Critical care medicine
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Critical care medicine · May 2012
Trends in the incidence of noncardiogenic acute respiratory failure: the role of race.
We sought to examine trends in the race-specific incidence of acute respiratory failure in the United States. ⋯ The incidence of noncardiogenic acute respiratory failure in the United States increased between 1992 and 2007. Black and other-race Americans are at greater risk of developing noncardiogenic acute respiratory failure compared to white Americans.
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Critical care medicine · May 2012
Quantitative assessment of the microcirculation in healthy volunteers and in patients with septic shock.
The microcirculation of septic patients has been characterized only semiquantitatively. Our goal was to characterize the sublingual microcirculation in healthy volunteers and patients with septic shock quantitatively. Our hypotheses were that 1) hyperdynamic blood flow is absent in septic shock; 2) nonsurvivors show more severe alterations than survivors; and 3) quantitative and semiquantitative microcirculatory parameters have a similar performance. ⋯ The main characteristics of sublingual microcirculation in patients with septic shock are hypoperfusion and increased flow heterogeneity. Hyperdynamic microvascular blood flow was not found. Nonsurvivors showed more severe alterations than survivors. Quantitative and semiquantitative microcirculatory variables displayed similar behaviors.
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Critical care medicine · May 2012
Survey of determination of death after cardiac arrest by intensive care physicians.
The controversy regarding death determination in the context of organ donation after cardiocirculatory death requires investigation. We sought to describe the manner in which Canadian adult and pediatric intensive care physicians report death determination after cardiac arrest. ⋯ Intensive care physicians in Canada report: 1) variability in the practice of determining death after cardiac arrest; 2) the existence of autoresuscitation; and 3) a need for standardization of practice. The results of this survey support the need to develop more robust education, guidelines, and standards for the determination of death after cardiac arrest, in general, as well as within the context of donation after cardiocirculatory death.
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Critical care medicine · May 2012
Controlled pauses at the initiation of sodium nitroprusside-enhanced cardiopulmonary resuscitation facilitate neurological and cardiac recovery after 15 mins of untreated ventricular fibrillation.
A multipronged approach to improve vital organ perfusion during cardiopulmonary resuscitation that includes sodium nitroprusside, active compression-decompression cardiopulmonary resuscitation, an impedance threshold device, and abdominal pressure (sodium nitroprusside-enhanced cardiopulmonary resuscitation) has been recently shown to increase coronary and cerebral perfusion pressures and higher rates of return of spontaneous circulation vs. standard cardiopulmonary resuscitation. To further reduce reperfusion injury during sodium nitroprusside-enhanced cardiopulmonary resuscitation, we investigated the addition of adenosine and four 20-sec controlled pauses spread throughout the first 3 mins of sodium nitroprusside-enhanced cardiopulmonary resuscitation. The primary study end point was 24-hr survival with favorable neurologic function after 15 mins of untreated ventricular fibrillation. ⋯ Reducing reperfusion injury and maximizing circulation during cardiopulmonary resuscitation significantly improved functional neurologic recovery after 15 mins of untreated ventricular fibrillation. These results suggest that brain resuscitation after prolonged cardiac arrest is possible with novel, noninvasive approaches focused on reversing the mechanisms of tissue injury.
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To present a clinical ethics case report that illustrates the benefits of using lip-reading interpreters for ventilated patients who are capable of mouthing words. ⋯ For the ventilated patient who can mouth words, lip-reading interpretation offers an opportunity for communication. It is time we routinely provide lip-reading interpreters as well as recognize the need for prospective studies examining the role of lip-reading in medical settings.