Journal of critical care
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Journal of critical care · Aug 2014
Observational StudyCorrelation of corrected flow time in the carotid artery with changes in intravascular volume status.
Assessment of volume status remains a challenge in critical care. Our purpose was to determine if Doppler waveform analysis of carotid artery blood flow correlates with changes in volume status. ⋯ Intravenous fluid administration in dehydrated patients resulted in significant changes in FTc in the carotid artery despite no change in vital signs. Corrected flow time measured from carotid arterial blood flow may be a useful means of assessing volume status in volume-depleted patients.
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Journal of critical care · Aug 2014
Observational StudyNoninvasive ventilation in the event of acute respiratory failure in patients with idiopathic pulmonary fibrosis.
Some patients with idiopathic pulmonary fibrosis (IPF) develop severe acute respiratory failure (ARF) requiring admission to an intensive care unit (ICU) and ventilatory support. A limited number of observational studies have reported that noninvasive ventilation (NIV) can be an effective treatment to support breathing and to prevent use of invasive mechanical ventilation in these patients. This study aimed to retrospectively investigate the clinical status and outcomes in IPF patients receiving NIV for ARF and to identify those clinical and laboratory characteristics, which could be considered risk factors for its failure. ⋯ The outcome of IPF patients who were administered NIV was quite poor. The use of NIV was, nevertheless, found to be associated with clinical benefits in selected IPF patients, preventing the need for intubation and reducing the rate of complications/death. Elevated plasma NT-proBNP levels at the time of ICU admission is a simple clinical marker for poor NIV outcome.
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Journal of critical care · Aug 2014
Usefulness of interleukin 6 levels in the cerebrospinal fluid for the diagnosis of bacterial meningitis.
Interleukin 6 (IL-6) is a proinflammatory cytokine produced during infections. We hypothesized that IL-6 levels in the cerebrospinal fluid (CSF) would be elevated in bacterial meningitis and useful for diagnosing and predicting neurologic outcomes. ⋯ Measurement of the CSF IL-6 level is useful for diagnosing bacterial meningitis.
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Journal of critical care · Aug 2014
Microcirculatory perfusion derangements during continuous hemofiltration with fixed dose of ultrafiltration in stabilized intensive care unit patients.
Acute kidney injury (AKI) is a well-known complication in critically ill patients. Little is known about the timing and the ultrafiltration dose after initial resuscitation. In vivo microscopy of the microcirculation has been suggested as alternative for the assessment of volume status. Previous studies contribute to the understanding that intravascular hypovolemia is reflected by microcirculatory blood flow changes not detected by conventional methods. The aim of our study was to assess microcirculatory blood flow changes during negative fluid balance ultrafiltration in patients with oliguric AKI. ⋯ Microcirculatory blood flow is not altered by reduced substitution during renal replacement therapy.
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Journal of critical care · Aug 2014
Successful weaning and decannulation after interventional bronchoscopic recanalization of tracheal stenosis.
Early posttracheostomy tracheal stenosis (PTTS) may cause weaning and decannulation failure. Although bronchoscopic recanalization offers an effective treatment, it is not known how successfully patients can be weaned and decannulated after recanalization. The aims of this study were to determine the incidence of PTTS in a modern weaning center and to elucidate the benefit of interventional recanalization in terms of weaning and decannulation success. ⋯ Posttracheostomy tracheal stenosis remains a relevant cause of weaning and decannulation failure. Bronchoscopic recanalization is safe and facilitates weaning and successful decannulation in about half of the cases.