Figure 1. Baseline and post-procedure VAS scores for patients treated by intravenous regional blockade with phenoxybenzamine. Early follow-up evaluation times were at 6, 8, 11, 27, and 11 days after the procedure for patients 1, 2, 3, 4, and 5, respectively. The latest follow-up evaluations were at 17, 7, 5, 9, and 7 months for patients 1, 2, 3, 4, and 5, respectively.