UMEM Educational Pearls - By Jenny Guyther

Title: What is the ideal observation time for a patient with croup who has received racemic epinephrine?

Category: Pediatrics

Keywords: Croup, epinephrine, discharge, observation (PubMed Search)

Posted: 12/15/2017 by Jenny Guyther, MD (Updated: 11/22/2024)
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The peak age for croup is 6 months to 3 years.  The cornerstone of treatment is corticosteroids, traditionally dexamethasone.  With oral administration, the peak onset is 1-2 hours. Steroids shorten the duration of symptoms, reduce the need for nebulized epinephrine and decrease the need for intubation.

Racemic epinephrine has been used for moderate to severe croup and can show an improvement in patient symptoms for up to 120 minutes.  There is little evidence to suggest how long to observe the patient for recurrence of symptoms after racemic epinephrine was given.  Previous studies have suggested both 2 and 4 hour observation.

299 patients were included in this study.  136 patients were observed for 3.1 to 4 hours.  In the 3.1 to 4 hour group, 21 (7%) failed treatment, 19 of those patients required admission and 2 returned within 24 hours.  No patients who were discharged home after 4 hours returned to the emergency department within 24 hours.

Bottom Line: Consider a 4 hour period of observation after giving racemic epinephrine in order to decrease bounce backs.

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Title: Pediatric marijuana ingestion

Category: Pediatrics

Keywords: Marijuana, symptoms, overdose (PubMed Search)

Posted: 11/17/2017 by Jenny Guyther, MD (Updated: 11/22/2024)
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In the US, there are an estimated 22.2 million users of cannabis based on the 2015 National Survey on Drug Use and Health.  The incidence of unintentional cannabis ingestion has increased in states that have legalized medical and recreational marijuana.  The cited article reviewed of 44 articles involving unintentional cannabis ingestion in children younger than 12 years.

The majority of intoxications were through cannabis resins followed by cookies and joints.

Lethargy was the most common presenting sign followed by ataxia.  Tachycardia, mydriasis and hypotonia were also noted.  Rarer but more serious presentations included respiratory depression and seizures.

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Within the first hour after administration, ondosterone, metoclopramide and bromopride were equally efficacious.  At the 6 hour and 24 hour period after receiving the initial dose of medication, ondansetron was statistically superior to bromopride (not available in the US) and metoclopramide.  There were no reported side effects in the ondansetron group (including diarrhea or sedation).

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Elective surgeries with general anesthesia are often cancelled when the child has an upper respiratory tract infection.  What are the adverse events when procedural sedation is used when the child has an upper respiratory tract infection?

Recent and current URIs were associated with an increased frequency of airway adverse events (AAE).  The frequency of AAEs increased from recent URIs, to current URIs with thin secretions to current URIs with thick secretions.   Adverse events not related to the airway were less likely to have a statistically significant difference between the URI and non-URI groups

AAEs for children with no URI was 6.3%.  Children with URI with thick/green secretions had AAEs in 22.2% of cases.  Children with URIs did NOT have a significant increase in the risk of apnea or need for emergent airway intervention.  The rates of AAEs, however, still remains low regardless of URI status.

 

 

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Title: Bacterial Meningitis in Pediatric Complex Febrile Seizures

Category: Pediatrics

Keywords: Febrile seizure, meningitis (PubMed Search)

Posted: 8/18/2017 by Jenny Guyther, MD (Updated: 11/22/2024)
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Febrile seizures occur in children 6 months through 5 year olds.  A complex febrile seizure occurs when the seizure is focal, prolonged (> 15 min), or occurs more than once in 24 hours.

The prevalence of bacterial meningitis in children with fever and seizure after the H flu and Strep pneumomoniae vaccine was introduced is 0.6% to 0.8%.  The prevalence of bacterial meningitis is 5x higher after a complex than simple seizure.

From the study referenced, those children with complex febrile seizures who had meningitis all had clinical exam findings suggestive of meningitis.  More studies are needed to provide definitive guidelines about when lumbar punctures are needed in these patients.

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Title: Reducing radiation exposure in evaluation of ventricular shunt malfunctions in children

Category: Pediatrics

Keywords: CT scans, radiation exposure, pediatrics (PubMed Search)

Posted: 7/21/2017 by Jenny Guyther, MD (Updated: 11/22/2024)
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Ventricular shunt (VP) malfunction can be severe and life-threatening and evaluation has typically included a dry CT brain and a shunt series which includes multiple x-rays of the skull, neck, chest and abdomen.  The goal of this study was to decrease the amount of radiation used in the evaluation of these patients since these patients will likely present many times over their lifetime.  Several institutions have more towards a rapid cranial MRI, however, this modality may not be readily available.

This multidisciplinary team decreased the CT scan radiation dose from 250mA (the reference mA in the pediatric protocol at this institution) to 150 mA which allows for a balance between reducing radiation exposure and adequate visualization of the ventricular system.  They also added single view chest and abdominal x-rays.

The authors found that after implementing this new protocol, there was a reduction in CT radiation doses and number of x-rays ordered with no change in the return rate.

 

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Title: Pediatric blunt trauma and the need for chest xray

Category: Pediatrics

Keywords: Blunt thoracic trauma, pediatric trauma, chest xray (PubMed Search)

Posted: 6/16/2017 by Jenny Guyther, MD
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Chest injuries represent the second most common cause of pediatric trauma related death.  ATLS guidelines recommend CXR in all blunt trauma patients.  Previous studies have suggested a low risk of occult intrathoracic trauma; however, these studies included many children who were sent home.

Predictors of thoracic injury include: abdominal signs or symptoms (OR 7.7), thoracic signs of symptoms (OR 6), abnormal chest auscultation (OR 3.5), oxygen saturation < 95% (OR 3.1), BP < 5% for age (OR 3.7), and femur fracture (OR 2.5).

4.3 % of those found to have thoracic injuries did not have any of the above predictors, but their injuries were diagnosed on CXR.  These children did not require trauma related interventions.

Bottom line: There were still a number of children without these predictors that had thoracic injuries, so the authors suggest that chest xray should remain a part of pediatric trauma resuscitation.

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IM ziprasidone (Geodon) has a relatively quick onset of action with a half-life of 2-5 hours.  Although commonly used in adults, there has not been a study looking at an effective dose in pediatrics. Based on the study referenced, the suggested pediatric dose of ziprasidone is 0.2 mg/kg (max 20mg).

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Predictive factors of asthma development in patients diagnosed with bronchiolitis include:

- Male sex (OR 1.3)

- Family history of asthma (OR 1.6)

- Age greater than 5 months at the time of bronchiolitis diagnosis (OR 1.4)

- More than 2 episodes of bronchiolitis (OR 2.4)

- Allergies (OR 1.6)

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Title: Does urine concentration effect the diagnosis of urinary tract infection?

Category: Pediatrics

Keywords: Pediatrics, urinary tract infection, urine concentration (PubMed Search)

Posted: 4/14/2017 by Jenny Guyther, MD (Updated: 11/22/2024)
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A recent study suggests that using a lower cut off value of white blood cells in dilute urine, may have a higher likelihood of detecting a urinary tract infection in children.

In dilute urine (specific gravity < 1.015), the optimal white blood cell cut off point was 3 WBC/hpf (Positive LR 9.9).  With higher specific gravities, the optimal cut off was 6 WBC/hpf (Positive LR 10).  Positive leukocyte esterase has a high likelihood ratio regardless of the urine concentration. 

 

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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



Title: Can you glue a pediatric nail bed laceration?

Category: Pediatrics

Keywords: Nail bed injuries, wound closure (PubMed Search)

Posted: 1/20/2017 by Jenny Guyther, MD (Updated: 11/22/2024)
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More studies are needed, but the existing data shows that medical adhesives may be quicker without impacting cosmetic and functional outcome.

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Title: Do older infants with fever and diarrhea need a UA and culture?

Category: Pediatrics

Keywords: fever, diarrhea, urinary tract infection (PubMed Search)

Posted: 12/16/2016 by Jenny Guyther, MD (Updated: 11/22/2024)
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After 4 months old, the answer MAY be no.

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Title: What is the optimal dosing for IV ketamine for moderate sedation in children?

Category: Pediatrics

Keywords: Ketamine, conscience sedation, pharmacology, pediatrics (PubMed Search)

Posted: 11/18/2016 by Jenny Guyther, MD
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Using 1.5 mg/kg or 2 mg/kg of IV ketamine led to less redosing compared to using 1 mg/kg IV.

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Title: Plasma-Lyte A versus 0.9% NaCl for rehydration in the pediatric patient

Category: Pediatrics

Keywords: Fluid resuscitation, gastroenteritis, dehydration (PubMed Search)

Posted: 10/21/2016 by Jenny Guyther, MD
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Plasma-Lyte A outperformed 0.9% NaCl for rehydration in children with acute gastroenteritis showing a more rapid improvement in serum bicarbonate levels and dehydration scores.

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114 children with bronchiolitis had end tidal carbon dioxide (ETCO2) measured on presentation to the ED. The ETCO2 levels did not differ significantly between admitted and discharged patients. In the subset of admitted patients, there was no correlation with ETCO2 on admission and days of oxygen requirement or length of stay.

Bottom line: Initial ETCO2 does not predict outcome for patients with bronchiolitis.

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From 2010-2014 ED visits in the US for injuries from trampoline parks (TPI) increased from 581 visits per year to 6932 visits per year. There was no change in the number of injuries related to home trampoline use. TPI were more likely to involve the lower extremity, be a dislocation and warrant admission and less likely to involve the head.

Bottom line: TPIs are increasing and have a different injury pattern compared to home trampolines.

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Although it is summer, preparations are being made for the 2016-2017 influenza season. The Center for Disease Control (CDC) no longer recommends the live attenuated influenza vaccine (LAIV4). The American Academy of Pediatrics has supported this statement.

The LAIV4 (the only intranasal vaccine available) was offered to patients over the age of 2 years without respiratory problems. Observational studies during the 2013-2015 seasons have shown that the LAIV4 has an adjusted vaccine efficacy of 3% compared to 63% for the inactivated vaccine (intramuscular). Children who received the intranasal vaccine were almost 4 times more likely to get the flu compared to children who received the injection.

Bottom line: Only the intramuscular shot is recommended for this upcoming season. This is causing many primary care practices to scramble to obtain enough vaccine.

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Title: Hypertensive crisis in children

Category: Pediatrics

Keywords: hypertension, pediatrics (PubMed Search)

Posted: 6/17/2016 by Jenny Guyther, MD
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Hypertension is defined as a systolic or diastolic blood pressure > 95% for age, sex and height based on repeated measurements. There is no numeric blood pressure cut of for defining hypertensive emergency in pediatrics. Use a reference book such as Harriet Lane Handbook to determine percentiles. The proper size BP cuff should be used: bladder width that is at least 40% of the arm circumference at the midpoint of the upper arm and a length that is 80-100% of the arm circumference.
Hypertensive crisis in children younger than 6 years may present with: irritability, feeding disturbance, vomiting, failure to thrive, seizure, altered mental status, or congestive heart failure.
Treatment in the Emergency Setting
-Lower the BP to < 95 percentile in children with HTN and no signs of end organ dysfunction
-Lower the BP to < 90 percentile in children with end organ dysfunction or co-morbid conditions
-Start with IV if able
-Few anti hypertensive medications have been studied adequately in children.
-The cited article has a table of antihypertensive medications with doses to be used in children, but only 4 have FDA approved labeling for pediatrics (hydralazine, fenoldopam, sodium nitroprusside and minoxidil)

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Title: BRUE Restructuring the way we think of ALTE

Category: Pediatrics

Keywords: Apparent life threatening event, ALTE, apnea, low risk infants, brief unexplained resolved events (PubMed Search)

Posted: 5/20/2016 by Jenny Guyther, MD
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The American Academy of Pediatrics has developed a new set of clinical practice guidelines to help better manage and think about patients who have experienced an ALTE (Apparent Life Threatening Event). The term BRUE (Brief Resolved Unexplained Event) will replace ALTE.

BRUE is defined as an event in a child younger than 1 year where the observer reports a sudden, brief and now resolved episode of one or more of: cyanosis or pallor; absent, decreased or irregular breathing, marked change in tone or altered level of responsiveness. A BRUE can be diagnosed after a history and physical exam that reveal no explanation.

BRUE can be classified as low risk or high risk. Those that can be categorized as low risk do not require the extensive inpatient evaluation that has often occurred with ALTE.

LOW risk BRUE:

Age > 60 days

Gestational age at least 32 weeks and postconceptual age of at least 45 weeks

First BRUE

Duration < 1 minute

No CPR required by a trained medical provider

No concerning historical features (outlined in the article)

No concerning physical exam findings (outlined in the article)

Recommendations for low risk BRUE:

-SHOULD: Educate, shared decision making, ensure follow up and offer resources for CPR training

-May: Obtain pertussis and 12 lead; briefly monitor patients with continuous pulse oximetry and serial observations

-SHOULD NOT: Obtain WBC, blood culture, CSF studies, BMP, ammonia, blood gas, amino acids, acylcarnitine, CXR, echocardiogram, EEG, initiate home cardiorespiratory monitoring, prescribe acid suppression or anti-epileptic drugs

-NEED NOT: obtain viral respiratory tests, urinalysis, glucose, serum bicarbonate, hemoglobin or neuroimaging, admit to the hospital solely for cardiorespiratory monitoring

*When looking at the evidence strength behind these recommendations, the only one that had a strong level was that you should not obtain WBC, blood culture or CSF

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