Final answer:
The patient with a blood pressure of 84/54, tachycardia, and a capillary refill time of 4 seconds is likely experiencing hypovolemic shock, a type of circulatory shock requiring prompt treatment with intravenous fluids and potentially vasoactive medications.
Step-by-step explanation:
The patient appears to be in hypovolemic shock, which is a type of circulatory shock caused by an excessive loss of blood volume. This can occur due to hemorrhage, severe vomiting, or diarrhea, especially in children. The clinical presentation, which includes a blood pressure of 84/54, tachycardia, and prolonged capillary refill (greater than 2 seconds), aligns with the symptoms of hypovolemic shock such as a weak pulse, cool and clammy skin, and rapid and shallow breathing.
Treatment includes the administration of intravenous fluids to restore normal function and potential use of vasoactive drugs like dopamine, epinephrine, and norepinephrine to raise blood pressure.