Emergency Medicine Flashcards
What lab value is almost always seen with pediatric patients who have osteomyelitis
elevated ESR and CRP
Osteomyelitis
- two most common sx
fever
joint pain
PID
- outpatient treatment
- ceftriaxone 250 mg IM
- doxy 100 mg PO BID x 14d
PID
- inpatient treatment
- Cefotetan 2 gm q 12 hours
- doxy 100 mg PO/IV 1 12 hours
Spontaneous Pneumo
- tx if stable
100% oxygen, observation, repeat xray in 6 hours
Cholangitis
- charcot triad
- Reynolds pentad
- fever, abd pain, jaundice
- above + confusion and hypotension
Cauda Equina
- Most sensitive sx
- urinary retention
Lithium Toxicity
- acute
- n/v
- urinary concentrating defects
- Neuro sx: weakness, twitching, drowsy, confusion, etc.
- prolonged QT, ST/T wave changes
- hypothyroid
- leukocytosis
Lithium toxicity
- chronic
- nephrogenic diabetes insipidus, interstitial nephritis, renal failure
- Neuro sx: weakness, twitching, drowsy, confusion, etc.
- myocarditis
- aplastic anemia
- dermatitis, ulcers, edema
Common cause of nephrogenic diabetes insipidus
- lithium
Acute mesenteric ischemia
- MC artery
super mesenteric artery
Acute mesenteric ischemia
- RF
- dysrhythmia (afib)
- recent MI
- CAD
Acute mesenteric ischemia
- lab findings
lactic acidosis
Acute mesenteric ischemia
- Dx
- CTA
- angiography (gold standard)
Ranson’s Criteria
Age >55 WBC > 16k Glucose >200 LDH > 250 AST > 250
Postdural HA
- Clinical
- bilateral
- 48 hours after procedure
- worse sitting/standing
- resolve days to weeks
Postdural HA
- Prevention
- small caliber needle (higher gauge)
- blunt needle
- stylet replacement before needle removal
- direction of bevel parallel to dural fibers (parallel to spine)
Postdural HA
- management
- hydration, NSAIDs
- caffeine
- epidural blood patch
DVT
- criteria to determine testing
Wells Criteria
DVT
- test of choice if low to moderate pretest probability
D-dimer
- can rule out DVT if negative
DVT
- low/mod risk with a positive d-dimer or high risk: test of choice
ultrasound
define grouped beats in second degree heart block type I
group of beats together and then dropped QRS
Acute angle closure glaucoma
- treatment
- timolol topical
- apraclonidine topical
- pilocarpine topical
- acetazolamide (systemic)
- mannitol (systemic)
Normal intraocular pressure
- 8-21
MC injury in children with blunt chest trauma
pulmonary contusion
- chest wall much more elastic than adults, less likely to have external signs including rib fractures
AAA
- signs
- can be similar to renal colic
- syncope
- combo of back and abdominal pain
COPD exacerbation
- MC bugs
- Streptococcus pneumoniae
- Haemophilus influenzae
- Moraxella catarrhalis
COPD exacerbation
- s/sx
- tachypneic
- tachycardic
- AMS (dt CO2 retention)
COPD exacerbation
- management
- beta-adrenergic agonist (albuterol)
- Anticholinergic agents (ipatroprium)
- oral steroids (prednisone)
- Noninvastive positive pressure ventilation
- Abx
Spinal epidural abscess
- RF
- IV drug users
- alcoholics
- immunocompromised including DM
Spinal epidural abscess
- presentation
- lower back pain
- pain to palpation of spinal processes
- elevated ESR and CRP
- fever 50%
- focal neurologic deficits 50%
Spinal epidural abscess
- imaging
MRI
Spinal epidural abscess
- management
- neurosurgical consult for drainage and decompression
- broad spectrum abx
Giardia
- treatment
- metronidazole
- tinidazole
- albendazole/mebendazole
- nitazoxanide
PCP
- describe
- eye movements
- clinical
- dissociative anesthetic similar to ketamine
- glutamate receptor (NMDA) antagonist
- rotary nystagmus
- behavior issues, anger, aggression, irritability, impaired judgement
- HTN, tachycardia
Acute hypertensive heart failure
- initial management
nitroglycercine : pre and after load reduction
Knee effusions
- which bursa communicates with teh joint cavity
Suprapatellar bursa
Signs epistaxis is posterior not anterior
- older patient
- bleeding from both nares
- bleeding in posterior pharynx
Posterior epistaxis complications
- aspiration
- hypoxia
- hypercarbia
- symptomatic bradycardia
What neuro complication are people with polycystic kidney disease at greater risk for?
berry aneurysms - SAH
SAH
- risk factors
- Marfan
- Polycystic kidney disease
- Coarctation of the aorta
- Fibromuscular dysplasia
Which traumatic event has the highest probability of resulting in post-traumatic stress disorder
rape
Vertigo
- signs is peripheral cause
- rapid onset
- increased intensity with head movement
- intense spining
- change in sensation of hearing
- horizontal or rotary nystagmus
- normal neuro exam
Vertigo
- signs is central cause
- insidious onset
- quality is ill-defined
- head position does not affect
- nystagmus can change direction
- positive neuro findings
Nerve affected by falling asleep drunk at night on arm
radial nerve
(hand drop)
- numb over first dorsal interosseous muscles
SVT
- sx
- abrupt onset tachycardia (120-200 bpm)
- narrow complex on EKG
SVT
- management
- vagal maneuvers
- adenosine 6 mg
- adenosine 12 mg
- cardioversion (if unstable)
TTP
- pentad
- fever
- anemia (microangiopathic, hemolytic)
- thrombocytopenia
- renal failure
- neurologic findings
TTP
- management
plasmapheresis
One major differentiator between encephalitis and meningitis
presence of a distinct neurologic abnormality:
- new psychiatric symptoms
- cognitive deficits (aphasia, amnesia, acute confusional state)
- seizures
- movement disorders
Tension pneumothorax
- needle decompression locatoin
- second intercostal space (above the rib)
- midclavicular line
- large bore needle (14 gauge or greater)
Endocarditis
- what type of pneumonia can tricuspid valve infections lead to
- multifocal pneumonia
- vegetations on the right side of the heart and embolize to the lungs
Croup
- MC bug
parainfluenza virus
Croup
- treatment
- antipyretics
- hydration
- nebulizer racemic epi
- steroids
Aortic aneurysm
- sizes and assoc mgmt
> 5.5 or >0.5 cm expansion in 6 months: immediate surgical repair
4.5 cm: vascular surgeon referral
4-4.5 cm: monitor US Q6 months
3-4 cm: monitor US Q 1 year
What common medication can worsen the effects of heart failure?
NSAIDS
Low back pain
- indications for imaging
- <18 or >50
- night pain/weight loss
- fever, chills, sweats
- acute bony tenderness
- Morning stiffness >30 min in young adult
- urinary/bowel retention, saddle anesthesia
- recent spinal instrumentation
- immunodeficiency
- coagulopathy
- sx lasting >4-6 weeks
Croup
- MCC
parainfluenza virus
SAH
- medication to decrease vasospasm
nimodipine
What level does spinal cord terminate in adults
L1-L2
What is the most common cardiology finding in patients who have WPW (aside from WPW arrhythmia)
atrial fibrillation - seen in 25% with WPW
- will have a very rapid rate with wide-complex tachycardia
Which antiarrythmic medication is CI in setting of coronary artery disease or structural heart disease?
Flecainide
- increased risk of polymorphic v-tach
Tricuspid regurgitation
- causes
- MC: elevated R heart pressure (COPD, pulmonary fibrosis, volume overload)
- endocarditis: usu IVDU
Endocarditis
- MC bug IVDU
- MC native valve
- MC bug men with GI/Gu procedure
- staph aureus
- strep viridans (esp person with dental disease)
- enterococci
CHA2DS2-VASc
- use
- score
estimate risk of stroke - CHF - HTN - Age >75 (+2 points) - DM - Stroke hx (+2 points) - Vascular disease - Age 65-74 - Sex female 0 points: low risk 1 point: low-mod risk, consider anticoag 2+ points: anticoagulation candidate
Rheumatic heart disease
- most common heart murmur
mitral stenosis (diastolic low-pitched decrescendo at cardiac apex) - best heart with bell in left lateral decubitus
Pericardial knock
- what heart condition
constrictive pericarditis
Two types of beat associated with ventricular tachycardia
- fusion beats: when impulses from two locations activate the ventricle
- capture beats: sinus beat is normally conducted and a single beat with sinus QRS occurs with wide complex tachycardia
V-tach
- define
- > 3 consecutive ectopic ventricular beats
- monomorphic, polymorphic
- wide complex
V-tach treatment - pulseless - unstable - stable
- immediate defibrillation
- synchronized cardioversion
- procainamide, amiodarone, cardioversion if refractory
Hypertensive emergency
- define
- severe elevation bp
- evidence of end-organ damage
Hypertensive emergency
- treatment
- reduce MAP 10-20% first hour, graduate reduction during next 23 hours
- goal: reduction 25% compared to baseline within 24 hours
- IV labetalol
- esmolol, nicardipine, hydralazine, nitroglycerine
BP Goals
>= 60 yo
< 60
>18 with CKD or DM
<150/90
<140/90
<140/90
What four drugs have shown decreased in mortality for pt with MI
ASA
BB
Statin
ACEi
Back pain red flags
- RF for what
- fracture
- malignancy
- infection
- cauda equina
- -> get XR
Back pain red flags
- list
- night pain, weight loss (tumor)
- fever, chills, sweats (bone/disk infection)
- acute bony tenderness (fx)
- morning stiff >30 min in young adults
- urinary/bowel retention, saddle anesthesia (caudal equina)
- recent spinal instrumentation (abscess or hematoma)
- immunodeficiency (bone/disk infection)
- extremes of age
- coagulopathy (spinal epidural hematoma)
Ankle fracture mgmt
- stable
- unstable, non displaced
- unstable, displaced
- 4-6 weeks weight bearing cast/brace
- non-weight bearing cast
- open/closed reduction
Spinal stenosis
- dx
- mgmt
- MRI
- PT and surgery
MC fracture carpal bone
scaphoid
DTR
List
C5/6 Biceps C6 Brachioradialis C7 Triceps L4 Patellar S1 Achilles
Name for test for hip dysplasia: lay on back and flex knees to compare femur length
Galeazzi test
Treatment for osteomyelitis due to cat bite
ampicilling-sulbactam
Name for fracture-dislocation of the tarsometatarsal joints
Lisfranc injury
Lisfranc
- mechanisms of injury
- Severe plantar flexion of foot
- sports, MVCs, fall from height
Lisfranc
- clinical
- pain at tarsal-metatarsal joints
- ecchymosis, instability
- forefoot rotation against a stabilized hind foot (calcaneus) = severe pain (but not in sprained ankle)
Rotator Cuff
- tests
- Neer and Hawkins
Rotator Cuff
- common clinical findings
- pain brushing hair or teeth
- pain at night when rolling onto shoulder
- baseball pitchers
What imaging is appropriate for suspected disk herniation
none :)
Osteomyelitis
- XR findings
- Dx modalities
- periosteal elevation or bony erosion
- bone scan or MRI
Osteomyelitis
- MC orgs
- s. aureus
- sickle cell: salmonella
- cat/dog bite: pasteurella multocida
Osteomyelitis
- treatment
- adult vs. children
- long term abx
- debridement if nail puncture wound
- adults: contiguous spread
- children: hematogenous spread
Mgmt of Salter Harris fx
- splint with non-weight bearing as tolerated
Duodenal vs. gastric ulcer
- when eat food
- duodenal: pain alleviated (DUDe give me food)
- gastric: exacerbated by food
MCC of upper GI bleed
peptic ulcer disease
Peptic ulcer disease
- how to diagnose
upper endoscopy
Esophageal stricture
- mgmt
- dilation
- +/-PPI
Electrolyte and acid/base status in pyloric stenosis
- metabolic alkalosis
- hypochloremic
- hypokalemic
PUD
- treatment for h. pylori
- triple therapy: CAP (clarithromycin, amoxicillin, PPI)
- quad therapy (bismuth, metronidazole, tetracycline, PPI)
Esophageal rupture
- etiology
- spontaneous: Boerhaave syndrome
- Iatrogenic (esophageal dilation, intubation, EGD)
Esophageal rupture
- clinical
- chest/midepigastric pain
- pleuritic pain worse with neck flexion and swallowing
- mediastinal crunch
- rapid development of sepsis
Esophageal rupture
- dx
- mgmt
- chest xray shows mediastinal air and esophageal with water soluble solution
- broad spectrum abx, surgical consult
Esophageal varices
- treatment
- hemodynamic support
- octreotide
- prophylactic ceftriaxone
MCC liver disease in the US
Non alcoholic fatty liver disease
what vertebrae level is a swallowed foreign body most likely to get stuck?
C6: cricopharyngeus muscle (upper esophageal sphincter)
AP appearance of swallowed coin
- in trachea
- in esophagus
- oval: side view
- circle: flat view
Traveler’s Diarrhea
- MCC
- sx
- treatment
- enterotoxigenic E. coli (ETEC)
- diarrhea, abd cramps, nausea, bloating
- fluid replacement, cipro, azithromycin (pregnant and children)
Acute diverticulitis
- clinical
- abdominal pain
- n/v
- fever
- change in bowel habits (constipation MC)
- hematochezia (rare)
Acute diverticulitis
- dx
- CT: localized bowel wall thickening, pericolonic fat stranding, colonic diverticula
- US
- MRI
Acute diverticulitis
- management
- abx: cipro and flagyl
- surgical if complicated
Acute diverticulitis
- 3 MC complications
- obstruction
- perforation
- abscess
Acute diverticulitis
- diet recommendations
low fiber diet until asx for 6 weeks.
Ranson’s Criteria
- use
- list
Assess severity and mortality of acute pancreatitis
- Age >55
- WBC > 16k
- Glucose >200
- LDH > 350
- AST > 250
screening age for colon cancer
50 to 75
What electrolyte abnl is common post operative period? What can it cause?
- hypokalemia
- ileus
Ischemic Colitis
- cause
global low flow state
- HF
- MI
- Sepsis
- Hemorrhage
Ischemic Colitis
- presentation
- acute onset crampy abd pain, TTP over affected bowel
- blood diarrhea
- hx of atherosclerosis
- *differs from acute mesenteric ischemia which has pain out of proportion to exam
Ischemic Colitis
- imaging
CT: bowel wall edema
Ischemic Colitis
- mgmt
- signs of peritonitis, possible bowel infarction = immediate surgical intervention
- Most resolve with supportive care: IVF and bowel rest
Pneumocystis jirovecii PNA
- clinical
- immunocompromised: HIV or transplant pt
- HIV CD4 <200
- Sx progress over 2-3 weeks
- fever, dry cough
- O2 desaturation with ambulation
- LDH often elevated
- CXR: bilateral infiltrates (batwing pattern)
Pneumocystis jirovecii PNA
- treatment
- steroids if PaO2 < 70
- Bactrim
Bronchiolitis
- clinical
- Usu <2 yo
- preceded by 1-3 day URI prodrome
- fever, cough
- polyphonic wheezing and rales
- resp distress
Bronchiolitis
- complications
- dehydration
- apnea (premature or <2 mo)
- aspiration PNA, resp failure
Bronchiolitis
- mgmt
- Nasal suctioning, hydratoin
- ?bronchodilator, heated high flow nasal cannula, CPAP, intubation
TB
- active/reactive sx
- fever
- night sweats
- weight loss
- productive cough
- hemoptysis
TB
- CXR
- Ghon focus
- upper lobe, cavitary lesions
TB
- Dx
- latent/primary: PPD
- active/reactivation: sputum smear for AFB, sputum culture of AFB (GS)
TB
- mgmt
- Latent: INH x 9 months, rifampin for 4 months, INH/rifampin for 3 months
- active/reactive: RIPE (rifampin, INH, pyrazinamide, ethambutol)
TB
- what is given with INH to prevent peripheral neuropathy?
B6
Bronchitis
- sx
- PE
- CXR
- mgmt
- mucopurulent cough x 5 days +
- wheezing and rhonchi
- CXR: thickened bronchial walls in lower lobes
- supportive: dextromethorphan, guaifenesin
PE
- MC sx
- MX sign
- EKG
- dyspnea
- tachycardia
- nonspecific ST and T wave changes, S1Q3T3
PE
- CXR
- Hampton’s Hump
- Westermark’s sign
PE
- dx
- CT pulmonary angiography
- low clinical suspicion: can rule out with negative d-dimer
PE
- mgmt
- anticoagulation (heparin, LMWH)
- supportive
- thrombolytics if hemodynamically unstable
Hydrocarbon ingestion
- sx
- CXR
- non-specific: grunting, gagging, chocking, tachypnea, fever, persistent cough
- diffuse bilateral infiltrates
Carcinoid syndrome
- mgmt
octreotide
PNA
- CAP treatment for children
amoxicillin
CAP
- MCC
strep pneumoniae
“walking” PNA
- MCC
mycoplasma pneumonia
Egophony
- explain
- when found
- pt says “eee” but sounds like “ahh” (abnl finding)
- happens in PNA: sounds is transmitted through consolidated parenchyma
- helps differentiate PNA from other lung conditions like bronchitis or emphysema
Foreign body aspiration
- exam tool
- rigid bronchoscopy (flexible can dislodge the object and cause complete obstruction)
Nontraumatic intracerebral hemorrhage in adult
- MCC
hypertensive vasculopathy
- leads to degenerative changes and eventual rupture of penetrating arteries.
Cryptococcal neoformans in AIDS
- sx
- indolent onset, 1-2 weeks
- HA, fever
- stiff neck, photophobia, vomiting
- CD4 < 100
Cryptococcal neoformans in AIDS
- Dx
- india ink stain on CSF (round yeast)
- Cryptococcal antigen - CSF or serum
Cryptococcal neoformans in AIDS
- Mgmt
- Amphotericin B
- Fluconazole
- Flucytosine
Lidocaine toxicity
- CNS and CV problems secondary to sodium channel blockade
- dizzy, HA, tingling, tinnitus, sedation, tremor, seizure
- bradycardia, heart block, dysrhythmia
Amide local anesthetics
- Lidocaine
- Bupivocaine
** Two Is
Ester local anesthetics
- Tetracaine
- benzocaine
** only one I
What affect does hyperbaric O2 therapy have on carbon monoxide poisoning
reduces risk of neurologic sequelae
Brain abscess
- bugs
- strep
- staph
- anaerobes
Brain Abscess
- mgmt
- third get cephalosporin
- agent to cover anaerobes: metronidazole
- neurosurgery consult
SAH
- MCC
- ruptured aneurysm, often berry aneurysm in circle of willis
SAH
- Dx
- Noncontrast CT
- if negative but high suspicion: LP
SAH
- mgmt
- supportive
- Nimodipine (decreases cerebral vasospasm)
At what level does the spinal cord terminate in adults
L1-L2
** LP best L3/4 L4/5 or L5/S1
Treatment for active seizure
IV benzo (midazolam) Buccal, IM, and intranasal second line option for route
Status epilepticus
- define
- continuous seizure activity >5-10 min OR
- >2 seizures without full recovery
Status epilepticus
- mgmt
- finger stick glucose
- consider B6 of INH toxicity
1st line: benzo
2nd line: phenytoin, l
3rd line: pentobarbital, propofol
Thalamic hemorrhage
- contralateral hemisensory loss**
- hemiparesis and ocular sx
- acute with rapid progression
SAH Hunt Hess Grading Scale
I: mild HA, normal mental status, no nerve deficits
II: severe HA, normal mental status, cranial nerve deficit
III: somnolent, confused, maybe cranial nerve or mild motor nerve deficit
IV: Stupor, mod-severe motor deficit, intermittent reflex posturing
V: coma, reflex posturing or flaccid
Brudzinski Sign
Perform neck flexion
Positive test: reflexive flexion of hips and knees
Kernig’s Sign
Flex hip and knees to 90 and then attempt to extend the knee
- positive test: significant pain
Bacterial Meningitis
- sx
HA neck stiff photophobia phonophobia fever
Bacterial Meningitis
- MCC bug
strep pneunomiae
Bacterial Meningitis
- treatment
- 18-50 yo: ceftriaxone + vanc
- >50: ceftriaxone, vanc, ampicillin (listeria)
Median nerve
- motor
- sensation
- OK sign
- index finger
Ulnar nerve
- motor
- sensation
- 5th finger abduction
- 5th finger
Radial Nerve
- motor
- sensation
- wrist/finger extension
- dorsal thumb-index finger web space
Syringomyelia
- CSF cavity in spinal cord
- MC in c-spine
- Arnold-Chiari malformation
- Loss of pain and temp sensation, preserved proprioception and light touch in “cape-like” distribution
- MRI
Medication(s) recommended for secondary stroke prevention for non-cardioembolic TIA and ischemic stroke
Aspirin OR clopidogrel OR dipyridamole
But combo is not more effective but has higher risk of bleed
Posterior epistaxis
- less common than anteiror
- older population
- HTN/atherosclerotic disease
- More severe
- Admit pt with posterior packing to a monitored bed
Preseptal cellulitis
- overview
infection involving contents of orbit (adipose and muscle)
Preseptal cellulitis
- etiology
Children > adults
- bacterial rhino sinusitis (MC)
- orbital trauma w/ fx or foreign body
- dacryocystitis
- teeth, middle ear, face infection
- infected mucocele
Preseptal cellulitis
- clinical
- no pain with eye movement, proptosis, diplopia, visual impairment, all of which are seen with orbital cellulitis
Preseptal cellulitis
- mgmt
- broad spectrum abs: vanc + piperacillin-tazobactam
- surgery
Sinusitis
- mgmt uncomplicated
- mgmt complicated
- Amoxicillin
- Augmentin (daycare, <2 yo, abx in last 1-3 months)
Acute mastoiditis
- clinical
- lethargy and malaise
- abnl TM
- post auricular erythema and tenderness
- fever
- otalgia, otorrhea
Acute mastoiditis
- mgmt
- admission
- IV abx
- drainage
Acute mastoiditis
- MC bug
strep pneumonia
Retropharyngeal abscess
- clinical
MC 3-5 yo
- sore throat
- fever
- neck stiffness
- odynophagia
- neck swelling
- poor oral intake
Retropharyngeal abscess
- imaging
CT with contrast for dx
- XR will show widened retropharyngeal space
Dacrocystitis
- clinical
- unilateral, painful
- red, swollen, warm
- tender lacrimal sac
- ? purulent discharge
Dacrocystitis
- MC bug
staph aureus
Dacrocystitis
- mgmt
- warm compress
- gentle massage
- mild: clinda
- severe: vanc, 3rd gen cephalosporin
AOM
- abx choice
- First line: amoxicillin
Second line: 3/4th gen cephalosporin (Cefdinir) - Adults: consider augmentin d/t drug resistance
- PCN allergy: Azithromycin or Bactrim
Optic neuritis
- sx
- partial/complete loss of vision
- painful vision loss, retro-orbital pain
- altered color vision
- Uhthoff’s phenomena: worsening of vision with increased body temp
Optic neuritis
- dx
- slip lamp testing or direct ophthalmoscopy
- ocular MRI
- visual evoked potential testing
Optic neuritis
- mgmt
- steroids
Optic neuritis
- MCC
MS
Perichondritis
- MC bugs
- pseudomonas
- staph aureus
- strep pyogenes
Perichondritis
- mgmt
- Possible I&D
- FQ: cipro
- IV abx possibly
Periapical abscess
- hx of dental carries
- pain on tooth percussion
- PCN to treat + analgesia and dental f/u
Rhinosinusitis
- how to determine viral vs. bacterial
Bacterial if:
- sx >10 days
- worsen after 5-7 days
Rhinosinusitis
- mgmt
- 98% will resolve spontaneously
- analgesics mainstay of treatment: tylenol or NSAIDs
- if bacterial: Augmentin
Conjunctivitis
- mgmt
abx
- erythromycin
- gentamycin
- cipro
- ofloxacin
*contacts: FQ
Angioedema
- mgmt
- airway management!!
- Hereditary or acquired: FFP to replace C1-esterase inhibitor
- Drug induced: supportive care
Radial head fracture
- MC pt
- PE
- Xray
- adult with FOOSH
- localized swelling, TTP, decreased motion
- fat paid “sail sign”
What is the definitive exam to clear a cervical spine
c-spine MRI
* xray cannot visualize spinal cord and ligaments
Rabies
- MC animal
bats raccoons and skunks)
Rabies
- post-exposure prophylaxis
- Human rabies immunoglobulin
- 4 doses of inactivated rabies vaccine over 14 days
Rabies
- sx
- hydrophobia
- agitation
- spasms