Minerva anestesiologica
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Minerva anestesiologica · Jun 2014
ReviewProtective lung ventilation in operating room: Systematic Review.
Postoperative pulmonary and extrapulmonary complications adversely affect clinical outcomes and healthcare utilization, so that prevention has become a measure of the quality of perioperative care. Mechanical ventilation is an essential support therapy to maintain adequate gas exchange during general anesthesia for surgery. Mechanical ventilation using high tidal volume (VT) (between 10 and 15 mL/kg) has been historically encouraged to prevent hypoxemia and atelectasis formation in anesthetized patients undergoing abdominal and thoracic surgery. ⋯ There is, however, little evidence regarding a potential beneficial effect of lung protective ventilation during surgery, especially in patients with healthy lungs. Although surgical patients are frequently exposed to much shorter periods of mechanical ventilation, this is an important gap in knowledge given the number of patients receiving mechanical ventilation in the operating room. This review developed the benefits of lung protective ventilation during surgery and general anesthesia and offers some recommendations for mechanical ventilation in the surgical context.
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Minerva anestesiologica · Jun 2014
ReviewUpdate on haemodynamic monitoring and management in septic patients.
Severe sepsis and septic shock are associated with significant mortality. Effective management of this clinical syndrome includes early resuscitation with fluids and vasoactive drugs to maintain vital organ perfusion and oxygen delivery. Understanding the different approach to the management of sepsis during the resuscitation and ongoing management phases is essential to initiate context- and time-specific interventions. ⋯ Minimally invasive and completely non-invasive cardiac output monitors have been developed, but require validation in this specific cohort of patients. The trend in hemodynamic parameters is particularly important when any intervention to augment cardiac output is carried out (functional hemodynamic monitoring). Cardiac output monitors and surrogates of tissue oxygenation are only able to guide management, as patient outcome is determined by acquisition and interpretation of accurate data, and suitable management decisions.
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Minerva anestesiologica · Jun 2014
Observational StudyChanges in thenar muscle tissue oxygen saturation assessed by near-infrared spectroscopy during weaning from mechanical ventilation.
Tissue oxygen saturation (StO₂) measured by near-infrared spectroscopy (NIRS) has been used to provide information on local tissue oxygenation in different clinical settings. This study aims to determine the effect of weaning from mechanical ventilation on thenar muscle StO₂. ⋯ SBT failure was associated with a significant impairment of thenar muscle StO₂. A decrease of StO₂ at 2 minutes after disconnection from the ventilator was associated with SBT failure. Further validation is warranted.
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Minerva anestesiologica · Jun 2014
A pharmacokinetic study of 48-hour sevoflurane inhalation using a disposable delivery system (AnaConDa©) in ICU patients.
Little is known regarding sevoflurane kinetics and toxicity during long-term sedation of intensive care unit (ICU) patients using the AnaConDa® system. The objective of the present study was to establish a pharmacokinetic description of 48-h sevoflurane administration, and to estimate plasma concentrations of metabolites. ⋯ Following 48 hours of sedation using sevoflurane inhalation administered using an AnaConDa® delivery device, sevoflurane washout was rapid. Plasma fluoride levels accumulated over the study period without apparent nephrotoxicity.