Figure 1.

Improvement of symptom severity at 4 hours and 12 hours (FAST-1 and FAST-2).⁴⁰

Notes: When completing the visual analog score (VAS), the patient is asked to put a mark on a 100 mm line, according to the severity of each symptom. The left end of the line represents absence of the symptom and the right end of the line represents the most severe symptom imaginable. Distance of the mark along the line gives a measure of symptom severity. Triangles represent FAST-1; quadrilaterals represent FAST-2.