IMPLICATIONS: Measurement of the aortic valve area is an important component of a comprehensive intraoperative echocardiographic examination during cardiac surgery involving the aortic valve. We demonstrate that epicardial echocardiography can be used as an intraoperative alternative or adjunct to transesophageal echocardiography for measuring the aortic valve area.
IMPLICATIONS: Intrathecal morphine at a dose 1/1000th of the IV dose, conferred the same cardioprotection as ischemic myocardial preconditioning. This finding might have implications for when neuroaxial analgesia is planned perioperatively for patients with coronary artery disease.
IMPLICATIONS: After elective open-heart surgery hydroxyethyl starch 130/0.4 and hydroxyethyl starch 200/0.5 solutions cause a similar coagulation disturbance. Albumin does not impair hemostasis in this setting.
IMPLICATIONS: We report here a unique case of left ventricular assist device outflow conduit obstruction by Myceliophthora thermophila a rare environmental thermophilic fungus. The obstruction was evaluated by visualization of the mass, Doppler interrogation of the flow using intraoperative transesophageal echocardiography and measurement of left ventricular internal dimensions.
IMPLICATIONS: This case report exemplifies the importance of routine preoperative screening for coagulation disorders in patients undergoing major surgery.
IMPLICATIONS: Hyperglycemia after traumatic brain injury (TBI) is associated with poor outcome. In this study of children with TBI undergoing urgent/emergent craniotomy, perioperative hyperglycemia was common and hypoglycemia was not rare. Perioperative hyperglycemia was predicted by age < 4 yr, severe TBI and the presence of multiple lesions that include subdural hematoma.
IMPLICATIONS: In neonatal mice, a 6-h exposure to 1.5% isoflurane, while promoting early neuroapoptosis, did not produce long-term neuronal loss or impairment of spatial learning and memory.
IMPLICATIONS: The subspecialty impact factor for Pediatric Anesthesia is generally less than the impact factor of the source journal, which could affect publishing decisions for both the authors and the journals.
IMPLICATIONS: Oropharyngeal leak pressure of ProSeal laryngeal mask airway was significantly lower than that of laryngeal tube section or Cobra perilaryngeal airway in the neck extension and rotation position. In addition, on moving the head and neck from the neutral position use of the laryngeal tube section and Cobra perilaryngeal airway resulted in an increased incidence of gastric insufflation and difficulty in ventilation.
IMPLICATIONS: During bariatric surgery, the alveolar recruitment maneuver (RM) effectively improves intraoperative oxygenation but does not significantly affect the desflurane concentration in blood.
IMPLICATIONS: The arteriovenous difference in plasma dilution in the forearm was reversed 2.5 min after infusing Ringer's lactate solution, whereas kinetic analysis showed a corresponding value for the whole body of 14-20 min. Distribution of Ringer's occurs at various rates in different body regions rather than being a fixed-rate single process.
IMPLICATIONS: Clinically relevant concentrations of isoflurane inhibit brainstem respiratory rhythmogenesis, prolong {gamma}-aminobutyric acid (GABA)ergic inhibitory postsynaptic currents (IPSC) and, in the meantime, reduce GABAergic IPSC frequency in cardiac vagal neurons. The decrease of the frequency of GABAergic IPSCs is partially dependent upon inhibition of presynaptic {alpha}4{beta}2 nicotinic receptors. These mechanisms may contribute to cardiorespiratory homeostatic autonomic regulation impairment induced by isoflurane.
IMPLICATIONS: This study demonstrates that the general anesthetics propofol and isoflurane enhance phasic and tonic {gamma}-aminobutyric acid type A currents in cardiac vagal neurons, which is likely an important mechanism responsible for the changes of heart rate and autonomic regulation during general anesthesia.
IMPLICATIONS: These findings suggest that transport proteins variably regulate fentanyl and loperamide pharmacokinetics and pharmacodynamics and may provide potential targets for therapeutics designed to modulate individual responses to opioids. The interindividual variability of fentanyl response may be related to currently unappreciated transporter interactions with other drugs, such as statins or variable transporter expression, thus affecting pharmacodynamics.
IMPLICATIONS: Computer simulation of etomidate action on the thalamocortical system revealed that GABAergic tonic inhibition, as compared to phasic inhibition, had greater depressant effects on cerebral cortical neuronal function. Furthermore, GABAergic anesthetic action in the thalamus alone does not likely explain how etomidate produces unconsciousness.
IMPLICATIONS: Steric and electrostatic features of volatile aromatic anesthetics are described which may explain the in vitro N-methyl-d-aspartate receptor inhibitory potencies of these anesthetics and their immobilizing activities in vivo.
IMPLICATIONS: Developing tadpoles exposed to up to 1.52% isoflurane continuously for 1 wk starting from the time of fertilization do not develop tolerance to isoflurane.
IMPLICATIONS: Electrical noise during intraoperative magnetic resonance imaging interferes with electrocardiographic monitoring. Filters can reduce the impact of the interference on the electrocardiograph, but diagnostic features may still be obscured.
IMPLICATIONS: Video laryngoscopy helps reduce the forces applied to the maxillary incisors of patients during intubation, regardless of common metrics of intubation difficulty (e.g., Mallampati grade).
IMPLICATIONS: Current power units set to the maximum temperature supply all the heat energy required to obtain maximum benefit from the blankets. Further gains in efficacy will require improvements in blanket design.
IMPLICATIONS: Resistive under-patient heating blanket and forced-air warming systems provide similar warming capability in patients undergoing elective total hip replacement. The resistive heating blanket device may offer the advantage of greater positioning flexibility.
IMPLICATIONS: The development and introduction of a novel comprehensive multidisciplinary process that includes in situ simulation allows clinicians to proactively identify hazards and design safe-care systems. Anesthesiologists can play a pivotal role in improving clinical safety by leading changes in improving teamwork, creating a protocol for delivery of therapy, and changing the system before exposing patients to unnecessary and preventable hazards. With the novel process described in this paper, we have been able to implement a new intraoperative program that proactively identified potential hazards.
IMPLICATIONS: Interruptions and distractions are a frequent but necessary part of life in the operating room. How the anesthesiologist deals with distractions may affect the incidence of errors, such as omission of the bedside blood product check.
IMPLICATIONS: This study shows that endothelin-1 (ET-1) inhibitis alveolar fluid clearance in anesthetized rats and in the isolated, ventilated, perfused rat lung by inhibition of amiloride-sensitive epithelial Na+ channels. This effect is mediated by the endothelin-B-receptor, and, in addition to increasing capillary pressure, contributes to pulmonary edema formation in situations when ET-1 expression is incresaed, e.g., in acute respiratory distress syndrome and at high-altitude.
IMPLICATIONS: This retrospective study suggests that acute interstitial pneumonia is a rapidly progressive disease frequently leading to respiratory failure and mechanical ventilation. We propose that transbronchial lung biopsy may be a logical first diagnostic step, to be followed by an open lung biopsy, if necessary.
IMPLICATIONS: Although prolonged sedation with etomidate is contraindicated due to the endocrine complications of the drug, our young, female patient with typical Cushing's syndrome did not respond to other therapeutic methods. Etomidate infusion was successfully used to suppress the hypercortisolic state. This may be an option for other patients with Cushing's syndrome.
IMPLICATIONS: There were no differences in the cephalad extent of sensory blockade using single-shot spinal compared with combined spinal-epidural anesthetic techniques when equal intrathecal anesthetic doses were administered. This suggests that altering intrathecal dosing is not necessary.
IMPLICATIONS: Parous women were randomized to receive combined spinal-epidural or epidural labor analgesia, maintained with a continuous epidural infusion of bupivacaine and fentanyl. There was no difference in the number of patient requests for top-up doses between groups.
IMPLICATIONS: A retrospective review of 1025 parturients with neuraxial labor analgesia who required intrapartum cesarean delivery, identified initiation of analgesia with an epidural technique (compared to a combined spinal-epidural technique), more than one episode of breakthrough pain during labor and prolonged duration of neuraxial labor analgesia to be associated with failed conversion to epidural anesthesia for cesarean delivery.
IMPLICATIONS: Clinical simulation can provide anesthesia practitioners with useful training in the recognition and management of intraoperative emergencies. In this study, anesthesiologists achieved modestly higher mean scores than nurse anesthetists, but there was a similar broad range of scores in both groups.
IMPLICATIONS: The results from this most recent survey of the United States anesthesiology training programs imply that departments' financial support also continues to increase and open faculty positions remain. The support is associated with the reimbursement for anesthesia work.
IMPLICATIONS: Direct laryngoscopy is difficult in patients whose cervical spine is immobilized by a rigid collar. The Airway Scope(R) and StyletScope(R) are laryngoscopes designed to facilitate difficult tracheal intubation. Both offer high success rates in these patients, however, Airway Scope is faster and less likely to cause esophageal intubation.
IMPLICATIONS: Brain injury is reduced and neurological outcome improved after middle cerebral artery occlusion in mice lacking the {beta}2AR or in wild type mice pretreated with a selective {beta}2AR antagonist. This is consistent with a shift away from prosurvival signaling to prodeath signaling in the presence of {beta}2AR activation in cerebral ischemia.
IMPLICATIONS: Interleukin-6 in cerebrospinal fluid increased in the acute stage of subarachnoid hemorrhage in rats. {beta}-Adrenoceptor antagonists with a {beta}2-adrenoceptor blocking action suppressed this elevation of interleukin-6 concentrations.
IMPLICATIONS: Parecoxib and valdecoxib were not found to increase the risk of cardiovascular adverse events after noncardiac surgery, suggesting that the increased risk of cardiovascular thromboembolic events associated with parecoxib and valdecoxib after cardiac surgery with cardiopulmonary bypass cannot be generalized to patients undergoing noncardiac surgery.
IMPLICATIONS: Clinical observations suggest that there is an association between chronic opioid use and smoking which may affect the ability of smokers with chronic pain to eliminate the use of opioids. Despite an increased frequency of baseline opioid use, smoking did not affect the success of opioid tapering.
IMPLICATIONS: Inhibition of fatty acid amide hydrolase produces antihyperalgesic effects in several preclinical animal pain models, including both neuropathic and inflammatory states. These data indicate that the enzyme may offer a new target for the treatment of a broad range of human clinical pain conditions.
IMPLICATIONS: Combined Ilioinguinal-iliohypogastric and intercostal nerve (T11-T12) block can improve analgesia and reduce postoperative opioid consumption during the first 24 h after renal transplantation.
IMPLICATIONS: Preclinical results with functional brain imaging using blood-oxygen-level-dependent contrast suggest that the analgesic efficacy of systemic lidocaine is unlikely to be mediated through action on normal physiological pain pathways.
IMPLICATIONS: Patients with a continuous infraclavicular nerve block given a 0.4% ropivacaine infusion at 4 mL/h experienced an insensate limb three times more often than those given an equal basal dose, but as a 0.2% concentration at 8 mL/h. This is the opposite of the relationship previously reported for continuous popliteal-sciatic nerve blocks. The interaction between local anesthetic concentration and volume is thus complex and varies among catheter locations.
IMPLICATIONS: The epidural nerve stimulation test, which has been described as a simple and reliable way to confirm epidural catheter position, was associated with technical difficulties and interpretation problems. The role of the repeated use of the epidural stimulation test in improving the quality of analgesia in patients undergoing postoperative continuous epidural analgesia remains undetermined.
IMPLICATIONS: Compared to the classic posterior approach to popliteal sciatic nerve block, a modified intertendinous approach produced a more rapid onset of anesthesia when local anesthetic was injected after an evoked motor response of inversion.
IMPLICATIONS: Arm abduction reduces the depth of the brachial plexus at the infraclavicular level but does not have a marked influence on the position of the brachial plexus relative to the coracoid process or the pleura. Ultrasound examination may under-estimate the skin-to-plexus distance due to the transducer pressure on the skin and compression of the underlying tissues.
IMPLICATIONS: This study confirms the benefit of perineural use of tramadol. The prolongation of blocks and postoperative analgesia are dose-dependent. However, the delay of onset of the block with high-dose tramadol could limit its routine use.
IMPLICATIONS: Despite confirmation of correct catheter positioning during placement using objective means, catheter migration via various routes is still possible. We describe the migration of a thoracic epidural catheter into the intercostal space via the intervertebral foramen.
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