UMEM Educational Pearls

Category: International EM

Title: New Antibiotics Desperately Needed

Keywords: Antibiotic resistance, bacterial pathogens (PubMed Search)

Posted: 3/15/2017 by Jon Mark Hirshon, MD, MPH
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The World Health Organization (WHO) recently published their first ever list of antibiotic-resistant "priority pathogens".  These 12 families of bacterial pathogens have the potential to be a significant threat to human health.

 

These bacteria are divided in critical, high and medium priority pathogens. 

 

The critical pathogens requiring R & D for new antibiotics are:

 

1.     Acinetobacter baumannii, carbapenem-resistant

2.     Pseudomonas aeruginosa, carbapenem-resistant

3.     Enterobacteriaceae, carbapenem-resistant, ESBL-producing

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Category: Orthopedics

Title: Groin Pain in Athletes

Keywords: stress fracture, runner (PubMed Search)

Posted: 3/11/2017 by Brian Corwell, MD
Click here to contact Brian Corwell, MD

22yo college track athlete presents with 3 weeks of gradual onset groin and thigh pain, worse with running, better with rest.

Stress fractures are a common cause of groin pain in athletes, particularly in long distance runners

Fractures occur in the pubic rami and femoral neck 

Ask about a sudden change in training regimens

PE: check for tenderness to deep palpation over the pubic ramus. Ask athlete to stand and support full weight on affected leg or perform one legged hop on affected side. Pain out of proportion to physical examination findings. 

Imaging: XR usually negative. Bone scans can be positive as early as 4 to 8 days after symptom onset. MRI used to diagnose and rule out other causes of groin pain.

Treatment: Rest for 4 to 6 weeks. Consider making patient non weight bearing if walking causes pain especially with femoral neck fractures on the superior side. Inferior side neck fractures may benefit from prophylactic fixation.

 

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Category: Neurology

Title: IV Fluids for Headache?

Keywords: headache, migraine, intravenous fluids, IVF (PubMed Search)

Posted: 3/8/2017 by WanTsu Wendy Chang, MD
Click here to contact WanTsu Wendy Chang, MD

 
IV Fluids for Headache?
  • Headache is the 4th most common ED visit in the US.
  • Clinical experience suggests that IV fluids (IVF) are commonly used as adjunctive treatment for headaches, however, the efficacy is unknown.
  • A retrospective study using the National Hospital Ambulatory Medical Care Survey (NHAMCS) found that ED length of stay was significantly greater in patients who received IVF than in those who did not (202 min vs. 131 min, p<0.001) even after adjusting for initial pain score, sex, age, and mode of arrival. 
  • A post-hoc analysis of data collected from 4 ED-based migraine trials found that IVF was not associated with improvement of pain score or sustained headache freedom.
  • There is no current evidence to suggest a direct analgesic effect of IVF in the treatment of headaches.

 

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Preoxygenation in Critically Ill Patients

  • Achieving adequate preoxygenation and denitrogenation prior to intubating critically ill patients can be challenging.
  • Critically ill patients have physiologic alterations (i.e., derangements in oxygen consumption, anemia, reduced cardiac output, air space disease) that can markedly reduce safe apnea time.
  • For patients with significant air space disease and shunt physiology, noninvasive ventilation (NIV) can decrease shunt fraction, increase functional residual capacity, improve PaO2, and lengthen safe apnea time.
  • Importantly, NIV should be used for at least 3 minutes to achieve improvements in alveolar recruitment.
  • It is also important to remove NIV just prior to larygnoscopy, as alveoli will begin to derecruit when NIV is removed.

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Category: Geriatrics

Title: Inappropriate Medications - Submitted by Jill Logan, PharmD, BCPS

Keywords: Beers list, iatrogenic, medications, pharmacology (PubMed Search)

Posted: 3/5/2017 by Danya Khoujah, MBBS
Click here to contact Danya Khoujah, MBBS

The Beers' Criteria lists 34 classes of medications that may be potentially inappropriate for geriatric patients due to a high risk of complications including increased risk for falls. When prescribing medications from the emergency department in geriatric patients, try to avoid these categories if other options are available.

http://www.americangeriatrics.org/files/documents/beers/BeersCriteriaPublicTranslation.pdf

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Takeaways

The addition of diazepam to naproxen for patients with acute, nontraumatic, nonradicular lower back pain did not improve pain or functional outcomes at 1 week or 3 months after ED discharge compared to placebo.

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Category: Toxicology

Title: Drug induced Excited Delirium

Keywords: EDS, Excited Delirium (PubMed Search)

Posted: 3/2/2017 by Kathy Prybys, DO
Click here to contact Kathy Prybys, DO

Excited delirium syndrome (EDS) is a life-threatening condition caused by a variety of factors including drug intoxication.  EDS is defined as altered mental status, hyperadrenergic state, and combativeness or aggressiveness. It is characterized by tolerance to significant pain, tachypnea, diaphoresis, severe agitation, hyperthermia, non-compliance or poor awareness to direction from police or medical personnel, lack of fatigue, superhuman strength, and inappropriate clothing for the current environment. These patients are at high risk for sudden death. Toxins associated with this syndrome include:

  • Lysergic acid diethylamide (LSD)
  • Phencyclidine (PCP)
  • 3,4-methylenedioxymethamphetamine (Ecstasy)
  • Cocaine
  • Methamphetamine
  • Synthetic cathinones ("Bath salts")Mephedrone, Methylone,  Methylenedioxypyrovalerone (MDPV), designer drugs similar to amphetamine.
  • Synthetic cannbinoids

Ketamine at 4mg/kg dose can be given by intramuscular route and has been demonstrated to be safe and effective treatment for EDS.

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Emergency department crowding is an almost universal problem. Whether it is called "access block" (Austalia) or "boarding" (United States), it is seen everywhere.

 

The American College of Emergency Physicians (ACEP) states that "a “boarded patient” is defined as a patient who remains in the emergency department after the patient has been admitted to the facility, but has not been transferred to an inpatient unit."

 

It should be clear that the primary cause of overcrowding is boarding: the practice of holding patients in the emergency department after they have been admitted to the hospital, because no inpatient beds are available. This practice has been shown to have an adverse impact on patients, with longer delays causing greater morbidity and mortality.

 

ACEP has created resources to help address this issue, including an emergency medicine practice paper on high impact solutions. See: file:///Users/jhirshon/Downloads/EMPC_Crowding%20IP_092016%20(1).pdf

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Category: Critical Care

Title: Ketamine For Acute Agitation in the Emergency Department

Keywords: Ketamine, agitated delirium (PubMed Search)

Posted: 2/28/2017 by Rory Spiegel, MD (Updated: 9/26/2017)
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A recently published study adds to the growing body of literature supporting the use of IV//IM ketamine as a first line agent for the control of the acutely agitated patient. In this observational cohort Riddell et al found patients given ketamine more frequently achieved adequate sedation at both 5 and 10 minutes compared to benzodiazepines, Haloperidol, given alone or in combination. This rapid sedation was achieved without an increase in the need for additional sedation or the rate of adverse events. 

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Category: Orthopedics

Title: Essex-Lopresti injury pattern

Keywords: forearm trauma (PubMed Search)

Posted: 2/25/2017 by Brian Corwell, MD (Updated: 9/26/2017)
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The Essex-Lopresti injury pattern is the lesser known of the triad of forearm injuries (Monteggia & Galeazzi).

It follows the “rule of the ring” aka the life saver candy rule: You can’t break a life saver in just one place.

These injury patterns are frequently missed because our eyes are drawn to the fracture and miss the associated dislocation.

The Essex-Lopresti fracture pattern involves a fracture of the radial head with concomitant dislocation of the distal radio-ulnar joint (DRUG)

               -With associated interosseous membrane disruption

Think of it as the Maisonneuve fracture of the forearm.

Mechanism: fall from height/high energy forearm trauma.

PE: Suspect if patient has significant tenderness at the DRUG with a radial head fx.

Patients have worse outcomes if injury is missed on initial presentation due to radial migration and instability.

Take home point: Remember the rule of the ring. Remember to exam the elbow with wrist injuries and the wrist with all elbow injuries

https://image.slidesharecdn.com/tgc9gbsusz6yf9gnomzq-signature-b704f322087ef3e158e7aa08078573cfc5a04ec6f8a3a982d1fcb26597be3f6d-poli-150513093239-lva1-app6891/95/elbow-injury-13-638.jpg?cb=1431509645


Category: Neurology

Title: Strokes in Young Adults

Keywords: stroke, alcohol, substance abuse, mimics (PubMed Search)

Posted: 2/22/2017 by Danya Khoujah, MBBS (Updated: 9/26/2017)
Click here to contact Danya Khoujah, MBBS

  • 15% of all cases of ischemic strokes occur in patients less than 45 years old.
  • To put things into perspective, incidence of stroke in this age group is twice that of multiple sclerosis.
  • Delayed diagnosis is due to several factors:
    • The relative rarity of the diagnosis in comparison to stroke mimics at this age, the 3 most common being: migraines, seizures, and Bell's palsy. 
    • Atypical presentations, such as acute vestibular syndrome. 
    • Although “typical" risk factors (such as smoking, diabetes and hypertension) are present in young patients with strokes, other factors to be considered are high-risk alcohol consumption, cocaine use (especially smoked), physical inactivity, sleep 6 hours or less a night, and known thrombophilia. 

 

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Category: Orthopedics

Title: Low Back Pain Treatment

Keywords: Back Pain, Treatment (PubMed Search)

Posted: 2/18/2017 by Michael Bond, MD (Updated: 9/26/2017)
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Treatment of  Low Back Pain

A recent recommendation from the American College of Physicians (Internal Medicine) now recommends nonpharmacologic therapies as the first line treatment of acute or subacute lower back pain lasting 12 weeks or less.  This might bring more people to our Emergency Departments so it is important that we know their current recommendations.

Some nonpharmacologic therapies recommended are:

  • Moderate Evidence: Superficial heat
  • Low quality evidence: Massage, Spinal manipulation, or accupuncture

For acute back pain they recommend:

  • NSAIDs or muscle relaxants
  • Acetominophen is NOT recommended. No evidence it is beneficial

For chronic back pain:

  • Start with NSAIDs—>tramadol—>duloxetine.
  • Opioids are only recommended for treatment failures.

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Question

A 12 year old with arm pain after doing push ups during gym class.  What is the diagnosis?

 

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Attachments

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Category: Toxicology

Title: Suboxone for managing opioid addiction

Keywords: Buprenorphine, Suboxone (PubMed Search)

Posted: 2/16/2017 by Kathy Prybys, DO
Click here to contact Kathy Prybys, DO

Takeaways

The current opioid epidemic is considered the worst drug crisis in American history responsible for 50,000 deaths per year in the US from overdose of heroin and opioid prescription drugs. A 200% increase in the rate of overdose deaths involving opioids occurred between 2000 and 2014. The continued rise in opioid related deaths calls for an urgent need for treatment. Three types of medication-assisted therapies (MATs) are available for treating patients with opioid addiction:methadone, buprenorphine, and naltrexone. Suboxone a combination of buprenorphine and naloxone, is emerging as one of the best choices for the following reasons:

  • Buprenorphine is a partial agonist that suppresses opioid withdrawal and cravings.
  • Binds opioid receptors with high affinity but low intrinsic activity.
  • Lasts 24 hours. Binds opioid receptors to prevent full opioid agonists such as heroin or prescription opioids from binding.
  • Less risk for dependency as increasing doses does not result in full opioid effect.
  • Less respiratory depression in overdose due to partial effect.
  • Naloxone, an opioid antagonist is poorly absorbed by oral route and is added to discourage injecting or snorting of suboxone as it can precipitate severe withdrawal.
  • Precipitated withdrawal can occur if other opioids are present with administration of Suboxone. This is particularly important with long acting opioids such as methadone.
  • Can be prescribed in the primary care setting and does not require a specialized clinic.
  • Comes in 2 or 8 mg tablet or sublingual film.

 

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Category: International EM

Title: Congenital Zika Syndrome

Keywords: Zika, arbovirus, pregnancy, congenital (PubMed Search)

Posted: 2/15/2017 by Jon Mark Hirshon, MD, MPH (Updated: 9/26/2017)
Click here to contact Jon Mark Hirshon, MD, MPH

Congenital infection with the Zika virus is associated with 5 types of birth defects

·      These are rarely or never seen with other infections during pregnancy

 

·      These defects are:

1.     Severe microcephaly (small head size) resulting in a partially collapsed skull

2.     Decreased brain tissue with brain damage

3.     Damage to the back of the eye with a specific pattern of scarring and increased pigment

4.     Limited range of joint motion, such as clubfoot

5.     Too much muscle tone restricting body movement soon after birth 

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Category: Critical Care

Title: Sepsis Mimics

Posted: 2/14/2017 by Mike Winters, MD (Updated: 9/26/2017)
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Sepsis Mimics

  • Emergency physicians are well versed in the resuscitation of patients with sepsis and septic shock.
  • With the recent publication of the 2016 SSC Guidelines and the emphasis in meeting various quality measures, sepsis is routinely included in the differential diagnosis of critically ill patients.
  • Notwithstanding, it is important to consider other disease states that can present similarly to sepsis or septic shock.  Some of these include:
    • Anaphylaxis
    • Adrenal insufficiency
    • DKA
    • Thyroid storm
    • Toxic ingestion or withdrawal

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Question

56 year-old male with history of hypertension presents with complaints of right scrotal swelling and pain. Denies any urinary symptoms, abdominal pain, nausea/vomiting or change in bowel habits or prior episodes. Temp was 99.0.

A scrotal ultrasound was done and an image of the right testis was seen (below). What's the diagnosis?

 

 

 

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Category: Airway Management

Title: Pediatric Elbow X-ray Interpretation

Keywords: Elbow, fracture, trauma (PubMed Search)

Posted: 2/11/2017 by Brian Corwell, MD (Updated: 9/26/2017)
Click here to contact Brian Corwell, MD

Is that a fracture or a growth plate?

Pediatric elbow x-rays are complicated to interpret due to the large number of ossification centers.

Elbow trauma is common in pediatrics.

Ossification centers of the elbow appear in a reliable chronologic pattern which aids in distinguising fractures from growth plates.

Note the age ranges are an estimate with great variability. For example, girls can develop these up to 2 years earlier than boys.

The numbers 1/3/5/7/9/11 correspond to the average age of development of each ossification center

Years of fusion shown below in ()

Capitellum (12-14yo)

Radial head (14-16yo)

Medial epicondyle (16-18yo)

Trochlea (12-14yo)

Olecranon (15-17yo)

Lateral epicondyle (12-14yo)

Pneumonic: "Can't Resist My Team Of Lawyers"

Consider ordering films of both elbows to compare if in doubt.

How is this useful? If the trochlear center is present, but there is no medial epicondyle then you are most likely looking at a fx where the ossification center has been avulsed and displaced. 

 


Category: Neurology

Title: Back to the Basics: Aphasia

Keywords: aphasia, fluency, comprehension, repetition, Broca's aphasia, Wernicke's aphasia, conduction aphasia (PubMed Search)

Posted: 2/8/2017 by WanTsu Wendy Chang, MD
Click here to contact WanTsu Wendy Chang, MD

 
Back to the Basics: Aphasia
  • Aphasia is an impairment of language
  • 3 important assessments in an aphasic patient are fluencycomprehension, and repetition (see attached figure)
  • Patients with fluent speech are able to generate speech spontaneously, though the content of their speech may have errors
  • Patients with non-fluent speech have difficulty initiating speech
  • Patients who have fluent speech but are unable to repeat have a problem with comprehension or a disconnect between the sensory and motor components of language
    • In Wernicke’s aphasia, patients cannot comprehend what they read and hear 
    • In conduction aphasia, patients can comprehend what they read and hear

 

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Attachments

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Category: Critical Care

Title: Predicting peri-Intubation hypotension

Keywords: peri-Intubation hypotension, shock index (PubMed Search)

Posted: 2/7/2017 by Rory Spiegel, MD (Updated: 9/26/2017)
Click here to contact Rory Spiegel, MD

Identifying patients at risk of hypotension during intubation is not always straight forward. The prevalence of peri-intubation hypotension in the Emergency Department has been demonstrated to be approximately 20%.1 And while certain variables increase the likelihood of peri-intubation hypotension (ex. Shock index> 0.80), no single factor predicts it accurately enough to be used at the bedside.2 In the majority of patients undergoing intubation, clinicians should be prepared for peri-intubation hypotension with either vasopressor infusions or push dose pressors.

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