Articles: function.
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Semin Respir Crit Care Med · Jun 2001
Pulmonary and extrapulmonary forms of acute respiratory distress syndrome.
Acute respiratory distress syndrome (ARDS) is usually viewed as the functional and morphological expression of a similar underlying lung injury caused by a variety of insults. However, the distinction between ARDS due to a direct (ARDSp) versus an indirect (ARDSexp) lung injury is gaining more attention as a means of better comprehending the pathophysiology of ARDS and for modifying ventilatory management. ⋯ It is possible that the two insults may coexist (i.e., one lung with direct injury (as in pneumonia) and the other with indirect injury, through mediator release from the contralateral pneumonia); (2) the radiological pattern, by chest x-ray or computed tomography (CT), is different in ARDSp (characterized by prominent consolidation) and ARDSexp (characterized by prominent ground-glass opacification); (3) in ARDSp lung elastance is more markedly increased than in ARDSexp, where the main abnormality is the increase in chest wall elastance, due to abnormally high intra-abdominal pressure; (4) positive end-expiratory pressure (PEEP), inspiratory recruitment, and prone position are more effective to improve respiratory mechanics, alveolar recruitment, and gas-exchange in ARDSexp. Further studies are warranted to better define if the distinction between ARDS of different origins can improve clinical management and survival.
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Early reports of late outcomes among survivors of ARDS indicated that most patients improved dramatically after their intensive care unit stay, and few lived with residua of their once-severe pulmonary injury. Over the last decade, a collection of new studies with improved methodology and novel questions has improved our understanding of life after ARDS. After reviewing these newer investigations in the context of previously published literature, we have drawn several preliminary conclusions: (1) Long-term survival after hospital discharge is unaffected by ARDS, but is strongly affected by ARDS risk factor and comorbidities. (2) Respiratory symptoms after ARDS are more prevalent than previously indicated, but improve over the first 12 months of recovery. (3) Pulmonary function testing reveals marked impairment soon after ARDS. ⋯ A small group of patients have severe impairment without improvement. (4) Quality of life, functional independence, and cognitive function are severely affected by ARDS, with dramatic improvement over the first year. Quality of life is lower than in matched critically ill controls. (5) Significant numbers of ARDS survivors suffer from posttraumatic stress syndrome. This is an exciting time for research in long-term outcomes of ARDS, with potential for future studies that validate these single-center hypotheses, explore their ramifications, and investigate the impacts of changing practices in the intensive care unit in the acute phase of ARDS.
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To undertake a prospective randomised controlled study to investigate whether there is any beneficial renal effect in the perioperative administration of mannitol in patients undergoing orthotopic liver transplantation. ⋯ We conclude that intraoperative mannitol does not help preserve renal function in the patient undergoing liver transplantation.
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Epidural fibrosis is seen as a common phenomenon among postlumbar laminectomy syndrome patients, contributing to approximately 60% of symptom recurrence. Percutaneous epidural lysis of adhesions has been described as a modality to effectively manage chronic low back pain secondary to epidural fibrosis. Forty-five patients were randomly assigned, with fifteen patients in the control group, or Group I, who were treated with conservative modalities of treatments, including medication, physical therapy, and an exercise program; and, thirty patients in Group II, who were treated with percutaneous epidural adhesiolysis and hypertonic saline neurolysis. ⋯ The study also showed that overall health status improved significantly in the treatment group in all parameters with average pain, physical health, mental health, functional status, psychological status and narcotic intake. Analysis also showed that this is a cost-effective treatment, with cost for 1-year improvement of quality of life at $2693. In conclusion, epidural adhesiolysis with hypertonic saline neurolysis performed on a 1-day basis is an effective modality of treatment in managing chronic low back pain in patients who failed to respond to fluoroscopically directed epidural steroid injections and also were demonstrated not to have facet joint mediated pain.
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This study was designed to investigate the clinical efficacy of fluoroscopically guided therapeutic cervical selective nerve root blocks (SNRBs) in patients with whiplash induced cervical radicular pain. Study design was restrospective with independent clinical review. Twenty two patients were included. ⋯ Good or excellent results were observed in 14% of patients. In higher functioning individuals a significantly greater (F=.0427) improvement in pain of 48.9% was observed. In these initial findings suggest that fluoroscopically guided therapeutic SNRBs, except possibly for higher functioning individuals, are not effective in the treatment of whiplash induced cervical radicular pain.