Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Aug 2002
Impact factor bias and proposed adjustments for its determination.
The impact factor (IF), a qualitative parameter used to evaluate scientific journals, has several flaws. The aim of the study was to evaluate two of its important constraints, journal self-citation and scientific field, and to investigate the potential for improvement. ⋯ Correcting the IF of the 36 journals for self-citation did not significantly change journal rankings. The adjusted IF/fcat to normalize for the scientific field was positively correlated with the conventional IF.
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Skin conductance (SC) as a measure of emotional state or arousal may be a tool for monitoring surgical stress in anaesthesia. When an outgoing sympathetic nervous burst occurs to the skin, the palmar and plantar sweat glands are filled up, and the SC increases before the sweat is removed and the SC decreases. This creates a SC fluctuation. The purpose of this study was to measure SC during laparoscopic cholecystectomy with propofol and remifentanil anesthaesia and to evaluate whether number and amplitude of SC fluctuations correlate with perioperative stress monitoring. ⋯ Number of SC fluctuations may be a useful method for monitoring the perioperative stress.
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Acta Anaesthesiol Scand · Aug 2002
Epidural blood patch for management of postdural puncture headache in adolescents.
In some patients spinal puncture (SP) is followed by postdural puncture headache (PDPH). When the symptoms of PDPH are severe and are not relieved within a few days an epidural blood patch (EBP) might be performed. The aim of this survey was to review requests for EBPs and to evaluate the effectiveness of EBP in patients aged 13-18 years during a 6.5 year period ending in June 2001. ⋯ Epidural blood patch seems to be an effective and safe procedure in adolescents for treating severe and persistent PDPH.
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Acta Anaesthesiol Scand · Aug 2002
Randomized Controlled Trial Clinical TrialAuditory evoked potential monitoring with the AAITM-index during spinal surgery: decreased desflurane consumption.
The auditory evoked potential (AEP) is sensitive to the depth of anesthesia. The A-line monitor is a novel device that processes the amplitude and latency of the AEP during the mid-latency time window to provide a simple numerical index, the AAItrade mark-index. The hypothesis of the present study was that titration of anesthetic depth (desflurane) by means of the AAItrade mark-index could decrease the consumption of the main anesthetic and shorten emergence times. ⋯ Titrating depth of desflurane anesthesia using AAItrade mark-index guidance decreased main anesthetic consumption and improved emergence during spine surgery.
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Acta Anaesthesiol Scand · Aug 2002
Randomized Controlled Trial Clinical TrialNasal CPAP therapy: effects of different CPAP levels on pressure transmission into the trachea and pulmonary oxygen transfer.
Nasal continuous positive airway pressure (nCPAP) is considered useful for prophylaxis and treatment of respiratory complications following major thoracic surgery. It is unknown, however, which CPAP levels are required to avoid alveolar derecruitment and to consistently improve pulmonary oxygen transfer in patients following thoracotomy. We therefore studied the effects of different nCPAP levels on pressure transmission into the trachea as well as on pulmonary oxygen transfer. ⋯ Nasal CPAP is an effective non-invasive means of increasing tracheal and thus intrathoracic pressure without adverse hemodynamic effects. Only mask pressures of 9-10 cm H2O were sufficient to consistently improve pulmonary oxygen transfer in patients following thoracotomy.