Medicine 2 Flashcards
What is the best initial test for suspected dx of pneumothorax?
Bedside US is 90% sensitive and specific
upright AP view is good but only 50% sensitive
How do you calculate anion gap?
What is normal anion gap?
= Serum Na - (Serum Cl + Serum Bicarb)
normal = 12
Common causes elevated anion gap metabolic acidosis
MUDPILES Methanol Uremia DKA Popylene glycol/paraldehydre Isoniazid/Fe Lactic Acidosis Ethylene Glycol (antifreeze) Salicylates (ASA) *Metformin increases risk lactic acidosis (2.2 diarhrea)
Progressive neuro disease with symptoms in apraxia, language difficulties, executive dsyfunction. Over 60 years of age, pt become aggitated, irritable and frustrated.
Dx and Tx
Alzeihmers; irreversible and progressive. Pt pass away from infection/complications, malnutrition or dehydration
Tx Cholinesterase inhibitors to slow progression
Pt with stepwise decline and cognignition as well as possible focal neurological findings. Brain imaging shows multiple small cortical and subcortical infarcts.
Dx?
RF?
Vascular dementia
RF: hypertension, DM, elevated cholesterol
Newborn presents at 4 days of life with BL purulent conjuctival discharge, born at home. No routine labs done for mom during pregnancy.
Dx?
Tx?
Prevention?
Gonococcal conjuctivitis, dx with gram stain adn shows G - diplococci or + culture on Thayer martin
Tx is one dose of IM CTX of Cefotaxime
Prevention: erythromycin eye ointment
What are SE of Lithium toxicity?
What medications can precipitate this SE?
Confusion, ataxia, neuromuscular excitability
Be careful in co-administration with these drugs: NSAIDs, Thiazide diuretics (chlorthalidone), ACE inhibitors
Goal TI: 0.8 to 1.2 mEq/L
Acute onset and potentially fatal SE to medication; involves fever, extreme generalized lead pipe rigidity, autonomic instability, AMS
Neuroleptic malignant syndrome
What is the treatment for Lithium toxicity in patients with levels?
General Approach:
Levels >4
Levels >2.5 with signs or Sx of renal fail
General: q2-4 levels, aggressive IV hydration with NS, bowel irrigation if OD
Hemodialysis in pts >4 or 2.5 with renal fail or increasing levels despite aggressive IV hydration
Syndrome includes tremulousness, confusion, myoclonus, HYPERreflexia, hyperthermia, tachycardia, diaphoresis, HTN, V/D. From mult agents of same drug class
Serotonin syndrome From SSRIs MAOis: phenylzine SNRIs TCAs
What symptoms will women with prolactinoma present with? Men? Why?
Premenopausal, oligo/amenorrhea, infertility, galactorrhea, hot flashes, decreased bone density
Men: infertility, decreased libido, impotence, big boobs
High prolactin–> suppresses GNRH (gonadotropin releasing hormone), LH and FSH
How is prolactinoma dx and treated?
Prolactin level >200 + MRI
mild elevation may be 2/2 to other causes; meds as cause; antipsychotics, nipple stim, hypoT, stress/exercise)
Tx = Doapmine agonist (cabergoline, bromocriptine)
Pt with hx of well controlled T1DM presents with recurrent episodes of hypoglycemia, fatigue, wt loss, weakness and low BP with hyperpigmented skin.
Most likely dx?
What lab abnormalities would you expect to see?
Addisons, Adrenal insufficiency
HyperKalemia with mild metabolic acidosis ( can’t excrete either H+ or K+ bc of aldosterone loss)
HypoNa
May have hypoglylcemia and neutropenia
Pt presents with maroon stools and blood in rectum. Most likely location of bleed?
What would lead you to pursue EGD first?
Lower GI
Get EGD first in patient with hematochezia and hemodynamic instability… assume upper GI bleed until ruled out, resuscitate first
Most common adverse reaction occurring in 1-6 of receiving blood transfusion. Develop fever, chills, malaise /o hemolysis
Prevention?
Febrile nonhemolytic transfusion reaction
Due to small amt of residual plasma/leukocyte debris in red cell concentrate–> during storage these leukocytes release cytokines causing reaction
Prevent with Leukoreduction
Patients with BMT, acquired or congenital cellular immunodeficiency, Blood from 1st or 2nd degree relatives get what special tx for blood transfusions?
Irradiated
What patients get washed RBCs for transfusions?
IgA deficiency, Complement dependent autoimmune hemolytic anemia, Cont allergic rx despite antihistamines
What pts get leukoreduced RBC infusions
chronically transfused, CMV seroneg at risk, potential transplant, previous febrile non hemolytic transfusion patients
Home health aid services do NOT include..
medication or periodical health evaluation
What patients require eval with cystoscopy?
Gross hematuria w/o evidence of glomerular disease or infection
Microscopic hematuria w/o evidence of glomerular disease but risk of malignancy
recurrent UTI
Obstructive symptoms c/f stone or stricture
Irritative symptoms w/o UTI
abnormal bladder imaging
Seen in patients with preexisting asthma or CF; recurrent and quickly resolving asthma exacerbations, infiltrates on CXR and CT that quickly come and go, central bronchiectasis and coughing brownish mucus plugs
ABPA: Allergic bronchoplmonary aspergillosis = exaggerated IgE/IgG immune response
hypersensitivity dx associated w/ noninvasive aspergillosis colonization
Dx skin test for aspergillus, eosinophilia >500, IgE >417, Speficic IgG and E for A. fumigatus
Pt has ABPA, what is treatment
Steroids and itraconazole or voriconazole (NOT fluconazole)
Central bronchiectasis/brown mucus/fleeting infiltrates in hx of asthma or CF
Pt with difficult to control asthma, allergic rhinitis, nasal polyps, chronic sinusitis, skin stuff (granulomas, purpurua)
Dx
Churg Strauss or eosinophils granulmatosis with polyangitis; uncommon auto-immune vasculitis
_____ presents as linear papules, clear and fluid filled vesicles, painful and itchy and spread via contaminated clothes and resin
Tx?
Poison ivy dermatitis
remove clothes, cool compresses, topical steroids and oral if severe
Type IV hypersensitivity
Knee injury due to valgus (abductor stress) stress to partially flexed knee. Pt with pain, pop sound.
Or blow to the lateral knee with foot flexed or event twisting activities
Tender of medial knee and laxity when foot is aBducted and knee stationary (valgus stress test)
Medial cruciate lig injury
Uncommon to have effusion
Occurs with rapid pivots, deceleration or direction chnage or blow to knee with twisting force. Rapid onset hemarthrosis common. + laxity on anterior drawer or Lachman maneuver
ACL injury
Hyperextension to knee, tender along lateral joint line, often from dramatic varus or adductor stress
LCL injury
MC organisms in eye injuries?
What about contact wearers?
Staph (also strep, Haemophilus,)
PSA in contacts
Patient with insect bites, summertime. Has AMS consistent with encephalopathy, nucchal rigidity as well as fever, HA, vomiting
West nile (summer/fall); viral encephalopathy Lymes more meningitis over encephalopathy
How do old people with thyrotoxicosis present?
Apathy, confusion, tremor, proximal msl weakness.
decreased appetite, can have A fib, tachycardia and heart fail
Thyromegaly often absent
Dreaded side effect of amiodarone?
Pulmonary toxicity: chronic interstitial pneumonitis, organizing PNA or ARDS; non productive cough, fever, pleuritic chest pain and weight loss with DOE
its an antiarrythmic
normal coags, isolated thrombocytopenia, purpura with isolated thormbocytopenia on smear
Why?
Immune thrombocytopenic purpura
platelet destruction by antiplatelet autoantiB against platelet membrane
What is tx for ITP
kids with PLT <100,00: glucocortidoids, IVIV, anti-D if bleeding
Adults: >30,00 plt + cutaneous observe
<10,000: glucocortidoids, IVIG, antiD if bleeding and plateltes
Treatment of choice for TTP with HUS
plasma exchange
Blood transfusion reaction: Flank pain, dark urine, fever, hemolysis, oliguric renal fail and DIC
Acute hemolytic transfusion reaction; often mismatched blood (ABO or chronic transfusion Rh or Khell)
Tx: STOP infusion and aggressively hydrate with NS to prevent renal fail
Blood transfusion: patient gets uticaria everywhere, rection and tx
Uticarial, Recipient IgE vs blood compoment, occurs in 2-3 hrs
Pt blood transfusion, develops resp distress and has noncardiogenic pumonary edema, see pulmonary infiltrates BL
Transfusion related acute lung injury
From donor anti-leukocyte antB
Pt with heart fail gets blood transfusion; dyspnea, tachycardia, hypertension and hypoxemia. PT has hypervolemia with increased central venous pressures, pulmonary edema, elevated BNP
Dx
Tx
TACO: transusion associated circulatory overload
Tx: diuretics, oxygen, may need Non invasive PPV`
SE of
Carbamazepine
Lamictal
Valproic acid
Carbamazepine: Bone marrow suppression (watch for neutropenia, thrombocytopenia, anemia), SIADH and hypoNa
Lamictal: SJS and severe skin reactions
Valproic acid: limb deformities in preggo
When is a HC growing TOO fast?
What do we do?
> 97% = macrocephaly (may be familial)
worry if >2cm/month in infant <6mo
neurologic issues or DD
Get head US if ant font are open
What meds and electrolyte disturbances cause long QT (long QT–> polymorphic V tac then torsades de pointes)
Meds: diuretics, zofran, haloperidol/quetiapine/risperidone, TCA adn SSRI, antiarrhythmics (amiodarone, sotolol, flecainide), antianginal, anti-infective (macrolids, FQ, antifungal)
HypoK, HypoMg, HypoCa
What arrythmias cause long qT
sinus node dysfunction, AV block (2nd or 3rd degree)
First line therapy for tx and prevention of recurent torsades?
IV Mg, may need temp transvenous pacing if they do not respond. Don’t do anything to further slow the heart rate! Bradycardia/arrythmias can make worse
Patient with VZV outbreak failed o/p treatment and now has non-adjacent spread of shingles, needs admitted for IV acyclovir. What precautions should they be on?
Contact + airborne
just contact if in only one area
What is the screening for HIV and when should you test after exposure?
HIV antigen (p24) and HIV1 and 2 antibodies titers may be too low in first 1-4 weeks after exposure, repeat it
What should be tested before starting someone on HARRt therapy bc it also treats that?
Hep B
Pt with CV catheter (on hemodialysis) has fever. What antiB are started?
When do you remove the catheter?
MC organisms?
Start Vanc/Cefipime (or gent)
Remove if hemodynamically unstable, severe sepsis, c/f metastatic infection (endocarditis) pus at cath site, symptoms despite tx
Cause: CONs, Staphylococcus, Gram (-) bacilli
Trastazumab is used for HER2 positive tumors, can cause what complication?
Cardiotoxicity: decreased LVEF that may or may not cause symptoms and is REVERSIBLE once therapy is stopped
chemo medication that causes dose related cardiotoxicity
anthracyclines
patient has excessive daytime sleepiness, falls asleep suddenly at work and in classes, states he hears strange noises right before he falls asleep and frequent wakenigns at night.
dx and cause
narcolepsy, dx with sleep study
has hypocretin 1 deficiency in CSF,latent REM sleep <15 mins
What is first line therapy for narcolepsy?
What about cataplexy (fainting goat in emotional stress)
Modenifil: is a novel stimulant with more favorable SE profile
Can use other stimulants but more addicting
Cataplexy: can do SSRI/SNRI
Patient has decreased BS on the right side. Currently intubated on high support. Vitals are otherwise stable, no tracheal deviation noted, BP appropriate. What do you do for management?
Place chest tube
If patient has tension pneumo physiology (hypoT, abscent of JVD, tracheal deviation) then you do not need to do needle decompression first, just provide definitive tx of CT (if it does exist… needle then CT)
Pt presents with PE consistent with acute pancreatitis.
What is needed to establish diagnosis?
2 of 3 criteria
- Characteristic epigastric pain
- A or L 3x normal
- Imaging consistent w/ pancreatitis
Imaging: US is good first line bc helps look for etiology; gall stones or cholecystitis as well as being rapid, safe and cheap.
CT and MRI are more sensitive for more pricey. Use for suspected complications
Most common etiologies of acute pancreatitis?
EtOH, gallstones, hypertriglyceridemia (test lipids if you don’t know the cause), recent retrograde cholangiopancreatography (ERCP), medications, infections, trauma
Pt is now day 3 of tx for acute pancreatitis, was getting better. Now have fever, recurrence of pain, elevated white count. What is next best step for management? what are you concerned may have occured?
CT of abdomen w/ contrast
Necrosis of pancreas: tx with antibiotics + debridement when >30% is infected/nectrotic.
What is the mechanism of parathyroid hormone?
What affect does it have on Calcium?
PTH: reabsorbs Ca in distal tubule, excretes phosphate at proximal tubule
Activates Vt D from 25–> 1,25 dihroxy
Resorbs Ca and phosphate from the bone
40 yo Patient comes in with confusion, constipation and abdominal pain, bone pain with new occult hip fracture and signs of osteoporisis on imaging. What lab do you want to get?
Ca and PTH; concern for hypercalcemia 80% from solitary adenoma 19% have 4 gland hyperplasia 1% cancer Dont forget about MEN
In what situations do we remove the parathyroid gland?
Symptomatic disease (stones, bones, groans, pysch overtoans)
renal insufficiency, or nephrogenic DI (thirsty/pee)
Ca >12.5
Age <50
Osteoporosis
What is medical management for hyperparathydoirdism with hyperCa
Hydration with NS
Bisphosphonate (these are slow acting but effective)
Lasix AFTER rehydration (will increase Ca excretion)
Calcitonin if hydration and lasix don’t control Ca level
Patient presents with elevated PTH, low Ca and elevated Phosphorus levels. On imaging there are bilateral cataracts adn basal ganlia calcifications.
What is most likely diagnosis?
Pseudohypoparathyroidism
end organ resistance to PTH; results in chronic hypoCa (causes cataracts and calcification in basal ganglia)
Pt with hypocalcemia (tetany, seizure, cramping, hyperreflexia) with low phosphorus and high PTH, cause?
Vit D deficiency
Pt with HYPOcalcemia, elevated phosphorus and low PTH, cause?
Hypoparathyroidism
PTH increases Ca absorbtion, increase Phos excreation
Pt with hypoCa, high phosphate and high PTH? Cause?
Two causes:
- Pseudohypoparathyroidism (look for signs of chronic hypoCa in this situation as there is end organ resistance to PTH… cataracts and basal ganglia calcifications)
- Hyperphosphatemia