IMPLICATIONS: Left ventricular dysfunction during a 14 mm Hg pneumoperitoneum in patients scheduled for abdominal aortic repair in the supine or lateral position is more likely a consequence of a cardiac workload increase than of a venous return impairment.
IMPLICATIONS: In patients undergoing pulmonary embolectomy, severe hypotension after anesthesia induction, which requires emergent institution of cardiopulmonary bypass, occurs frequently (19%) and is unpredictable. Therefore, we recommend preparing and draping patients before induction of general anesthesia for surgical pulmonary embolectomy.
IMPLICATIONS: We evaluated a Thrombelastograph(R) ecarin clotting time assay and found that it correlated better than a standard activated clotting time test with plasma bivalirudin levels.
IMPLICATIONS: Recombinant FVIIa reduced postoperative bleeding, transfusion of red blood cells, fresh-frozen plasma, and platelet transfusion, as well as intensive care unit stay and re-exploration rate.
IMPLICATIONS: Ultrasound evaluation indicates that use of the central landmark approach for right internal jugular catheterization results in more medial needle insertion than desired, with risk of carotid puncture or failure to catheterize the jugular vein.
IMPLICATIONS: This pilot study performed in sevoflurane-anesthetized pigs suggests that the ANSiscopeTM monitor may be useful for representing and measuring neurovegetative activity during general inhaled anesthesia.
IMPLICATIONS: Paraplegia remains a devastating consequence of descending and thoracoabdominal aortic operations that have a period of obligate spinal cord ischemia. This research demonstrated no benefit of anesthetic preconditioning in attenuating this type of injury.
IMPLICATIONS: Inhibition of the regulatory protein, glycogen synthase kinase, enhances protection against myocardial infarction by isoflurane administered immediately before and during early reperfusion after prolonged coronary artery occlusion via a mitochondrial permeability transition pore-dependent mechanism.
IMPLICATIONS: Inhibition of the antiapoptotic regulatory protein Bcl-2 abolishes myocardial protection produced by brief exposure to isoflurane or repetitive, transient ischemic episodes during early reperfusion in rabbits. In contrast, inhibition of Bcl-2 did not affect protection afforded by cyclosporin A, a direct mitochondrial permeability transition pore (mPTP) antagonist. The results suggest that Bcl-2 mediates isoflurane-induced and ischemic postconditioning by indirectly modulating mPTP activity in vivo.
IMPLICATIONS: We compared the analgesic efficacy of the combination of acetaminophen 60 mg/kg rectally plus 40 mg/kg orally per 24 h and ketoprofen (a traditional nonsteroidal antiinflammatory drug) 4 mg/kg per 24 h IV with the single drugs in pediatric surgical inpatients. The combination produced better pain treatment than either single drug when evaluated by 24-h morphine requirement or objective pain scores.
IMPLICATIONS: Venipuncture is the most common painful event for hospitalized children. We observed that 20 s of forced exhalation during balloon inflation reduced both the incidence and severity of venipuncture pain. This reduction in venipuncture pain may be the combined effect of distraction and Valsalva.
IMPLICATIONS: We investigated, for the first time, which postoperative outcome is most important to pediatric patients using standard gamble techniques. The results suggest a difference between boys and girls, as well as a difference between children's and adults' preferences.
IMPLICATIONS: Preoperative tropisetron 0.1 mg/kg could effectively reduce the incidence of postoperative agitation after sevoflurane anesthesia for day-case adenoidectomy in small children. The effect of clonidine 1.5 {micro}g/kg did not differ from placebo.
IMPLICATIONS: Preoperative administration of granisetron, 1 mg per os, was not significantly different from ondansetron, 4 mg IV, in preventing emetic symptoms and improving recovery after laparoscopic surgery. However, ondansetron was more cost-effective than granisetron for routine prophylaxis as a result of its lower cost and comparable antiemetic efficacy and patient satisfaction.
IMPLICATIONS: Hypnosis given before surgery will significantly reduce the anxiety and fear of adult patients.
IMPLICATIONS: Blockade of N-methyl-d-aspartate (NMDA) receptors by conventional inhaled anesthetics does not mediate the capacity of such anesthetics to produce immobility in the face of noxious stimulation. In contrast, for aromatic anesthetics, NMDA receptors mediate production of immobility in proportion to the capacity of such anesthetics to block the NMDA receptor.
IMPLICATIONS: We found that equianesthetic concentrations (1 minimum alveolar anesthetic concentration [MAC]) of 15 structurally diverse inhaled anesthetics produced a sixfold range of inhibition of the human N-methyl-d-aspartate (NMDA) receptor, a finding that may be useful in a determination of the contribution of NMDA receptor inhibition to the MAC of inhaled anesthetics.
IMPLICATIONS: Blockade of N-methyl-d-aspartate receptors may explain the action of a few inhaled anesthetics, as defined by MAC, but may have minimal relevance for immobilization produced by most commonly used inhaled anesthetics.
IMPLICATIONS: The position of the C-OH group of an alcohol or the C=O group of a ketone (that is, the length of the acyl carbon chain extending from the C-OH or C=O group) is not a better predictor of anesthetic potency than the total length of the carbon chain or the affinity of the alcohol or ketone to a lipid (olive oil) phase.
IMPLICATIONS: Anesthetic drugs may depress bronchial clearance. Using an in vivo method, we demonstrated significantly more depression of bronchial clearance in patients anesthetized with sevoflurane compared with propofol. This might have an impact on the use of these drugs in patients at high risk for pulmonary complications.
IMPLICATIONS: Isoflurane causes widespread alterations in which genes are expressed in the central nervous system. This article uses GeneChip technology to describe these changes and the implications for understanding a more complete picture of clinical anesthetic effect.
IMPLICATIONS: We monitored central nervous system variables during rapid opiate detoxification for excitatory effects and their attenuation by the additional administration of the nonspecific N-methyl-d-aspartic acid-antagonist S(+)-ketamine.
IMPLICATIONS: The antinociceptive effects of three novel depots of buprenorphine esters were evaluated. We found that the novel depots of buprenorphine esters buprenorphine propionate, enanthate, and decanoate had a long duration of antinociceptive effect after IM injections in rats. This result is valuable for the development of long-acting analgesia for pain management.
IMPLICATIONS: The opioid antagonist naloxone does not increase the minimum alveolar anesthetic concentration of sevoflurane in mice. Opioid receptors do not mediate the capacity of inhaled anesthetics to suppress movement in response to noxious stimulation.
IMPLICATIONS: Bispectral index seems to show slight advantages discriminating between anesthetic propofol effect-site concentrations in comparison with spectral entropy.
Implications: To provide even remote areas with skilled, experienced anesthesiologists, an application of telemedicine resources was developed to transmit monitored patient data during anesthesia for consultation from a distance to improve patient outcome during anesthesia.
IMPLICATIONS: This case serves to illustrate the implications of monitor design and the potential impact of device failure in the absence of redundant monitoring of critical functionality.
IMPLICATIONS: We evaluated the relationship between analgesia and mood/quality of life using outcomes from a recent clinical trial. Treatment-induced analgesia was shown to correlate with improvement in mood and quality of life. These results suggest that greater analgesic efficacy may lead to larger improvements in mood/quality of life.
IMPLICATIONS: In a double-blind setting, laparoscopic surgery reduced postoperative pain and analgesic demand after myomectomy during the first 3 days after surgery compared with open surgery.
IMPLICATIONS: Paclitaxel and vincristine often produce a pain syndrome that compromises their usefulness as anticancer drugs. The experiments described here suggest that the pain may be caused by an impairment of neuronal or glial ability to properly regulate intracellular Ca2+. A possible underlying pathology could be impaired mitochondrial Ca2+ regulation.
IMPLICATIONS: Anesthesia times for individual diagnostic radiological procedures (e.g., magnetic resonance imaging) can be based on systematic rules from the facility's experts. In contrast, a series of interventional radiological procedures performed on the same day can be scheduled consecutively up to a calculated time (e.g., 4 pm), assuring that the anesthesia team usually finishes before the end of the workday (6 pm).
IMPLICATIONS: We evaluated the selection process for subspecialty meeting abstracts. There was poor to moderate agreement among reviewers. We suggest that the review process can be improved by using clear evaluation criteria and scoring abstracts using interval scales.
IMPLICATIONS: Lobar lung collapse is common after anesthesia and surgery. A standard, general (global) lung inflation maneuver is usually effective in improving lung function but may cause significant cardiovascular depression. This experimental study shows that selective inflation of a collapsed lobe via a balloon catheter is effective and has no significant circulatory side effects.
IMPLICATIONS: The respiratory-related changes in stroke volume and arterial pulse pressure have the same predictive value for cardiac responsiveness to intravascular fluid administration in mechanically ventilated patients. The influence of tidal volume on pulse pressure variability may increase the sensitivity of the test.
IMPLICATIONS: Pentoxifylline (PTX) has beneficial effects when administrated after hemorrhagic shock, restoring cardiac output and improving splanchnic perfusion. We tested the hypothesis that a combination of small volumes of hypertonic saline solution and PTX in the initial treatment of hemorrhagic shock provides synergistic hemodynamic benefits.
IMPLICATIONS: The lateral decubitus and prone "superman" positions were identified as high-risk positions for upper extremity somatosensory evoked potential changes in spine surgery. Somatosensory evoked potential changes were reversible by upper extremity position modification and were not associated with postoperative neurological deficits.
IMPLICATIONS: For early detection of venous air embolism, accurate precordial Doppler probe verification with test injections is crucial. Left parasternal Doppler probe placement was at least as sensitive to test injections as right parasternal placement. Vigorous central test injection may result in false positive verification of laterally placed precordial Doppler probes.
IMPLICATIONS: This study investigates the combined efficacy of an anti-excitotoxic and an anti-apoptotic drug in preventing ischemic neuronal death in a rat model. The role of the extrinsic caspase pathway in ischemia is explored using IETD, a specific caspase 8 inhibitor.
IMPLICATIONS: In this report, we discuss the use of dexmedetomidine as a rescue drug during an awake craniotomy for cortical motor mapping and tumor resection. The procedure was begun using a combination of continuous infusions of propofol and remifentanil, our prior standard regimen for these procedures.
IMPLICATIONS: This study showed that continuous spinal anesthesia provided fewer episodes of hypotension than single injection with 7.5 mg isobaric bupivacaine for surgical repair of hip fracture in elderly patients.
IMPLICATIONS: Peripheral nerve stimulation was used to guide placement of local anesthetic during infraclavicular block of the brachial plexus. The fastest onset of motor block and the greatest clinical success occurred when the posterior cord was located before injection.
IMPLICATIONS: This case report uses the emerging literature on the hepatic CYP450 enzyme system to provide an analysis of how multiple drug-drug interactions had a catastrophic effect in a patient receiving an otherwise uncomplicated anesthetic. We believe that evaluations in the field of anesthetic pharmacology will increasingly be based on this type of analysis.
IMPLICATIONS: This prospective study demonstrates that the incidence of sister chromatid exchanges in anesthesiologists exposed to waste anesthetic gases such as sevoflurane and nitrous oxide is more frequent in unexposed physicians in the same hospital. The increase of sister chromatid exchanges in anesthesiologists is reversible if they work free from exposure for 2 mo.
IMPLICATIONS: To detect residual neuromuscular blockade, tactile evaluation of 50-Hz tetanic, train-of-four (TOF), or double-burst fade lacks sensitivity. Fade after a 100-Hz tetanus is unreliable. An acceleromyographic TOF ratio of 1.0 is recommended to exclude residual paralysis. Stimulation at the hand and the wrist yields similar results for tactile evaluation.
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