Final answer:
During the subacute phase of Kawasaki disease, coronary artery aneurysms and thrombocytosis are potential complications. Hypertension and ARDS, while serious, are not typically associated with this phase of Kawasaki disease.
Step-by-step explanation:
The subacute phase of Kawasaki disease, which typically occurs after the initial acute phase of the illness, is marked by certain clinical signs and possible complications. During this phase, children may develop coronary artery aneurysms, which are balloon-like dilations of the coronary arteries that can lead to serious heart problems. Thrombocytosis, an elevated platelet count, is another concern during this phase, as it can increase the risk of blood clots. While not typically associated with Kawasaki disease, other conditions like hypertension (high blood pressure) or acute respiratory distress syndrome (ARDS) can occur in other contexts of health and are serious concerns that require immediate medical attention.