lidocaine (PubMed Search)

Posted: 4/2/2025 by Kami Windsor, MD (Updated: 12/5/2025)
Click here to contact Kami Windsor, MD

A 2023 retrospective cohort study comparing amiodarone to lidocaine for in-hospital cardiac arrests (IHCA) with refractory VT/VF found that use of lidocaine was associated with increased chance of ROSC, 24 hour survival, survival to discharge, and favorable neurologic outcome at hospital discharge.[1] 

Now, a recent study comparing amiodarone to lidocaine in the pre-hospital setting for OHCA has found similar results. [2] Another retrospective cohort study using propensity score matching, they evaluated 23,263 adult patients with OHCA and defibrillation refractory VT/VF managed by 1700 EMS agencies. 

Use of lidocaine was associated with greater odds of prehospital ROSC, fewer post-drug administration defibrillations, and greater odds of survival to discharge.

In comparison to earlier trials, these studies are some of the first demonstrating benefits to lidocaine use over amiodarone that reach statistical significance, but of course have all the limitations that come with retrospective studies and are not further analyzed in the context of etiologies for cardiac arrest or application of post-ROSC care. 

Bottom Line: If you happen to be someone who reaches for amiodarone as your go-to, it may be time to start considering lidocaine. 

  • Initial dose: 1 to 1.5 mg/kg IV/IO.
  • For refractory VF may give additional 0.5 to 0.75 mg/kg IV push, repeat in 5 to 10 minutes; maximum 3 doses or total of 3mg/kg.

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Title: The Jarisch-Herxheimer reaction

Category: Infectious Disease

Keywords: JHR, syphillis, penicillin (PubMed Search)

Posted: 3/31/2025 by Robert Flint, MD (Updated: 12/5/2025)
Click here to contact Robert Flint, MD

The Jarisch-Herxheimer reaction (JHR) is a non-specific set of symptoms (fever, malaise, worsened rash, hemodynamic instability, leukocytosis) seen after treating syphillis and other spirochete induced infections.  In this study 1 in 4 patients treated with 2.4 million units of benzathine penicillin G developed a short lived JHR. Those who developed the reaction were more likely HIV negative,  had  secondary syphillis and had successful treatment at 6 months.

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OTC Medication and Concussion Recovery

A recent cohort study performed by the NCAA and US Department of Defense looked at NCAA athletes and military cadets who had suffered a concussion.

The study included 1661 NCAA athletes and military cadets, mean age was about 18 years, and 45% were women.

In these groupings, 813 people took over-the-counter pain relievers after their concussion and 848 people did not take any pain relievers.

Analgesics used included medications such as acetaminophen or NSAIDs such as ibuprofen.

Acetaminophen (n = 600), NSAIDs (n = 75), and those taking both (n = 78).

Outcomes: Time to clearance for activity without restrictions

 1)  50% recovery

  1. 90% recovery

Results:

  1. There was no difference between the type of pain reliever taken and recovery
  2. Patients who took OTC analgesics had lower symptom severity scores
  3. Patients who took OTC analgesics were cleared at 50% recovery  two days faster, and at 90% recovery seven days faster than those who took no medication.
  4. Those who initiated OTC analgesics on the first day of injury returned to play and had resolution of symptoms approximately eight days faster than those who started taking medication after five or more days.

Conclusion: Consider early initiation of OTC analgesics in concussed patients at time of discharge.

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Title: Using ASA score to predict outcomes in moderate/severe head injury patients.

Category: Trauma

Keywords: ASA score, trauma, head injury, prognostication (PubMed Search)

Posted: 3/29/2025 by Robert Flint, MD
Click here to contact Robert Flint, MD

The American Society of Anesthesia score was an independent predictor of 90-day mortality as
well as low functional status at one year in 720 patients presenting to a single center with
moderate to severe brain injury. When used in conjunction with other prognosticating tools such
as the Trauma and Injury Severity Score, it increased the prognostic value of these scales.

ASA Score – Department of Radiology

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Title: Low-Molecular-Weight Heparin versus Unfractionated Heparin for Treatment of Cerebral Venous Sinus Thrombosis

Category: Neurology

Keywords: Cerebral Venous Sinus Thrombosis, CVST, Low-Molecular-Weight Heparin, Unfractionated Heparin (PubMed Search)

Posted: 3/27/2025 by Nicholas Contillo, MD
Click here to contact Nicholas Contillo, MD

Anticoagulation is the mainstay of treatment of cerebral venous sinus thrombosis, irrespective of whether associated venous hemorrhage is present. Anticoagulant selection is variable, with physicians opting for unfractionated heparin (UFH) about 72% of the time in one international study. However, recent evidence favors the use of low-molecular-weight heparin (LMWH), with meta-analytic data showing trends towards lower mortality rates and improved functional outcomes in LMWH cohorts. UFH is often viewed more favorably due to the ability to rapidly discontinue the infusion in the event of major bleeding; however, risk of major bleeding complications were actually found to be lower in patients treated with LMWH compared to UFH. Further, LMWH has many pharmacological and practical benefits compared to UFH, including more predictable pharmacokinetics, reduced risk of heparin-induced thrombocytopenia (HIT), lack of need for frequent aPTT monitoring, ease of administration (daily subcutaneous injection), and ease of transition to outpatient therapy. 

Takeaway: Consider LMWH (1.5mg/kg subcutaneously once daily) as first-line treatment for CVST in patients with acceptable renal function.

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Title: Team Dynamics in Emergency Medicine

Category: Administration

Keywords: Team building, belonging, team dynamics, emergency physicians, emergency nurses (PubMed Search)

Posted: 3/25/2025 by Mercedes Torres, MD (Updated: 3/26/2025)
Click here to contact Mercedes Torres, MD

Better teamwork creates better outcomes in emergency medicine. This study investigated how communication practices between physicians and nurses in the ED influence team dynamics and the sense of belonging to the healthcare team.

Methods: 38 emergency physicians and emergency nurses from EDs within a single metropolitan area participated in focus groups.

Positive Influences on Team Belonging:

  1. Proactivity and anticipating needs: Physicians specifically demonstrated proactivity by “talking to the triage (nurse), talking to the charge (nurse) about what is it that I can be doing to help.” Nursing identified anticipating the physician’s equipment and workflow needs as a helpful anticipatory task.
  2. Projecting openness: Projecting openness through verbal or nonverbal techniques was associated with more open lines of communication and improved team dynamics. For example, asking the team “what are we missing?” to invite input from all team members on the care plan.
  3. Less formal name conventions: Knowing and calling each other by first names increased healthy relationships among team members, especially between physician and nurses.
  4. Building relationships outside of work: Establishing a relationship and getting to know a team member was described as helpful when subsequent brisk professional communication is required, such as during the care of a critically ill patient.

Negative Influences on Team Belonging:

  1. Giving up on or resisting communication  
  2. Dismissal of ideas from nursing
  3. Suggestions of laziness with regards to team members

The findings emphasize the importance of fostering positive communication practices to enhance team dynamics, cohesiveness, and overall well-being within ED healthcare teams.

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Title: Adjuvant corticosteroids for Community Acquired Pneumonia – A new treatment option?

Category: Critical Care

Keywords: community acquired pneumonia; CAP; corticosteroids; mortality; adjuvant therapy (PubMed Search)

Posted: 3/25/2025 by Quincy Tran, MD, PhD
Click here to contact Quincy Tran, MD, PhD

If you watch those medical drama (House MD, ER, Grey’s Anatomy, Resident…), the doctors and residents are always faced with a dilemma – is it a rare autoimmune disorder or is it an infection? They are worried that if they give steroid to a patient with infections, that would kill the patients.
Well, it might not be the case for Community acquired pneumonia.

A meta-analysis of randomized control trials involving 3224 patients to look into the efficacy of adjuvant corticosteroids for CAP. The authors assessed the heterogeneity of treatment effect (different groups should have different response to treatment).
For patients who were anticipated to benefit (those who had CRP > 240 mg/L), corticosteroids were associated with lower odds of 30-day mortality (OR 0·43 [0·25–0·76], p=0·026).

When stratifying by risk, there was no significant effect between those with Pneumonia Severity Index (PSI) I-III versus those with PSI IV-V. 
However, corticosteroids increased odds of hyperglycemia (OR 2·50 [95% CI 1·63–3·83], p<0·0001), odds of hospital readmissions (1·95 [1·24–3·07], p=0·0038)

Discussion:
There were different regiments for corticosteroids in the included studies. However, hydrocortisone appeared to be more effective than other corticosteroids.
Furthermore, the time intervals for treatment is still debatable. The data suggested that the ideal treatment is within 24 hours of hospital admission, but patients can still benefit from treatment in up to 48 hours.
A response-dependent treatment is also recommended: 8 days or 14 days, depending on how patients respond to treatment by day 4.
Conclusion:
Adjuvant treatment with corticosteroids among hospitalized patients with CAP was significantly associated with reduction of 30-day mortality. The treatment effect, however, varied according to patients CRP concentrations at baseline.

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Title: Multimodal pain control in rib fractures

Category: Trauma

Keywords: Trauma, rib fracture, multimodal (PubMed Search)

Posted: 3/23/2025 by Robert Flint, MD (Updated: 12/5/2025)
Click here to contact Robert Flint, MD

Controlling pain from rib fractures impacts morbidity and mortality. Over the past decade there has been a focus on decreasing opiate use and approaching this painful condition in a multimodal way. “The multimodal approach utilizes a combination of delivery methods including oral, parenteral, and regional single-shot or catheter-based techniques. Oral medications include opioids, non-steroidal anti-inflammatory drugs (NSAIDs), acetaminophen, skeletal muscle relaxants, alpha-2 agonists, mood stabilizers, and neuropathic pain medications. Parenteral medications encompass most of the oral options in addition to ketamine and lidocaine. Regional anesthesia includes epidural analgesia (EA), paravertebral blocks, intercostal blocks, and myofascial plane blocks.”

This study is a single center in Canada looking at medication used for patients admitted over 10 years with rib fractures along with demographics, injury severity and outcomes. The authors concluded:

“Although multimodal pain management strategies have improved over time, a large proportion of patients, even among those with flail chest, still do not receive multimodal pain management. Elderly patients, at highest risk of adverse outcomes, were less likely to receive multimodal pain management strategies and should be the target of performance improvement initiatives.”

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Achieving faster homeostasis in trauma patients leads to lower mortality, less coagulopathy, and lower total blood volume transfusion requirements. This study looked at time to achieving homeostasis as defined by transfusion requirements as well as laboratory measurements in critically ill trauma patients who either received whole blood or component therapy transfusion as part of their resuscitation.  Those receiving whole blood achieved statistically significant faster homeostasis.

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Title: Is there an optimal CPR duration in pediatric cardiac arrest?

Category: Pediatrics

Keywords: CPR, pediatric cardiac arrest, termination, TOR (PubMed Search)

Posted: 3/21/2025 by Jenny Guyther, MD (Updated: 12/5/2025)
Click here to contact Jenny Guyther, MD

This was a retrospective analysis of pediatric cardiac arrests that occurred out of hospital in Japan, where no pediatric termination of resuscitation is allowed.  1007 arrests were included.  Patients that were placed on ECMO were excluded.  This study included both medical and traumatic arrests looking at a primary outcome of 1 month moderate or better neurological disability.  CPR time for both EMS and the hospital prior to ROSC were included.  Bystander CPR was not included in these calculations.  Possible downtime prior to CPR was not taken into consideration.

Overall, less than 1% of pediatric patients exhibited one-month moderate disability or better neurological outcome when total CPR duration is more than 64 minutes.

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