Critical care medicine
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Very early extubation of children after cardiac surgery has been suggested as a safe alternative to prolonged postoperative intubation but is still not common practice. Studies of early extubation in children may not have described reasons for failure to extubate, or have included nonbypass or only low-risk repairs. We present our experience with very early extubation in an inclusive group of children after cardiac surgery. ⋯ Successful early extubation of even young children is possible and easily accomplished in most children undergoing cardiopulmonary bypass, even with complex procedures, but advantages of extubation in the operating room vs. immediate ICU extubation remain unclear. Transient mild-to-moderate mixed acidosis is common and requires no treatment. Full implementation requires acceptance by surgical and ICU staffs.
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Critical care medicine · Apr 2002
Comparative StudyDopexamine but not dopamine increases gastric mucosal oxygenation during mechanical ventilation in dogs.
To compare the effects of dopamine and dopexamine on gastric mucosal oxygenation during mechanical ventilation without and with positive end-expiratory airway pressure (PEEP) and after compensation of the PEEP-induced hemodynamic suppression. ⋯ Dopexamine but not dopamine improved gastric mucosal oxygenation in dogs. This effect was independent of the dosage and the ventilation mode. Thus, dopexamine may reverse a decrease in splanchnic oxygenation induced by ventilation with PEEP. The dopexamine-induced increase in gastric mucosal oxygenation was mediated by beta2-adrenoceptors, which explains the superior effects of dopexamine to dopamine on mu-Hbo2. The regional effects of both catecholamines were not mirrored by systemic hemodynamics.
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Critical care medicine · Apr 2002
Randomized Controlled Trial Multicenter Study Clinical TrialFluid thresholds and outcome from severe brain injury.
To determine, by retrospective analysis, critical thresholds for intracranial pressure, mean arterial pressure, cerebral perfusion pressure, and fluid balance associated with poor outcome in patients with severe brain injury. ⋯ Exceeding thresholds of intracranial pressure, mean arterial pressure, cerebral perfusion pressure, and fluid volume may be detrimental to severe brain injury outcome. Fluid balance lower than -594 mL was associated with an adverse effect on outcome, independent of its relationship to intracranial pressure, mean arterial pressure, or cerebral perfusion pressure.
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Critical care medicine · Apr 2002
Comparative Study Clinical Trial Controlled Clinical TrialPatient-ventilator interactions during partial ventilatory support: a preliminary study comparing the effects of adaptive support ventilation with synchronized intermittent mandatory ventilation plus inspiratory pressure support.
To compare the effects of adaptive support ventilation (ASV) and synchronized intermittent mandatory ventilation plus pressure support (SIMV-PS) on patient-ventilator interactions in patients undergoing partial ventilatory support. ⋯ In patients undergoing partial ventilatory support, with clinical and electromyographic signs of increased respiratory muscle loading, ASV provided levels of minute ventilation comparable to those of SIMV-PS. However, with ASV, central respiratory drive and sternocleidomastoid activity were markedly reduced, suggesting decreased inspiratory load and improved patient-ventilator interactions. These preliminary results warrant further testing of ASV for partial ventilatory support.
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Critical care medicine · Apr 2002
Randomized Controlled Trial Comparative Study Clinical TrialPercutaneous tracheostomy: prospective comparison of the translaryngeal technique versus the forceps-dilational technique in 100 critically ill adults.
To compare two different techniques of percutaneous tracheostomy: Griggs' forceps-dilational technique and Fantoni's translaryngeal technique, both performed with the manufacturer's basic kit and with bronchoscopic guidance. ⋯ Serious complications related to percutaneous tracheostomy occurred in 8.5% and 1.8% of the cases in the translaryngeal technique and the forceps-dilational technique group, respectively (p <.001). Technical difficulties were not rare when using the translaryngeal technique (23%). On the basis of our results, we concluded that the forceps-dilation technique is superior to the translaryngeal technique, with fewer technical difficulties and fewer complications for critically ill patients.