BACKGROUND Magnesium is a physiologic cation that blocks neuromuscular transmission and does not allow the nerve to be stimulated. OBJECTIVES This study investigates the effect of adding magnesium sulfate to lidocaine to extend the duration of sensory and motor blocks of the axillary plexus in orthopedic surgeries of the upper extremities. PATIENTS AND METHODS This controlled randomized dou...

BACKGROUND This prospective, randomized, blinded study tested the hypothesis that ultrasound guidance can shorten the onset time of axillary brachial plexus block as compared with nerve stimulation guidance when using a multiple injection technique. METHODS Sixty American Society of Anesthesiology physical status I-III patients receiving axillary brachial plexus block with 20 ml ropivacaine, ...

INTRODUCTION The aim of this study was to compare the effectiveness of Twin-block and Dynamax appliances for the treatment of Class II Division 1 malocclusion. METHODS This was a randomized controlled trial involving 32 boys and 32 girls aged 10 to 14 years with Class II Division 1 malocclusion. They were randomly allocated to either the Dynamax appliance group or the Twin-block appliance gro...

OBJECTIVE The objective of the study was to determine whether transversus abdominis plane (TAP) block reduces postoperative pain when compared with trocar site infiltration of bupivacaine in gynecological laparoscopy. STUDY DESIGN This was a prospective, randomized, double-blinded clinical trial using patients as their own controls. Women undergoing gynecologic laparoscopy using a 4-port symm...

14. Fisch C, Zipes DP, McHenry PL: Rate dependent aberrancy. Circulation 48: 714, 1973 15. Denes P, Wu D, Dhingra RC, Amat-y-Leon F, Wyndham C, Rosen KM: Electrophysiological observations in patients with rate dependent bundle branch block. Circulation 51: 244, 1975 16. Wu D, Denes P, Dhingra R, Rosen KM: Bundle branch block. Demonstration of the incomplete nature of some "complete" bundle bran...

JR.: Indications for and results of implanting cardiac pacemakers, Amer. J. Med., 37:764, 1964. 15 CENTER, S., NATHAN, D., WU, C.Y., AND DUCNE, D.: Two years of clinical experience with the synchronous pacer, I. Thorac. and Cardiovas. Surg., 48:513, 1964. 16 CHARDACK, W.M., GAGE, A.A., FEDERICO, A.J., SCHIMERT, G., AND GREATBATCH, W.: Five years clinical experience with an implantable pacemaker...

Complexation characteristics of 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6, 18C6) with Li+ and K+ in a hydrophobic ionic liquid of 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide under dry and humid conditions at 298.2 K were studied by 1H and 13C NMR chemical shifts. The comparison of the 1H and 13C chemical shifts of 18C6 molecule between the dry and humid IL solutions w...