A just released study published in the Lancet gives us guidance on which pediatric blunt trauma patients need cervical spine imaging. Age range was 0-17 years.
“Out of 22,430 children included in the study, 433 (1.9%) were found to have Cervical spine injury (CSI). The study identified 4 high risk factors for CSI to be used to triage children to CT (12% risk for a cervical spine injury):
In children without high-risk findings, 5 additional findings identified children with intermediate, non-negligible risk of CSI (3.6% risk of a cervical spine injury):
The Lever test can be used to examine for a torn ACL
May be helpful when examining larger patients
Place patient supine with both knees extended. Examiner places fist below the proximal third of patient’s calf.
With the other hand, the examiner presses down on the distal third of the patient’s quadriceps.
Positive test: A torn ACL disrupts the lever arm of the lower leg. The heel will not rise.
Negative test: An intact ACL allows the lever arm of the lower leg to lift the heel. The heel will rise.
More study is needed but reported sensitivities are similar to classic tests such as the anterior drawer or Lachman.
Breastfeeding provides a great nutrition source for infants, but early cessation is common for a wide variety of reasons. Notably, being asked to withhold breastmilk (“pump and dump”) due to safety concerns or illness increases rates of termination.
A recent paper is an invaluable reference on commonly used medications in the care of emergency department women of childbearing age and the lactation risk. It breaks down medications into clinical categories and then further highlights those that are safe, likely safe, and safe-but may reduce milk supply, and those to avoid.
The majority of commonly used medications in the ED are safe to use in breastfeeding. Only 3% of the medication analyzed should be avoided (aspirin [at doses > 325mg/day], dicyclomine, prochlorperazine, and benzonatate) and in most cases a safe alternative could be used.
Using these recommendations can help prescribe safe medications, prevent the recommendations to pump and dump, and relieve stress for the patient breastfeeding.
Consider adding the LactMed(R) app to your phone as well - This is a free database through the NIH to search individual medications to assess risk in lactation.
BACKGROUND:
Cardiac arrest is time sensitive disease. Despite significant advances in resuscitation technology such as eCPR and mechanical compression devices, early basic life support interventions (specifically bystander CPR) are strongly associated with survival. EMS systems must advocate for early initiation of bystander CPR. Dispatch Assisted CPR (DA-CPR) is one of several strategies designed to improve outcomes and encourage early compressions. To optimize survival, EMS systems should achieve a comprehensive understanding about barriers to succesful initiation of DA-CPR.
METHODS AND OUTCOMES:
49,165 patients with out of hospital cardiac arrest were eligible for inclusion the study, and over 36,000 underwent successful DA-CPR. The study's primary outcome was good neurological recovery at hospital discharge. Secondary outcomes included: prehospital return of spontaneous circulation (ROSC)and survival to hospital discharge. The authors defined successful DA-CPR when bystanders initiated compressions and continued resuscitation until the arrival of EMS.
RESULTS:
Quite a few results were consistent with prior studies. Unsuccessful DA-CPR was associated with:
Successful DA-CPR was more likely associated with the presence of family members at the scene and improved neurological recovery. Witnessed arrests were also more likely to receive successful DA-CPR. Not surpringly, patients in the successful DA-CPR group also exhibited improved survival to discharge and prehospital ROSC.
BOTTOM LINE:
Though the study is retrospective and involves a host of confounding variables, EMS systems continue to identify modifiable factors linked to the delivery of DA-CPR. Improved community CPR education and dispatcher training may contribute to higher DA-CPR rates.
BALTIMORE, MD, SPECIFIC PEARL:
Baltimore metropolitan jurisdictions are collaborating with the CPR LifeLinks program to address DA-CPR. The CPR LifeLinks program a national initiative “to help communities save more lives through implementation of telecommunicator and high performance CPR programs." https://www.911.gov/projects/cpr-lifelinks/
We heard it before. Continuous administration of antibiotics might be associated with better outcomes. However, results from smaller randomized controlled trials of beta-lactam showed inconsistent conclusions. Therefore, a large RCT was conducted
Settings: 31 ICUs in Croatia, Italy, Kazakhstan, Russia between June 2018 – August 2022.
Randomized, double-blind control trial.
Participants:
Outcome measurement:
Study Results:
Discussion:
Conclusion:
In critically ill patients with sepsis, continuous administration of meropenem did not improve mortality nor reduce the emergence of pandrug resistant bacteria.
In a critically ill trauma patient, the FAST exam is used to evaluate for potential internal injuries. Specifically, the subxiphoid view of the FAST exam helps assess for signs of pericardial tamponade. However, distinguishing between a pericardial effusion and an epicardial fat pad can be challenging.
One study indicated that the sensitivity of EPs in differentiating between effusion and fat pad was 73%, with a specificity of 44% when reviewing difficult patient video clips.
Here are some tips to help you distinguish between effusion and fat pad:
Change your view: Use the parasternal long axis view, which is more sensitive for effusion. Fat pads are usually anteriorly, and effusions tend to accumulate posteriorly in a supine patient.
Screen for other signs of tamponade: Adjust your subxiphoid view to visualize the IVC entering the right atrium, allowing better visualization of the right side of the heart.
Movement: Fat tends to move synchronously with the heart, whereas hemopericardium moves independently.
Echogenicity: Fat typically appears brighter on ultrasound, while blood tends to be less echogenic.
For further learning, refer to the supplemental Material from the referenced articles.
This article from JAMA is targeted at inpatient management of asymptomatic hypertension, however, it’s a great reminder that “hypertensive urgency” is not an entity. We should be treating the patient and not the numbers. Gradual, out patient lowering of asymptomatic hypertension is the safe and proper way to approach this. Spread the word to your friends in primary care, urgent care, dental, and other office based practices.
This article serves as a great reminder that our older patients are on a significant amount of medications and many of these medications effect cognition. Cognitively impaired patients are at risk of medication errors. High risk medications in older patients include anticoagulants, opioids, anticholinergics, hypoglycemic/insulin and sedating medications. The authors found:
It is important to ask how the patient takes (or doesn’t take) their medications as well as other social determinate of health such as living alone.
Hyperkalemia is less common than hypokalemia in pediatric patients, though it is not uncommon to have hemolysis in patients who receive heel stick lab work.
The age of the patient is critical to determining the cutoff for hyperkalemia:
Typically, levels up 6.0mmol/L are well tolerated in children, unless the shift is rapid. For any child meeting age related hyperkalemia or who have a known lower prior potassium level should receive an ECG.
Treatment for hyperkalemia is similar to adults
Calcium Chloride (20mmg/kg - Max 1g) or Calcium Gluconate (0.5ml/kg - Max 20ml) is given for cardiac stability.
Albuterol can be given based on weight
Insulin and dextrose can be used with extreme caution and close monitoring for hypoglycemia. (Dextrose should be given as D10% in children under 5 years of age, D25% can be used if > 5 years old)
Lactational mastitis (inflammation of the breast in individuals who are lactating) affects up to 20% of breastfeeding individuals. It is characterized by localized breast pain with erythema, edema, and systemic symptoms such as fever/chills and malaise. Supportive treatment measures include the use of NSAIDS, heat and/or ice, and continued feeding or emptying of the breast (stagnant milk can allow for progression of infection). If there is no response to supportive measures within 24 hours, pursuing antibiotic therapy is appropriate. Staphylococcus and Streptococcus species are common organisms responsible for bacterial mastitis; first-line treatment options include Dicloxacillin 500 mg QID or Cephalexin 500 mg QID for 10-14 days. If there is a concern for MRSA, Clindamycin or Bactrim may be used but are considered second-line. Bactrim should be avoided in breastfeeding individuals with infants <1 month or infants who are jaundiced or premature.
Complications of mastitis can include early termination of breastfeeding, breast abscess, and systemic infection if untreated. Ultrasound can be used to assess for breast abscess in patients who do not respond appropriately to antibiotics.
A cut-off of 35mm on CT scan has been shown to be predictive of which traumatic pneumothoracies require thoracostomy tube placement vs. safety of observation. This retrospective study looked at chest X-ray findings to see if there was a similar size cut-off where patients could be safely observed rather than undergo this invasive procedure. They found 38mm was the size over which observation failed. Of note, lactic acidosis and need for supplemental oxygen also predicted the need for chest tube placement
POCUS for DVT is a tricky examination.
Exam of positive study on transverse:
Longitudinal Image showing clot:
In this prospective, observational study of trauma patients with isolated head trauma, 62% of patients developed post-intubation hypotension. Comparing patients receiving hypertonic saline, vasopressors, crystalloid, or blood those receiving hypertonic saline and vasopressors had less post-intubation hypotension.
TBI patients who develop hypotension have worse outcomes. This study reminds us the use of vasopressors in trauma patients to maintain blood pressure is appropriate in the correct circumstances.
The Infectious Disease Society of America in 2023 recommended a single dose of an aminoglycoside for uncomplicated cystitis treatment in those with resistance or other contraindications to first line oral agents who were otherwise well enough to be discharged. This very small study (13 participants) suggest this strategy works for complicated (“male sex, urinary flow obstruction, renal failure or transplantation, urinary retention, or indwelling catheters”) cystitis patients who could otherwise be discharged home.
What is the best provocative test for the diagnosis of carpal tunnel syndrome?
A 2022 study included 37 observational studies to assess the diagnostic accuracy of these provocative maneuvers.
Meta-analysis totaling 2662 wrists of patients with carpal tunnel syndrome.
Surprisingly, the winner was a test that is less familiar to some of us who were taught the traditional tests such as the Phalen test, Tinel test or the carpal tunnel compression test.
Hand elevation has been known to reproduce the symptoms of carpal tunnel syndrome.
The hand elevation test demonstrated the best clinical performance for the diagnosis of carpal tunnel syndrome.
The beauty of the test is that it is as simple to perform as the name suggests.
Have the patient raise their hands above their head for one minute.
Hands are raised actively and without strain, keeping the elbows and shoulders relatively loose. That’s it!
A positive test reproduces the symptoms of carpal tunnel syndrome
The hand elevation test has a high sensitivity (75%-86%) and specificity (89%-98.5%)
Take home: Consider adding this bedside provocative test as the first screening test for patients with suspected carpal tunnel syndrome
Free Biostatistics Software Options
EpiCalc 2000 – available for Windows. Capabilities include sample size calculation, inferential statistics (p values, 95% CI), simple stratified analysis, paired and independent analyses. Right clicking allows you to do many things. (http://www.brixtonhealth.com/epicalc.html). I've had the most experience with this one.
Epi Info – supported by CDC. Available for Windows and for hand-held. (https://www.cdc.gov/epiinfo/index.html)
P/S – Power and Sample Size Calculation – available for Mac and Window. Supported by Vanderbilt biostatistics. (https://biostat.app.vumc.org/wiki/Main/PowerSampleSize)
Participation in meetings is an expected part of most (if not all) of our jobs. How many of these meetings are necessary? Could some of the “work” of meetings be accomplished with a few emails or other asynchronous forms of communication? Are meetings cluttering your schedule and making it impossible to get any real work done?
Some answers to these questions are offered in a Harvard Business Review article from March 2022.
Key points include:
Advantages to fewer meetings:
Authors recommend holding meetings only when “absolutely” necessary. That typically includes:
Do Sepsis Alert Systems Work?
Researchers in Korea completed a high quality systematic review and meta-analysis of sepsis alert systems for adult ED patients
Using high quality methods, they identified over 3000 studies with 22 meeting criteria.
They found these systems were associated with:
Electronic alerts were further associated with:
Summary (+ a little editorialization)
As annoying as we may find these systems in our daily practice, there is growing evidence that they do provide some benefit with impacts on task saturation and decreasing cognitive load in addition to real patient benefit. While there is also recent evidence that physician gestalt performs well against these systems, there is a suggested benefit in their inclusion in clinical decision making as a safety net or as an “assist”.
The incorporation of rule-based algorithms like these in more advance machine learning methods are covered quite well in a recent opinion piece on “The AI Future of Emergency Medicine”. However, it is important to always know the source of any “algorithm” that you are using, whether rule or mathematically based, given real concerns for bias and error.
Iron-deficiency anemia affects 10% of women of child-bearing age. Guidelines to treat iron deficiency recommend daily oral iron, but this may decrease fractional iron absorption and increase side effects which also impacts medication adherence. A double-masked, randomized, placebo-controlled trial, which included 150 women demonstrated that:
at equal total iron doses, compared to consecutive day dosing of iron, alternate day dosing did not result in higher serum ferritin but reduced iron deficiency at 6 months and triggered fewer gastrointestinal side effects.
Take home point: Dosing iron every other day had similar effect with less side effects. Consider prescribing it this way to your patients, especially if they have had issues with side effects in the past!
According to this study, no TXA 2g bolus was not found to increase the number of seizures in TBI pts.
TXA has been shown to improve mortality in inter cranial hemorrhage trauma patients if given within 2 hours. TXA is also known to lower seizure threshold. This study was a secondary analysis of a larger study comparing placebo to 1 g TXA bolus plus 8 hour infusion or 2g bolus TXA in the prehospital setting. There was no difference in the number of pts experiencing seizure or outcome in those receiving the 2g bolus of TXA.
