Author: Peter Bakes, M.D.
- Epidural hematomas have a characteristic convex appearance on CT while a subdural hematoma will have a concave appearance.
- Indications for operative intervention for subdural hematoma may include: >5 mm midline shift, over 10 mm in thickness, comatose with ICP >20, or patient neurologic deterioration.
Bullock, M. R. et. al. . Surgical management of acute subdural hematomas. 2006. Neurosurgery, 58(SUPPL. 3). DOI: 10.1227/01.NEU.0000210364.29290.C9.
Huang KT, Bi WL, Abd-El-Barr M, Yan SC, Tafel IJ, Dunn IF, Gormley WB. The Neurocritical and Neurosurgical Care of Subdural Hematomas. Neurocrit Care. 2016. 24(2):294-307. doi: 10.1007/s12028-015-0194-x.
Author: Michael Hunt, MD
- Studies have shown that patients with decreasing GCS scores have worse outcomes, however GCS of 4 has worse outcome than GCS 3.
- Alternative scoring system is the GCS-P score which is GCS score – number of non-reactive pupils.
- GCS3 50% mortality 70% poor outcome at 6 months; GCS-P of 1 had mortality 74% and poor outcome at about 90% at 6 months.
- GCS-P score is a better prognostic indicator than GCS score.
Han J, et al (2014). External validation of the CRASH and IMPACT prognostic models in severe traumatic brain injury. Journal of Neurotrauma. 31(13):1146-52.
Maas AI, et al. (2007). Prognosis and clinical trial design in traumatic brain injury: the IMPACT study. Journal of Neurotrauma. 24(2):232-8.
The CRASH trial management group, & the CRASH trial collaborators. (2001). The CRASH trial protocol (Corticosteroid randomisation after significant head injury) [ISRCTN74459797]. BMC Emergency Medicine, 1, 1. http://doi.org/10.1186/1471-227X-1-1.
Check out this episode!
Author: Dylan Luyten , MD
- Rare autosomal dominant condition that is often misdiagnosed as a psychiatric illness.
- Presents as profound muscle weakness with frank paralysis that is often precipitated by vigorous exercise, high carb diet, high sodium load, or by high temperatures.
- Supplemental potassium can rapidly reverse symptoms.
- Important to rule out thyrotoxicosis (get a TSH!).
- Prevention is key: adhering to a low carb and low sodium diet with supplemental potassium can help prevent episodes.
Vicart S, Sternberg D, Arzel-Hézode M, et al. Hypokalemic Periodic Paralysis. 2002 Apr 30 [Updated 2014 Jul 31]. In: Adam MP, Ardinger HH, Pagon RA, et al., editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2018. Available from: https://www.ncbi.nlm.nih.gov/books/NBK1338/?report=classic
Statland JM, Fontaine B, Hanna MG, et al. Review of the Diagnosis and Treatment of Periodic Paralysis. Muscle & Nerve. 2018;57(4):522-530. doi:10.1002/mus.26009.
Author: Jared Scott, M.D.
- Recent study compared Compazine with Benadryl vs. Dilaudid for acute migraine management in the ED.
- Compazine + Benadryl demonstrated migraine relief in 60% of patients compared to the 31% of patients who were relieved with Dilaudid.
- Compazine + Benadryl is a superior migraine treatment than Dilaudid.
Friedman BW, et. al. (2017). Randomized study of IV prochlorperazine plus diphenhydramine vs IV hydromorphone for migraine. Neurology. 89(20):2075-2082
Author: Sam Killian, M.D.
- Spinal cord injury without radiographic abnormality (SCIWORA) is a diagnosis defined as traumatic injury to spine with clinical sx of traumatic myelopathy (paraplegia, paresthesias, FND) without radiographic abnormalities.
- Term was established in 1970’s before MRI and accounted for about 15% of injuries at the time (mainly children). Today SCIWORA accounts for about 10% of spinal injuries.
- Belief is that injury causes subtle movement of the spinal cord from its natural position with resultant contusion or ischemia with subsequent deficits.
- Treatment involves prolonged immobilization (up to 12 weeks).
Walecki, J. (2014). Spinal Cord Injury Without Radiographic Abnormality (SCIWORA) ? Clinical and Radiological Aspects. Polish Journal of Radiology,79, 461-464. doi:10.12659/pjr.890944
Author: Aaron Lessen, M.D.
- Recurrence rate for first time unprovoked seizures – 5% after 48 hours, 14% at 2 weeks , 30% after 4 months.
- Higher risk for recurrence: age under 3; patients with multiple seizures at initial presentation, focal neurologic findings on initial presentation.
- Useful for counseling patients and recommending follow up.
Shinnar S, Berg AT, Moshé SL, et al. Risk of seizure recurrence following a first unprovoked seizure in childhood: a prospective study. Pediatrics 1990; 85:1076.
Author: Dylan Luyten, MD
- Johannes Hoffer coined term Nostalgia in 1688 in his medical dissertation.
- Nostalgia was a formal medical diagnosis, and one that dates back to 17th century when soldiers had longing for home and melancholy with a constellation of symptoms including lethargy, sadness, disturbed sleep, heart palpitations, GI complaints, and/or skin findings for which the only cure was to return home.
- In the civil war, over 5000 soldiers were given medical leave for nostalgia.
- Always remember to view your patient in the appropriate context (psychosocial, cultural, historical, etc.)
Beck, J. (2013, August 14). When Nostalgia Was a Disease. Retrieved March 08, 2018, from https://www.theatlantic.com/health/archive/2013/08/when-nostalgia-was-a-disease/278648/
Author: Sam Killian, M.D.
- The availability of antiepileptic treatment has changed in the last 30 years.
- A recent study in JAMA followed 18,000 pts with epilepsy for 30 years to assess the effectiveness of looked at seizure control.
- The study found that although there have been new drugs introduced over the last 30 years, there has not been much of an improvement in seizure control.
- Side effect profiles and medicine compliance may have improved in this time period, but the main goal of reducing seizure frequency has not been reached.
References: Chen Z, Brodie MJ, Liew D, Kwan P. Treatment Outcomes in Patients with Newly Diagnosed Epilepsy Treated With Established and New Antiepileptic DrugsA 30-Year Longitudinal Cohort Study. JAMA Neurol. Published online December 26, 2017. doi:10.1001/jamaneurol.2017.3949
Author: Sam Killian, M.D.
- Transient global amnesia is a paroxysmal, transient memory issue. Remote and immediate memory is preserved, but new memories cannot be made.
- Patients will have a normal neurological exam and usually no other complaints.
- The episode will last less than 24 hours, but they usually resolve after 1-2 hours.
- This is relatively common. It happens in 5/100000 people, mostly men over 50. Recurrence is rare.
- There is no known cause, but it is associated with migraines and classically occurs after heavy physical exertion or emotional stress.
- Workup includes a full neuro exam, imaging for ongoing symptoms, and labs to rule out other causes.
- Patients can be sent home with reassurance after symptoms resolve. Instruct them to follow up with neurology. Patients with continuing symptoms should be admitted.
References: Owen D, Paranandi B, Sivakumar R, Seevaratnam M. Classical diseases revisited: transient global amnesia. Postgraduate Medical Journal. 2007;83(978):236-239. doi:10.1136/pgmj.2006.052472.