American journal of critical care : an official publication, American Association of Critical-Care Nurses
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Review Case Reports
Management of delirium associated with use of the intra-aortic balloon pump.
Five patients who developed an agitated delirium in association with use of an intra-aortic balloon pump are presented. The differential diagnosis of delirium in critically ill cardiac patients is reviewed and effective pharmacologic treatment strategies (involving rapid and aggressive management with intravenous haloperidol) are discussed.
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To review the epidemiology and pathophysiology of gram-negative sepsis and the new consensus terminology describing the clinical signs of sepsis. ⋯ If the incidence of sepsis is to be reduced, the healthcare provider must be aware of the risk factors for sepsis and methods of reducing nosocomial infections. A thorough understanding of the role of mediators and consensus terminology used to describe sepsis, severe sepsis, septic shock and multiple organ dysfunction syndrome is necessary to recognize early or progressive signs of sepsis and to initiate state-of-the-art therapy.
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Positioning of critically ill patients affects hemodynamic and cardiopulmonary outcomes. A review of clinical studies indicates that backrest elevations up to 60 degrees do not affect measurement of intracardiac pressures or cardiac output, but PaO2 may diminish in sitting positions following surgical procedures. In lateral positions, measurement of intracardiac pressures and cardiac output is not recommended, since a uniform reference point has not been identified for lateral positions. ⋯ Prone positioning may be beneficial in adult respiratory distress syndrome and in weaning of mechanically ventilated patients. When planning positioning maneuvers, critical care nurses should consider these effects in relation to the specific needs of each patient. Hemodynamic and cardiopulmonary responses to positioning should be evaluated in conjunction with other therapeutic modalities such as those designed to preserve skin integrity and improve comfort.
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Infection is the primary cause of morbidity and mortality following cardiac transplantation because of the strict immunosuppressive regimens patients follow. In the immediate postoperative phase, patients are more susceptible to infection because of interruption of their external barriers to infection. ⋯ Fungal, protozoal and herpes simplex infections are also frequently troublesome to the transplant recipient. Critical care clinicians can control the incidence of infection in the cardiac transplant population by initiating measures to maintain external barriers, monitoring the patient for early signs of infection, and instituting appropriate isolation techniques.
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Review Comparative Study
Myocardial contusion: new concepts in diagnosis and management.
Myocardial contusion is diagnosed with one or a combination of four diagnostic procedures: electrocardiography, echocardiography, creatine kinase MB fractions and/or radionuclide procedures. This article presents a critical review of 18 recent studies addressing the utility, sensitivity and specificity of these tests. ⋯ Echocardiography is useful in the management of myocardial decompensation but not as a primary screening tool in blunt cardiac injury. Cost comparisons, resource allocation and implications for critical care practice are discussed.