UMEM Educational Pearls

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: 2/7/2026)
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: 2/7/2026)
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: 2/7/2026)
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: 2/7/2026)
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: 2/7/2026)
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: 2/7/2026)
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: 2/7/2026)
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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Title: Pediatric out of hospital termination of cardiac arrest

Category: EMS

Keywords: TOR, pediatric cardiac arrest (PubMed Search)

Posted: 3/19/2025 by Jenny Guyther, MD (Updated: 2/7/2026)
Click here to contact Jenny Guyther, MD

A few states have pediatric out of hospital termination of resuscitation protocols.  This study used CARES data to create a termination protocol that was not only linked to ROSC, but also to neurological outcomes.  This study only included medical arrests.
 

21240 children were included in the study where 2326 patients survived to hospital discharge.  A total of 1894 survived with a favorable neurological outcome.  The criteria developed for pediatric TOR in this study had a specificity of 99.1% and a PPV of 99.8% for patient death.  Another set of criteria had a 99.7% specificity and PPV of 99.9% for predicting death or survival with poor neurological outcome.

TOR criteria of death consisted of:

  1. unwitnessed arrest

  2. asystole

  3. arrest not due to drowning or electrocution

  4. no sustained ROSC

TOR criteria of death or survival with poor neurological outcome:

  1. unwitnessed arrest

  2. asystole

  3. arrest not due to drowning or electrocution

  4. no sustained ROSC

  5. no bystander CPR

Bottom line: Pediatric termination of resuscitation in the out of hospital setting can be appropriate under the right set of conditions.

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Title: Lipohemarthrosis

Category: Ultrasound

Keywords: POCUS; MSK; fracture (PubMed Search)

Posted: 3/17/2025 by Alexis Salerno Rubeling, MD (Updated: 2/7/2026)
Click here to contact Alexis Salerno Rubeling, MD

On ultrasound, lipohemarthrosis—the presence of blood and fat in the joint cavity—is a key clinical indicator of an intra-articular fracture.  

Lipohemarthrosis appears as three distinct layers near the joint line.  

  • Superficial Layer- hyperechoic fat with circular anechoic fat globules 
  • Middle Layer- Anechoic Serum 
  • Deep Layer- Slightly hyperechoic, representing clotted blood 

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Title: Kidney injury grading scale

Category: Trauma

Keywords: kidney trauma, grading, (PubMed Search)

Posted: 3/16/2025 by Robert Flint, MD (Updated: 2/7/2026)
Click here to contact Robert Flint, MD

Unless a patient is unstable, renal injuries are managed non-operatively or endovascularly. Here is the
2025 Kidney Injury Grading Scale from AAST.
 

AAST          AIS

Grade   Severity                                            Imaging Criteria
I                    2                                         –Subcapsular hematoma <3.5 cm without active bleeding

                                                                 – Parenchymal contusion without laceration
 

II                   2                                        – Parenchymal laceration length <2.5 cm
                                                                 – HRD <3.5 cm without active bleeding
 

III                  3                                          – Parenchymal laceration length ?2.5 cm
                                                                  – HRD ?3.5 cm without active bleeding
                                                                  – Partial kidney infarction
                                                                  – Vascular injuries without active bleeding
                                                                  – Laceration extending into urinary collecting system and/or urinary extravasation

IV                  4                                             – Active bleeding from kidney
                                                                    – Pararenal extension of hematoma
                                                                    – Complete/near-complete kidney infarction without active bleeding
                                                                    – MFK without active bleeding
                                                                     – Complete/near-complete ureteropelvic junction disruption

V                    5                                           – Main renal artery or vein laceration or transection with active bleeding
                                                                    – Complete/near-complete kidney infarction with active bleeding
                                                                   – MFK with active bleeding

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Title: Patient care for Muslim patients during Ramadan

Category: Administration

Keywords: Ramadan, fasting (PubMed Search)

Posted: 3/15/2025 by Hanna Hussein, MD (Updated: 2/7/2026)
Click here to contact Hanna Hussein, MD

Ramadan is the holy month in the Islam faith, where observers will fast from sunrise to sunset.  This includes food, water, some medications, smoking and sex.  This can obviously have some impact on patients' health, especially when presenting to the ED.  Here are some considerations to keep in mind:

  • In general, there are exemptions to fasting for pregnant persons, children,  breastfeeding persons, and people travelling. 
  • Bleeding is considered a contraindication to fasting, so menstruating women are exempt.  Some people may interpret this to mean they cannot give blood or have lab work done, but there is an exemption for medical purposes
  • Volume status is probably the main area to be concerned about.  Always ask your patients if they are currently fasting and explain why IV fluids would be necessary

As with everything, maintaining cultural awareness and compassion will help to

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Title: Seizures By Age - The Simple Febrile Seizure

Category: Pediatrics

Keywords: pediatrics, fever, seizure (PubMed Search)

Posted: 1/9/2025 by Kathleen Stephanos, MD (Updated: 3/14/2025)
Click here to contact Kathleen Stephanos, MD

Simple Febrile Seizures are a very common cause for presentation to the Emergency Department. 

Up to 5% of children will have one in their lifetime, and a single febrile seizure increases risk of recurrence. 

Definition:

  • Age 6 months to 60 months (5 years)
  • <15 minutes of seizure activity
  • No focal seizure activity
  • Fever of >100.4 within 24 hours
  • 1 seizure within 24 hours
  • Return to baseline with no focal deficits
  • No history of seizures without fever (this is provoked

While not part of the formal definition, the following details are critical to obtain on history, and high risk features that should not be missed on initial evaluation:

  • Antibiotics use (within 48 hours of the seizure)
  • Vaccination status

Evaluation and Management:

Consider a finger stick

Most patients can be discharged to home after a period of observation - most use a 2-4 hour minimum. More recent literature suggests considering a longer observation period in patients who have seizures at lower core body temperatures (<39°C) or those with a history of recurrent simple febrile seizures (2 simple febrile seizures within 24 hours with return to baseline in between)

Obtain a lumbar puncture in all patients with symptoms of meningitis 

Consider a lumbar puncture, lab evaluation, and prolonged observation in patients who are under-vaccinated/unvaccinated/unknown vaccination status between 6 months and 12 months of age, or received antibiotics within the last 48 hours

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