Self Study 3 Flashcards
group of microbes responsible for common cold
rhinovirus parainfluenza respiratory syncytial virus coronavirus adenovirus
MoT common cold
person to person droplet
what population is a major resevoir for common cold
peds
what are the most common portals of entry
nasal mucosa
conjuctival surface of eye
when is the CC most contagious
first 3 days after onset of symptoms
incubation period of the CC
5 days
common mnfts of the CC
headache malaise dryness, stuffiness of nose, nasal sec membranes in URT become swollen with sec sore throat
extreme mnfts of CC
chills, fever, exhaustion
how do yo utreat CC
rest
antipyretics
what is important to remember about the CC and otc drugs
dont shorten cold duration, only tx symptoms
use of antihistamines in CC
for runny nose
what does inc use of antihistamines in the CC result in
drying up sec,
worsening cough
causing CNS depression
how do decongestants work
constrict blood vessels in swollen nasal mucosa, dec swelling and fluid
what do decongestants do in high doses
inc BP
use of echinacea in CC
if taken after onset of symptoms, it may shorten them
zinc and vit C for tx of CC
some studies say it works while others say it doesnt
how is coughing different in cold vs the flu
prod cough in cold
how is stuffy nose different in cold vs flu
no stuffy nose in flu
how do cold symptoms progress vs flu symptoms
cold: over a few days
flu: rapid in 3-6 hours
is headache common in cold
no
which sinuses are included in rhinosinusitis
frontal, ethomoid, maxillary, sphenoidal
what 2 microbes most commonly cause infc in rhinosinusitis
haemophilus influenzae
stretococcus pnuemoniae
mnfts of rihinosinusitis
facial pain headache purulent nasal discharge dec sense of smell fever
dx of rhinosinusitis
hx, px, nose and throat inspection
how is sinusitis headache exxagerated
with bending over, sneezing, coughing
how is RS txed
on cause, may include abx, corticosteroids, mucolytics, symptom releif. inc drainage by dec congestion
when are abx used in RS
if the infection doesnt clear up within 7 days, and presnt inc mnfts
why is it important to be wary of decongestant use
may cause rebound congestion if used >3-5 days
when are intracranial comps most commonly seen in RS
with infc of frontal and ethmoid sinuses dt proximity to the dura + drainage of veins from frontal sinus to dura sinus
orbital complications in RS
edema of eyelids
orbital cellulitis
subperosteal abscess formation
what intercranial complicatiosn req immediate attention
swelling over involved sinus abn extraocular movements protrusion of eyeball periorbital edema changes in mental status
what does dec o2 in the sinuses faciliate
bacterial growth
what are the most common causes of RS
conditions that obstr the osita that drain the sinuses
when does Rs usually dev
when a URT or allergic rhinitis obstrs ostia + compromises mucociliary blanket
what else can cause RS
nasal polyps obstr ostia
