Causative agent of common cold
rhinovirus or coronavirus
pathophysiology of rhinovirus
enters into the body through mucosal surface like nasal cavity or eye
incubating period <2 days
peaks in 2-4 days
How long can rhinovirus remain clinically relevant on a dry innate surface?
2 hours-7 days
Cold symptoms
nasal congestion, rhinorrhea, mild fever, weakness
cold symptom duration
peaks on day 3-4 resolve within 7 days
What symptoms differentiate cold and flu?
symptom onset- flu = abrupt, cold= gradual
fever- flu= usual cold= rare
aches- flu = usual, cold= slight
Potential complications of a cold in children
sinusitis
middle ear infection
bronchitis
pneumonia
exacerbation of asthma
Possible treatment option classes for cold
non-drug
-nasal strips
-saline nasal flush
-handwashing
decongestants
-topical
-systemic
counterirritants
anesthetics
dietary supplements
Nonpharmacologic recommendations to treat cold
rest
hdyration
humidified air
saline nasal spray
sugar alcohol nasal spray
What is the mechanism of activation for decongestants
constricts baked vessels via stimulation of alpha adrenergic receptors
vasoconstriction = decreased congestion
Duration of action for nasal phenylephrine
<4 hours
duration of action for nasal naphazoline
2-6 hours
duration of action for nasal tetrahydrozoline
2-6 hours
duration of action for nasal oxymetazoline
<12 hours
duration of action for nasal xylometazoline
<12 hours
Afrin active ingredient
oxymetazoline hydrocholride
warnings/precautions for Afrin
heart disease
high bp
thyroid disease
diabetes
enlarged prostate
Afrin drug interactions
non selective beta blockers
MAO- inhibitors
tricyclic antidepressants
all due to increasing bp
Afrin dosing in adults and children, include age restrictions
12+ 2-3 sprays in each nostril every 10-12 hours
Afrin dosing maximum days
3-5 days
Afrin over use side effect
rhinitis medicamentosa (rebound congestion)
Privine active ingredient
naphazoline
Privine dosing schedule
12+ 1-2 drops every 6 hours
4-way active ingredient
phenylephrine