Step 2 Flashcards
lethal triad =
acidotic + hypothermic + coagulopathic
CT head shows gray-white blurring =
Diffuse axonal injury
- occurs via angluar trauma
- no treatment
- poor prognosis
How to calculate fluids for a burn patient?
Parchland Formula
4 x kg body weight x % surface area burned = fluids in 24 hr
- give first 50% in first 8h
- give next 50% in next 16h
To calculate % surface area burned = rule of 9s
infection prophylaxis for burn patients?
Topical mupirocin
Topical silver sulfadiazine
How to assess the long term treatment of someone with Afib
Rate control (Beta blocker), Rhythm control, Anticoagulation
Angicoagulation (CHA2DS2-VASc)
- CHF
- HTN
- Age >75
- DM
- Stroke
- Vascular disease
- Age 65-74
- Sex (female)
If score 0-1 = ASA only
If score 2+ = oral anticoagulation (NOAC, Warfarin with INR 2-3)
What does giving fluids to someone and then them becoming hypertensive, bradycardic and go into respiratory depression indicate?
Cushing’s reflex = indicates elevated ICP
Blunt abdominal trauma leading to a GI perforation most commonly affects what portion of the tract?
Damage to mesenteric blood supply leads most commonly to jejunal ischemia
AFP? beta-hCG?
nonseminomatous germ cell tumor
seminomatous tumor
Nonseminomatous = elevated AFP, elevated beta-hCG
- embryonal (normal AFP)
- yolk sac tumors
- choriocarcinoma
- teratomas
Seminomatous = normal AFP, elevated beta-hCG, increased placental Alk Phos
calf is rapidly worsening, swollen, tense, exquisitely tender, pain worsened by passive extension, distal pulses intact =
compartment syndrome (soft tissue swelling)
- dx via measuring tissue pressure (>30 mmHg) or dela pressure (Diastolic BP - Compartment P <20-30 mmHg)
- tx = fasciotomy
DDX
- arterial embolism - absent pulses, pallor of affected limb
- DVT - vague aching pain
Emergent warfarin reversal
Fresh Frozen Plasma (FFP) - the most rapid method
Vit K - reverses slowly, depends on the synthesis of new vit K dependent clotting factors
Prothrombin Complex Concentrate (PCC) - has prothrombin for rapid reversal + Vit K for long term reversal - used for Intracranial hemorrhage
pathogenesis of vasovgal syncope
increased parasympathetic activity -> bradycardia -> peripheral vasodilation -> decreased CO -> syncope
Differential for Low Ca, High Phos
Low PTH - primary hypoparathyroidism
- 2/2 post-surgical, autoimmune, defective receptor, non-autoimmune infiltrative destruction
- will have normal kidney function
Low Vit D 2/2 CKD
- results in secondary hyperparathyroidism (PTH will be high)
- will have poor kidney function (high Cr)
pathology of hyperventilation as a treatment for increased ICP
Hyperventilation -> decreases PaCO2 -> cerebral vasoconstriction -> decreased cerebral blood flow -> decreased cerebral blood volume -> decreases ICP
What is ICP consist of (3) and what are ways to reduce it
ICP = 3 compartments
- brain parenchyma (can reduce this pressure via mannitol)
- CSF (can reduce this pressure via therapeutic lumbar punctures)
- cerebral blood flow (can reduce this pressure via hyperventilation)
Ankle Brachial Index cut off for occlusive PAD
ABI greater than 0.90 is diagnostic for occlusive PAD
Fever, lower abdominal/flank pain, leukocytosis, increased pain when hip is extended, less pain when hip is flexed
Psoas abscess
- Dx = CT
- Treatment = drainage
metaclopramide - pro motility or anti motility?
Promotility - dopamine antagonist
Colonic watershed areas (2)
- Splenic flexure (superior mesenteric artery, inferior mesenteric artery)
- Rectosigmoid junction (sigmoid artery, superior rectal artery)
Premature infants with grunting, flaring, retractions, central cyanosis immediately after birth =
Treatment?
Respiratory Distress Syndrome
Treatment = continuous
Acrocyanosis =
Blue extremities + Pink body
- common
- benign
- may last for 1-2 days
Indomethacin contraindication =
intraventricular hemorrhage
-Indomethacin used to close PDA
To keep PDA open =
Which conditions require an open PDA to survive? (4)
prostaglandin E1
PDA is required in =
- transposition of great vessels
- tetralogy of fallot
- hypoplastic L heart
- coarctation of aorta
Pathogenesis of Fanconi anemia
Chromosomal breaks due to DNA repair problem
- congenital aplastic anemia
- pancytopenia
- macrocytosis
- cafe au lait spots
- absent thumbs
- short stature
- horseshoe kidney
Down syndrome + Upper motor neuron symptoms =
atlantoaxial instability
Treatment of strabismus
Strabismus = ocular misalignment
- tx: penilization therapy (cycloplegid drops to blur the normal eye), occlusion therapy to normal eye, prescription glasses, surgery
- may be normal up until age 5
dermal melanocytosis
Mongolian spot
-self resolving
Neuroblastoma vs Wilms Tumor
Neuroblastoma
- neural crest cell tumor
- abdominal mass that does cross midline
- yes systemic symptoms
- calcification seen on XR
- elevated urine and serum catecholamines
Wilms Tumor
- renal malignancy
- abdominal mass that does not cross midline
- asymptomatic
Physiologic jaundice causes (3)
- increased RBC concentration at birth and therefore increased breakdown (unconj BR)
- decreased amount/activity of enzyme (unconj BR)
- increased enterohepatic recycling because there are not enough colonic bacteria to make uroBR therefore increased reabsorption of conj BR (conj BR)
Arises >3 days after birth
Resolves within 1-2 weeks
Treatment of Impetigo
Impetigo -
- Nonbullous: Staph aureus or Group A Strep, painful nonpruritic pustules that become honey-crusted lesions
- Bullous: Staph aureus, rapidly enlarging flaccid bullae with yellow fluid, painful
- Tx: minor - topical mupirocin; severe - oral cephalexin, dicloxacillin, clindamyin
- Dx: clinical
Infant contraindication to breastfeeding =
Galactosemia
- Absence in galactose-1-phosphate uridyltransferase
- Accumulation of galactose 1-phosphate in liver, kidney, and brain
- increased risk for E coli neonatal sepsis
Centor Criteria
Used to diagnose Group A Strep Pharyngitis in adults Criteria -Fever (measured or via history) -Tender anterior cervical lymph nodes -Tonsillar exudates -No cough
0-1 positive = no diagnosis, no treatment
2-3 positive = rapid strep antigen test, treat if positive
4 positive = treat
Treatment for Group A Strep Pharyngitis
Oral penicillin or amoxicillin
Traction apophysitis
Osgood Schlatter Disease
- caused by rapid growth which causes the quadriceps tendon to put traction on the apophysis of the tibial tubercle
- dx via xray
When is the varicella vaccine given
2 doses
- 1 year old
- 4 year old
palpable _ lymph nodes are always pathologic until proven otherwise
supraclavicular
exclusively breastfed infants require what supplementation?
- Vitamin D
- If premature, also require Iron for 1 year
Treatment of tourettes
- nonpharmacological
- pharmacological
Nonpharm:
-Habit reversal training (HRT)
Pharm:
- Alpha2 adrenergic agonists (Clonidine, Guanfacine)
- First generaltion antipsychotics (Haloperidol, Pimozide) - lots of side effects
- Second generation antipsychotics (Risperidone)
Floppy baby ddx
- Infant botulism (spores in honey or environment)
- Werding Hoffman Syndrome (degeneration of anterior horn cells and CN motor nuclei)
- Pompe disease (elevated ck, lactic acidosis)
- Prader Willi (hyperphagia, undescended testicles, missing Dad’s chromosomes)
otitis externa (2 bugs)
tx =
otitis externa = “swimmer’s ear”
- Pseudomonas aeruginosa
- Staph aureus
tx = remove debris, topical abx (fluoroquinolone), +/- topical glucocorticoid
recurrent skin infections and oral mucosal infections. lab shows marked neutrophilia.
Leukocyte Adhesion Deficiency
macrosomic fetus size
greater than 4.5 kg (9.9 lbs)
treatment for minimal change disease
steroids
-do not need to do a biopsy unless patient does not respond to steroids
Basophilic stippling (2)
- thalassemia
- heavy metal poisoning
Howel Jolley Bodies
people with functional asplenia or actually no spleen
Heinz bodies
-G6PD
How to work up developmental hip dysplasia
If less than 4 months old - ultrasound hips
If greater than 4 months old - XRay hips
Refer to ortho
Recurrent skin infections and oral mucosa infections. Takes a long time for injuries to heal.
Leukocyte Adhesion Deficiency (LAD)
- defect in chemotaxis of leukocytes
- may also present with delayed cord separation, no pus in wounds
- Leukocytosis with increased neutrophils in the blood (because they cannot get out)
- tx = bone marrow transplant
Treatment of Methemoglobinemia
Cyanotic, Pulse ox ~85%, Dark chocolate colored blood, Normal PaO2
Administration of oxygen will not improve symptoms
Path: decrease in O2 delivery to tissues
Tx = Methylene blue
Recurrent pulmonary and cutaneous infections
Chronic Granulomatous Disease
- XR
- Catalase positive orgnisms
- Dx: neutrophil function tests (Dihydrorhodamine test, Nitroblue tetrazolium test)
Strawberry hemangioma vs Cherry hemangioma
Strawberry = in infants/children
- present at birth
- may get larger but then spontaneously regresses
- benign
Cherry = adults/elderly
- may increase in number as we age
- benign
Symmetric dorsal swelling of hands and feet in an African American infant
Dactylitis
-vasooclusion in sickle cell diseae
Child with lymphadenopathy, splenomgaly, an increased number of blasts on peripheral blood and positive PAS and positive TdT
ALL
-most common in children
infant with acute abdominal distension, bilious vomiting, gasless abdomen on Xray = next step
Upper GI series (barium)
- volvulous = corkscrew
- malrotation = ligament seen on R instead of L
muscular dystrophy with testicular atrophy, facial muscle wasting
Myotonic Dystrophy
- AD
- grip myotonia, dysphagia
- associated with arrhythmia, cataracts, balding, testicular atrophy
- death from respiratory or heart failure
Duchenne and Becker are XR
When can external cephalic version of a baby be done?
37 weeks or greater
contraindications
- placental abnormalities
- oligohydramnios
- hyperextended fetal head
- fetal/uterine abnormalities
- multiple gestations
Tamoxifen VS Raloxefen
Both are SERMs and work to prevent breast cancer
sfx: hot flashes, VTE (2/2 protein C resistance leading to a hypercoag state)
Tamox - also has a sfx of endometrial hyperplasia
Ralox - also for post menopausal osteoporosis prevention
new onset dysmenorrhea in a woman over 40 yo who on exam has an enlarged uterus
Adenomyosis
What is a and what are contraindications to a contraction stress test (2)
Contraction stress test = oxytocin and nipple stimulation to try to elicit contractions - 2 within 10 min
Do it when the baby is less than 36 weeks
Contraindications
- placenta previa
- prior myomectomy
GBS swab is done at - weeks
35-37 weeks
“lumpy uterus” (3)
- Endometrial polyps - inter-menstrual spotting
- Uterine sarcoma - very rare, post menopausal woman
- Leiomyomata uteri (Fibroid) - very common in reproductive age women, recurrent pregnancy loss, dysmenorrhea
in a post-menopausal woman, ultrasound pelvis shows thick septations, solid components and peritoneal free fluid
Epithelial ovarian ca
-usually already has mets by the time of discovery
side effects/adverse effects of oxytocin (3)
- Hyponatremia (may lead to seizures)
- Hypotension
- Tachysystole (abnormally frequent contractions - 6 in 10 minutes)
How to dx preeclampsia
Preeclampsia = proteinuria + HTN
Proteinuira dx via -24 hr urine protein collection >300mg OR -urine protein/cr ratio >0.3 OR -dipstick >1+
CA-125
tumor marker for epithelial cell ovarian tumor
- postmenopausal women
- appears late, often has mets
- dx: TVUS + tumor marker levels
Treatment of endometrial biopsy that shows endometrial hyperplasia (symptom: abnormal uterine bleeding)
Progesterone
-P is protective to the endometrium
Path and treatment of
- neurogenic/overflow incontinence
- urge incontinence
- stress incontinence
Neurogenic/Overflow - no contractions of the detrusor
-cholinergic agonist (Bethanechol)
Urge - random spasms of the detrusor
- bladder training
- muscarinic antagonist (Oxybutynin) or beta-agonist
Stress - weak pelvic floor
- kegel exercises
- pessaries
- surgery
Trisomy 21 on quad screen
- MS-AFP
- beta-hCG
- Estriol
- Inhibin A
- MS-AFP = low
- beta-hCG = high
- Estriol = low
- Inhibin A = high
Elevated MS-AFP on screening =
NTD or abdominal wall defect
Best test to test for Trisomy 21 in utero?
Cell-free fetal DNA test
- can be done >10 weeks
- non-invasive
- not diagnostic but has a high sensitivity and specificity for aneuploidy
antibiotics for chorioamnionitis
Chorioamnionitis = ascending infection while the baby is still in
- premature ROM + fever
- elevated IL-6, low glucose on amniocentesis
- tx: ampicillin + gentamicin
antibiotics for endometritis
Endometritis = ascending infection after the baby is out
- hx of premature ROM + current fever
- tx: clindamycin + gentamicin
At what beta-hCG can you see an intrauterine pregnancy on transvaginal ultrasound?
at greater than 1500
Do not give tocolytics after _ weeks
What are 4 different tocolytics and when can they be used?
Do not give tocolytics after 34 weeks
- Indomethacin - cox inhibitor (<32 weeks)
- Nifedipine - ccb (<32-34 weeks)
- Terbutaline - beta agonist - not used due to side effects
- Mag sulfate - very weak
Dx and treatment of hyperemesis gravidarum
Dx:
- first rule out molar pregnancy with ultrasound + beta-hCG
- evaluate labs: ketonemia, ketonuria, hyponatremia, hyokalemic, hypochloremic metabolic alkalosis
Tx:
not severe = it B6 + Doxylamine (Anti-histamine)
severe = anti-emetics + IVF
Child ingested unknown pills and now has nausea, vomiting with blood, green diarrhea
Iron poisoning
- GI symptoms are first: hemorrhagic because iron is caustic to the GI tract, green diarrhea because of the iron reaction
- later symptoms include: severe lactic acidosis, hepatotoxicity, and diffuse organ failure
adult with recent onset fatigue, weight loss, splenomegaly, diffuse lymphadenopathy, lymphocytic leukocytosis =
treatment =
CLL
- lymphocytic leukocytosis
- smudge cells
- treatment = monoclonal Ab against CD 20 antigen
CML = neutrophilic leukocytosis -treatment = BCR-ABL tyr kinase inhibitors
Wide QRS indicates impulse is generated =
treatment for almost all wide complex tachycardias
in the ventricles
tx = amiodarone