Journal of clinical monitoring and computing
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J Clin Monit Comput · Jun 2008
Comparative Study Controlled Clinical TrialNon-invasive cardiac output by transthoracic electrical bioimpedence in post-cardiac surgery patients: comparison with thermodilution method.
Thoracic electrical bioimpedance (TEB) cardiac output (CO) is being explored increasingly as a non-invasive alternative to the pulmonary artery catheter (PAC). This study compared TEB-CO measured using a new instrument--NICOMON (Larsen & Toubro Ltd. India) with thermodilution (Td) CO in post-cardiac surgery patients. ⋯ Thoracic electrical bioimpedance cardiac output compares favorably with thermodilution method among post-cardiac surgery patients. Further studies are indi- cated with this instrument to validate its efficacy in various clinical situations and utility in monitoring hemodynamic interventions.
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J Clin Monit Comput · Jun 2008
Accuracy of continuous central venous oxygen saturation monitoring in patients undergoing cardiac surgery.
Continuous assessment of central venous oxygen saturation (S(cevox)O(2)) with the CeVOX device (Pulsion Medical Systems, Munich, Germany) was evaluated against central venous oxygen saturation (S(cv)O(2)) determined by co-oximetry. ⋯ In adult patients during and after cardiac surgery, the current version of the CeVOX device might not be the tool to replace S(cv)O(2) determined by co-oxymetry, although sensitivity and specificity of S(cevox)O(2 )to predict substantial changes in S(cv)O(2) were acceptable.
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Capnogram is often distorted due to aspiration of expired gas when a sidestream capnometer is used for non-intubated, spontaneously breathing condition. The purpose of this study was to make a flow-through capnometer without aspiration and to check if this capnometer precisely detected apnea during obstructive sleep apnea (OSA). ⋯ We concluded that the cap-ONE can record capnograms with minimum distortion and detect apnea reliably during OSA.
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J Clin Monit Comput · Apr 2008
Comparative Study Clinical TrialComparison of Narcotrend Index, Bispectral Index, spectral and entropy parameters during induction of propofol-remifentanil anaesthesia.
This study investigated the suitability of various electroencephalogram (EEG) parameters to describe anaesthetic drug effects in propofol-remifentanil anaesthesia. The investigated parameters were the Narcotrend Index (NI), the Bispectral Index (BIS), and standard spectral and entropy parameters. Additionally, it was investigated whether the effect of a fixed dosage of propofol on the attained depth of hypnosis during induction of anaesthesia is different in male and female patients. ⋯ NI and BIS are superior to spectral and entropy parameters in describing changes of propofol concentration during induction of propofol-remifentanil anaesthesia.