Infectious Disease Flashcards
Clinical Presentation of Acute HIV Infection?
- Mucocutaneous Ulcerations (oral, anal, penis, esophagus)
- Rash after fever
- Adenopathy
- Nausea, Diarrhea, Weight Loss
Clinical Presentation of Chronic HIV Infection?
- Oropharyngeal/Vulvovaginal Candidiasis
- Oral Hairy Leukoplakia
- Seborrheic Dermatitis
AIDS defining maligancies?
- Kaposi sarcoma
- Cervical/ Anal Cancer
- Non-Hodgkin Lymphomas/ CNS Lymphoma (EBV)
Initial test for HIV testing?
HIV 1/2 Immunoassay
detects HIV p24 antigen and HIV antibodies
Most common antibiotics that cause C. difficle? (4)
- Clindamycin
- Cephalosporins
- Ciprofloxacin
- Co-amoxiclav (Augmentin/Amoxicillin+Clavulanate)
Another pharmacologic group that causes C. difficle?
Gastric acid suppressors
- PPIs
- H2 receptor inhibitors
Clinical Presentation of C. Difficle?
- Watery Diarrhea
- Lower abdominal Pain
- Fever
- Leukocytosis
Criteria for Systemic Inflammatory Response Syndrome?
- HR > 90
- Hypo or Hyperthermia
- High or Low WBCs
- Tachypnea
Risk factors for Sepsis:
- Bacteremia
- Advanced age
- Diabetes
- Cancer
- Immunosuppression
What is the differentiation separates Septic Shock from Sepsis?
Septic Shock requires Hypotension that is refractory to fluid resuscitation
Laboratory Findings of Sepsis?
- Elevated Lactic Acid
- Increased BUN/Cr Ratio
- Elevated Liver Enzymes
- Leukocytosis or Leukopenia
Important Diagnostic Tests for Sepsis?
Blood, Urine, Sputum cultures
Most common pathogens in Nosocomial Sepsis? And Treatment
- MRSA (Vancomycin, Linezolid)
- Pseudomonas (Piperacillin-Tazobactam)
- E. coli (Ciprofloxacin)
Treatment for Sepsis?
- Broad Spetrum Antibiotics
- IV Fluids
- Pressors (Norepinephrine)
Common Pathogens for UTI?
SSEEK PP
- S. Saprophyticus (young sexually active women)
- Serratiamarcescens(red pigment)
- E. coli(most common) &Enterococci
- Enterobacter cloacae
- Klebsiella pneumonia
- Proteus mirabilis(urine smells like ammonia)
- Pseudomonas aeruginosa(blue-green pigment, usually nosocomial)
Clinical Presentation of UTIs?
- Frequency
- Dysuria
- Urgency
- Suprapubic Pain
When is a urine culture/analysis indicated in women?
- Complicated Cystitis
- Pyelonephritis
- Pregnancy
Urinalysis results for a patient with a UTI?
- Elevated Nitrites
- Increased Leukocyte Esterase
- WBCs
Complications of a UTI (cystitis)?
- Pyelonephritis
- Renal Failure
- Abscesses
- Sepsis
Treatment for Uncomplicated Cystitis?
- TMP-SMX (3 days)
- Nitrofurantoin (5 days)
- Fosfomycin (single dose)
Treatment for Complicated Cystitis?
Flouroquinolones
Treatment for Asymptomatic Bacteremia or Cystitis in Pregnant Women?
- Nitrofurantoin
- Cephalexin
- Amoxicillin-clavulanic acid
- Fosfomycin
Pathogens of Pyelonephritis?
- E. coli*
- Klebsiella
- S. saprophyticus
- Proteus
- Candida
Clinical Presentation of Pyelonephritis?
- Flank pain
- Costovertebral tenderness
- Urinary symptoms (frequency, dysuria, urgency)
- Chills
- Nausea, vomiting
- Fever
Urine Analysis Findings in Pyelonephritis?
- WBC Casts
- 100,000 colony units
Other Lab Findings in Pyelonephritis?
- Elevated ESR and C-reactive Protein
- Elevated WBCs
Complications of Pyelonephritis in Pregnant Women?
- Premature Labor
- Low birth weight
Treatment of Pyelonephritis?
1-2 days of the following:
- IV Flouroquinolones
- IV Aminoglycosides
- IV Cephalosporins
- Oral Antibiotics
2-3 weeks in complicated Pyelonephritis
Layers of the skin affected in Cellulitis vs. Erysipleas?
Cellulitis: Deeper dermis & subcutaneous fat
Erysipleas: Upper dermis & superficial lymphatics
Clinical Presentation of cellulitis or erysipelas?
- Erythema
- Edema
- Warmth
Distinguishing feature of erysipleas from cellulitis?
Erysipleas has a well-demarcated edge that is raised compared to the surrounding skin.
Treatment of Cellulitis?
- Clindamycin
- Amoxicillin plus TMP-SMX
- Amoxicillin plus tetracycline
Treatment of Erysipleas with systemic symptoms (fever, chills)? Without?
With systemic symptoms:
- IV Ceftriaxone, Cefazolon
Without Systemic symptoms:
- Oral Penicillin/Amoxicillin
Lymphogranuloma venerum is caused by which pathogen?
C. trachomatis
Clinical Presentation of the first stage of Lymphogranuloma venerum?
- Malaise
- Headache
- Fever
- Papule formation at contact site that transforms to a painless ulcer, healing after a few days
Clinical Presentation of the Second Stage of Lymphogranuloma venerum?
Inguinal buboes (enlarged, painful lymph nodes)
Clinical Presentation of the Third Stage of Lymphogranuloma venerum?
- Proctocolitis
- Rectal stricture
- Rectovaginal fistula
- Elephantiasis (swelling due to lymphatic obstruction)
Treatment for Lymphogranuloma venerum?
- Doxycycline
- Azithromycin
- Erythromycin
Granuloma inguinale is caused by which pathogen?
Klebsiella granulomatis
Clinical Presentation of Granuloma inguinale?
Genital nodule that turns into painless, friable ulcer (with beefy red base and irregular borders)
Diagnositic test for Granuloma inguinale?
Ulcer biopsy positive for Donovan bodies (red encapsulated intracellular bodies)