IMPLICATIONS: In five of seven central venous catheters removed because of clinical signs of catheter-related blood infections, DNA analysis showed bacteria found on the catheter tip to be identical with bacteria found on the puncture kits used for insertion of these catheters.
IMPLICATIONS: The associations between tumor necrosis factor (TNF) gene polymorphism, plasma cytokines, and cardiopulmonary function after elective cardiac surgery were evaluated. Patients homozygous for the TNFB2 allele displayed larger concentrations of TNF-{alpha} and interleukin-6 and had an increased risk of developing left ventricular and pulmonary dysfunction compared with TNFB1 homo- or heterozygotes.
IMPLICATIONS: Pressure-volume loops provide on-line quantification of intrinsic systolic and diastolic myocardial function in a load-independent fashion. This study shows the feasibility of perioperative pressure-volume analysis by use of the conductance-catheter method. This method provides detailed data about the immediate effects of surgery and may be used to evaluate complex cardiac procedures.
IMPLICATIONS: We examined the impact of cardiopulmonary bypass, preoperative hematocrit, gender, age, and body weight on blood use in patients undergoing primary coronary artery bypass surgery at a tertiary care institution. We found that all five of these variables are significant predictors of blood use in patients undergoing coronary artery bypass surgery.
IMPLICATIONS: The Jarvik 2000 is a left ventricular assist device that produces continuous nonpulsatile axial flow by means of a rotating, vaned impeller. Because the anesthetic considerations differ from those of conventional left ventricular assist devices, we report the perioperative management of the first 10 patients who participated in a bridge-to-transplantation feasibility study of the Jarvik 2000.
IMPLICATIONS: The effect of acute increases in oxygen consumption (shivering) on severely anemic individuals has not been evaluated. In this experimental model, left ventricular oxygen balance was marginal, as evidenced by decreased lactate extraction.
IMPLICATIONS: The authors present a rare case of tetraplegia after coronary artery bypass grafting. It is suggested that neck extension during surgery might have aggravated an occult preexisting cervical spinal canal stenosis to produce cervical injury.
IMPLICATIONS: This case report discusses a minimally invasive anesthetic approach towards the morbidly obese patient undergoing endovascular abdominal aortic aneurysm repair. It demonstrates a safe and cost-effective means of managing a patient with numerous comorbidities. We also discuss an anesthetic/surgical approach on how to provide maximum analgesia with minimal anesthesia.
IMPLICATIONS: A new technique to confirm epidural catheter position uses low current electrical stimulation in pediatric patients. This study evaluated the use of electrical stimulation in 30 pediatric patients for directly placed catheters. Electrical stimulation did not provide any advantage over conventional methods (e.g., cutaneous landmarks) for confirmation of catheter position.
IMPLICATIONS: The following case report documents the anesthetic planning and management leading to and including a 5-day separation of twins joined at the head. This case report also details the difficulties encountered during the unique combination of a rarely performed procedure and a long operating time.
IMPLICATIONS: Outpatient knee arthroscopy may be performed using a variety of anesthetic techniques. We report that spinal anesthesia and psoas compartment block are superior to general anesthesia when considering resource utilization, patient satisfaction, and postoperative analgesic management.
IMPLICATIONS: Most surgical patients use some form of complementary-alternative medical therapies (CAM) and are willing to accept CAM therapy as part of their perioperative management.
IMPLICATIONS: Intraarticular administration of piroxicam along with bupivacaine improves postoperative analgesia in synovial inflammation before surgery.
IMPLICATIONS: Riluzole, a drug that activates potassium channels and decreases glutamatergic neurotransmission, primarily acts on supraspinal sites to produce immobility in response to noxious stimuli. This finding does not support the hypothesis that potassium channels mediate the capacity of inhaled anesthetics to produce immobility in the face of noxious stimulation.
IMPLICATIONS: Our results show that isoflurane activates mitochondrial adenosine triphosphate-sensitive potassium (mitoKATP) channels, but not through pathways involving adenosine, protein kinase C, tyrosine kinase, or p38 mitogen-activated protein kinase. Isoflurane may directly activate mitoKATP channels.
IMPLICATIONS: The MAC-sparing effect provides several variables that allow comparison between different analgesic substances. However, the observations made are not simply the result of the antinociceptive effects of the tested drugs but rather the result of complex interactions between these drugs and a halogenated vapor.
IMPLICATIONS: Our results did not support the hypothesis that the responses to tracheal intubation can be more accurately predicted when unconsciousness is controlled with the aid of an electroencephalographic burst suppression pattern. Significant differences were found in the reactions between propofol and thiopental. At the burst suppression level, the catecholamine response was abolished with propofol.
IMPLICATIONS: Flumazenil attenuates the development of tolerance to isoflurane and diazepam after chronic isoflurane pretreatment. Isoflurane, like diazepam, attenuates the increase in central benzodiazepine receptor (CBR) density caused by flumazenil. These findings suggest that isoflurane and diazepam share a mechanism of action, most probably via the gamma-aminobutyric acid system and the CBR.
IMPLICATIONS: Overactive inflammatory responses underlie several perioperative disorders. Compared with racemic bupivacaine and other anesthetics, S(-)-bupivacaine appears particularly effective in suppressing neutrophil priming, a process responsible in part for the overactive neutrophil response.
IMPLICATIONS: We examined the effects of edrophonium on neostigmine-induced contractile and phosphatidylinositol responses of rat trachea. Neostigmine-induced tension and inositol monophosphate accumulation were attenuated by edrophonium. This attenuation was reversed by washing. The results suggest that edrophonium would bind to the allosteric site.
IMPLICATIONS: The FMS 2000 and Level 1 H1025 warming capabilities were similar at metered flows of 500 mL/min. At more rapid flow rates, which are achieved by the H1025, fluid warming decreases dramatically. The air-detection and -elimination system of the FMS 2000 is superior to that of the H1025.
IMPLICATIONS: The present study depicts the profile of volatile anesthetics, isoflurane and sevoflurane, in exhaled air of ambulatory patients. Biomonitoring of expired anesthetic concentrations is a noninvasive and rapid method to determine volatile anesthetic excretion.
IMPLICATIONS: Pressure infusion devices are widely used to treat patients with large-volume blood loss. The use of these devices may subject patients to the risk of venous air embolism. Our study found the new Ranger device to be superior to the widely used Level 1 in air elimination.
IMPLICATIONS: Severity of postoperative pain may affect quality of life
IMPLICATIONS: The continuous postoperative wound infiltration after shoulder surgery with different concentrations of ropivacaine, 2 mg/mL and 3.75 mg/mL, results in lower pain scores and opioid requirement compared with infiltration with placebo. Plasma levels of ropivacaine remained less than the toxic threshold.
IMPLICATIONS: Renal nociception conducted multisegmentally by both the spinal nerves (T10 to L1) and the vagus nerve cannot be blocked by epidural analgesia alone. We demonstrated that IV ketamine had an improved analgesic or opioid-sparing effect when it was combined with epidural bupivacaine and morphine after renal surgery.
IMPLICATIONS: Monitoring both urine toxicology and aberrant behavior in chronic-pain patients treated with opioids identified more problem patients than by monitoring either alone. The authors recommend routine urine testing on all patients prescribed opioids for noncancer pain and as a required element in all opioid analgesic studies.
IMPLICATIONS: Topical administration of the opioid {micro}-agonist morphine and the sodium channel inhibitors butamben and benzocaine results in a synergistic interaction for antinociception in radiant heat tail-flick assay in mice, suggesting that the combination of these drugs will enhance rather than detract from the analgesia of either alone.
IMPLICATIONS: We report a patient with lymphoma, prior bone marrow transplant, and acute visceral pain for whom IV opioids in large doses proved inadequate. An interventional pain management technique was considered until characteristic varicella vesicles appeared over the patient's trunk. We report this case to alert others who treat oncology patients that the diagnosis of visceral zoster should be considered when patients who have undergone bone marrow transplantation present with severe visceral pain.
IMPLICATIONS: Many anesthesiologists work at hospitals where surgeons and/or operating room (OR) committees focus repeatedly on turnover time reduction. We developed a methodology by which the reductions in staffing cost as a result of turnover time reduction can be calculated for each facility using its own data. Staffing cost reductions are generally very small and would be achieved predominantly by reducing allocated OR time to the surgeons.
IMPLICATIONS: Our retrospective study describes an increase of 20% in nursing costs after a 4% decrease in nurse working time. During the period of implementation of the new working schedule, an increase in sick leave was observed. The interaction between shortage of nursing personnel, working time, and wages is discussed.
IMPLICATIONS: Prepared endotracheal tubes (PETTs) are back-up airway equipment to be used in the case of a difficult intubation. A short PETT shelf life because of unknown safe storage time results in significant budget costs. This blinded, controlled study examined the pathogenic potential of PETTs in the operating room environment.
IMPLICATIONS: Albumin concentrations more than 2.4 wt% decreased the water permeabilities of ultrafiltration membranes compared with those measured in the absence of albumin. The finding may be explained by slowed solute-solvent exchange at the membrane surface, suggesting that the reduction in water permeability of capillary membranes by colloidal macromolecules may not be caused solely by plugging of the capillary pores.
IMPLICATIONS: We studied the application of artificial neural networks (ANN) to the estimation of respiratory compliance during mechanical ventilation. The study was performed on an animal model of acute lung injury, testing the performance of ANN in both healthy and diseased conditions of the lung.
IMPLICATIONS: Some intensive care patients have very large creatinine clearances that result in very low levels of fourth-generation cephalosporins. Serum levels of these antibiotics need to be maintained (time > minimum inhibitory concentration is important). Because routine measurements of cephalosporin levels are generally unavailable, we suggest that more frequent use be made of creatinine clearances to allow prediction of low levels and, hence, alterations in dosing.
IMPLICATIONS: During incomplete cerebral ischemia, the neuroprotective anesthetics sevoflurane and propofol suppressed cerebral increases in norepinephrine and glutamate concentrations. In contrast, propofol, but not sevoflurane, suppressed the ischemia-induced increase in circulating catecholamines to baseline levels. The results question a role for plasma catecholamines in cerebral ischemic injury.
IMPLICATIONS: Cardiovascular and catecholamine responses to endotracheal intubation may differ according to the time elapsed and the level of injury in patients with complete spinal cord injury.
IMPLICATIONS: We evaluated sevoflurane requirements to suppress skin vasomotor reflex and pupillary dilation in response to a transcutaneous electrical stimulation at the surgical site during combined epidural-general anesthesia. Our results indicate that when epidural anesthesia is combined, general anesthetic requirements decrease depending on the lidocaine concentration for epidural anesthesia and the site where surgical stimulation is applied.
IMPLICATIONS: After continuous peripheral nerve blockades, the long-acting local anesthetics bupivacaine and ropivacaine both induce fiber necrosis in porcine skeletal muscle tissue. In comparison with ropivacaine, bupivacaine causes tissue damage of a significantly larger extent and additionally induces apoptosis in skeletal muscle cells.
IMPLICATIONS: A case is presented of sciatic palsy developing after total hip arthroplasty in a patient receiving a continuous lumbar plexus block. The case highlights various issues in the use of continuous peripheral nerve blocks for postoperative analgesia.
IMPLICATIONS: The ability of direct pressure to produce a greater inhibition of unmyelinated C-fibers in male subjects compared with female subjects is consistent with, and may help explain, the male increased susceptibility to perioperative ulnar nerve dysfunction.
IMPLICATIONS: Routine cleaning and autoclaving does not remove protein material from reusable laryngeal mask airway devices.
IMPLICATIONS: We report a case of gastric aspiration with the ProSealTM laryngeal mask during a laparoscopic cholecystectomy secondary to an unidentified foldover malposition. It is imperative that the position and patency of the drain tube be verified in all patients with the ProSealTM laryngeal mask.
To see an article, click its [Full Text] or [PDF] link. To review many abstracts, check the boxes to the left of the titles you want, and click the 'Get All Checked Abstract(s)' button. To see one abstract at a time, click its [Abstract] link.