title: Subcutaneous single injection digital block with epinephrine.
abstract: The aim of this study was to investigate the anesthetic effect and risk of epinephrine for subcutaneous single injection digital block. Either 3.0 mL 1.0% Lidocaine or a 3.0 mL 1.0% Lidocaine with (1 : 100,000) epinephrine was injected into the subcutaneous space at the middle point of the palmar digital crease of the 18 middle fingers of 9 healthy volunteers. The SpO(2) of the fingers decreased to a maximum of 97. No subjects showed any symptoms of ischemic injury. The time to anesthesia for the fingers was significantly shorter (P < 0.05), and the duration of anesthesia was significantly longer (P < 0.01) for the fingers in the epinephrine group. In conclusion, a subcutaneous single injection digital blocks with 3.0 mL of 1.0% Lidocaine and (1 : 100,000) epinephrine were safe, reducing the time to the onset of anesthesia, while also markedly prolonging the anesthesia.
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga-shi, Saga 849-8501, Japan.
authors.forename: Motoki
authors.initials: M
authors.lastname: Sonohata
authors.forename: Satomi
authors.initials: S
authors.lastname: Nagamine
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Maeda
authors.forename: Kenji
authors.initials: K
authors.lastname: Ogawa
authors.forename: Hideki
authors.initials: H
authors.lastname: Ishii
authors.forename: Kenji
authors.initials: K
authors.lastname: Tsunoda
authors.forename: Akihiko
authors.initials: A
authors.lastname: Asami
authors.forename: Masaaki
authors.initials: M
authors.lastname: Mawatari