IMPLICATIONS: Under normoxic conditions and in clinically relevant concentrations, ketamine and etomidate had no effect on action potential variables of guinea pig ventricular myocardium. In contrast, during simulated ischemia and reperfusion, ketamine, but not etomidate, decreased ischemia-induced action potential shortening and dispersion as well as reperfusion-induced ventricular arrhythmias.
IMPLICATIONS: Propofol leads to modulation of markers of systemic inflammation after ischemia-reperfusion injury in experimental abdominal aortic surgery compared with propofol.
IMPLICATIONS: In 300 adults undergoing lung or esophageal surgery requiring one-lung isolation, the use of a 35 FR left-sided double-lumen tube, regardless of gender or height, was associated with a similar incidence of hypoxemia and one-lung isolation failure as with use of conventional sizing.
IMPLICATIONS: Potassium channels are important for anesthetic-induced preconditioning. Here we demonstrate that mitochondrial large-conductance calcium-activated K+ channels mediate desflurane-induced preconditioning, and that activation of these channels by desflurane is mediated by protein kinase.
IMPLICATIONS: A patient with heparin-induced thrombocytopenia who required repeat implantation of a left ventricular assist device underwent cardiopulmonary bypass with bivalirudin for anticoagulation. Profuse bleeding after surgery was treated with massive transfusion therapy, recombinant factor VIIa, and was complicated by an acute left atrial thrombus.
IMPLICATIONS: Compared with a standard weight-based heparin management protocol monitored solely by activated clotting time values, heparin management in infants <6-mo-of-age monitored by Hepcon heparin management system plus-calculated heparin concentrations led to a significant reduction in thrombin generation and a significant preservation of factor VIII levels.
IMPLICATIONS: Bispectral index and midlatency auditory evoked potentials could be used in healthy children younger than 2-yr-of-age during wakefulness and natural sleep, though they show poor agreement with clinical assessments.
IMPLICATIONS: The combination of propofol and remifentanil significantly reduces the time required for sedation and recovery to ambulation in patients undergoing colonoscopy when compared with midazolam and fentanyl given via patient-controlled sedation (PCS). Respiratory depression requiring anesthesiologist intervention was seen in 8% of patients. When combined with anesthesiologist rescue, PCS propofol and remifentanil can markedly improve throughput in colonoscopy.
IMPLICATIONS: This study demonstrates that a brief period of hypnosis is effective in controlling presurgical distress in women awaiting diagnostic breast cancer surgery. Thus, study adds to the body of literature demonstrating the utility of alternative medicine strategies in enhancing the perioperative experience of patients.
IMPLICATIONS: Using a cadaver model to assess the performance of seven supraglottic airway devices, protection against aspiration can be achieved either by a tight esophageal seal, as was obtained with the Intubating Laryngeal Mask Airway, the Easytube, and the Combitube, or with an esophageal lumen to direct regurgitated fluid out of the mouth.
IMPLICATIONS: Few in the field of anesthesiology appreciate the sheer magnitude of Dr. Janssen's numerous contributions to various fields in human, botanical, and veterinary medicine. From the invention and development of over 80 pharmaceutical compounds to his monumental merger of Janssen Pharmacuetica with Johnson and Johnson, Dr. Paul Janssen truly embodies what it means to be a productive scientist and an entrepreneur extraordinaire.
IMPLICATIONS: Noroxymorphone is a promising opioid for spinal analgesia with a significantly longer lasting antinociceptive effect compared with oxycodone and morphine after intrathecal administration in rats. Its safety for spinal administration should be assessed before clinical use.
IMPLICATIONS: We explored the use of remifentanil-propofol response surface interaction models to predict loss and return of responsiveness, presence or absence of a response to laryngoscopy and pain after surgery. The interaction models predicted responses to selected pertinent events in patients undergoing a propofol-remifentanil-based anesthetic for surgery. Significant model error was evident during rapid changes in predicted effect-site propofol-remifentanil concentration pairs.
IMPLICATIONS: Instead of aggravating the inflammatory response secondary to histamine release, morphine sulfate actually provides protection to the microvasculature by attenuating the phosphoinositol/MAP kinase cascade via protein kinase A.
IMPLICATIONS: Isocapnic hyperpnoea accelerates recovery from sevoflurane anesthesia and shortens operating room and postanesthetic care unit stay.
IMPLICATIONS: Mutations in presenilin-1 are a common genetic cause of familial Alzheimer's disease. We found that PC12 cells transfected with mutated presenilin-1 were vulnerable to isoflurane-induced cytotoxicity, and demonstrated higher calcium release from the endoplasmic reticulum IP3 receptors than observed in wild type cells. Sevoflurane and desflurane at equipotent exposure induced neither cytotoxicity nor changes in intracellular calcium. Patients with familial Alzheimer's disease may be more vulnerable to isoflurane neurotoxicity than normal individuals.
IMPLICATIONS: Clinicians have difficulty learning the recommended IEC 60601-1-8 melodic alarms for medical electrical equipment and persistently confuse certain pairs of alarms. Redesign and formal testing with representative users is needed.
IMPLICATIONS: A novel system, comprising of an airway bymixer, fast response temperature and humidity sensor, flowmeter, and nonrebreathing valve, can conveniently measure airway Vo2 and Vco2 during spontaneous breathing in awake patients.
IMPLICATIONS: Cutaneous reactions to epidural catheter placement are rare, and usually related to the antiseptic solutions. Proper assessment and treatment is the key to avoiding serious complications.
IMPLICATIONS: Based on this case report, intracerebroventricular etomidate appears to produce anesthetic effects similar to those in the rat model, as evidenced by excellent conditions for direct laryngoscopy and endotracheal intubation. The long-term effects of intracerebroventricular rocuronium and etomidate cannot be predicted.
IMPLICATIONS: In critically ill nonimmunosuppressed patients, candidemia caused by non-albicans species, which is associated with higher mortality, was more likely to occur in patients with medical devices or receiving steroids.
IMPLICATIONS: Estimates of changes in regional lung perfusion may be obtained using transesophageal echocardiography.
IMPLICATIONS: The Smart Bag(R) MO, a bag-valve device with a built-in, flow-limiting safety feature decreasing maximum inspiratory gas flow, was developed to decrease the risk of stomach inflation in the unprotected airway. The use of the flow-limiting feature in short ventilation pauses, e.g., during cardiopulmonary resuscitation with uninterrupted chest compressions, may result in hypoventilation.
IMPLICATIONS: This study compared the lumbar interspinous space estimated by palpation during obstetric neuraxial anesthesia to that estimated by ultrasound examination. There was poor agreement between the two methods, and when there was disagreement, the ultrasound estimate was more often higher than the palpitation estimate.
IMPLICATIONS: The EpisureTM AutoDetectTM syringe, a spring-loaded syringe, was compared with the glass syringe for identification of the epidural space in 325 parturients. There was no failed epidural analgesia and no inadvertent dural punctures with the AutoDetect syringe.
IMPLICATIONS: Two types of agreements between hospitals and anesthesia groups for institutional support are shown to be rational. When such agreements are negotiated, the potential impact on incentives for improving OR management should be considered.
IMPLICATIONS: Distributed video displays with degraded images are accepted and used by operating room (OR) staff in all job categories. Tests of such systems in a 6-OR trauma suite and a 19-OR general suite demonstrated that staff used them regularly and extensively even when real-time OR occupancy status was available continually at the sites of video displays.
IMPLICATIONS: A surgeon's preference for peripheral nerve block for him or herself strongly predicted his or her preference for patients (concordance >= 87%). There was no additional predictive value for the surgeon's patients in knowing the surgeon's perception of the incremental time to perform a block or the rate of successful blocks.
IMPLICATIONS: Learning curves and mathematical models were constructed for the acquisition of ultrasound-related skills: optimizing needle-beam alignment and reaching a target inside a phantom. Subjects became proficient at variable rates, as assessed by the cumulative sum method. Mathematical models predicted the average numbers of trials to attain 95% success rates.
IMPLICATIONS: Anesthesia providers' perceptions of the safety climate of operating rooms varied substantially among hospital anesthesia groups. Simulation-based anesthesia crisis resource management training showed no benefit to affecting safety climate in this group randomized trial.
IMPLICATIONS: This multicenter randomized crossover trial in 265 adult patients with supratentorial brain tumors demonstrated that intraoperative hyperventilation decreases intracranial pressure and improves surgeon-assessed brain bulk.
IMPLICATIONS: This study demonstrates that volume challenges can persistently improve the perfusion of the brain, gut, and kidney in the postoperative period, even under hemodynamically stable conditions. This may result in clinical benefit if organ function is impaired after surgery.
IMPLICATIONS: The peer-reviewed literature suggests that acupuncture and related forms of acustimulation provide temporary pain relief in patients with a wide variety of acute and chronic pain syndromes. There is minimal evidence, however, that these nonpharmacologic treatments provide longer-term benefits unless the treatments are administered on a continuing basis.
IMPLICATIONS: Tramadol used as a sole drug after moderately painful surgery is effective in 80% of patients when the administered dose is 260 mg, significantly higher than the manufacturer-recommended dose.
IMPLICATIONS: This study of the safety and tolerability of ziconotide suggests that the drug is a reasonable long-term treatment option for patients with severe chronic pain.
IMPLICATIONS: Transforaminal and parasagittal interlaminar epidural steroid injections are methods of placing medication into the anterior epidural space to provide analgesia for inflammatory conditions of the lumbar spine. In this study, the parasagittal interlaminar technique was more reliable in placing dye in the ventral epidural space, and did so in less time, than the transforaminal technique. Outcomes were similar between the two groups of patients.
IMPLICATIONS: The authors report a case of opioid-induced hyperalgesia in a patient receiving IV morphine with chronic neuropathic pain, and the favorable response to opioid detoxification.
IMPLICATIONS: In a study of modest size (20 patients), radiofrequency lumbar sympathectomy appears to be comparable to phenol lumbar sympathectomy for the treatment of type 1 complex regional pain syndrome.
IMPLICATIONS: Pentoxifylline did not show therapeutic action in a rodent model of neuropathic pain when applied after nerve injury. As previous research has suggested efficacy when applied before nerve injury, the authors conclude that pentoxifylline should be prescribed to patients in the early stage of diseases that pose a risk for the development of neuropathic pain.
IMPLICATIONS: The number of occluded mid-thoracic interlaminar spaces and the incidence of supraspinous ligament ossification observed in preoperative three-dimensional computed tomography images correlates with difficult thoracic epidural punctures. This suggests that anatomical information obtained by three-dimensional computed tomography imaging techniques may be useful in evaluating difficult thoracic epidural needle placement.
IMPLICATIONS: Repetitive muscle contraction of the hand immediately after performance of interscalene brachial plexus block with bupivacaine does not decrease the onset time of conduction blockade.
IMPLICATIONS: Successful parasacral injection consistently spreads to the pelvic portion of the obturator nerve and to the sacral roots. Therefore, parasacral block should theoretically provide obturator and perineal blockade, and eliminate the need for systematic separate obturator nerve block.
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