The leading cause of lower respiratory tract infections in infants and
young children is:
human metapneumovirus.
respiratory syncytial virus.
adenovirus.
parainfluenza virus. - ✔ ✔ respiratory syncytial virus.
Mucus production resulting from hyperplasia of the mucous
membranes lining the bronchial wall describes:
asthma.
chronic bronchitis.
cystic fibrosis.
,pneumonia. - ✔ ✔ chronic bronchitis.
A hallmark sign of chronic bronchitis is chronic mucus production
resulting from hyperplasia of the mucous membranes lining the
bronchial walls. This causes irreversible and progressive airway
disease.
A 14-year-old boy reports cough and chest tightness during exercise.
He is most likely experiencing:
bronchostenosis.
airway wall remodeling.
airway obstruction.
bronchospasm. - ✔ ✔ bronchospasm.
,Which one of the following symptoms is common in a patient who has
asthma?
Inspiratory wheeze
Nonproductive cough
Tachycardia
Hyperresonance - ✔ ✔ Nonproductive cough
A nonproductive cough is typically the earliest symptom of asthma.
A 2-year-old girl is evaluated for a barking cough. The NP suspects
that this cough is a result of:
subglottic edema.
retropharyngeal abscess.
tracheal deviation.
, bronchospasm. - ✔ ✔ subglottic edema.
Croup produces a barking cough secondary to laryngeal obstruction
and caused by subglottic edema. Narrowing of the subglottic region of
the larynx also causes inspiratory stridor and hoarseness that worsens
at night. Symptoms usually resolve in 3-7 days.
Tuberculosis is caused by Mycobacterium tuberculosis, which is
transmitted via:
contact with an infected surface.
blood.
respiratory droplet.
any bodily fluid. - ✔ ✔ respiratory droplet.
The most common cause of croup is: