Payengcha Flashcards
Bacterial Disease
keratin
waterproof protein that is found in epitheal cells
Epidermis
outer layer of skin nourished by diffusion and renewed every 15-30 days
microflora
on skin surface that makes it hard for colonization of pathogens
acidic skin pH
normal skin is acidic and this helps discourage pathogenic growth of bacteria
sweat
from sudoriferous glands. Contributes to organic substances and salts that lowers the skins pH and increase salinity which inhibits the growth of some pathogens especially in armpit and groin
sebaceous gland
produce oil (sebum) made up of organic acids and lipids
staphylococcus aureus
causes pimples, sty, abscess, boils, carbuncle
scalded skin syndrome
caused by exfoliantins: exotoxins produced by S. aureus. Most common in infants and can produce high fever and bacterium even death.
scarlet fever
caused by S. pyogenes- a strain that has been infected by a temperate phage that allows them to produce erythrogenic toxin (scarlet rash)
pyoderma
pus producing infection caused by staph, strept or corynebacteria
Impetigo
a pyoderma extremely contagious common in infants
acne lesions
caused by S. aureus and Propionibacterium (the more serious acne causing bacteria)
Eschar
dead crusty scab that forms over burns and can seal in deadly infection caused by burns. DEBRIDEMENT is treatment
nosocomial infections
infections picked up from being in hospital
burn infection
caused by Pseudomonas aeurginosa, serriata marcescen and providentia species
UTI
most common of all infections and is seen mostly in females and older women due to incomplete emptying of bladder
E. coli
causative agent in 80% of cases of UTI due to wiping back to front
Prostatits
inflammation of the prostate also 80% caused by E.coli and can lead to sterility
Pyelonephritis
when UTI spreads to the nephron tubes of the kidney and causes a kidney infection. often requires antibiotics
glomerulonephritis
immune complex disease that sometimes follow streptococcal or viral infections. may result in permanent residual kidney damage.
leptosporosis
caused by spirochete Leptopspira interrogens. Contracted when humans come into contact with contaminated urine from rats, dogs, cats
toxic shock syndrome
caused by S. aureus occurs with abrasive tampons left in too long.
gonorrhea
caused by intracellular diplococci and usually remains asymptomatic
syphilis
caused by spirochete treponema pallidum transfered by sti but can be passed by saliva. develop lesions on hands and lips as well as genitals.
congenital syphilis
occurs when spirochete crosses from mom to baby
chlamydia trachomatis
most common STI in the US. can be asymptomatic, cause sterility and blindness in newborns
Healthy lower respiratory tract
sterile
mucocilary escalator
cilia that help move microbes up and out of your lungs
upper respiratory tract
contains 400 species of normal micro flora which include staph epidermis, corynebacteria and staph. aureus
pharyngitis
streptococcus sore throat
laryngitis
haemophilus influenzae caused by strept pneumoniae
epiglottitis
block airway and cause death
sinusitis
caused by S. pneumoniae, H. influenze, S. aureus, S. pyogenes with 5-10% caused by dental orgins
bronchitis
caused by S. pneumoniae, mycoplasma pneumoniae, haemophilus, strept and staph
Inflammation of the bronchi but does not extend to the alveoli. about 15% have chronic
pneumonia
bronchitis spread to the lung
diptheria
caused by corynebacterium dipthereial that has an exotoxin gene. FORMS pseudomembranes that can block airway.
whooping cough (pertussis)
caused by bordetella pertussis and is called Kennel cough in dogs. Preventable by vaccination. Has 4 stages.
Catarrhal Stage (Stage 1 of pertussis)
fever, sneezing, vomiting, cough
Paroxysmal Stage ( Stage 2 of pertussis)
mucus and bacteria build up, violent bacteria
Cyanosis Stage (Stage 3 of pertussis)
bluing of skin due to lack of oxygen
Convalescent Stage ( Stage 4 of pertussis)
happens in 1-6 wks
Pneumonia
1 leading cause of death due to infectious disease in the US.
Lobar
affects lobe of lungs (S. pneumoniae causes about 95% of cases)
Bronchial
begins in bronchi and spreads towards alveoli often a secondary infection that affect newborns and elderly
walking pneumonia (mycoplasma pneumoniae)
no cell wall, unique shape, slow growing
Legionnaries Disease
caused by Legionella pneumohia. can spread through air condition vents, water supply if bacteria infect amoeba in present water. Named due to outbreak in 1976 at a convention of war veterans in PA that led to 29 deaths.
Tuberculosis
caused by a variety of mycobacterium species
M. avium intracellulare complex
most prevalent TB causative bacteria in HIV patients
Caseous necrosis
cream cheese center of granulomas
miliary tuberculosis
when TB spreads to other organs
Peyer patch
protects small intestines from infection
large intestines
main job is to reabsorb water and vitamin K is an important byproduct
last 1/3 of small intestines
facultative and obligate anaerobes
caries
tooth decay due to acidic waste from bacteria of plauge
asiatic cholera
caused by vibrio cholerae spread by fecal contamination in water supply
traveler’s diarrhea (Dheli Belly, Montezuma’s revenge)
caused by pathogenic strains of E. coli and effects travelers exposed to new strain with geographical regions
enterohemorrhagic strain of E. coli
0157:H7 food posioning
Helicobacter pylori
peptic ulcer and chronic gastritis treated with antibiotics
C. Diff
clostridium difficle (bad diarreha) very common often due to long term high does of antibiotics that destroy normal flora
Bacterial Meningitdis
inflammation of the meninges caused by several bacteria
Neisseria meningitidis
causes 2-3k deaths a year occurs within 12-48 hrs
Haemophilus Meningitis
caused by haemophilus influenza type B (hib) most common among children
there is a vaccine
Listeriosis
meningitis caused by Listeria monocytogenes, gram + bacillus. transmitted by improperly processed milk, cheese, meat and can pass from mom to baby through placenta
Hansen’s Disease (Leprosy)
caused by Mycobacterium leprae
tuberculoid
loss of skin pigment and sensation in leprosy
lepromatos
causes large disfiguring skin lesions called lepromas in Leprosy
Tetanus
caused by clostridium tetani it is obligate anaerobe, gram+, spore forming (deep cut like stepping on a nail)
Tetanus neonatorum
tetanus spread through raw stump of an umbilical cord by contaminated knife after baby is born
Botulism
most potent toxin known 1oz. can kill the whole US. Obligate anaerobe. Caused by clostridium botuilnium occurs in 3 forms: food borne, infant and wound
Food Borne
90% of Botulism
infant boutulism
feed honey to infants through pacifier
wound
occurs in very deep wound where conditions are favorable