Emergencies Flashcards
Head injury epidemiology
Older than 12 due to recreation and MVAs. less than 1 yo due to falls or abuse.
Basal Skull
sphenoid, temporal, occipital, ethmoid bones.
Head injury Concerning signs
Excessive sleepiness (is it nap time), decreased arousability, vomiting, irritability.
Cushing’s Triad
Wide pulse pressure, bradycardia, abnormal respirations
Basilar skull fracture signs
Battle signs, periorbital ecchymosis, hemotympanum, ottorhea/rhinorrhea or CSF.
CT indications
GCS less than 14, signs of AMS, palpable skull fracture, or signs of basilar skull fracture.
Observation vs. CT considerations
Based on physician experience, multiple v. isolated findings, worsening symptoms, age less that 3 months, parental preference.
Observation Vs. CT Indications
Occipital/parietal/temporal hematoma, LOC, Severe MOA, Not acting normal per parents, vomiting, severe headache.
Subdural Hematoma Definition
Bleed between the dura and the arachnoid mater. Low pressure bleed along the periphery as the arachnoid disects from the dura and bridging veins are torn.
Subdural Hematoma Presentation
LOC with lingering symptoms, irritability, lethargy, bulging fontanelles, vomiting.
Subdural Hematoma CT findings
Crescent-shaped bleed that crosses suture lines usually in the parietal area.
Subdural Hematoma Prognosis
Very poor.
Epidural Hematoma Definition
Rupture of arteries +/- fracture. Usually cause by a blow to the side of the head that ruptures the middle meningeal artery.
Epidural Hematoma Presentation
Brief LOC followed by a lucid period then rapid deterioration.
Epidural Hematoma CT findings
Elliptical shaped bleed that doesn’t cross suture lines.
Epidural Hematoma Prognosis
Better than subdural
Subarchnoid Hemorrhage Definition
Injury to the parenchymal and subarachnoid vessels.
Subarchnoid Hemorrhage Presentation
Normal to LOC
Subarchnoid Hemorrhage Diagnosis
CT: small dense slivers with blood in the cisterns, sulci and fissures (may take time to become visible). LP will reveal blood in the CSF.
No ICH or skull fracture Treatment
Head injury precautions, responsible caregiver that is capable of monitoring for any changes. Sleep is ok.
ICH +/- skull fracture Treatment
Immediate Neuro consult. Admit to PICU. surgery v. observation.
Mild TBI (concussion) Definition
Traumatically induced alteration in mental status with or without LOC. Direct blunt force causes shearing/stretching of the axons.
Mild TBI (concussion) Presentation
Amnesia, confusion, distractability, delayed responses, visual changes, repetitive speech. If any substance use must CT scan.
Mild TBI (concussion) Prognosis
Most symptoms will resolve in 7-10 days. Any severe/prolonged/worsening symptoms are emergent.
Post concussive syndrome
Symptoms that last up to 3 months
Second Impact Syndrome
A second concussion within weeks can cause brain swelling and herniation.
Mild TBI (concussion) Treatmetn
Physical and cognitive rest. NO same day return to play. Must be completely symptom free and cleared by a neurologist to return.
Compund Fracture Treatment
Splin/dress, IV antibiotics, emergent ortho consult.
Non-displaced open fracture
PO antibiotics, repair laceration, splint. Ortho referal.
Osteomyelitis Definition
Hematogenous spread of infection to the bone often leading to bone destruction. Usually in males less than 5 yo. In the long bones (femur, humerus).
Osteomyelitis Etiology
S. aureus (most common), S. pneumoniae, S. pyogenes.
Osteomyelitis Presentation
Fever, bone pain, swelling, redness, guarding, focal tenderness.
Osteomyelitis Xray
Soft tissue swelling early on and later in the disease evidence of lytic lesions (10-14 days).
Osteomyelitis MRI
Best choice. Will show marrow edema, absecesses.
Osteomyelitis Labs
Leukocytosis with an elevated ESR and CRP
Osteomyelitis Treatment
IV antibiotics (empiric), surgical drainage, debridement, hyperbaric O2 therapy.
Septic Joint etiology
Infants/Kids: S. aureus or strep.
Adolescents: N. gonnorrhea
Deadly in a dose
Aspirin, Beta-blockers, CCBs, Camphor, chloroquine, clonidine, iron, lindane, methyl salicylate, methadone, nicotine, oils (hydrocarbons), theophylline, TCAs.