Fig. 4From: Intrathecal chloroprocaine or hyperbaric prilocaine for ambulatory knee surgery? A prospective randomized studya Percentage of patients with a complete loss of cold sensation at T4 dermatome level during the first 30 min after local anesthetics injection. b Percentage of patients with negative pin-prick test at the T4 dermatome level during the first 30 min after local anesthetics injection. Statistically significant differences are marked with *(P < 0.05)Back to article page