Headaches in the ED Lecture Powerpoint Flashcards
High risk history for serious headache etiology when evaluating in the ED (5)
- sudden onset
- no history of similar headaches
- infection
- altered mental status/seizure
- age 50 or older
Red flags of headache (7)
- fixed neurological deficits
- extremely abrupt onset
- papilledema
- new onset in patients <5 or >50
- signs of infection
- altered level of consciousness
- new headache in cancer or immunocompromised patient
Primary vs secondary headaches
Primary is caused by benign intrinsic causes (migraine, tension, cluster) vs secondary caused by underlying causes (lesion, infection, etc)
Kernigs sign
Test for meningitis by seeing severe stiffness in hamstrings causing inability to straighten leg when hip is flexed to 90 degrees
Brudzinski’s sign
Test for meningitis that if positive sees patients hips and knees flex when the neck is flexed manually by the provider
2 most helpful studies in identifying intracranial lesion or bleed
- Neuroimaging CT without contrast
- MRI
Most helpful study in identifying CNS infection
Lumbar puncture (perform a CT prior to exclude any intracranial mass or bleed that could cause pressure issue and herniation of brain)
Rule of RBCs in the CSF tubes for determining a brain bleed while performing a lumbar puncture
Should normally see the number of RBCs decrease over time when drawing tubes from an LP, if consistent amount then can indicate a brain bleed presence
Decreased glucose in CSF analysis following LP is predictive of…
…infectious meningitis
Classic triad of meningitis
- fever
- nuchal rigidity (inability to flex due to rigidity of neck muscles, if flexion is painful but full range of motion present then nuchal rigidity is absent)
- altered mental status
2 types of meningitis
- Bacterial (deadly, N meningitis, pneumococcus, listeria)
- Viral (aseptic, nondeadly)
Subarachnoid bleed characteristics and diagnostic studies (3) and treatment options (4)
Most are aneurysmal with sudden onset severe thunderclap headache that may be associated with brief loss of consciousness or seizures
- noncontrast CT and if nondiagnostic then lumbar puncture with elevated RBC that does not diminish in tubes 1-4, digital subtraction angiography highest resolution to detect suspected aneurysm is gold standard diagnosis
- IV fluids, antiepileptic therapy, ET tube, potential neurovascular surgery
Subdural bleed characteristics, diagnostic study (1), prognosis (1), and treatment (1)
- bleed in potential space between dura and arachnoid membranes, most are from tearing bridging veins that drain from the surface of brain to the dural sinuses, head trauma most often cause***
- CT of head most widely used diagnostic tool
- overall mortality is up to 50%
- neurosurgery immediately
Migraine cocktail components for migraine in emergency setting that has failed to respond to normal treatment (4)
- Antiemetic such as metaclopraide
- diphenhydramine
- Ketorlac (toradol)
- IV fluids
What drug classes (2) should NOT be given to treat migraine?
Opioids or barbituates