Resp Care
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Review
The growing role of noninvasive ventilation in patients requiring prolonged mechanical ventilation.
For many patients with chronic respiratory failure requiring ventilator support, noninvasive ventilation (NIV) is preferable to invasive support by tracheostomy. Currently available evidence does not support the use of nocturnal NIV in unselected patients with stable COPD. Several European studies have reported benefit for high intensity NIV, in which setting of inspiratory pressure and respiratory rate are selected to achieve normocapnia. ⋯ Pressure support ventilation, pressure controlled ventilation, and volume controlled ventilation have been used successfully for chronic applications of NIV. New modes have recently become available, but their benefits await evidence to support their widespread use. The success of NIV in a given patient population depends on selection of an appropriate patient, selection of an appropriate interface, selection of an appropriate ventilator and ventilator settings, the skills of the clinician, the motivation of the patient, and the support of the family.
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This paper reviews management strategies for patients undergoing prolonged mechanical ventilation (PMV). Topics covered include how to identify and correct barriers to weaning, the systematic approach to weaning trials, when to cease weaning trials and proceed with life-long support, managing the tracheostomy tube during PMV, and, finally, how to select a suitable mechanical ventilator for PMV.
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The chronically critically ill (CCI) patient population is characterized by a prolonged need for high cost medical interventions, a high 1-year mortality rate, and a very high demand for post acute care services. The best characterized CCI patient population is patients on prolonged mechanical ventilation (PMV). This review will focus on the current knowledge of costs and care venues for the care of this patient population. ⋯ Given the dramatic comparative acute care cost burden of PMV patients, the societal implications for managing both the care burden and the costs of care are staggering. Strategies to improve the efficiency in healthcare for this patient population will be essential. Limitations to the existing care models in the United States will be identified with a focus on our current research deficiencies, which limit healthcare providers and administrators in providing patient focused care for this patient population.
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The chronically critically ill (CCI) comprise a rapidly growing population of patients who have survived acute critical illness, only to be left with ongoing organ dysfunctions requiring high levels of specialized care for months or years. In many ways, CCI is an "iatrogenic" process, reflecting the ability of modern life support technologies to keep patients alive for prolonged periods of time despite ongoing life threatening illness. ⋯ Importantly, CCI patients transition among these venues frequently, reflecting the nature of CCI to be punctuated with episodes of acute critical illness. Management of the CCI population requires a special combination of intensive care and rehabilitative skills.
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Patients requiring prolonged mechanical ventilation are rapidly increasing in number. Improved ICU care has resulted in many patients surviving acute respiratory failure to require prolonged mechanical ventilation during convalescence. Also, mechanical ventilation is increasingly used as a therapeutic option for patients with symptomatic chronic hypoventilation, with an increased effort to predict nocturnal hypoventilation to initiate ventilation earlier. ⋯ These factors point to a likely increase in the number of patients receiving home mechanical ventilation in the United States. Unfortunately, there are no comprehensive databases or national registry of home ventilator patients-therefore the number of home ventilator patients is unknown. There are real challenges to providing mechanical ventilation in the home, which include caregiver training, adequacy of respiratory care, and reimbursement.