Infectious Disease Part 1 Flashcards
Leukocytosis signals what kind of infection
Bacterial
Leukopenia signals what kind of infection
Viral
What phase is thrombocytosis active in acute infection?
Active phase
What are nonspecific acute-phase reactants during acute inflammation?
C-Reactive protein
Pro-inflammatory cytokines
Erythrocyte sedimentation rate
What biomarker is elevated in bacteremia?
Procalcitonin
What diagnostic lab is helpful with a fever of unknown origin (FUO)?
Erythrocyte sedimentation rate
DTaP, Tdap, Polio (IPV), Haemophilus influenzae type B, hepatitis B, human papillomavirus, influenza, meningococcal, and pneumococcal vaccine are all ___ vaccines
Inactive Vaccines
Bacille Calmette-Guerin, MMR, Varicella, Post-exposure prophylaxis for varicella, rotavirus, smallpox are all _____ vaccines
Active Vaccines
Strep, stab, enterococcus, listeria, mycobacteria, pneumococcus, corynebacteria, bacillus, nocardia are all gram-______ aerobic organisms
Gram-Positive
E.coli, pseudomonas, klebsiella, acinetobacter, neisseria, enterobacter, haemophlius infleunza, legionella, salmonella are all gram-______ aerobic organism
Gram-Negative
Bacteroides, fusobacterium, porphyromonas, prevotella are all gram-______ anaerobe organisms
Gram-Negative
Actinomyces, clostridia, peptostreptoccus, and propionibacterium are all gram-_____ anaerobe organisms
Gram-Positive
Most common organism for intra-abdominal infections
Bacteroides
Most common organism for abscesses, wound infections, and pulmonary and intracranial infections
Fusobacterium
Most common organism for aspiration pneumonia and periodontitis
Porphyromonas
Most common organism for intra-abdominal infections and soft-tissue infections
Prevotella
Most common organism for head, neck, abdominal, and pelvic infections and aspiration pneumonia
Actinomycosis
Common causes necrotizing enteritis, botulinum, tetanus, clostrioides difficile-induced diarrhea
Clostridia
Beta Lactam Antimicrobials
Penicillin
Cephalosporins
Monobactams
Carbapenems
Bactericidal
Gram +, Gram = cocci, non-beta-lactamase-producing anaerobes
Penicillin
Antimicrobial used to treat bacterial prophylaxis, UTI, sinusitis, otitis media, and lower respiratory tract infection
Penicillin
Bactericidal
Coverage increases with each generation
Cephalosporins
1st generation is used for surgical prophylaxis
3rd generation is used for meningitis and sepsis
4th generation is used for sepsis and febrile neutropenia
Cephalosporins
Beta-lactam
Treats Gram - only
Monobactams/Aztreonam
Beta-Lactam
Gram +, Gram -, anaerobic
Used to treat mixed aerobic/anaerobic coverage, febrile neutropenia
Carbapenems/meropenem
Gram +, Gram -, Atypical
Limited to anaerobic
Treats UTIs, bacterial diarrhea, soft tissue/bone infections
Fluoroquinolones
What are common fluoroquinolones?
Cipro
Levaquin
Gram + and Gram -
Poor anaerobic
Sulfonamides
What are common sulfonamides?
Bactrim
Sulfa
Gram -
Used for sepsis, endocarditis, UTIs
Aminoglycosides
Gram + anaerobic coverage
Lincosamides/Clindamycin
Gram + (pneumococci, staph, strep)
Gram -
Atypicals (mycoplasma, legionella)
Macrolide/Azithromycin
What is classified as a fever as a neonate (28 days)?
More than 100.4 taken rectally
What are the most common bacterial infections in neonates?
Bacteremia, meningitis, UTI, pneumonia
What is treatment for fever in neonate?
Ampicillin and gentamycin
OR
Ampicillin and cefotaxime/ceftriaxone
What are the most common bacterial organisms for bacteremia, meningitis, UTI, pneumonia in a neonate?
GBS E. Coli Listeria monocytogenes Staph aureus Enterococcus species HSV CMV Varicella-zoster virus RSV Candida species
Fever > 101F/38.3C lasting for at least 8 days and up to 3 weeks with no apparent clinical diagnosis
Fever of Unknown Origin
Bacteremia, meningitis, and UTI
most common differentials for infants 1-3 months of age with fever of unknown origin
What is the common management for infants 1-3 months of age with suspected meningitis?
Ampicillin + Cefotaxmine + Acyclovir
What is the common management for infants >3 months with suspected meningitis?
Vancomycin + Ceftiaxone
Meningitis, pneumonia, toxic shock, urosepsis
Most common differentials for fever of unknown origin in children 3 months to 2 years
Antimicrobial choice for meningitis in children 3 months-2 years
Vancomycin + ceftriaxone
Antimicrobial choice for pneumonia in children 3 months-2 years
Ampicillin/Cefuroxime/ceftriaxone + Clindamycin/Vancomycin