A pregnant woman experiencing nausea and vomiting should:.

Choice A rationale:
Inspiratory stridor. Inspiratory stridor, a high-pitched sound heard during inhalation, is a common symptom of acute epiglottitis. It is caused by the swelling and inflammation of the epiglottis, which can partially obstruct the airway and create a stridor sound during breathing.
Choice B rationale:
Complete obstruction. Using a tongue depressor to examine the throat of a child with acute epiglottitis can potentially lead to a complete airway obstruction. The epiglottis, which is already swollen, can block the airway entirely, leading to respiratory distress and potentially a life-threatening situation.
Choice C rationale:
Sore throat. A sore throat is a common symptom of various respiratory tract infections, including acute epiglottitis. However, the use of a tongue depressor can worsen the swelling and potentially lead to complete airway obstruction, which is a more immediate concern.
Choice D rationale:
Respiratory tract infection. Acute epiglottitis itself is a severe respiratory tract infection, specifically involving the epiglottis. Using a tongue depressor might exacerbate the condition, leading to airway obstruction, but it is not the cause of the respiratory tract infection.

Choice A rationale:
Fever as high as 40° C (104° F). Fever is not typically a common sign or symptom of chronic otitis media with effusion (OME). Chronic OME is characterized by the presence of fluid in the middle ear without signs of acute infection. While fever might occur in acute otitis media, it is not a typical feature of chronic OME.
Choice B rationale:
Severe pain in the ear. Severe pain in the ear is more commonly associated with acute otitis media rather than chronic otitis media with effusion. Chronic OME usually presents with a sensation of fullness or hearing loss in the affected ear due to the accumulation of fluid in the middle ear, but it does not cause severe ear pain.
Choice C rationale:
Nausea and vomiting. Nausea and vomiting are not typical signs or symptoms of chronic otitis media with effusion. These symptoms are more likely to occur in conditions affecting the inner ear or vestibular system, not in chronic OME.
Choice D rationale:
A feeling of fullness in the ear. A feeling of fullness in the ear is a common sign of chronic otitis media with effusion. The accumulation of fluid in the middle ear can cause a sense of fullness or pressure in the affected ear. This sensation might be accompanied by mild hearing loss.