Background: Intravenous regional anesthesia (IVRA) is an efficient method for short-term procedures of the upper extremities. Some defects are associated with IVRA including tourniquet-related pain and insufficient duration of the anesthesia. The main purpose of the current study was to compare the effects of adding paracetamol or magnesium sulfate to lidocaine in IVRA on pain, venous blood gas...

Background and purpose: Lidocaine is an intermediate acting local anesthetic agents used very much in epidural anesthesia and has less risk of cardiac or CNS problems compared with bupivacaine. This study evaluated the duration of motor and sensory block of epidural anesthesia with lidocaine alone, lidocoine plus epinephrine and lidocaine plus fentanyl. Materials and Methods: In this doubl...

Introduction: Spinal anesthesia in opium-addicted patients can be associated with many complications. Hence, this study aimed to investigate sensory and motor block characteristics, duration of postoperative analgesia, hemodynamic and side effects by adding Fentanyl to bupivacaine in spinal Anesthesia of opium-addicted patients. Methods: In a double-blind randomized clinical trial, 60 American...

Background and purpose: Spinal anesthesia is commonly used in transurethral resection of the prostate (TURP). To reduce the complications of spinal anesthesia, opioids could be helpful in decreasing the amount of anesthetic drug. The aim of this study was to evaluate the effect of low doses of bupivacaine and fentanyl on the levels of sensory block and motor block. Materials and methods: A cli...

Aim and Background: Nerve stimulator and Sonography are both used for nerve localization and block, either alone or in combination. This study compares these methods regarding the speed of onset and quality of brachial pleuxus block in Supraclavicular area. Methods and Materials: In this double blind clinical trial, 30 patients with upper extremity fracture were recruited. They were divided in...

In the structure of direct vector control of an induction motor, there are three main sections that have important role in improvement of the induction motor drive operation. This three sections, including: 1- the estimation block of the feedback signals, 2- the block of the  required PWM pulses generation for the inverter unit, and 3- control blocks (usually PI) for generating the require...