Interpret the following ABG results (pH: 7.48 - PaCO2: 42 - HCO3:30):

Correct Answer: D

Rationale: These results indicate metabolic alkalosis with an elevated bicarbonate and normal CO2, showing no respiratory compensation.

Correct Answer: D

Rationale: Severe asthma exacerbations are characterized by symptoms like breathlessness, use of accessory muscles, and mental status changes. A PEF or FEV1 <70% does not necessarily indicate a severe exacerbation.

Correct Answer: C

Rationale: When a preschool child is hospitalized without adequate preparation, they may often react to the hospitalization by regressing. This means that the child may revert back to behaviors that they had previously outgrown, such as bedwetting or wanting a bottle. Hospitalization can be a stressful and overwhelming experience for young children, causing them to seek comfort in familiar behaviors from earlier stages of development. This regression can provide a sense of security and control during a time of uncertainty and unfamiliar circumstances. It is important for parents, caregivers, and healthcare providers to be aware of this potential reaction and provide appropriate support and reassurance to help the child cope with the hospitalization.

Correct Answer: D

Rationale: Night terrors typically occur during non-REM sleep and are more common in young children. They may be associated with sleepwalking (somnambulism) and usually begin in early childhood.

Correct Answer: B

Rationale: Phosgene exposure leads to delayed pulmonary edema and respiratory symptoms.