Anesthesia and analgesia
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Anesthesia and analgesia · Aug 1996
Comparative StudyClinical evaluation of a prototype motion artifact resistant pulse oximeter in the recovery room.
The frequency and nature of spurious pulse oximetry readings were compared using both a conventional pulse oximeter (CPO) and a prototype Masimo signal extraction technology pulse oximeter (Masimo SET). At a university hospital, 50 ASA physical status I-IV adult patients who underwent general or spinal-epidural anesthesia were selected from a group of 250 patients on the basis of high-alarm generation with routine postoperative pulse oximetry. Pulse oximetry data were recorded simultaneously from both devices with a computer. ⋯ The prototype Masimo SET device alarm frequency was once every 30 min, and 59% of these were considered false. During arm motion with 15 patients, the CPO device produced spurious signals on 54 occasions compared with five for the prototype Masimo SET. The incidence of artifactual pulse oximetry events during patient motion appear to be substantially reduced with the prototype Masimo SET device, relative to a CPO device.
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Anesthesia and analgesia · Aug 1996
Randomized Controlled Trial Clinical Trial Retracted PublicationThe effects of albumin versus hydroxyethyl starch solution on cardiorespiratory and circulatory variables in critically ill patients.
Sufficient intravascular fluid therapy is of major importance in the treatment of the critically ill patient. The present study assessed whether the cardiorespiratory response of long-term volume replacement with low-molecular weight (LMW) hydroxyethyl starch solution (HES) differs from that of human albumin (HA). According to a randomized sequence, 30 trauma patients (injury severity score [ISS] between 15 and 30) and 30 sepsis patients (secondary to major general surgery) received either 10% HES (mean molecular weight 200,000 daltons; HES trauma [n = 15], HES sepsis [n = 15]) or human albumin 20% (HA trauma [n = 15], HA sepsis [n = 15]) over 5 days to keep pulmonary capillary wedge pressure (PCWP) between 12 and 18 mm Hg. ⋯ We conclude that long-term intravascular fluid therapy with HA in traumatized and sepsis patients has no advantages in comparison to LMW-HES. In both groups, volume replacement with HES even resulted in improved systemic hemodynamics. Decrease in pHi in the sepsis patients was blunted by HES infusion indicating improved splanchnic perfusion by this regimen of volume therapy.
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Anesthesia and analgesia · Aug 1996
Comment Letter Comparative StudyElectromyographic comparison of obturator nerve block to 3-in-1 block.