Journal of clinical monitoring and computing
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J Clin Monit Comput · Aug 2014
Randomized Controlled TrialComplex signals bioinformatics: evaluation of heart rate characteristics monitoring as a novel risk marker for neonatal sepsis.
Heart rate characteristics monitoring for early detection of late-onset neonatal sepsis was first described in 2003. This technique, which uses mathematical methods to report the fold-increase in the risk of imminent neonatal sepsis, adds independent information to laboratory tests and clinical findings, and, in a large randomized trial, reduced NICU mortality of very low birth weight infants. Through re-analysis and new secondary analyses of published studies, we have systematically evaluated the utility of this new risk marker for screening the growing population of premature infants. ⋯ Heart rate characteristics monitoring is a validated risk marker for sepsis in the NICU.
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J Clin Monit Comput · Aug 2014
Randomized Controlled TrialThe effect of desflurane versus propofol on regional cerebral oxygenation in the sitting position for shoulder arthroscopy.
The sitting position may cause significant hemodynamic instability and cerebral hypoperfusion. We investigated the effects of desflurane and propofol on regional cerebral oxygenation (rSO2) in the sitting position during arthroscopic shoulder surgery. Forty patients undergoing arthroscopic shoulder surgery in the sitting position were randomly allocated to the desflurane group (n = 20) or the propofol group (n = 20). ⋯ The incidence of rSO2 <75% of the baseline values after the sitting position was similar between the groups (0 and 10% in the desflurane and propofol group, respectively, P = 0.487). When anesthetized patients were raised to the sitting position, desflurane preserved cerebral oxygenation better than propofol at equipotent concentrations in terms of BIS. However, both anesthetics were associated with significant decrease in the rSO2 values during the sitting position.
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J Clin Monit Comput · Aug 2014
LetterContinuous real time endotracheal tube cuff pressure waveform.
Endotracheal tube cuff pressure monitoring is one of the standard degrees of care afforded to anesthetized patients in the operative theater. Traditional pressure transducer when used to monitor cuff pressure provides real time continuous sine wave pressure waveform which has not been described in literature so far. This unique waveform needs to be further processed and evaluated to check its utility in airway pressure monitoring.
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J Clin Monit Comput · Aug 2014
Accurate and stable continuous monitoring module by mainstream capnography.
End-tidal partial pressure of [Formula: see text] is an important index in clinical monitoring. Medical mainstream capnography has become widely used, but there are still limitations in accuracy and stability. A type of mainstream capnometer based on the principle of non-dispersive infrared was designed. ⋯ Several digital filtering techniques are used to process various interferences and improve capnogram quality. Clinical tests and targeted experiments show this mainstream capnometer can accurately monitor respiratory CO2 concentrations, especially at the end-tidal peak point. This capnometer also shows high accuracy and stability in long-term continuous monitoring.