Articles: respiratory-distress-syndrome.
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Critical care medicine · Nov 1993
Randomized Controlled Trial Comparative Study Clinical TrialA double-blind, prospective, randomized trial of ketoconazole, a thromboxane synthetase inhibitor, in the prophylaxis of the adult respiratory distress syndrome.
To determine if ketoconazole, a thromboxane A2 synthetase inhibitor, given within the first 24 hrs after diagnosis and arrival in the intensive care unit (ICU) would decrease the frequency of adult respiratory distress syndrome in the septic patient population. ⋯ Ketoconazole (400 mg through the gastrointestinal tract) given early in the septic course may prevent ARDS and decrease the mortality rate in high-risk, septic patients.
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Heterotopic ossification (HO), deposition of para-articular ectopic bone, is associated with musculoskeletal trauma and certain congenital and metabolic disorders. Additionally, HO may follow paralysis from diverse traumatic and nontraumatic neurologic insults. We describe three cases of HO associated with catastrophic nontraumatic respiratory illness requiring prolonged chemical paralysis and cardiorespiratory support.
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Protocol control of severely ill ICU patients seems feasible. A satisfactory computer infrastructure makes protocol control practical. A reported four-fold survival rate increase associated with protocol control of ventilatory management of adult respiratory distress syndrome patients suggests that it is not harmful. ⋯ Such a consortium could rapidly complete large, randomized, clinical trials under computerized protocol control. This arrangement could provide much more definitive results than are currently possible. Interpretation of outcomes research results should thereby be made easier and conclusions should be more credible and more likely to contribute to medical policy formulation.
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The traditional practice of using high inflation pressures to maintain normal tidal volumes and arterial blood gases has been encouraged by the perception of uniformly distributed damage in acute lung injury. Although the frontal chest radiograph often suggests uniformity, recent work highlights the heterogeneous pathoanatomy and lung mechanics that actually characterize the adult (acute) respiratory distress syndrome. This heterogeneity is important to consider when applying mechanical ventilation, because impressive experimental evidence strongly indicates the potential for traditional selections for volume and pressure to impede lung healing or extend damage to previously unaffected areas. ⋯ Pathologic, physiologic, and theoretical arguments favor a strategy that attempts to avoid tidal alveolar collapse and to keep transalveolar pressure (not PaCO2) within normal physiologic limits. CO2 retention may be an unavoidable consequence of such a lung-protection strategy. Although the traditional paradigm for ventilation appears in need of revision, it must be recognized that few prospective, controlled trials of alternative ventilation modes have been undertaken to prove their superiority.
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Randomized Controlled Trial Comparative Study Clinical Trial
Randomised trial of routine versus selective paralysis during ventilation for neonatal respiratory distress syndrome.
The strategy of non-selective neuromuscular paralysis was compared with that of synchronised (fast rate) ventilation and selective paralysis in infants receiving mechanical ventilation for respiratory distress syndrome with chronic lung disease as the primary outcome measure. One hundred and ninety three infants weighing under 2000 g were randomly allocated to receive either pancuronium during mechanical ventilation in the acute phase of respiratory distress syndrome (non-selective group) or synchronised ventilation (initial ventilatory rate at or above that of the infant's) (selective group). Infants in the selective group received pancuronium if they were consistently expiring during the inspiratory phase of the ventilator cycle. ⋯ There was no significant difference between the group with respect to death (selective 19%, non-selective 16%), pneumothorax (selective 14%, non-selective 14%), chronic lung disease (selective 49%), non-selective 47%), and oxygen dependency at 36 weeks' postmenstrual age (selective 32%, non-selective 39%). Routine paralysis of ventilated infants has potential complications that may be avoided by using synchronised ventilation. As the latter is not associated with an increased incidence of long term respiratory complications, it is concluded that it is the optimum strategy of the two for ventilating infants with respiratory distress syndrome.