Accuracy of Catheter Positioning during Left Subclavian Venous Access: A Randomized Comparison between Radiological and Topographical Landmarks.

Left subclavian venous access increases the risk of vascular damage and thrombosis based on the catheter course and location of the catheter tip. We investigated the accuracy of tip positioning with conventional landmarks using transesophageal echocardiography. The carina as a radiological landmark and the right third intercostal space as a topographical landmark were selected for tip positioning within the target zone, defined as 2 cm above and 1 cm below the right atrial junction.

Hemidiaphragmatic Paresis Following Interscalene Brachial Plexus Block With 2-Point Injection Technique.

Background: An interscalene brachial plexus block is a commonly conducted nerve block for anesthesia and analgesia in shoulder surgery. Due to its proximity to the targeted nerve, the phrenic nerve, which innervates the diaphragm, is typically inadvertently blocked by ventral spread of the local anesthetic. Although hemidiaphragmatic paresis is tolerable in healthy patients, it would be an irreversible risk to patients with compromised lung reserve.

Point of care airway ultrasound to select tracheal tube and determine insertion depth in cleft repair surgery.

We aimed to evaluate the efficacy of using airway ultrasonography to select the correct tracheal tube size and insertion depth in pediatric patients who underwent cleft repair surgery as a way to decrease airway complications and adverse events during perioperative periods. Fifty-one patients (age < 28 months) were consecutively divided into conventional (n = 28) and ultrasound (n = 23) groups. Tracheal tube size and insertion depth were determined using the age-based formula and auscultation in the conventional group, whereas using ultrasonographic measurement of subglottic diameter with auscultation and lung ultrasonography in the ultrasound group.

Controlling Residual Lithium in High-Nickel (>90 %) Lithium Layered Oxides for Cathodes in Lithium-Ion Batteries.

The rampant generation of lithium hydroxide and carbonate impurities, commonly known as residual lithium, is a practical obstacle to the mass-scale synthesis and handling of high-nickel (>90 %) layered oxides and their use as high-energy-density cathodes for lithium-ion batteries. Herein, we suggest a simple in situ method to control the residual lithium chemistry of a high-nickel lithium layered oxide, Li(Ni Co Mn )O (NCM9163), with minimal side effects. Based on thermodynamic considerations of the preferred reactions, we systematically designed a synthesis process that preemptively converts residual Li O (the origin of LiOH and Li CO ) into a more stable compound by injecting reactive SO gas.

The efficacy of pre-warming on reducing intraprocedural hypothermia in endovascular coiling of cerebral aneurysms.

Background: The anesthetic management of patients undergoing endovascular treatment of cerebral aneurysms in the interventional neuroradiology suite can be challenged by hypothermia because of low ambient temperature for operating and maintaining its equipments. We evaluated the efficacy of skin surface warming prior to induction of anesthesia to prevent the decrease in core temperature and reduce the incidence of hypothermia.

Methods: Seventy-two patients were randomized to pre-warmed and control group.

Cardiac arrest associated with carbon dioxide gas embolism during laparoscopic surgery for colorectal cancer and liver metastasis -A case report-.

Clinically apparent carbon dioxide (CO(2)) gas embolism is uncommon, but it may be a potentially lethal complication if it occurs. We describe a 40-year-old woman who suffered a CO(2) gas embolism with cardiac arrest during laparoscopic surgery for colorectal cancer and liver metastasis. Intra-abdominal pressure was controlled to less than 15 mmHg during CO(2) gas pneumoperitoneum.

The efficacy of transforaminal epidural steroid injection by the conventional technique in far-lateral herniation of lumbar disc.

Background: Owing to the anatomical difference between the far lateral herniation of the lumbar disc (FHLD) and the intraspinal herniation of lumbar disc (iHLD), the outcome of transforaminal epidural steroid injections (TFESI) in patients with FHLD seems to be different from that in patients with iHLD. However, few studies have evaluated the efficacy of TFESI in FHLD.

Objective: To evaluate and compare the efficacy of TFESI in FHLD and iHLD patients.

Impact of sex, age and BMI on depth and diameter of the infraclavicular axillary vein when measured by ultrasonography.

Background And Objective: The axillary vein is another option for central venous catheterisation, with less chance of accidental arterial puncture as there is a greater distance between artery and vein, and from vein to rib cage, compared with other sites. Better success, lower complication rates and faster access can be achieved with ultrasound guidance which is becoming the established technique for central venous catheterisation. We measured two key factors for successful infraclavicular axillary venous catheterisation: depth and diameter of the infraclavicular axillary vein in its medial part using ultrasound.

Left atrial appendage thrombus detected by intraoperative transesophageal echocardiography in a patient with acute small bowel infarction -A case report-.

Acute mesenteric ischemia and infarction is an emergent situation associated with high mortality, commonly due to emboli or thrombosis of the mesenteric arteries. Embolism to the mesenteric arteries is most frequently due to a dislodged thrombus from the left atrium, left ventricle, or cardiac valves. We report a case of 70-year-old female patient with an acute small bowel infarction due to a mesenteric artery embolism dislodged from a left atrial appendage detected by intraoperative transesophageal echocardiography and followed by anticoagulation therapy.

Three-dimensional C-arm computed tomography-guided sacroplasty for the treatment of sacral body fracture.

Study Design: Case report.

Objective: To report our results of a sacroplasty technique, using 3-dimensional C-arm CT for the treatment of sacral body fracture.

Summary Of Background Data: Sacroplasty may provide symptomatic relief and hasten recovery in the treatment of sacral insufficiency fractures.

A comparative study on the analgesic effect of continuous intraarticular infusion with ropivacaine, ropivacaine/fentanyl and ropivacaine/fentanyl/ketorolac after arthroscopic shoulder surgery.

Background: Arthroscopic shoulder surgery can result in severe postoperative pain. A variety of methods have been used to control pain in postoperative period and the results are variable. The purpose of this study was to compare the relative analgesic efficacies of the postoperative intraarticular infusion of ropivacaine, ropivacaine/fentanyl, and ropivacaine/fentanyl/ketorolac after arthroscopic shoulder surgery.