UMEM Educational Pearls

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.

Show References



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.

Show References



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.

Show References



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: 3/27/2025)
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.”

Show References



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.

Show References



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: 3/27/2025)
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.

Show References



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: 3/27/2025)
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.

Show References



Title: Lipohemarthrosis

Category: Ultrasound

Keywords: POCUS; MSK; fracture (PubMed Search)

Posted: 3/17/2025 by Alexis Salerno, MD (Updated: 3/27/2025)
Click here to contact Alexis Salerno, 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 

Show References



Title: Kidney injury grading scale

Category: Trauma

Keywords: kidney trauma, grading, (PubMed Search)

Posted: 3/16/2025 by Robert Flint, MD (Updated: 3/27/2025)
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

Show References



Title: Patient care for Muslim patients during Ramadan

Category: Administration

Keywords: Ramadan, fasting, DEI (PubMed Search)

Posted: 3/15/2025 by Hanna Hussein, MD (Updated: 3/27/2025)
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

Show References



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

Show References



Title: Tenecteplase is FDA-approved for Acute Ischemic Stroke

Category: Pharmacology & Therapeutics

Keywords: tenecteplase, alteplase, stroke (PubMed Search)

Posted: 3/10/2025 by Ashley Martinelli (Updated: 3/13/2025)
Click here to contact Ashley Martinelli

On March 3, 2025, the FDA approved tenecteplase to treat acute ischemic stroke.  Historically, only alteplase was FDA-approved, but the stroke guidelines suggest tenecteplase as a reasonable alternative and many centers have made the change to use tenecteplase.  

The EXTEND-IA TNK trial showed benefit of tenecteplase over alteplase in patients who were candidates for mechanical thrombectomy.  The newer AcT trial found that tenecteplase was non-inferior to alteplase for patients eligible for thrombolysis, regardless of thrombectomy candidacy. There was no difference in safety outcomes, specifically ICH or angioedema in either trial.

Tenecteplase will soon be available in a new 25 mg vial with stroke-specific packaging (potentially as early as June 2025). Currently, there is only a 50 mg vial that is used for STEMI and PE which has higher maximum dosing compared to stroke.

The dosing is now recommended in weight-based groupings based on the supplemental appendix from the AcT trial. This is likely a change in practice for most centers that previously implemented tenecteplase for stroke before the FDA approval.  Consult with your stroke and pharmacy team to discuss potential protocol changes at your institution.

Show References



Title: Droperidol: The Hack you didn't know was a hack!

Category: Gastrointestional

Keywords: Droperidol, abdominal pain (PubMed Search)

Posted: 3/13/2025 by Neeraja Murali, DO, MPH (Updated: 3/27/2025)
Click here to contact Neeraja Murali, DO, MPH

Many of us probably use droperidol for pain relief in the ED. If you don't, two recent studies highlight it's use in multimodal pain control:

-In the DRUGS study (2023), droperidol reduced opiod use (46% vs 60%), lowered pain scores (median of 9 vs 5), and decreased the need for antiemetics (60% vs 73%).  Before you ask - mean pain score wasn't reported!

-This study evaluated gastroparesis patients, with most common dose of droperidol being 1.25 mg IV

-the DREAMER study (2024) showed that pateitns receiving droperidol required fewer opiods (median 10 Morphine Milligram Equivalents vs 19.4 MME). No significant different in need for antiemetics

-This study evaluated abdominal pain patients, with 2.5 mg IV being the most common dose

Neither study found statistically significant differences in length of stay. Additionally, neither study reported major adverse effects or healthcare costs. Note that these were both single center trials as well. 

With droperidol shortages ongoing, suggestions were made to directly compare droperidol to haloperidol, with hopefully more research coming soon!

Show References



So you have a patient who is pregnant and has abdominal pain. You, as the astute provider you are, decide to do an ultrasound to rule out an ectopic, and low and behold! You see a gestational sac and a yolk sac within the uterus! You show your patient, you both breathe a sigh of relief, and you discharge them…

But they return two weeks later, now hypotensive, excruciating pain, and extremely pale. On an emergent bedside ultrasound, you see copious amounts of free fluid, and OBGYN tells you, after they rush your patient to the OR, that it was an ectopic - but how? The pregnancy was in the uterus!

Welcome everyone to the world of interstitial and angular pregnancies, pregnancies that are much closer to the endometrium than normal ectopic pregnancies and therefore have a much higher chance of progressing further before they rupture, meaning that when they do, they are devastating!

To evaluate for these ectopics, make sure that you get a mantle distance on every pregnancy ultrasound you do looking for an ectopic. Mantle distance is measured from the end of the gestational sac to the outer edge of the thinnest side of endometrium. If your value is >0.8cm, you should be okay. If it's less than <0.5cm, you most likely have an ectopic. Between 0.5cm and 0.8cm, consult OB urgently or have extremely close follow up for your patient. 

Show References



Title: Sarcopenia as a marker of frailty in trauma patients?

Category: Trauma

Keywords: Sarcopenia, trauma, ct scan (PubMed Search)

Posted: 3/9/2025 by Robert Flint, MD (Updated: 3/27/2025)
Click here to contact Robert Flint, MD

Having a readily measurable variable to identify frailty on admission for critically injured patients would help prognosticate morbidity, mortality, and discharge destination. Sarcopenia has been used to prognosticate length of stay, discharge destination, and physical function recovery in oncology and general surgery patients. Sarcopenia is defined as “age-related progressive loss of muscle mass and strength. The main symptom of the condition is muscle weakness. Sarcopenia is a type of muscle atrophy primarily caused by the natural aging process. Scientists believe being physically inactive and eating an unhealthy diet can contribute to the disease.” 1. This study looked at admission CT scan psoas muscle sarcopenia in 197 critically injured patients. The authors concluded:

“For trauma critical care patients, sarcopenia on admission CT was associated with dependent discharge destination and therefore is unfavourable. Defining sarcopenia early in a trauma patient’s critical care admission may help to identify those at risk of poor outcomes.” 2

Show References



Lidocaine transdermal patches 

Frequently used for lower back pain.

 A single 5% patch contains 700mg of lidocaine.

There is low systemic absorption. 

Data supporting efficacy for lower back pain are limited. 

Best benefit in other neuropathic conditions such as post herpetic neuralgia.

Topical capsicum 

Underused, safe, non-sedating.

Potential treatment option for acute and subacute back pain (<3 months duration). 

Can be OTC or via prescription.

Available in cream, lotion and patches. 

Best used 3-4 times per day for maximal effectiveness.

Grade A recommendation from North American Spine Society.

Show References



Title: Trauma outcome differences between males and females

Category: Trauma

Keywords: Male. Female, outcome, trauma (PubMed Search)

Posted: 3/6/2025 by Robert Flint, MD (Updated: 3/27/2025)
Click here to contact Robert Flint, MD

The Pan-Asia Trauma Outcomes Study database was reviewed for differences in in-hospital mortality and functional capacity at discharge between male and female trauma patients. There were 76,000 trauma patients from 12 Asian countries in this study. The authors concluded: “This study indicates no difference in the general trauma outcomes in the Asia Pacific between females and males. Although younger females with less severe injuries had better functional outcomes, this advantage disappeared in severe injuries and those over 50 years.” There were several differences in mechanism of injury and age of presentation. “With females more frequently represented in the ??50 age group (60.13%) compared to males (44.87%) (p?<?0.001). Trauma type also varied between sexes; 95.51% of females experienced blunt trauma compared to 93.65% of males (p?<?0.001). Anatomically, males predominantly sustained injuries to the head, face, thorax, abdomen, and upper extremities, whereas females more frequently suffered injuries to the lower extremities and spine (p?<?0.001).” This is similar toEuropean and North American data

Show References



Title: ALS vs BLS level of care and trauma outcomes

Category: Trauma

Keywords: EMS, AlS, trauma, Bls, outcome (PubMed Search)

Posted: 3/5/2025 by Robert Flint, MD (Updated: 3/27/2025)
Click here to contact Robert Flint, MD

Large retrospective propensity matching study looking at mortality in trauma patients based on ALS vs.  BLS transport crew found lower mortality in those attended by ALS crews. The matching was “based on patient age, sex, year, ICD-10-CM based injury severity score, mechanism of injury, AIS based body region of injury, EMS characteristics including time with patient and prehospital interventions performed, prehospital vital signs, and trauma center designation.”
This is different than other studies which showed limited difference. other studies have shown improved survival with police “scooping and running” with penetrating trauma patients. 

 

Show References



Title: Mechanical Ventilatory Strategies in Acute Brain Injury Patients -- The VENTIBRAIN Study

Category: Critical Care

Keywords: Mechanical Ventilation, Brain Injury, ICH, Stroke, Hypercapnea, Hypoxia, Hyperoxia (PubMed Search)

Posted: 3/4/2025 by Mark Sutherland, MD
Click here to contact Mark Sutherland, MD

Intubation and mechanical ventilation of brain injured patients, which is extremely common in the Emergency Department, can be very challenging and subject to significant practice variation.  It is often said that brain injured patients “can't take a joke”, meaning that they are less tolerant to hemodynamic and metabolic perturbations, and these perturbations tend to be associated with very large swings in their clinical outcomes.  For example, hypo/hyperglycemia, hypo/hypernatremia, hypo/hypertension, hypo/hyperoxia, hypo/hypercapnea, etc are all extremely important to avoid.  This is probably the one patient population where “euboxia” (the notion that we obsess too much about making all the numbers pretty in the EMR) is probably not as applicable.  As such, there is at least good physiologic rationale, and now increasing empirical evidence, that ventilating these patients very thoughtfully is extremely important and likely to have meaningful impact on patient-oriented outcomes (mortality, neurologic outcome, etc).

The VENTIBRAIN study was a prospective observation trial of 2,095 intubated patients in 26 countries who had TBI, ICH (including SAH), or acute ischemic stroke.  Interestingly, they found that patients with lower tidal volume (TV) per predicted body weight had higher mortality (although the majority of their TVs were well controlled and in a fairly tight range), which is contrary to conventional thinking in pulmonary pathologies like ARDS.  They also found that higher driving pressure (DP) was associated with higher mortality, which agrees with data from other conditions.  PEEP and FiO2 had U-shaped curves, but FiO2 in particular tended to favor lower FIO2, also similar to current thinking for ICU patients in general.  

Take Home Points:

  1. Although most brain injury patients have relatively normal pulmonary function, lung compliance, ventilator waveforms, etc, their ventilatory parameters (TV, PEEP, DP, pCO2/pH, oxygenation, etc) should be carefully monitored and a deliberate strategy to manage these parameters is essential.  Haphazard ventilatory strategies in these patients are clearly associated with poorer patient-oriented outcomes.
  2. It's possible (although not definitively proven) that aggressively low TVs in these patients may lead to hypercapnea - which we know is poorly tolerated in brain injured patients - and worse outcomes.  The role of classic “permissive hypercapnea” (ala ARDS management, goal pH > 7.2) in these patients is unclear, and one should probably be more judicious in letting these patients get overly acidotic or hypercapneic, as opposed to other pathologies like ARDS where this is probably more allowable.  
  3. Despite the paradoxical finding with low TVs, high driving pressure remains an important predictor of mortality in essentially all critical patient populations.   Care should be taken to minimize DP (guidelines say < 15 cm H2O, but goal should be minimum achievable value while meeting pCO2/pH targets).  DP/PEEP titrations should be carried out regularly when feasible (not all providers are comfortable with this practice, but it is safe and easy to learn, see references below).
  4. Hypoxia and hyperoxia are both extremely dangerous for this population.  The minimum FiO2 needed to achieve a pulse oximetry reading of around 90-96% (exact numbers vary slightly by guideline and any underlying pulmonary pathology) should be used.  Be very wary of the pulse ox sitting constantly at 100% in these patients.

Show References



Title: POCUS for Retained Products of Conception

Category: Ultrasound

Keywords: POCUS, OB, retained products of conception (PubMed Search)

Posted: 3/3/2025 by Alexis Salerno, MD
Click here to contact Alexis Salerno, MD

A recent study evaluated the accuracy of POCUS in detecting retained products of conception (RPOC) in the emergency department.  

In this study, a patient was considered positive for RPOC if they had heterogenous material in the endometrium measuring 10 mm or more. Color Doppler was not used for further evaluation, though it has been cited in obstetric literature as a helpful tool.  

Among the 265 patients included, the prevalence of RPOC was 21.5%. POCUS had a sensitivity of 79.0 % and a specificity of 93.8 %. 

The authors caution against the use of POCUS to diagnose RPOC in the setting of early pregnancy, as the endometrium can have a variable appearance, increasing the risk of a misdiagnosis. Of the 22 false positives identified, more than half were potentially viable pregnancies. Uterine fibroids can also lead to a heterogenous appearance of the uterus and can be another potential false positive.

Show References