chapter 30: respiratory tract infections Flashcards
in hypoxic drive, __ (CO2/O2) levels must be high in order to stimulate breathing
CO2
why can’t a person with COPD breathe with normal O2 levels?
copd pts have chronically elevated CO2 levels, and the chemoreceptors for CO2 do not respond to the high CO2 levels. therefore their stimulus for oxygen MUST be low (<95%)
fatigue, lethargy, muscle weakness, and acid-base imbalance are __ of lung disorders
s/s
fatigue and lethargy are the result of __ levels
low O2 –> low ATP production
the body compensates for low O2 levels by __ and __
tachycardia (speeding up heart rate); chronic hypoxia (developing secondary polycythemia due to low O2 in the kidneys, which stimulates the release of erythropietin)
__ the volume of inhaled air delivered to the alveoli that receives no blood flow
alveolar dead space
pulmonary embolism, hyperinflation of the alveoli, and decreased cardiac output __ alveolar dead space
increase
anatomical dead space + alveolar dead pace = __
physiologic dead space
in a healthy individual, the anatomic dead space will be __ (greater than/less than/equal to) physiologic dead space
equal to
the common cold, rhinosinusitis, and influenza are __ (lower respiratory/upper respiratory) viruses in adults
upper respiratory
people between the ages of 5 and 40 are susceptible to this virus
rhinovirus
children <3yo are susceptible to this virus
parainfluenza virus
children <3yo in the winter and spring are most susceptible to this virus
respiratory syncytial virus
this virus occurs during the winter and spring and affects any age
coronavirus and adenovirus
__ is an infection or allergy that obstructs sinus drainage (sinus infections)
rhinosinusitis
__ (acute/chronic) rhinosinusitis shows these symptoms:
facial pain
headache
purulent nasal discharge
decreased sense of smell
fever
acute
__ (acute/chronic) rhinosinusitis shows these symptoms:
nasal obstruction
fullness in ears
postnasal drip
hoarseness
chronic cough
loss of taste and smell
unpleasant breath
headache
chronic
influenza is transmitted by __
air or direct contact
__ people die/year due to influenza
36,000
__ is an upper respiratory infection
influenza