Medicine Flashcards
Gram pos filamentous rod
Actinomyces
What bug causes Craniofacial infections after dental procedures?
Actinomyces
What are 3 features of actinomyces infections?
- Abscess formation
- Sinus tracts
- Sulfur granules
What is the best abx for actinomyces infections
Penicillin
What are 4 EKG findings in ischemia?
- ST changes
- New LBBB
- T-wave inversions
- Pathologic Q waves
What lung cancer is associated with SIADH?
Small cell
What is the initial therapy for SIADH and why? What if severe?
Water restriction (if serum Na >120 and pt asx) to increase serum sodium, but can give hypertonic saline + furosemide if pt develops symptoms of hyponatremia
What are sx of severe hyponatremia?
Lethargy
Altered mental status
Seizures
Coma
How do you differentiate between folate and vitb12 deficiencies
Folate – elevated homocysteine, normal MMA levels, no neuro sx
VitB12 – elevated homocysteine, elevated MMA levels, neuro sx
What is the initial treatment of tachycardia or afib secondary to hyperthyroidism?
Beta blocker (if HD stable) or cardioversion (if unstable)
inflammation, fibrosis and segmental constriction and dilation of infra and extrahepatic bile ducts
Primary sclerosing cholangitis
Dx test for primary sclerosing cholangitis
ERCP or MRCP
Decreased ceruloplasmin
Wilson’s disease
Elevated CA 19-9
Cholangiocarcinoma
Colon cancer
Pancreatic cancer
Positive antimitochondrial antibodies
Primary biliary cholangitis
What Antibody is found in primary biliary cholangitis?
Antimitochondrial Antibody
Dx test for Wilson’s disease
Low plasma ceruloplasmin
Nonsuppartive granulomatous destruction of intrahepatic bile ducts
Primary biliary cholangitis
treatment of Hodgkin Lymphoma
BEACOPP – bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine, prednisone
Adverse effect of doxorubicin
Cardiotoxicity
Which chemotherapy agent is associated with cardiomyopathy?
Doxorubicin
Adverse effect of bleomycin
Pulmonary fibrosis
What chemotherapeutic agent is associated with pulmonary fibrosis?
Bleomycin
What are the 2 side effects of vincristine?
Areflexia
Peripheral neuritis
Which chemotherapeutic agent is associated with peripheral neuritis
Vincristine
Most common cause of Endocarditis in IV drug users
Staph aureus
Features of acute hypocalcemia
Tetany
Seizures
Papilledema
Features of chronic hypocalcemia
Dental problems
Cataracts
Basal ganglia calcification
Extrapyramidal symptoms
Ferruginous bodies are associated with what
Asbestosis
Asbestos exposure increases risk of what?
Bronchogenic carcinoma
Mesothelioma
What causes calcified pleural plaques
Asbestosis
Acid base disturbance in aspirin toxicity
Combined AG metabolic acidosis and respiratory alkalosis
Isoprotenerol
Nonselective B1 and B2 agonist
2 examples of nonselective alpha and beta blockade
Labetalol
Carvedilol
Diffuse alveolar damage causing increased alveolar capillary permeability
ARDS
Bronchiectasis
Dilated airways caused by chronic necrotizing pulmonary infections, obstructions or congenital anomalies causing dyspnea, purulent cough and hemoptysis
what is the treatment of chronic granulomatous disease?
IFN-y
What 5 diseases is IFN-a used for?
Hep B Hep C Kaposi sarcoma Malignant melanoma Leukemia
What is IL11 used to treat?
Thrombocytopenia
What 2 diseases is IL2 used to treat?
Metastatic RCC
Metastatic melanoma
Abdominal pain, diarrhea, bloating all relieved with bowel movements
IBS
Treatment of IBS
High fiber diet Water intake Exercise Avoid caffeine Antidiarrheals (loperamide) acutely
What drug can be used to treat gastroparesis?
Erythromycin
What is bismuth used for?
Peptic ulcers
What are 4 indications for treatment with octreotide?
Acromegaly
Carcinoid tumors
VIPomas
Esophageal variceal bleeds
What is the mechanism of action of aspirin?
Irreversibly inhibits COX1 and COX2 preventing conversion of arachidonic acid to thromboxane which mediate platelet aggregation
Which heart sound is associated with longstanding HTN?
S4
Which heart sound is benign in patients under 40?
S3
Which heart sound is associated with CHF?
S3
What is the diagnosis – headache, fever, hypesthesia in eye, photophobia, keratitis, crusted lesions on face
Herpes zoster ophthalmicus
What is the best treatment of herpes zoster ophthalmicus
IV acyclovir, valacyclovir or famciclovir
What is a feared complication of untreated herpes zoster ophthalmicus
Acute retinal necrosis
What are the iron studies in iron-deficiency anemia?
Serum iron low
Ferritin low
Transferrin saturation low
TIBC high
What are the iron studies in hemochromatosis?
Serum iron high
Ferritin high
Transferrin saturation high
TIBC low
What are the iron studies in anemia of chronic disease?
Serum iron low
Ferritin high
Transferrin saturation low
TIBC low
What vitamin deficiency condition is associated with celiac sprue?
Iron deficiency anemia
What is the treatment of iron deficiency anemia?
PO Iron sulfate
A pt with Crohns presents with periumbilical pain, N/V, fever, weight loss, and palpable RLQ mass. Diagnosis and next best step?
Abscess
CT Abd with PO and IV contrast
What is a complication of hepatic adenomas?
Rupture causing intraperitoneal hemorrhage and shock
What is the next best step in diagnosing hepatic adenoma?
Ultrasound then CT
What is the treatment of hepatic adenomas?
Watchful wait, unless there is a danger of rupture, pt is symptomatic or it involves most of the liver the surgical resection
Liver lesion that is well-circumscribed with a fibrous capsule and hemorrhagic core
Hepatic adenoma
Which microbe can cause bilateral adrenal calcification and insufficiency?
TB
MCC of adrenal insufficiency
Rapid discontinuation of chronic steroids
What is the gold standard treatment of active TB?
RIPE for 6 months followed by rifampin and isoniazid for another 6 months
What is the diagnostic test for suspected TB?
CXR then sputum acid fast then confirm with sputum culture
What 3 findings could be seen on CXR in a patient with TB and what do they indicate?
Apical cavitary lesions – reactivated TB
Hilar and lower lobe nodes (Ghon) – primary TB
Multiple, fine, nodular densities – miliary TB
What is the treatment for an asymptomatic patient with positive PPD?
Isoniazid for 9 months
What is the BEST treatment for Lyme Disease?
Doxycycline (except in kids <8, pregnant women)
Why shouldn’t doxycycline be used in children?
Causes discolored teeth ad delayed bone growth
What symptoms occur in Stage 1 Lyme Disease?
Fever, rash, chills, fatigue, malaise
What symptoms occur in Stage 2 Lyme Disease? When?
Joint pain, facial nerve palsy, heart block (4-6 weeks)
What symptoms occur in Stage 3 Lyme Disease? When?
Arthritis, synovitis, subacute encephalitis (Months-years)
What is the mechanism of action of doxycycline?
Inhibits Attachment of amino-acyl tRNA and halts translation
What are 4 adverse effects of doxycycline?
GI upset
Photosensitivity
Discolored teeth
Inhibited bone growth
What is the treatment of Lyme Disease in kids?
Amoxicillin if <8 (macrolide if penicillin allergy)
Doxycycline if >8
What is the treatment of advanced or disseminated Lyme disease?
IV ceftriaxone or penicillin for 2-4 weeks
What drug is associated with Gray baby syndrome
Chloramphenicol
What antibiotic is associated with ototoxicity?
Aminoglycosides
What antibiotic is associated with a metallic taste i mouth?
Metronidazole
What is the mechanism of action of heparin?
Binds to and increases activity of anti-thrombin III
What is the mechanism of HIT and when is the onset?
Heparin binds to PF4 and antibodies are generated against heparin-PF4-platelet complexes causing destruction, starts 5-14 days after starting heparin
What is the criteria for diagnosing HIT?
Drop in platelet count >30% within 5-10 days of starting heparin, increased bleeding time with normal PT/PTT
What are symptoms of HIT?
Fever, chills, dyspnea, bleeding, DVT/PE, skin necrosis, stroke
How is HIT treated?
- Stop heparin
- Start direct thrombin inhibitor (argatroban, bivalirudin)
- Transition to warfarin when plts up
For which 4 drugs would you need to monitor the absolute neutrophil count?
Clozapine
Ganciclovir
PTU
Methimazole
What is the pathophysiology of DKA?
Stressor/insulin non-compliance –> hyperglycemia, loss of insulin –> breakdown of fatty acids –> ketogenesis, increased glucagon, GH, E/NE
Diagnostic criteria for DKA
BG >250
PH < 7.3
bicarbonate < 15
Ketonuria or ketonemia
What lab test do you follow during treatment of DKA?
Anion gap
What is the treatment of DKA?
IVF
Insulin + glucose
Replete K and PO4
What are the causes of acute pancreatitis?
PANCREATITIS – posterior perf peptic ulcer, Alcohol, neoplasm, cholelithiasis, renal disease, ERCP, anorexia, trauma, infections, toxins/drugs (thiazides, AZT, protease inhibitors), incineration, stings (scorpion), hypertriglyceridemia
What is a potential finding on KUB in acute pancreatitis?
Sentinel loop – isolated dilated loop of small bowel from nearby inflammation
What finding can be seen on CXR with acute pancreatitis?
Left-sided pleural effusion
What are the Ranson criteria used for?
Determining prognosis of acute pancreatitis
What is the treatment of acute pancreatitis?
IVF
NPO
NG tube decompression
Pain control
What are 6 complications of acute pancreatitis?
ARDS Mediastinal abscess Atelectasis Pleural effusion Pseudocyst Splenic vein thrombosis
What is Goodpasture Syndrome?
Antibodies against GBM and alveolar basement membrane following upper respiratory infection
Fever, cough, hemoptysis, arthralgias, peripheral edema, high blood pressure after a recent upper respiratory infection
Goodpasture’s syndrome
How is the diagnosis of Goodpasture Syndrome made?
- CXR (diffuse opacities)
- Anti-GBM antibodies in blood
- Kidney biopsy showing linear staining on IF
What is the treatment of Goodpasture Syndrome?
- Airway protection
- Plasmapheresis to remove antibodies
- Corticosteroids + cyclophosphamide