ABEM Recert Exam pt. 3 Flashcards
Mastoiditis: MCC
Strep pneumo
How to diff labrynthitis vs Menierre’s disease
Menierre’s disease has hearing loss, labrynthitis doesn’t
Otitis media: When is it okay to do delay antibiotic strategy
Age >2
Well appearing
Diphtheria: Rx
Antitoxin and PCN G
Diphtheria: si/sx
“Bull neck” deformity, F/C, sore throat, gray coating in throat
CENTOR criteria for pharyngitis
- Tonsilar exudates
- Lymphadenopathy
- Fever
- Absence of cough
CENTOR criteria: How to use
0-1: Do not test or treat
2-3: Test and treat if positive
4: Treat without testing
Appendicitis: Urine findings and why
50% can have pyuria (WBC in urine) and hematuria if appendicitis present for 3+ days because ureters run close to appendix
AAA: At what size don’t you have to worry about rupture
<4cm has essentially no chance of rupture
Q wave: Definition
1 box wide, 1/3 height of R wave in 2 contiguous leads
Inferior MI: Vessel involved
RCA occlusion
Anterior MI: Vessel involved
LAD occlusion
Lateral MI: EKG changes
I, avL, V5, V6
Posterior MI: EKG changes
ST depression in V1, V2 with upright T waves
Posterior MI: Vessel involved
Circumflex
Septal MI: EKG changes
ST elevation V2, V3
Sometimes have ST elevation in I & aVL
Subarachnoid hemorrhage: EKG changes
Sometimes can see large, broad diffuse T wave inversions
Pericarditis EKG changes
- Diffuse ST elevation & PR depression
- PR returns to baseline
- T wave inversions
- Normalization of EKG
CHF: 3 stages of CXR findings
- Cephalization
- Insterstitial edema (curly B lines)
- Alveolar edema (bat wing)
Dilated cardiomyopathy: Causes
Alcohol
Ischemia
Amyloidosis
Widened mediastinum: Definition on PA CXR
> 8 cm
AAA repair patient who presents with BRBPR: What to r/o
Aortoenteric fistula
Hyperkalemia: EKG change progression
- Peaked T
- Increased PR
- Wide QRS
- Bundle branch block
- Sine wave
- Asystole
Hypocalcemia: EKG changes
Long QT
Hypercalcemia: EKG changes
Short QT
Hypomagnesemia: EKG changes
Long QT
TCA OD: EKG changes
QRS > 100ms or QTc > 430 ms
TCA OD: Rx for patients with EKG changes
Sodium bicarb
Adenosine: When not to use
WPW with wide QRS tachycardia
Also don’t use CCB
WPW with wide QRS tachycardia: Rx
Procainamide or amiodarone or cardioversion
NO adenosine
Aortic insufficiency murmur
Short diastolic murmur
Austin-Flint murmur (low pitched rumbling murmur at apex)
Aortic insufficiency: si/sx on physical exam
Nailbed pulsations with each beat (Quinke’s sign)
Mitral stenosis: MCC
Rheumatic fever
Mitral regurgitation: Causes
AMI
Endocarditis
What does acute new onset mitral regurgitation murmur suggest?
Rupture of chordae tendonae or papillary muscle
MVP: Murmur
midsystolic click
Most common heart murmur
MVP
Endocarditis: Frequency of valves affected
Mitral > Aortic > Tricuspid > Pulmonic
Endocarditis in prosthetic valves: Causes
In 1st 2 months = Staph Aureus or Staph epididymitis
>2 months after surgery = Strep viridans
R-sided endocarditis: Typical cause
IVDA
Usually involves tricuspid valve
L-sided endocarditis: Typical cause
Congenital or acquired
Endocarditis in IVDA: Typical pathogen
Staph aureus
Most common cardiac abnormality
VSD
Infant with CHF: What to suspect based on timing of onset
1st day: PDA 1st week: Hypoplastic left heart 2nd week: Coarctation of the aorta 1st month: VSD 3+ months: SVT
Torsades: Rx
Magnesium 1-2 gm IV then drip at 1-2 g/hr
Do you treat reperfusion dysrhythmias after TPa?
No, they’re common
Janeway lesions: What are they are what are they seen with?
Non-tender macules on palms and soles seen with endocarditis
MAP: How to calculate
(SBP + 2DBP) / 3
Antiarrhythmic classes
- Sodium channel
- Beta blocker
- Mixed
- Calcium channel
Digibind: When to use
Serum digoxin > 10 or K >5.5
Digoxin toxicity: EKG findings
PVCs are most common
PAT with AV block is classic
Tetralogy of Falot: Components of
- VSD (causes R-L shunt)
- Pulmonic stenosis
- Overriding aorta
- RVH
Tet spell: non-pharmacologic rx
Place patient in knee-chest position
Most common cyanotic heart defect in age >1 yo
Tetralogy of Falot
Which is most specific liver enzyme for liver damage?
ALT
Increased AST seen in mitochondrial damage and can occur outside of liver
What does increased conjugated (direct) bilirubin mean?
Liver damage, liver cells aren’t working properly to remove conjugated bilirubin
What does increased unconjugated (indirect) bilirubin mean?
Hemolysis or Gilbert’s syndrome
Subacute bacterial peritonitis: Lab values for
WBC > 1000 or PMNs > 250 on paracentesis fluid
Cultures can be negative
How many DKA patients are Type I diabetic?
2/3
How many DKA patients are Type II diabetic?
1/3
Previously thought that only Type I could get DKA
Physiology of cortisol production
Pituitary gland makes ACTH
ACTH stimulated adrenal cortex to make cortisol
Cortisol produces negative feedback to pituitary
Adrenal cortex also makes aldosterone
Primary adrenal insufficiency: Pathophysiology
Adrenal gland failure
Si/sx due to decreased aldosterone and decreased cortisol
Secondary adrenal insufficiency: Pathophysiology
Pituitary gland failure
Si/sx due to decreased cortisol only (aldosterone is normal)
Secondary adrenal insufficiency: MCC
Stopping steroids
How to diff primary vs secondary adrenal insufficiency on labs
Primary has hyperkalemia
Secondary has normal potassium
Frostbite: Degrees and si/sx of each
- grey tissues
- clear blisters
- hemorrhagic blisters
- tissue necrosis
Nitrogen narcosis: si/sx
Altered MS that occurs 70’-100’ deep under water
Resolves when patient ascends and usually asymptomatic out of water
Amanita Phalloides: si/sx of ingestion
N/V after eating, then liver failure day 3+
Amanita Phalloides: What time of year is mushroom usually found?
Fall
Types of poisonous snakes
- Pit vipers (rattlesnakes, cottonmouths, copperheads)
2. Coral snakes
Disposition for anyone treated with snake antivenom
Admit
Coral snake bite: Rx
Antivenom
Admit all for observation since neurotoxicity can occur up to 12 hours later
Jelly fish sting: Rx
Wash off neumatocysts with warm sea water, then vinegar
Fresh water will cause neumatocysts to explode
Ciguatera toxin poisoning: Cause
Scombroid fish
Cigatera toxin poisoning: si/sx
Presents like an allergic reaction
Reversal of hot and cold sensations is pathognomonic
Arrhythmia that DC causes
VF
Arrhythmia that AC causes
Asystole
Food poisoning: 2 MCC
- non-typhoid salmonella is most common
2. Staph aureus is 2nd most common
Yersinia: si/sx
Can cause terminal illeitis which looks like appendicitis
Most common cause of anemia worldwide
Hookworm infection
Hookworm: How is it transmitted?
People walk barefoot
Hookworm: Causative agent
Necatur americanus
Large bowel obstruction: MCC
Tumors
Small bowel obstruction: MCC
Adhesions